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Air volume is small, cooling effect bad?
There are many reasons: A, high environmental temperature, but also more person in the room air conditioner working at full capacity. B, power supply voltage is too low, causing air conditioner difficult to activate, and then shut down or blown fuse start the phenomenon, it is recommended users install the power regulator. C, open the cold block in the strong room temperature do not fall down the outlet of the air supply is not, this is too much fouling the air filter and clean the filter. D, adjust the thermostat properly. E, poor air conditioning installation location, the room temperature will lead to uneven or poor cooling effect. 2, inverter air conditioner shut down correctly: When you use air-conditioned environment is very good insulation, the room temperature is very close to the set temperature, time will stop the inverter air conditioner. Even if the lowest frequency of inverter air conditioner is running, will have some cold, but this time the room is no longer under the law of energy conservation energy loss, this time the air will stop. 3, the Users Advisory air conditioning set to 17 degrees, but the air conditioning down to 25 degrees, it will not be dropped, is not air conditioning is not normal. 17 degrees set by the user is the user expected to achieve a desired temperature, the user environment and the outside air conditioning heat exchange there is always cold, the beginning of cooling, due to indoor and outdoor temperature difference, the room temperature quickly dropped, but dropped to a certain temperature, the amount of time the cold air generated just outside the room with the energy loss are equal, the temperature of the room will no longer fall, when cold air conditioning and refrigeration produced only sufficient to maintain the room's energy loss. Users need to improve the cooling effect, it is best recommended to improve the sealing performance of the room interior with the outside world to avoid excessive energy loss. 4, the user response to last year of normal use, but this year the voltage when used often enough to the situation one year after the use of air conditioning is not easy to aging. Users Advisory first use of air conditioning power supply voltage is not normal, if indeed belong to the supply voltage is not normal, can be lived to the user community that the user supply voltage has not changed, but the use of air conditioning more and more users, there will be no normal power supply The phenomenon, which is not air-conditioned for one year after the aging. 5, remote control, why not show? A, see the battery is installed right, if there is power. B, see whether it is bad, in the case of this situation allows the user to adjust the contact pads. C, if not enough, please visit our network maintenance. 6, air-conditioning leakage (indoor unit) Analysis: A blocked drain, loss or damage; B installation is not level; C removal and water tray after the collision caused the shift; D then outdoor water containers have been filled with water, the blocked by water pipes (the actual atmospheric pressure outside the tube is the water suppressed). The water can be drained. E When the indoor air humidity, indoor air box out, put the wind or the connecting pipe leaves the surface layer of water droplets, which is normal. Solution: The first species to be 1,2,3-site maintenance services, the first species to be explained 4,5. 7, how to choose the right model and the corresponding air-conditioning installation location? When users select the air conditioner should be considered an area the size of the room, the room doors and windows structure, orientation, top floor, walls and heat sealing conditions of the situation; the outdoor unit is installed to avoid the sun, avoid dust, exhaust is smooth and so on. In general: common room: (W / m²), living a small office: (W / m²), restaurants: (W / m²), places of entertainment: (W / m²), top: (W / sq m). 8, the whole power no response, does not start before the user examine the outlet has power (which can be plugged in fans, lights and other simple equipment to try.) If not, please check your home power users; if an electric outlet, and air-conditioning power cord is not damaged, it is within the power circuit air-conditioning problems, need to contact your local network site maintenance. 9, the user voltage is low, air conditioning can not start, but other brands under the same condition air conditioning to work properly, how to explain to the user? Voltage is too high, too low, then this condition long-term use of air conditioning, is likely to cause damage to the compressor and other electrical components, the U.S. company from the user's point of view and protection of electrical components inside the air conditioning off, the voltage requirements of a little bit strict, so air-conditioning to work properly, while reducing damage to electrical components not recommended voltage is too high or too low often the case with air-conditioning, it is best to buy power supply, the power should be 3-8 times the rated power air conditioning. 10, the normal air-conditioning, room temperature do not fall down, how to solve? Room temperature can drop down and the air conditioning not only bad, but also good or bad depending on the user room insulation, sealing a good degree, window area, orientation, floor location, open the door number, size and other heat sources such as electrical appliances and other measurable temperature difference between air into and out, if temperature in the range of 10-13 degrees, the air conditioning without any problems. If the user does not accept such an explanation can be recommended to the smaller air-conditioning in the room safe or replace it models make a large spread of air-conditioning. 11, why 2P (including 2P) with no more than Guiji power plug? Because 2P (including 2P) Guiji start over very high instantaneous current for operating current of 2-3 times the normal maximum exposure to air plug current is 15A, while the normal startup can not afford such a high plug current, long-term this will cause the power cord burned, cause more serious fires, in order to avoid such accidents, the National Security Agency does not allow air conditioning manufacturers must be used with the power plug and switch or air knife 12, the air conditioning installed after , because the user power far, users were asked to install the power cord fabric refused to cause the user dissatisfaction? Cable distribution power lines is to be professional electrician to do the installation work is not a professional electrician, and for your safe use of electricity, or your electrician, power lines to be done, will give the test machine, so you can use it. 13, why is there air conditioning unit at the nut water, fluoride is not a leak? Fluoride is not a leak, you can use it, this is not the cause of air leakage of fluoride, but a physical phenomenon, because the temperature is very low here, met with the hot air in droplets of water vapor condensation device attached to the copper cap face down or on to similar: take a bottle of mineral water from the freezer when the water while the bottle wall and there were 14 down is the same reason why a noon or evening time, the air conditioner stops frequently, or outside the unit does not work? This situation is generally unstable power supply caused by the user, the user can look to the area occupied by the voltage situation, more attention to this place is not always such a complaint to the user Explanation: These two sessions are the power peak, resulting in lack of electricity, air conditioning is the power larger appliances, it is difficult to start, the user purchase and other regulators. 15, air conditioning, no power, running lamps twinkling, this is not the air conditioning is faulty? No, this is the standby display status, you can always turn the other there is a hint feature, that is, air-conditioning in the long pull when not many users forget the socket, then flashing lights will alert the user. 16, when the fast wind speed within the slow machine, and the larger the wind, and why? First time users do not know whether to clean the filter often, if not, how clean the user guide, because after the impact of the dirty filter into the air flow, resulting in uneven speed. If after cleaning does not work, send maintenance personnel to be onsite inspection. 17, press no response, how to do? To understand whether air power (such as running lights have lit), such as running lights do not light the first outlet from the next check whether there is electricity, or for a mobile outlet to try whether the air inside the machine; such as running lights are bright , proposed to replace a pair of new battery; such as maintenance personnel is not enough to send home. 18, why the new installed capacity will be issued when the swing sound of the wind? Because of the new shaft installed capacity of wind just to use the pendulum too wrinkled, you need to run over a period of time, you can give it a little drop of oil. 19, air conditioning, which is normal indoor voice ? Air-conditioning work properly when the following sound: A, air-conditioning running of the wind, this time by adjusting the corresponding wind speed in order to improve the corresponding B, air conditioning thermal barrier plastic shrink the "crackling", the sound can not be completely avoided, only heterozygosity through tight shell or adjust the position of a corresponding improvement in C, the refrigerant liquid in the tubes sound of rapid vaporization. 20, in setting air-conditioning is always turned off when the timer? Some of the new remote control key for only one time set timing, in operation since the first function is' time to open ", and transmit signal delay time of only 2 seconds, so operation is very likely not set 'll be good timing when the "time to open" signal transmission out, resulting in misuse. At this point can put a hand in launching the remote location, then the corresponding function in the settings to launch when the hands off the signal . 21, why just getting there will be a smell when the air conditioner? air itself is not usually smell, boot odor may be the following reasons: the smell of the room: air ventilation is not difficult to smell the odor when, air-conditioning running odor concentrated in the narrow outlet, so that usually do not perceive the smell intensified. this time can be improved by improving the indoor environment. 22, carry a sense of air temperature and air-conditioning remote control display shows the temperature does not match. air temperature is displayed on the outlet temperature the remote control to display the actual temperature for the room. 23 A. noisy indoor unit with debris inside. B. Mounting plate does not hang up. C. Wind wheel and the motor cover with friction. 24, air conditioning started after the jump A. voltage problem stopped. B. the problem within the machine control board. C. External Electrical capacity problems. D. switch board LCD incomplete. E. outside the machine thermal protection (such as: sun too long and too dirty condenser). 25, why when the newly installed air conditioning cooling water dripping, dripping not bought the year before? newly installed drip is because: A. may be a result of leakage within the machine - the machine into the water through the sink pipes, flow to the outside . B. copper outside the machine generated at the condensed water valve. two years ago bought the air time is long, brass valve at the drop of the dust and putty to play the role of insulation, it is not dripping. 26, why air-conditioning running red light and press any key to are not working? air conditioning operation of the voltage requirements in 195V-245V, voltage instability may be the red light, you can unplug the plug 3 minutes, let air reset, and then plug in, if the recommended long-term instability with a regulator. 27 Why would air after the shutdown issue "card, the card" sound? This phenomenon is not only after the shutdown, the runtime is also possible, mainly due to thermal expansion and contraction of plastic parts. 28, hang wind guide vane Why sometimes drip? in the air when the humidity is relatively large, if the refrigeration temperature is relatively low, and when playing in low wind conditions, wind vane at the formation of condensation water, this time can improve the cooling set to high temperature and wind conditions to eliminate. 29, why the air conditioning running lights turned off and sometimes do not flash back to flash sometimes? This and air-conditioning power of situations is detected (such as power outages or power fluctuations after shutdown larger), this is normal range. 30, inverter air conditioning, why do non-stop? inverter air conditioner works like this: When the indoor temperature set temperature and difference is large, air-conditioning high frequency (power) operation, when the indoor temperature close to the set temperature When low frequency (low power) operation, the indoor non-stop, the outdoor unit only in the room temperature is below 2 degrees below the set temperature will be shut down. 31, why not just installed air-conditioning refrigeration? There are several possibilities: ( 1), the connecting pipe joints leak fluoride; (2), pipe tainted point; (3), the wiring is incorrect; (4), the fuse burned; (5), compressor failure; 32, causes air leakage ? There are several possibilities: (1), the indoor water tray drain hole plug; (2), pipe bending or flattening; (3), the drain line to right; (4), part of the drainage fittings lax; 33, the reasons for starting or stopping frequent air conditioner? There are several possibilities: (1), the power supply voltage is not normal; (2) outdoor cooling efficiency; (3) Excessive refrigerant; 34, air-conditioning running issue " Baba clap clap "sound caused by thermal expansion and contraction of plastic. 35, users reflect the mice got into the line snapped outside the machine, in particular, entertainment, food and beverage outlets, is not outside the machine did not design good? air conditioning unit was not designed well. 36, air plug in the power but not power, why will flash? There is a model design is that the voltage is too low or the cause. 37, after the purchase of air conditioning How to choose the power cord. operating current less than 12A for the air conditioning air conditioning, requires φ2.5mm2 copper wire and require dedicated connections, ground is clear, should comply with the requirements of current exceeding 12A for the air conditioning air conditioning to be used φ4mm2 more than copper wire. 38, outside the machine does not condensing water out? air conditioning condensation when flowing out, and if not effective, there is no water leakage inside the machine, generally caused by dry weather or indoor drying. 39, air conditioning and refrigeration effect start and stop frequently because of poor generally caused by a low voltage compressor start frequently, the proposed adjustment power; the other is caused by the high temperature setting, the user set the temperature lower. 40, air conditioning and heating for some time why the indoor unit will stop sending hot air about 10 minutes? is wrong? This is because the outdoor machine after running about 1 hour to defrost again. is a normal phenomenon, does not affect the use of air conditioning. 41, long time use of air conditioning odor blow Why? air itself does not produce odors. generally is not a long time Cleaning the indoor unit filter, dust-proof net; no indoor evaporator surface for simple cleaning and maintenance, leading to mildew, deterioration, start running Chuichu smell. 42, air conditioning, start and stop frequently, refrigeration (heat) poor results. This power supply situation is generally low, insufficient capacity, diameter do not meet the requirements of peak demand often results in frequent start the compressor, so air conditioner does not work. as long as the replacement power cord or apply for expansion to solve the problem. 43 , air conditioning, remote control failure in the evening, only with manual switch control. a lot of electrical parts of the electromagnetic radiation would interfere with air conditioning remote control, maintenance personnel can be called interference shielding door handle. 44, spray out the indoor unit outlet What is the cause of the water? If retaining plate deformation, loss, loose, condensed water will drip onto the wind wheel, knocking the wind round room, you can adjust or replace the retaining plate for processing. On the other hand cleaning and maintenance do not result in a timely manner fouling, condensation will overflow from the auxiliary tank, drop in the wind wheel, water droplets emitted from the outlet, this failure can be solved by cleaning. 45, sent the smell of this is due to the wind to suck the indoor air conditioner smell of smoke and other issued and re-sent, not failure (refrigerant leakage does not smell). 46, heat pump air conditioner heat pump does not start in cold air-conditioning because of limited use in the outdoor temperature is below 0 degrees does not start, can not geothermal heating system is normal. 47, opened a few minutes with the air conditioning on the three lights flash This is because the voltage of the user at home there is a problem of low voltage or voltage instability caused by, is normal. 48, air conditioning, water leakage is relatively common, how to explain? first make sure that the room humidity is not very big, Can also see the connection pipe at a copper pipe exposed, if any, may be not careful when installing the installer, causing condensation of water leakage; If not, is also possible that cotton insulation is not thick enough, leading to condensation of water seepage. is also possible that too much tilt the indoor unit installed, resulting in water tray is not level, causing condensation of water leakage. 49, occurred outside the warranty period maintenance, spare parts and warranty how long? Ling Peijian warranty for three months. If the same fault three months of maintenance Fasheng again, no charge. 50, air conditioning does not run after boot Zhengji. work light to 5Hz flash, other lights do not light machine failure? fan speed control. 51, air conditioning, refrigeration power and heating for 5 minutes after the jump four-way valve does not work. 52, shut down within half an hour after the aircraft noise is relatively large (user reflection) liquid hit the sound is normal. 53. Why pungent smell after boot? A user whether it is newly renovated rooms, B evaporator oxidation hydrophilic aluminum foil coated with syrup, continuous use will disappear after a period of time. 54, air conditioning, frequent downtime Why? most cases because the voltage instability, the normal operation of air conditioning voltage should be, users with regulators. 55, air conditioning a few lights at the same time why flash? off after power on, if returned to normal, compared with voltage problems; if not return to normal, then called home inspection service personnel. 56, air conditioning need to add a fluorine how long? air conditioning and fluoride and there is no fixed time, which is mainly based on the cooling effect of air pressure inside the air-conditioning systems and, if the normal to fluoride do not need a. 57, why a 1.5P air-conditioning, on the 6 square meters of room, air-conditioning for 5 minutes the results of a machine stop? because 1.5P 6 square meters of air-conditioning use in the room, air-conditioning power becomes larger. often just air cooling for a while, a sense of temperature near the temperature of the first to arrive, so more frequent downtime. This situation can be in this room to add a row of fans, it will not only stop the phenomenon of frequent air conditioner can be solved , air conditioning, cooling effect will look better. or adjustment to the sense of temperature control head position. 58, why air-conditioning inside the chassis always ring? is because the thermal expansion and contraction of the reason the case, this situation is often a period time will be better. 59, why the higher outdoor temperature, air-conditioning machine is not running? outdoor compressor cooling is not good, the outdoor unit is cleaned. 60, why the same type air conditioning unit drain some more, some less? A, air-conditioning installed in different environments, such as toward different, when the direct sun, the end portion of condensed water has evaporated, so less water. B, the different installation location of the humidity, humidity and more water knot. C, the insulation effect there are differences, there is less water insulation. 61, why air-conditioning set to 20 degrees, cooling effect or not? A, air-conditioning cooling effect is good or bad, is not determined by the set temperature (in a situation with the correct remote control below), fixed-frequency air-conditioning work outlet temperature is constant. B, air-conditioning use of the environment is harsh (the voltage is normal, how to seal the room, the outdoor unit is heat well, whether the number of excessive use of premises). C, air-conditioning match with the use of market power. D, air-conditioning running the length of time. 62, why outdoor noisy? A, the outdoor unit have screws loose wall is aging, noise is not a large glass window resonance, pipeline a bend where flat, outdoor fan blade balancing is not good, no problems, and so the quality press. B, axial flow fans and blades, compressor noise is added cotton. C, the whole machine duct design. D, refrigerant flow of refrigeration system, cooling system piping design, after the network resonance. 63, why sometimes when the air conditioning blowing the fog? normal? When the indoor temperature and humidity is high, the air conditioning will blow the fog. This is due to air The steam caused by cooling. When the indoor temperature and humidity decreased and then the fog will disappear. This is normal. 64, why the air conditioning outdoor opportunities for leaks? 1), if it is dripping out from the high and low pressure valves, are condensation water droplets, is normal. 2), heating and defrosting leakage is normal. If not the above two situations, it could be: 3), connecting pipe insulation outside the machine is not in place, leading to poor insulation, resulting in condensation of water 4.), the system too much refrigerant, resulting in leakage of liquid storage tank condensation. 65, the noise inside the machine, not the wind, the sound of non-thermal expansion and contraction, but a buzz, without work there, why ? transformer sound. 66, a working light in the shutdown, and sometimes still flash, and sometimes do not flash, air conditioning is faulty it? air-conditioning normal standby state, the pull the plug when not in use, this does not occur kinds of situations, does not affect use. 67, the machine does not meet the set temperature to stop, the bad, right? air conditioner in cooling or heat, and set the temperature of a certain temperature, typically 1 to 2 degrees, which is normal . 68, only to wind up the pendulum swing, the cold wind does not blow down, put the wind is not bad? air conditioning design problems, cold air than hot air heavy, will be in the indoor loop sinking, can improve the cooling room cycle. in heating, the pendulum swing on the wind Bianxiang is the same reason. 69, issued a similar air-conditioning running Why is the sound of water cooling system refrigerant flows in the sound, is normal. 70 cream outlet louvers on air for a long time if the operation in high humidity moisture may condense on the air outlet louvers and drop, this is not a malfunction. 71, poor ventilation, the wind not too cold, this is due to dirty air filters due to gambling, check and clean the filter. 72, in the cooling process of blowing the fog when the indoor temperature and humidity is high, when the air conditioning blowing mist, which is due to water vapor in the air caused by cooling. When the room temperature and the temperature drops fog will disappear. 73, why can not shut down immediately after the restart after the air conditioning down to within 3 minutes after the operation, protection timer will automatically work to protect the air conditioner main components from damage. 74, air-conditioning if has been running well, a sudden power failure or other causes can not start after crash? allows users to plug the power to take down (turn off the air) to re-plug. If the air conditioner can be started, usually it is zero-fault complex electronic control . 75, why no problem and sometimes air conditioning vent inside the machine there will be white smoke? due to indoor air when the humidity is high, the use of cooling operation, the humidity and the General Assembly, the outlet temperature produced a white mist. 76, there are ventilation function , how breathing it? have a special ventilation is the ventilation devices will be able to get outdoors indoor air pollution, so that negative pressure room, outdoor fresh air will automatically enter the room, so as to achieve the purpose of ventilation to increase oxygen in the room content, fresh air. 77, when the air conditioning cooling effect can achieve long? usually 5-10 minutes, but depends on the specific structure and the interior of the sealing room, good or bad, and the outdoor ambient temperature with air-conditioning of these good cooling effect is related to poor. 78, air conditioning a few lights flash, you can not do anything. two possible explanations: A, voltage instability, compressor overcurrent protection; users can be resolved, it is recommended to take power after electrical power connection; B, the first operation may be ineffective air conditioning is faulty, need to deal with home repair workers. 79, why not take electricity to run lights Lao flash boot? why sometimes flash and sometimes do not flash? designed to indicate status standby, flash dynamic frequency of 1Hz is normal. No flash may be due to interference, such as electromagnetic interference, infrared interference, such as mobile phones, will this interfere with fluorescent converter. 80, select 'Automatic' mode Why suddenly the wind would suddenly big small ? automatically set the temperature and the machine according to the current sensing mode of the indoor temperature, wind speed of transformation, so the sound of wind speed will change. 81, air conditioning, refrigeration cases, why the sudden heating? A. weather is hot in the case of air conditioning at or near the set temperature, press down, fans outside the machine in turn, the indoor unit to send the natural wind, because the outdoor temperature is high, so get the natural feeling of the wind when the wind is hot, the user is over air-conditioning system has been not a few minutes to see refrigeration; B. ask the user what tone mode, the case of automatic mode, air conditioning, set the temperature higher than room temperature, air conditioning, in the case below the room temperature, air conditioning, heating will; C. None of the foregoing, so that maintenance personnel onsite inspection. 82, why not start the remote control role? A. recommended to look at whether air conditioning is not energized; B. ask whether the user against the use of air conditioning; C. Construction Users Conference a change in the battery; D. allow users to look at the air-conditioning is not in the three lights flash, the case allows users to pull down the power, after a few minutes to try out (voltage instability of the situation); E. None of the above lines, the maintenance personnel onsite inspection. 83, what is the electric auxiliary heating, electricity or not? air conditioning in the case of heating, the compressor in the low-temperature heating effect is not good or down without legal hot, indoor electric auxiliary heating starts, the auxiliary heat pump heating in order to achieve better results. electric auxiliary heating will start power, energy conservation, produce much heat, how much power it takes. using polymer electric auxiliary heating device, high utilization of energy, once they reach the normal system hot, electric auxiliary heating automatically shut down, and, electric auxiliary heating is an independent operating key is turned on by your choice. 84, fans do not switch, boot protection reasons? there may be air shaft is stuck, in part because the air humidity, air conditioning or dehumidifiers also have condensation of water flow along the electrical line fan motor bearings causing rust. 85, some two or more Guiji is not equipped with power plug, how to explain? as 2P (including 2P) over cabinet machine startup transient current is very high, as the operating current of 2-3 times the normal maximum exposure to air plug current is 15A, while the start of the plug can not afford such a general high current, long-term this will cause burning power plug coke, more serious cause fire, in order to avoid such accidents, the National Security Agency does not allow air conditioning manufacturers with the power plug and the air switch or knife must be used. 86, automatic mode is like? explanation: In the automatic mode The default setting temperature is 24 degrees, if the room temperature is 1 degree higher than 24 degrees, air conditioning and refrigeration; If the indoor temperature is 1 degree below 24 degrees, air conditioning, heating.

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Basic principles
As we all know, refrigeration unit consists of four parts, comprising the compressor, condenser, evaporator and expansion valve. Heat recovery unit is added between the compressor and condenser of a refrigerant - water heat exchanger, the four pieces into five pieces. The role of the heat exchanger is to refrigerant (freon) absorption of heat emissions to water, to heating, heat recovery play a role. As high pressure piston compressor, the discharge temperature up to 100 ℃, so the hot water heated by heat exchanger generally up to about 60 ℃, the maximum equilibrium temperature up to about 80 ℃.
Technological transformation projects, the other needs to add some accessories, such as: high-pressure automatic control system, hot water circulating pump and ion cleaning, etc., to ensure the system more safe and reasonable.
Refrigeration and air conditioning in summer heat consumption of domestic hot water and the amount of diesel consumption
General hotel area by building air conditioning design to estimate the cooling load indicators, cooling per square meter is about 120kcal / h or so. To 10,000 m2 of the hotel, for example, designed refrigerating about 120 × 104kcal / h, the heating refrigerator for power increased by 15% (has been taken as aforesaid and lower limits) of the heat, so the actual emissions of the waste heat of about 138 × 104kcal / h. Heat recovery efficiency by 0.7 terms, the availability of effective waste heat recovery heat is 96.6 × 104kcal / h, 60 ℃ in summer can be heated with hot water is about the lives of 24 m3 per hour or so.
The general area of the hotel room about 60% of the construction area to 40m2 per room per share calculation, the number of hotel rooms are about 150, per room to consider the two travelers, the passenger number 300. Meanwhile, the general average hotel room set, a staff, therefore, 10,000 m2 of hotels generally have 150 workers.
1, the hotel needs of visitors daily energy consumption per bed:
According to the drainage criteria, hotel visitors per bed day fixed with 65 ℃ hot water is 150 to 200 liters, calculated according to average 175 liters, Shanghai, summer water temperature to 24 ℃ terms, the consumption of calories is 7,175 kcal.
2, the hotel staff every public bathroom bath heat loss:
Employees of public bathrooms each with 65 ℃ hot water bath fixed at 50 ~ 100 liters, averaging 75 liters, Shanghai, summer water temperature to 24 ℃ terms, the summer heat consumption is 3,075 kcal.
3, each passenger, staff converted into heat consumption of diesel daily consumption of diesel oil boiler capacity:
Heating value of diesel per kg 1 × 104kcal, diesel boiler and heat exchanger to the overall efficiency of 0.75 terms, the burning of diesel fuel made through the boiler effective diesel per kg calorific value of approximately 7,500 kcal. Therefore, energy consumption per passenger per day 7,175 kcal, that is in the summer, the heat equivalent to 1 kg of diesel consumption is about. Similarly, calorie consumption per day per employee 3,075 kcal, converted into diesel fuel consumption is about 0.4 kilograms.
In summary,
(1) summer visitors and employees the amount of diesel consumption:
300 visitors daily consumption of diesel oil: 300 × 1 kg / person = 300 kg, 150 workers daily consumption of 150 × 0.4 kg / person = 60 kg, so the hotel a total consumption of domestic hot water per day to 360 kg of diesel so.
That is, if the use of heat recovery chiller technology, through waste heat recovery unit to provide domestic hot water with the heat, the refrigeration and air conditioning in summer can save 360 kg of diesel fuel per day. Refrigeration and air conditioning by a five-month period of calculation, you can save 360 kg / day × 5 × 30   months = 54,000 kg of diesel. 2.8 yuan per kg of diesel calculated fee is 151,200 yuan to save diesel. Above does not include the hotel restaurant, cafeteria, sauna, etc. with hot water required for diesel consumption.
(2) the total consumption of the summer visitors and employees the amount of hot water:
Hotel visitors daily with water: 300 × 175 liters / person = 52,500 liters; workers daily with water: 150 × 75 liters / person = 11,250 liters of total consumption of two liters of water capacity of 63,750, United 63.75m3.
Hotel cooling load 120 × 104kcal, waste heat recovery by heat recovery technology can be heated to 60 ℃ per hour, the sanitary hot water 24m3, total consumption of passengers and staff sanitary hot water throughout the day 63.75m3. Therefore, the day requires only heat recovery 63.75m3 ÷ 24m3 = 2.65 hours that can meet the requirements of the hotel hot. If the transformation half of the heat recovery unit, which transform 60 × 104kcal / h of the unit, the heat recovery time corresponding to 2.45 × 2 = 5.31 hours.
Saving refrigeration unit and the boiler and other operating costs:
1, refrigeration unit operating cost saving and conservation:
Transformation of the refrigeration unit increase in the level of heat recovery condensing water areas, and enhance the condensing effect of the refrigeration cooling capacity increased by about 1 / 6. The corresponding reduction in the refrigerator 1 / 6 of the power consumption.
For example, the cooling load 120 × 104kcal hotel's refrigeration unit motor power of about 400kW, modified only through the use of heat recovery 334kW, reduced power consumption 66kw, that is, power consumption per hour 66kWh.
Power consumption of air conditioning in summer: 66kWh / h × 24h × 30 days / month × 5   = 237,600 kWh, electricity price at 0.8 yuan terms, five months of the year can save electricity on refrigeration and air conditioning is: 237,600 kWh × 0.8 RMB / kWh = 190,080 yuan.
If the refrigeration unit in accordance with the consideration of non-full-load operation, the coefficient is 0.6, so you can save electricity as: 190,080 × 0.6 = 114,048 RMB yuan.
2, auxiliary boiler power saving:
Domestic hot water heating to 1T / h boiler, running 5 hours a day, boiler auxiliary electrical power of about 10kW, is five months a year the amount of electricity on refrigeration and air conditioning is: 7,500 kWh, the price calculation of 0.8 yuan , the electricity was 6,000.
These two together, you can save electricity per 114,048 +6,000 = 120,048 yuan RMB.
Direct energy costs:
As mentioned above, 10,000 m2 building area, 150 rooms, 300 passengers, 150 the size of the hotel staff, the annual operating cost savings devices: cost savings of diesel plus refrigerator and boiler operating cost saving per +120,048 = 151,200 RMB = 271,248 yuan.
Boiler flue gas emissions to reduce pollution of the environment:
1 kg of ordinary diesel combustion flue gas will produce 30m3, refrigeration and air conditioning in summer months less consumption of 54,000 kg of diesel fuel, boiler to less emissions to the external environment 162 × 104 m3 of gas. Very favorable for reducing environmental pollution.
Heat recovery system renovation project investment and payback period:
According to the transformation of Central Asia and the hotel practice, heat recovery technology engineered cooling capacity per unit investment cost calculation, about 0.6 yuan / kcal cold (depending on project circumstances vary.) The total investment of the general transformation of 1.5 to 2 years operating cost savings within. That is 1.5 to 2 years full cost recovery of transformation.
Heat recovery chiller unit renovation project for the form:
Technological transformation of the current chiller heat recovery project for hotel, restaurant, beach, hospital, office buildings, etc. for the installed piston type compressor or a screw-type chiller refrigeration system.
For air-cooled heat recovery heat pump for transformation, you can also replace the whole boiler room supply domestic hot water and winter heating, to achieve full year to stop the boiler running.
Other notes:
Heat recovery above comparison of the economic transformation of technology, are diesel fuel for the boiler, in fact, for coal and natural gas as boiler fuel, the economic advantages of equally significant.
Meanwhile, the technology can be implemented in the existing units on the transformation, does not affect the normal business, no other additional equipment space.