Air-cooled air-cooled heat pump works cleaning air conditioning units Features

Air source heat pump air source heat pump is a compressor - a circulatory system consisting of compressors and other equipment - heat exchangers - restrictor - absorber. Under the action of the refrigerant in the compressor to circulate within the system. It is completed within a booster compressor gaseous heating process (temperatures up to 100 ℃), it enters the heat exchanger with the air after the heat exchange, is cooled and converted into a liquid stream, after it runs into the heat sink, the liquid quickly and evaporates into gas again, while the temperature dropped to minus 20 ℃ --30 ℃, then heat the air around will continuously cryogenic heat transfer to the coolant. Refrigerant circulates constantly in the air to achieve a low temperature heat into high-temperature process heat and heating the cold water, which is the working principle of air-cooled heat pump units. Features 1. air-cooled heat pump units belong to small and medium sized units, apply to 200-10000 square meters of buildings. 2. Cooling Source unity, more suitable for both heating and cooling requirements of the user, eliminating the boiler room. 3. The outdoor unit is installed, eliminating the need for refrigeration room, saving construction investment. The primary energy utilization of up to 90% of air-cooled heat pump units, saving energy consumption, and greatly reduce the user cost. 5. without cooling towers, while eliminating the need for cooling water pumps and piping, reducing the investment in additional equipment. 6. The air-cooled system to replace the cooling water system is more suitable for dry areas. Cold thermal performance of this parameter is to determine the most critical parameters of air-cooled heat pumps normally use, it refers to the inlet air temperature air-cooled heat pump out of the water with the temperature of its cooling capacity or heating capacity at design conditions. It provides product samples from the manufacturers in Richard. But also found in the design of such a situation, that is, some vendors offer sample parameters have not been tested but copied from other manufacturers correlated samples. This gives the correct selection of the designer has brought some difficulties. So I propose the design may be based on the manufacturers of air-cooled heat pump compressor models configured to obtain variable condition performance curve of the compressor from the compressor manufacturer at the case of a conditional, based on design conditions of the heat pump Richard design conditions of the compressor in the heat pump cooling capacity and heating capacity, in order to determine the parameters of the sample provided authenticity. COP This value is an important parameter to determine the quality of air-cooled heat pump performance, the level of value directly affects the air-cooled heat pumps use the power, therefore, we should try to choose a high COP value unit. At present, China is the national standard COP 2.57, most imported or joint venture brands COP at about 3, individual import brand-efficient units whose value may reach 3.8. Noise Noise is also an important parameter to measure the wind cold heat pump, which is directly related to the impact on the surrounding environment, the heat pump is running. Domestic experts have been measured according to the engineering division of the various types of imported pump noise is third gear, first gear at 85dB above, the second tranche between 75 ~ 85dB, 75dB or less in the third tranche. We conduct engineering design selection should give priority to 80dB less noise in the unit. Dimensions air-cooled heat pump units are mostly arranged in outdoor rooftop, during which the device is arranged around the wall of separation between the equipment and the distance between devices have clear requirements, we must consider during the selection of equipment selected Equipment size equipment arrangement meets the dimensional requirements. Under the same premise should be preferred performance of smaller size units, to reduce the footprint of the device. Because air source heat pump operating weight mostly arranged in the roof, and therefore must be considered in the selection of the load-bearing capacity of the roof, if necessary in consultation with the professional structure, enhanced load-bearing capacity of the roof. However, when we should give priority to the selection of equipment to run lighter unit. Air source heat pump system analysis system, that is in addition to compare their cooling capacity, heating capacity, COP values, noise, operating weight, dimensions and other parameters, but also in the selection process of compression in air-cooled heat pump their respective Aircraft type condenser type and layout, configure the thermal expansion valve, an evaporator type, defrost mode, adjust the way energy and heat pump systems automation and security, and so on to analyze, compare their advantages and disadvantages in terms of system configuration . Type compressors: compressors for air-cooled heat pump type main piston, scroll, screw-type three types. According to the characteristics of the heat pump is to run a long time, compression ratio, etc., I believe that scroll and screw compressors will become the mainstream of the heat pump compressor. The reasons are: 1. scroll and screw compressors piston compressors with less than the transmission parts, so that a corresponding reduction in friction loss of the compressor, the machine's efficiency increased. 2. Due to the compression heat pump is relatively large, so the piston compressors in the same volumetric efficiency of its clearance volume decline, resulting in decreased overall efficiency. The scroll and screw compressors are no problems in this regard. 3. An air-cooled heat pump compressor in their work environment than other ordinary air compressor to harsh working conditions, and longer running time each, working conditions also vary greatly, so the compressor is reliable requirements on high. Scroll and screw compressors have fewer parts, compact structure, it is especially suitable for heat pump units. 4. The use of air-cooled heat pump units are generally used method to exclude hot gas defrost heating in winter conditions on the air-side heat exchanger frost buildup. At the beginning and end of the defrost system to reverse run, one of the original condensing coil in the accumulated liquid refrigerant due to the sudden drop in pressure which is the suction pressure steam flood the compressor, resulting in compressor wet stroke, this is no big problem for scroll and screw compressors, which can easily cause damage to the valve and the connecting rod to the piston compressor is concerned. 5. In addition to the heat pump itself, a scroll compressor and semi-hermetic screw piston noise ratio is lower. Protection and control current protection and control of domestic air source heat pump multi-computer control, which also includes a programmable control and microcomputer control, control of both roughly the same principle. A wind cold heat pump system security should include at least the following aspects: 1) the suction pressure is too low to protect 2) High discharge pressure protection 3) oil pressure protection 4) cold water temperature is too low protection 5) Water side transducer heat water protection 6) Compressor start time interval protection 7) Built-in compressor motor overheating protection 8) Motor overload 9) supply low voltage protection 10) three-phase power protection Phase 11) oil temperature control air-cooled heat pump controller It should include at least: 1) Defrost Control 2) multiple compressors sequence control 3) energy regulation 4) downtime and display 5) Remote control interface (for remote control unit to set the operating parameters as well as start and stop the unit operating parameters and fault content is displayed in the control terminal) Suzhou Tak-being of Engineering Limited to undertake various professional purification of air-cooled heat pump air conditioning unit, spray booth purify air conditioning, painting rooms fresh air temperature and humidity equipment, temperature and humidity laboratories, central air-conditioning engineering construction etc., welcome customers to inquire. 0512-67580587 Company Name: Suzhou Tak-being of Engineering Co., Ltd. Tel: 0512-67580587 Mobile: 13174108428 QQ: 1157224699 1455948309 Contact: Mr. Zheng company's Web site: http: //suzhoudekang.1688.com/ Address: Wuzhong Shao Ngong Road District No. 66 King County Metro still Collection