Heat-recovery type heat pump air conditioning system
A heat pump air conditioner and heat recovery technology, which is applied in the field of heat recovery heat pump air conditioning systems, can solve problems such as being unfavorable for system energy saving and power consumption, and achieve the effects of solving large heat load, reducing total load and safe and reliable operation.
Inactive Publication Date: 2011-08-17
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
During summer operation, the primary return air system mixes the outdoor fresh air with the indoor return air, treats it to the dew point of the machine, reheats it with a heater, and sends it to the room when it reaches the air supply state. The electric heating used in the reheating process consumes Electric energy, which is not conducive to the energy saving of the system
Method used
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] figure 1 It is a working principle diagram of an embodiment of the present invention; figure 2 It is the psychrometric diagram under the refrigeration working condition of the embodiment of the present invention;
[0019] image 3 is the psychrometric chart under the heating condition of the embodiment of the present invention.
[0020] figure 1 Middle, 1-compressor, 2-indoor heat exchanger, 3-subcooler, 4-throttling device, 5-outdoor heat exchanger, 6-first circulation pump, 7-fresh air heat and mass exchange equipment, 8- Mixed air heat and mass exchange equipment, 9-second circulation pump, 10-humidifier, 11-fan, 12a, 12c-temperature control valve, 12b,, 12d-solenoid valve, 12e-bypass valve, 13-four-way changer Directional valve, 14-mixed air reheating equipment, 15a, 15b, 15c, 15d-one-way valve.
[0021] like figure 1 As sho...
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The invention relates to a heat-recovery type heat pump air conditioning system, comprising an air processing unit and a heat pump unit. The heat-recovery type heat pump air conditioning system is characterized by also comprising a super-cooler, wherein two ports of the third medium of the super-cooler are connected with two ports of fresh-air heat exchanging equipment respectively; furthermore, the connecting circuit is provided with a second circulation pump; the first port of a first medium of the super-cooler is connected with the first port of a throttling device; four check valves are divided into two groups and connected in series and subsequently connected in parallel; the second port of the throttling device is connected with a fourth node of a check valve circuit; the second port of the first medium of the super-cooler is connected with a second node; the second port of the first medium of an indoor heat exchanger is connected with the first node; and the second port of the first medium of an outdoor heat exchanger is connected with the third node. In the invention, the condenser bears small total load, the heat energy can be utilized effectively, and the energy-saving effect is good.
Description
technical field [0001] The invention relates to the technical field of air conditioning and refrigeration, in particular to a heat recovery heat pump air conditioning system. Background technique [0002] With the improvement of people's living standards, the requirements for the comfort of the environment are getting higher and higher, and the central air-conditioning system plays an important role in various buildings. In the general comfort centralized air conditioning system, the primary air return system is the most typical air conditioning system. When operating in winter, the primary return air system means that the outdoor fresh air is mixed with the indoor return air, and then heated and humidified to reach the air supply state and sent indoors. Since the outdoor fresh air temperature is very low, it takes a lot of heat to reach the supply air temperature during heating. The utility model patent with the notification number CN201503099U provides a ground source he...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F24F5/00F24F12/00F24F13/30F24F11/02
CPCY02B30/16Y02B30/123Y02B30/52Y02B30/563Y02B30/56
Inventor 张丽娜李浙段南兰谭凌宇
Owner NINGBO UNIVERSITY OF TECHNOLOGY