Ground source heat pump air-conditioning system and fresh air processing method thereof

Abstract

The invention discloses a ground source heat pump air-conditioning system and a fresh air processing method thereof. The ground source heat pump air-conditioning system comprises a ground source heat pump unit, a ground source heat exchanger, a fresh air unit, a radiant heating ground coil and a cold radiant ceiling device. One outlet end of the ground source heat exchanger is connected to the cold radiant ceiling device controlled by a valve opened in summer and closed in winter, while the other outlet end is connected to a first heat calorie exchanging device. Both the outlet ends are connected to an outer heat exchanger of the ground source heat pump unit. An outlet of the outer heat exchanger is connected to an inlet of the ground source heat exchanger through a first circulating pump. An outlet end of the inner heat exchanger of the ground source heat pump unit is divided into two paths, wherein one path is connected to the radiant heating ground coil controlled by a valve opened in summer and closed in winter, and the other path is connected to a second heat calorie exchanging device. Both the paths are connected to an inner heat exchanger of the ground source heat pump unit. The ground source heat pump air-conditioning system has obvious energy-saving effect and stable and reliable operation of the system, is sanitary, does not pollute the underground water and has wide application prospect in the regions which are rich in underground water and are cold in winter and hot in summer.

Description

technical field [0001] The invention relates to the technical field of air conditioning and refrigeration. Background technique [0002] In the existing technology, the form of radiant air conditioning with "radiant terminal device" plus "independent fresh air system" has attracted more and more attention from the industry. Its radiant terminal device can adopt radiant ceiling or radiant buried pipe. The radiant terminal can take away the sensible heat load in the room, and its independent fresh air system can take away the full heat load of the fresh air and the indoor latent heat load, providing cold / hot freshness for the air-conditioned room. The air makes the indoor environment very comfortable. The fresh air units of this type of radiant air conditioner use the cold / hot water produced by the heat pump unit to process the fresh air. Since the full heat load of the outdoor fresh air is borne by the heat pump unit, when the indoor and outdoor temperature difference is lar...

AI Technical Summary

Problems solved by technology

[0004] The existing groundwater ground source heat pumps use groundwater to directly cool the condenser of the ground source heat pump unit or heat the evaporator of the ground source heat pump unit. (such as adopting cooling tower cooling method) all have greater improvement, yet, with regard to the groundwater ground source heat pump of prior art, the natural heat or heat energy stored in groundwater has not been directly used for cooling high-temperature outdoor fresh air or heating low-temperature Outdoor fresh air, which causes the loss of cooling / heating energy of groundwater that could have been directly used for cooling or heating

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