A cold recovery type variable capacity air source heat pump system

Abstract

A cooling capacity recovery type variable capacity air source heat pump system, involving a combined heating and cooling system operating alternately or simultaneously, the first subsystem and the second subsystem share a dual-channel variable capacity heat exchanger; the main body of the heat exchanger includes two Two independent refrigerant tube-side channels, the refrigerant in the two channels exchanges heat with the heat medium water in the shell-side channel at the same time; the shell-side channel establishes a water-medium heating cycle through the hot water circulation pipeline and the hot water circulation pump; The first subsystem and the second subsystem are connected to the two refrigerant tube channels through the control valve group to establish a dynamically controllable refrigerant circulation loop; the heat pump system controls the control valve group of the dual-channel variable-capacity heat exchanger. In the on-off state, the dual-channel variable-capacity mode is realized through the dual-channel variable-capacity heat exchanger, which can effectively use the heat exchange area of ​​the shell-and-tube heat exchanger, so it can meet the requirements of stable output under heavy load conditions, and the overall operating efficiency of the unit is greatly improved. to achieve energy-efficient operation of the heat pump system.

Description

technical field [0001] The invention relates to a combined heating and cooling system that operates alternately or simultaneously, and in particular to a heat pump combined cooling and heating system that mainly supplies heat while taking into account the supply of cold. Background technique [0002] The introduction of the slogan of intensive society construction promotes a higher degree of integration of the internal functions of the building itself, and the maximization of energy utilization has become a current topic. Today, commercial and commercial places have higher and higher requirements: the air side requires control of suitable temperature and humidity and air cleanliness; the water side water temperature requires suitable year-round. However, the traditional method of separate supply of cold and heat sources has obviously caused the misplacement of resources in different seasons, and at the same time, the initial investment cost of equipment has also been greatly...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a cold recovery type variable capacity air source heat pump system, which is used to solve the problem of reducing equipment scale, saving equipment investment and operating costs, and improving heat exchange efficiency in the process of replacing traditional heating methods with heat pump combined cooling and heating systems and technical issues of unit energy efficiency

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