Chilled water heat recovery air conditioning system and using method thereof

Abstract

The invention discloses a chilled water heat recovery air conditioning system and a using method thereof. A water source heat pump unit for heat recovery is additionally arranged in a refrigerating machine room, return water of an air-conditioning chilled water system is directly used as the heat source side of the water source heat pump unit, and heat recovery is conducted; and preheating is provided for a building domestic hot water system or tap water is directly heated into usable domestic hot water, and meanwhile cooling capacity generated for free is returned to the chilled water system, so that the chilled water heat recovery air conditioning system coupled with a water source heat pump and a water chilling unit is constructed, is economical, healthy, environment-friendly and energy-saving and is suitable for buildings and particularly buildings such as large hotels and hospitals which need cold supply all year round and have domestic hot water requirements all year round.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to a chilled water heat recovery air-conditioning system and its application method. Background technique [0002] Under the national goal of "carbon peaking and carbon neutrality", effectively improving the energy efficiency of the refrigeration room has become an important direction for practitioners in the HVAC industry. For large public buildings that have both cooling and heating needs throughout the year, to improve the energy efficiency of the refrigeration machine room, in addition to equipment optimization, pipeline optimization, and selection of high-efficiency control systems, the efficient coupling of the building’s cooling and heating systems is also a way to improve the energy efficiency of the machine room. An important measure of energy efficiency. [0003] For large public buildings in hot summer and warm winter and hot summer and cold winter regions, due to the large ...

AI Technical Summary

Problems solved by technology

In addition, the direct heat recovery system, whether it is full heat recovery or partial heat recovery, heat recovery is greatly affected by the operating conditions of the chiller. When the heat recovery chiller is shut down due to regulation or maintenance, heat recovery cannot be performed; and , in order to achieve continuous heat recovery, the continuous use of heat recovery chillers is required, which increases the failure rate of chillers, shortens their service life, and affects the stability of the building's cold source system

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