Four-pipe energy elevator and water chilling unit coupled air conditioning system provided with double water collecting and distributing devices and using method of air conditioning system

Abstract

The invention relates to a four-pipe energy elevator and water chilling unit coupled air conditioning system provided with double water collecting and distributing devices and a using method of the air conditioning system. The system comprises a water chilling unit, a four-pipe energy elevator, an outdoor side heat exchange system, a first air conditioner cold water circulating pump, a second airconditioner cold water circulating pump, a cold water collector, a cold water distributor, an air conditioner cold water system constant-pressure device, an air conditioner hot water circulating pump,a cold/hot water collector, a cold/hot water distributor, an air conditioner hot water system constant-pressure device, a switching valve and a differential pressure bypass valve set; and the four-pipe energy elevator and water chilling unit coupled air conditioning system provided with the double water collecting and distributing devices is constructed by using the four-pipe energy elevator andsimultaneously arranging the air conditioning cold water collecting and distributing device, the air conditioning hot water collecting and distributing device and the switching valve. With adoption ofthe system, the defect that a traditional two-pipe air conditioning system composed of the water chilling unit and a heat pump unit cannot supply cold and heat at the same time is overcome, the demands for cold supply and heat supply in winter can be met more efficiently, conveniently and flexibly in an energy-saving mode, and the indoor comfort degree is increased.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to an air-conditioning system with double collectors and distributors coupled with a four-pipe energy hoist and a water chiller and a method for using the same. Background technique [0002] Large-scale public buildings in hot summer and warm winter regions (especially in the hot summer and warm winter southern region), such as hotels, hospitals, complexes, etc., have a year-round load characteristic of large cooling load in summer and relatively high outdoor temperature in winter. The load is small, and the heat load is mainly fresh air heat load; due to the large scale and depth of the building, the internal and external partitions of the air conditioner are very obvious. cooling load. This type of building requires the air-conditioning system to provide cooling in summer and provide cooling and heating for the inner and outer areas at the same time in winter. [0003] The air-condi...

AI Technical Summary

Problems solved by technology

[0003] The air-conditioning system constructed by the traditional chiller + heat pump unit can only meet a single cooling or heating requirement, and it is difficult to meet the air-conditioning needs of buildings with both cooling and heating loads; the air-conditioning system constructed by the traditional commonly used chiller + boiler can It meets the requirements of cooling and heating at the same time, but the initial investment is large, the operating cost is high, the area of ​​the machine room is large, and there is a possibility of safety accidents in the boiler room

Invention patent ZL201510631865.2 discloses a dual-collector-distributor four-pipe air-conditioning system coupled with a heat pump unit coupled with a chiller and its use method. Although it solves the technical problem of simultaneously supplying cooling and heating to the inner and outer areas in winter, However, the following problems still exist: chillers are used for cooling in winter, and heat pump units are used for heating. Perform valve switching operation

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