Cascaded ice-storage air conditioning system and method utilizing same to supply cold air for air conditioner

Abstract

The invention discloses a cascaded ice-storage air conditioning system and a method utilizing same to supply cold air for an air conditioner. The cascaded ice-storage air conditioning system comprises a centrifugal cooling water system, a dual-mode unit system and an ice cold-storage system, wherein the centrifugal cooling water system comprises a centrifugal cooling water circuit and a centrifugal refrigerant circuit; the dual-mode unit system comprises a dual-mode cooling water circuit and a dual-mode refrigerant circuit; the ice cold-storage system comprises a refrigerant circuit; a first evaporator and a second plate-type heat exchanger form an independently connected circular cooling water circuit along with a frozen water pump, a water segregator, end equipment and a water collector respectively; the centrifugal cooling water system is connected with the dual-mode unit system by a first plate-type heat exchanger; the first plate-type heat exchanger is connected with the cooling water pump and the first evaporator so as to form an ice-making frozen water circuit; the first plate-type heat exchanger and a second cooling water pump and a second condenser form the ice-making frozen water circuit, and the end equipment is connected with the air conditioner that needs to be supplied with cold air. The cascaded ice cold-storage air conditioning system has high efficiency, can supply cold air reliably, can prepare and store ices effectively at low valley, and can save energy and charges.

Description

technical field [0001] The invention relates to a cooling system for an air conditioner, in particular to a cascade ice storage air conditioner system. [0002] The present invention also relates to a method for cooling the air conditioner by using the above-mentioned cascade ice storage air conditioner system. Background technique [0003] Air conditioning energy saving is an important part of building energy saving. At present, there are three commonly used cooling methods for air conditioners. The first is ice storage alone for cooling, the second is ice storage combined with dual-working condition unit system for cooling, and the third is single-stage or bipolar centrifugal units. For cooling. [0004] Ice storage technology is one of the key technologies for air-conditioning energy saving. It has the characteristics of balancing the grid load, reducing the installed capacity of power plants, shifting peaks and filling valleys, saving energy and reducing emissions, sav...

AI Technical Summary

Problems solved by technology

There are two deficiencies in the ice storage system composed of units with dual working conditions: one is the low efficiency, small amount of ice production and high energy consumption in the ice production mode

Second, the cooling efficiency of the air conditioner is not as high as that of the centrifugal chiller

However, there are two deficiencies in the air conditioning system composed of single-stage or double-stage centrifugal chillers: one is that it cannot make ice and store energy

Second, it is necessary to configure a spare unit to ensure the long-term safe and reliable operation of the system. The initial investment is high and causes equipment to be idle and resources to be wasted

Images