Low-temperature water supply large-temperature-difference cold source and air conditioning system

Abstract

The invention discloses a low-temperature water supply large-temperature-difference cold source and an air conditioning system. The low-temperature water supply large-temperature-difference cold source and the air conditioning system are characterized in that an air inlet of an indirect evaporative cooling water supply device is provided with a surface cooler; the indirect evaporative cooling water supply device is connected to an inlet of a primary side of a plate heat exchanger, and an outlet of the primary side of the plate heat exchanger is connected to an inlet tube of the surface cooler;a freezing water outlet pipe of an evaporator is connected to a user water supply, and an outlet pipe of a user water return is connected to an inlet of a secondary side of the plate heat exchanger;and an outlet pipe of the surface cooler is connected to a cooling water inlet of a condenser of a mechanical compression type cold water machine, and a cooling water outlet pipe of the condenser is connected to a spraying device of the indirect evaporative cooling water supply device. The low-temperature water supply large-temperature-difference cold source and the air conditioning system have the advantages that the structure is reasonable, the cold water temperature of users is reduced, and the problems that the indirect evaporative cooling water supply device is high in water outlet temperature and the comfort requirement of an air conditioner cannot be met are solved; the capacity of a refrigerating unit is effectively reduced; and the cold amount of the cold water is fully released,the temperature difference of the indirect evaporative cooling water supply device is improved, and the energy-saving performance is obvious.

Description

technical field [0001] The invention belongs to an air treatment device in the field of heating, ventilation and air conditioning, in particular to a low-temperature water supply and large temperature difference cold source and an air-conditioning system. Background technique [0002] The performance of the indirect evaporative cooling water supply device changes with the wet bulb temperature of the outdoor air entering the indirect evaporative cooling water supply device. advantages and achieved good application results. However, in some areas with high humidity, due to the high moisture content and relative humidity of the outdoor air, the outlet water temperature of the indirect evaporative cooling water supply device is too high, and the temperature drop is limited. When directly used as cold water to supply the air conditioning system, it cannot meet the requirements of the air conditioner Temperature comfort requirements of end users. If the indirect evaporative cool...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a cold source for low temperature water supply with large temperature difference and an air conditioning system. The water temperature of the evaporative cooling water supply device is high and cannot meet the comfort requirements of the air conditioner; the evaporative cooling can be fully utilized to reduce the ratio of the indirect evaporative cooling water supply device and the mechanical compression refrigeration unit, effectively reducing the indirect evaporative cooling water supply device and the capacity of the mechanical compression refrigeration unit; through reasonable matching of air conditioner users, the cooling capacity of the cold water can be fully released, and the temperature difference of the evaporative cooling water supply device can be improved, and the energy saving is obvious

[0006] The present invention combines the indirect evaporative cooling water supply device with the mechanical compression refrigeration unit. Compared with the air conditioning system that only uses the indirect evaporative cooling water supply device as the cold source, it reduces the user's cold water temperature and solves the problem of partial relative humidity. In high areas, the outlet water temperature of the indirect evaporative cooling water supply device is high, which cannot meet the comfort requirements of the air conditioner; at the same time, through reasonable valve adjustment, optimize the design of the waterway process, make full use of evaporative cooling, and reduce the indirect evaporative cooling water supply device and machinery. The ratio of the compression refrigeration unit effectively reduces the capacity of the indirect evaporative cooling water supply device and the mechanical compression refrigeration unit; by reasonably matching the air conditioner user, the cooling capacity of the cold water is fully released, and the temperature difference of the indirect evaporative refrigeration water supply device is increased. , obvious energy saving

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