Temperature and humidity independent control type air conditioning system with high-temperature cold water pre-cooling

Abstract

The invention relates to a temperature and humidity independent control type air conditioning system with high-temperature cold water pre-cooling. The air conditioning system comprises a high-temperature refrigeration station, sensible heat terminals and air dehumidifying processing units, wherein the sensible heat terminals and the air dehumidifying processing units are arranged in a room; the high-temperature refrigeration station comprises a high-temperature cold water unit and a chilled water pump; each air dehumidifying processing unit comprises a pre-cooling surface cooler, an evaporator, a compressor, a water-cooled surface cooler and a throttling valve, wherein the evaporator, the compressor, the water-cooled surface cooler and the throttling valve are sequentially connected to form a refrigerant circulation loop, and the pre-cooling surface cooler and the evaporator are sequentially arranged on a to-be-dehumidified air channel; the high-temperature cold water unit is connected with the sensible heat terminals, the pre-cooling surface coolers and the water-cooled surface coolers through the chilled water pump; and water return pipelines of the sensible heat terminals, pre-cooling surface coolers and the water-cooled surface coolers are connected with the high-temperature cold water unit.

Description

technical field [0001] The invention relates to an air-conditioning system for independent temperature and humidity control by using high-temperature cold water for precooling, and belongs to the technical field of air-conditioning. Background technique [0002] The regulation process of the indoor thermal and humid environment of buildings includes the regulation of indoor temperature and humidity. Conventional air-conditioning systems usually use a single cold source to realize the regulation of temperature and humidity at the same time. Adapting to the hourly changes of indoor sensible heat load and humidity load cannot achieve effective regulation of the building's thermal and humid environment. As a new form of air conditioning system, the temperature and humidity independent control air conditioning system uses different means to adjust the indoor temperature and humidity: by sending dry air to bear the indoor humidity load and adjust the humidity, and by using high te...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned air dehumidification process, when low-temperature cold water is used for further dehumidification, a separate low-temperature chiller and corresponding cold water pipelines need to be installed in the system. At this time, there will be two sets of cold water pipelines in the system, and the complexity of the system will increase greatly; When low-temperature refrigerant is used to condense and dehumidify, it is necessary to uniformly consider the condensing heat removal method of the independent heat pump cycle. Usually, it is necessary to set up a separate cooling water pipeline or use air-cooled cooling to remove heat. The former increases the complexity of the system, and the latter increases the complexity of the system. or limit the system energy efficiency level

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