Temperature and humidity independent control air conditioning system based on energy cascade utilization

Abstract

The invention discloses an independent temperature and humidity control type air conditioning system based on energy gradient utilization. The independent temperature and humidity control type air conditioning system based on energy gradient utilization comprises an evaporating and cooling high-temperature water chilling unit, a fresh air dehumidifying unit and an air-air heat exchanger, wherein the evaporating and cooling high-temperature water chilling unit, the fresh air dehumidifying unit and the air-air heat exchanger are connected through an air pipeline, the evaporating and cooling high-temperature water chilling unit and the fresh air dehumidifying unit are connected with an air conditioned room, and the evaporating and cooling high-temperature water chilling unit is connected with the sensible heat tail end in the air conditioned room. According to the independent temperature and humidity control type air conditioning system based on energy gradient utilization, low-temperature exhaust air in the air-conditioned room is used as inlet air for the evaporating and cooling high-temperature water chilling unit, the cold energy of the exhaust air is effectively recycled, and low-temperature chilled water can be obtained and conveyed to the sensible heat tail end, so that a sensible heat load of the room is taken away; fresh air is effectively pre-cooled through the low-temperature exhaust air of the evaporating and cooling high-temperature water chilling unit, then the low-temperature exhaust air enters an air-cooled condenser to take away condensation heat, the condensation efficiency is improved, and gradient utilization of energy is achieved; the evaporating and cooling high-temperature water chilling unit and the fresh air dehumidifying unit operate cooperatively, and then independent temperature and humidity control is achieved.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning and refrigeration equipment, and in particular relates to an air-conditioning system with independent control of temperature and humidity based on energy cascade utilization. Background technique [0002] The low-temperature cold water produced by the existing mechanical refrigeration will cause the problems of fan coil or capillary radiant end running in wet conditions and bacteria breeding; and the independent control of temperature and humidity is adopted, and the fresh air bears the indoor humidity load, and the fan coil, etc. The terminal air-conditioning device bears the sensible heat load, which can not only reduce the energy consumption of the air-conditioning, but also avoid condensation and bacteria breeding in the terminal air-conditioning devices such as fan coil units in the room, which is conducive to improving air quality. [0003] Existing evaporative cooling high-temperat...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an independent temperature and humidity control air-conditioning system based on energy cascade utilization, which solves the problem of the high outlet water temperature of the existing evaporative cooling high-temperature chillers, large fluctuations in water temperature with the temperature of the outdoor dry and wet bulbs, and evaporative cooling of high-temperature cold water. The problem that the exhaust air of the unit cannot be effectively used has realized the cascade utilization of energy and independent control of temperature and humidity

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