A low-temperature air-conditioning unit with dual cold source latent heat treatment and its control method

Abstract

The invention discloses a double-cold-source latent heat treatment low-temperature air conditioning unit and a control method thereof. The air conditioning unit comprises an outer frame subassembly, an air handling system, a refrigerant water cooling system, a refrigerating system I, a refrigerating system II, a refrigerating system III, a refrigerating system IV and a control system. Compared with the conventional single-cold-source latent heat treatment low-temperature air conditioner, the double-cold-source latent heat treatment low-temperature air conditioning unit disclosed by the invention is higher in energy efficiency ratio, capable of saving more energy, reasonable in design, efficient, energy-saving, accurate in control, stable and reliable in operation, has the double-cold-source selection function to solve the problem that the chilled water cold source of the air conditioner for regulating temperature with higher utilization energy efficiency is in surplus, can save the energy and reduce the environmental pollution, and meets the nationally proposed energy-saving and environment-protecting policies.

Description

technical field [0001] The invention relates to a low-temperature air-conditioning unit, in particular to a low-temperature air-conditioning unit with dual cold source latent heat treatment and a control method thereof. Background technique [0002] In order to meet the humidity control requirements of the air-conditioning environment, the current latent heat treatment low-temperature air conditioner products are used to reduce the humidity of the air by cooling the air with a large enthalpy difference, and to adjust the humidity of the air-conditioned room, combined with the air-conditioning system for efficient temperature adjustment, To achieve the purpose of temperature and humidity regulation and control in air-conditioned rooms. [0003] However, the existing latent heat treatment low-temperature air conditioner products only use a single cooling source and a single-stage refrigeration method for refrigeration systems. For example, when the inlet air temperature is 30°...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a dual cold source latent heat treatment low-temperature air conditioner unit and its control method, aiming to solve the problem of low energy efficiency ratio, long-term operation instability, and low control accuracy of the existing latent heat treatment low-temperature air conditioner, and the latent heat treatment low-temperature air conditioner Unable to use air conditioning chilled water for temperature adjustment

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