Multi-cold-source large-temperature-difference temperature-humidity-separately-controlled air conditioning system

Abstract

The invention relates to a multi-cold-source large-temperature-difference temperature-humidity-separately-controlled air conditioning system. The air conditioning system comprises a cold source system and a tail end system, wherein the cold source system involves a low-temperature water chilling unit (1), a medium-temperature water chilling unit (9), a high-temperature water chilling unit (15), a cooling water system and an ethylene glycol circulation system, wherein the cooling water system and the ethylene glycol circulation system are correspondingly connected with the low-temperature water chilling unit, the medium-temperature water chilling unit and the high-temperature water chilling unit; and the tail end system comprises a temperature control system and a humidity control system. According to the air conditioning system, the high-temperature water chilling unit, the medium-temperature water chilling unit and the low-temperature water chilling unit which are connected in series are adopted, so that the temperature difference between supply water and return water is increased, supply water flow is reduced, the defect that the energy efficiency of the low-temperature unit is low is overcome by fully utilizing the characteristic that the energy efficiency of the high-temperature water chilling unit and the medium-temperature water chilling unit is high, and the cool storage air conditioning system is fully exerted to conduct the peak clipping and valley filling and saves the operation cost and the energy consumption of the air conditioning system; and meanwhile, a multi-outlet plate type heat exchanger is adopted, the tail end can provide two air conditioning water systems with different temperatures, so that the temperature difference between the supply water and the return water at the tail end is increased, and the energy consumption of an air conditioning water pump is saved.

Description

technical field [0001] The invention belongs to the technical field of central air-conditioning systems, and in particular relates to an energy-saving and cost-saving temperature-humidity separate control air-conditioning system. Background technique [0002] In the air-conditioning system, in order to meet the needs of urban electricity shaving peaks and filling valleys, ice storage and water storage are used, and low-temperature chillers (dual-condition chillers) are used at night to produce low-temperature cold water and store it in the form of ice or water. During the peak hours of electricity consumption during the day, the cooling capacity stored at night is provided to users without turning on the chiller, which saves electricity consumption during peak hours and also saves operating costs. However, the cold storage air conditioner will increase the initial investment and increase the energy consumption of the air conditioning system, and it will not save energy. [...

AI Technical Summary

Problems solved by technology

[0004] How to combine the two air conditioning systems well, there is no special solution at present

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