Serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system

Abstract

The invention relates to a serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system which is used for refrigerating by a high temperature type water-cooled compression condensing unit by utilizing low-price electric power in the electricity trough period at night; the high-pressure refrigerant liquid is directly sent into an evaporator after being throttled for evaporative refrigeration by applying the 'throttling refrigeration effect' principle of 'Joule-Thomson' law, so that apparent heat and latent heat of water in an ice storage tank are absorbed, and the aims of ice making and cold accumulation are achieved. The system comprises a double-temperature ice storage system, a temperature and humidity separately-control air conditioning terminal system, a PLC (programmable logic controller) intelligent control system, etc. A new concept that partial load ice-making cold accumulation is replaced by full load ice storage is applied; three technical innovation measures including adopting a 8-18 DEG C high-temperature difference water supply mode, adopting a temperature and humidity double-control air conditioner running mode and taking the high temperature type water-cooled compression condensing unit as an ice storage cold source mode are adopted, wherein the refrigerating capacity of the high temperature type water-cooled compression condensing unit is higher than the rated refrigerating capacity by 25-30%. The cold storage capacity of the double-cold source ice storage tank is increased by more than 24-51% compared with that of the existing ice storage air conditioning system. In the daytime, the system can provide 8-14 hours of hot and wet load for an air conditioning system, thus reducing operating cost by more than 85%; the system can be widely applied to or used for replacing various air conditioning systems, and is a radical innovation and technical revolution of the ice storage air conditioning system worldwide.

Description

technical field [0001] A serialized direct evaporative ice-water storage dual-cooling source air-conditioning system, a kind of low-priced electricity in the valley period of night electricity consumption, which starts high-temperature water-cooled compression condensing units for refrigeration, and applies the "Joule-Thomson" law of "throttling Based on the principle of "cold effect", the high-temperature and high-pressure refrigerant liquid is throttled and directly sent to the evaporator for evaporation, absorbing the sensible heat and latent heat of the water in the ice storage tank, and an air-conditioning system for ice making and cold storage. The ice storage tank is equipped with two cold sources with different temperatures. One cold source uses a large temperature difference cooling method to provide chilled water at 8°C to 18°C ​​for the dry-type air-conditioning terminal equipment in the temperature-humidity separate control air-conditioning terminal system, eliminat...

AI Technical Summary

Problems solved by technology

The energy efficiency ratio (COP) of air-conditioning chillers is generally between 3.5 and 5.8, resulting in waste of energy grade

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