Direct cool water supply cool-storage air conditioner system and its operation method

Abstract

The invention discloses a cool storage air conditioning system providing cold water directly and the running method. Electric valve V1 is set at the front of branch road of outlet port of refrigeration host computer and connected pipe is set between the absorbing end of cold supply pump and the main return pipe at the end of air conditioner. Adjusting valve V3 is set on the connected pipe and adjusting valve V4 is set on the branch road of providing cold. By selecting open or close of said electric valve loop structures with various working station are composed to realize control for different running method to system. The invention is provided with compact structure, simple control and it can realize exchange of multiple running strategies. While requirement for external loading is satisfied, output cold quantity of refrigeration host computer and cold storage slot is assigned in reason. The utilization for cold quantity in cold storage slot is improved so as to transfer electric consumption in peat at the maximum extent and save running cost.

Description

technical field [0001] The invention relates to a water cold storage air-conditioning system, in particular to a direct cooling water cold storage air conditioning system that balances the cooling capacity output by a refrigeration host and a cold storage tank; the invention also relates to an operation method of the system. Background technique [0002] Water-storage air-conditioning refers to a technology that uses off-peak electricity to store cold energy in a cold storage tank, and then releases cold energy during peak power consumption. With the active implementation of peak and valley electricity prices in the power sector, water storage, as an economical storage method, is being used more and more widely, and water storage technology is becoming more and more mature. [0003] The direct cooling water storage system is widely used in the air conditioning water storage system, especially in the application of the air conditioning system with the building height less tha...

AI Technical Summary

Problems solved by technology

[0005] 1) The water supply temperature T3 of the air conditioner cannot be adjusted constantly, resulting in excessive fluctuations in the return water temperature of the air conditioner, and the mixed cold loss of the return water entering the cold storage tank will be too large

[0006] 2) Under cooling conditions, the cold storage tank cannot achieve constant cooling, that is, the cold tank priority operation strategy cannot be realized

[0007] 3) Due to the excessive fluctuation of the return water temperature of the air conditioner, when the return water temperature is low, the cooling host will be unloaded, so the constant cooling supply of the cooling host cannot be guaranteed, that is, the priority operation strategy of the cooling host cannot be realized

[0008] 4) The priority of the cold storage tank is that the cold storage tank controls the release of cooling capacity during the cooling stage. If the release is too much, it cannot meet the needs of the external load in the later stage of cooling. It will cause an increase in the cooling capacity of the refrigeration host, that is, an increase in operating costs

If the cooling capacity of the refrigeration unit cannot be kept within a certain range, it may cause the cold storage tank to be released in advance, and at the end of the cooling period, the refrigeration unit will not be able to meet the needs of the external load

Images