Water cold storage system

Abstract

The invention discloses a water cold storage system which comprises a controller and a refrigerating unit. The refrigerating unit comprises a primary cold water main machine. The inlet end and the outlet end of the primary cold water main machine are connected with a bypass loop in parallel. A first adjusting valve is arranged on the bypass loop. A first temperature sensor is arranged at the outlet end of the primary cold water main machine. The primary cold water main machine, the first adjusting valve and the first temperature sensor are all electrically connected with the controller. According to the technical scheme, the inlet end and the outlet end of the primary cold water main machine are connected with the bypass loop in parallel, and therefore water can circulate back to the primary cold water main machine through the bypass loop to be cyclically cooled till the set cold storage temperature is achieved, and large-temperature-difference cold storage can be achieved; and the first adjusting valve is arranged on the bypass loop, and the recirculation bypass water quantity of the primary cold water main machine is controlled by the controller by adjusting the opening degree of the first adjusting valve according to the water temperature detected by the first temperature sensor so that it is guaranteed that the primary cold water main machine can fully achieve the refrigerating capacity.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a water cold storage system. Background technique [0002] With the development of modern industry and the improvement of people's living standards. The application of central air-conditioning is more and more extensive, and its power consumption is also increasing. In some large and medium-sized cities, the central power consumption has accounted for more than 20% of its peak power consumption, which makes the peak-valley load difference of the power system larger. The load rate drops, and the power grid has to implement power cuts, which seriously restricts industrial and agricultural production and has a lot of impact on people's normal life. One of the effective ways to solve this problem is to apply cold storage technology to transfer the power consumption of air conditioners from the daytime peak period to the nighttime trough period, so as to balance the load of the...

AI Technical Summary

Problems solved by technology

That is to say, when the cooling capacity of the primary and secondary chillers differs greatly, if the system reaches the original operating temperature difference, the primary chiller will not be able to run at full load (100% load rate), that is, it will not be able to fully utilize The cooling capacity of the first-level chiller host, which leads to the inability to maximize the benefits of the entire cold storage system

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