District cooling system and method capable of achieving dynamic cold storage

Abstract

The invention discloses a district cooling method capable of achieving dynamic cold storage. A district cooling system capable of achieving dynamic cold storage is included. The method comprises the following steps that the following corresponding stages, the dynamic water storage cooling stage, the dynamic cold storage switching cooling stage, the ice storage cooling and onboard refrigerating unit cooling stage and the ice cold cooling and onboard refrigerating unit and dual-condition refrigerating unit cooling stage, are distributed according to the actual load rates. On the premise of meeting user requirements, cold storage schemes are set in a staged manner by combining the stage construction condition of a cooling station, cold is rationally divided into the corresponding cooling stages according to the actual load rates of district users, cold of various cooling sources is utilized to the largest degree in the stages, the cooling efficiency of the district cooling system is remarkably improved, and energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of cooling, in particular to a district cooling system and method capable of dynamic cold storage. Background technique [0002] As a highly intensive and large-scale energy-efficient utilization technology, the district cooling system has been vigorously promoted in China. It is often set up as a municipal infrastructure and is usually implemented simultaneously with urban planning and construction. Due to the long construction period of the city, the low occupancy rate of users in the early stage of construction, the slow growth of users and other factors, in fact, the load of district cooling users will gradually increase in a long period, and the initial stage of construction usually exceeds Run at low load for a long period of time. [0003] However, judging from some current actual project experience, based on the problems of long cooling user load growth cycle and low initial load in the cooling station, the p...

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Problems solved by technology

[0003] However, judging from some current actual project experience, based on the problems of long cooling user load growth cycle and low initial load in the cooling station, the phased construction plan is generally adopted, that is, the civil construction is completed at one time, and the equipment is installed in phases. Although this method can Part of the investment was saved, but the effect was not obvious. After the preliminary civil works were completed, the installed equipment would basically be put into use. Due to the problem of cooling user load, the utilization rate and efficiency of the civil works of the preliminary cooling station and the main engine were low, especially for large-scale In the ice storage system, only part of the ice storage equipment was installed in the early stage, resulting in low utilization rate of the large ice storage tank, large cooling loss, and low efficiency of the main machine when making ice

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