Cooling device for multi-energy-source large-temperature-difference areas

Abstract

The invention discloses a cooling device for multi-energy-source large-temperature-difference areas. The cooling device comprises a cooling station, a transmission pipeline network and a user side, wherein the cooling station comprises a refrigerating system, an energy storage system, a water distributor and a water collector, a mounted absorption water chilling unit and a mounted centrifugal water chilling unit of the refrigerating system are connected in series, an inlet of the mounted absorption water chilling unit is connected with a reservoir and a chilled water return pipe of the water collector through valves respectively, and an outlet of the mounted centrifugal water chilling unit is connected with the reservoir and a chilled water supply pipe of the water distributor through valves respectively; an inlet of the reservoir is connected with the outlet of the mounted centrifugal water chilling unit and a cold exchange end outlet of an impoundment cooling plate through valves respectively, and an outlet of the reservoir is connected with the inlet of the mounted absorption water chilling unit and a cold exchange end inlet of the impoundment cooling plate through valves respectively. Multiple energy sources can be fully utilized, cooling can be achieved by means of waste heat, gradient utilization of energy can be achieved, and primary energy ratio can be increased.

Description

technical field [0001] The invention relates to the technical field of regional energy combined cooling, heating and power supply, in particular to a multi-energy large temperature difference regional cooling device. Background technique [0002] District cooling is a cooling method that uses centralized large-scale cooling stations to provide chilled water to cooling units within a certain range. Like running water, electricity, and gas, it is a public utility and one of the urban infrastructures. Due to its advantages in energy saving, emission reduction, environmental protection, and operation management, it has won a lot of attention in countries and regions such as Europe and the United States. extensive development. In recent years, many district cooling systems have been put into use in Beijing, Guangzhou, Shanghai, Chongqing, Shaoxing and other cities in my country, meeting people's increasing requirements for quality of life. District cooling (energy) systems are ...

AI Technical Summary

Problems solved by technology

[0004] The main disadvantage of district cooling is the three problems caused by the increase of cold water transportation distance: high energy consumption in transportation; large investment in pipe network; large cooling loss in pipe network

However, this cooling method has the following problems: Due to the limitation of the characteristics of the lithium bromide refrigeration unit itself, the minimum supply temperature of cold water can only reach 7°C

Large temperature difference cooling and low-temperature air supply cannot be realized, and the distance of centralized cooling is limited. In addition, because the temperature difference of cooling is only 5°C (7°C-12°C), the diameter of the cooling pipe network is required Larger, larger initial investment in the pipeline network

The absorption unit itself has low efficiency

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