Dual-purpose energy-saving air conditioning device with ice storage and heating functions

Abstract

The invention discloses a dual-purpose energy-saving air conditioning device with ice storage and heating functions. The dual-purpose energy-saving air conditioning device adopts combination of a water-cooled chiller unit and an energy-saving plate-ice machine; the energy-saving plate-ice machine adopts a blow-up evaporator and a hot-gas bypass pressurizing backflow and continuous ice-melting device so as to form three circulating systems for ice making and storage, refrigeration and heating respectively, can store ice and supply cold for peak-load shifting of a power grid in summer and can extract water-ice phase-change latent heat for high-efficiency clean heating in winter, so that the cold-supply and heating comprehensive efficiency can be greatly improved, the electric charge and theinvestment are reduced, and especially the water-cooled chiller unit can be transformed into a high-efficiency energy-saving environment-friendly device with integration of ice storage, refrigerationand heating in low cost.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a dual-purpose energy-saving air conditioner for ice storage and heating. Background technique [0002] In the vast cold-winter and hot-summer regions, large-scale buildings now generally use two separate sets of water-cooled chillers for refrigeration and boiler heating. In summer, the refrigeration unit runs while the heating device is idle, and in winter the heating device operates while the refrigeration unit is idle. Double costs and comprehensive investment are very high. Big. Water-cooled chillers are high-efficiency and energy-saving refrigeration devices, and are the first choice for large buildings. Because the cooling load of buildings is large, the configuration of the refrigeration unit needs to meet the maximum cooling load in summer. The configuration power is large and the investment is large; and because there is no low-temperature heat source, it cannot be...

AI Technical Summary

Problems solved by technology

Conventional ice machines such as plate ice machines, flake ice machines, block ice machines, etc. can extract the latent heat of phase change of water and ice in winter, and can also produce ice and store ice during the low-cost off-peak electricity period at night in summer. Below -18°C, condensing temperature above 45°C, high energy consumption, large investment, poor economy

Conventional plate ice machines use tube-plate heat exchangers or plate-plate heat exchangers, which are made by brazing or laser welding, which is expensive

At present, conventional plate ice machines usually use hot fluorine to defrost and de-ice. The ice-making cycle system of the unit operates intermittently, which has low efficiency, and has high requirements on the compressor and its refrigeration system, and the system configuration cost is too high.

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