Phase change heat storage device based on condensation heat transfer and key parameter determining method thereof

Abstract

The invention provides a phase change heat storage device based on convective heat exchange and a key parameter determining method thereof. The device comprises a condensation sleeve and a phase change heat storage device shell. A steam inlet, a condensation sleeve connector, an overflow valve and a condensate pump are arranged on the phase change heat storage device shell. The steam inlet is located in the vertex angle of the phase change heat storage device shell. The condensate pump is positioned at a bottom corner opposite to the steam inlet; at least one set of first steam channel plate and second steam channel plate are arranged in the phase change heat storage device shell in parallel. The steam channel plate and the condensate liquid level divide an inner cavity of the phase changeheat storage device shell into a plurality of wavy steam condensation channels; a plurality of condensation sleeves are inserted into the phase-change heat storage device shell through the condensation sleeve connectors in a penetrating manner; the condensation sleeve is axially parallel to the first steam channel plate; the condensation sleeve in each steam condensation channel is arranged in awavy shape in the height direction. The final design of the phase change heat storage device can be obtained through a parameter determination method, and the requirement for the heat dissipation capacity is reduced.

Description

technical field [0001] The invention belongs to the field of phase change heat storage, in particular to a condensation heat transfer based phase change heat storage device and a method for determining key parameters thereof. Background technique [0002] For the heat dissipation of high-power electronic equipment, due to the high heat flux density on its surface, it can reach 100W / cm 2 ~1000W / cm 2 , Microchannel flow is often used as a heat transfer enhancement method to improve surface heat transfer capacity, such as the microchannel evaporator with patent number 201910591725.5. Due to the high flow resistance in the microchannel, in order to reduce the design requirements of the circulating water pump, it is necessary to increase the heat dissipation per unit volume of refrigerant, and boiling the input liquid refrigerant is a common method to increase the heat dissipation per unit volume of refrigerant. [0003] The heat dissipation process of electronic equipment fluc...

AI Technical Summary

Problems solved by technology

Among the current phase change heat storage devices, such as the phase change heat storage device of patent No. 201720508512.8, only the input conditions of the liquid phase refrigerant are considered, and it cannot match the heat storage requirements when the gas-liquid mixed refrigerant is input.

Images