Vertical-type heat-storage water tank having built-in coil pipe with thermal stratification function

Abstract

The invention discloses a vertical-type heat-storage water tank having a built-in coil pipe with a thermal stratification function. The vertical-type heat-storage water tank comprises a heat-storage water tank housing. An inner cavity of the heat-storage water tank is arranged in the heat-storage water tank housing. The inner cavity of the heat-storage water tank comprises a high-temperature-areacavity, a skew-temperature-area cavity and a low-temperature-area cavity, all of which are orderly distributed from the top to the bottom and communicate with each other. The transverse middle position of the inner cavity of the heat-storage water tank is equipped with a heat-exchange coil pipe which are vertically distributed from the top to the bottom. At least one cylindrical stratified sleevecovers outside the heat-exchange coil pipe. Flow-diverting holes are arranged in the stratified sleeve. Center positions of the top and the bottom of the heat-storage water tank housing are respectively equipped with a second external heat source inlet and a second external heat source outlet. The vertical-type heat-storage water tank having the built-in coil pipe is endowed with the thermal stratification function. According to the need of a user, high-temperature water and low-temperature water can be reliably provided, which is conducive to increasing utilization rate of solar energy and low-taste energy.

Description

technical field [0001] The invention relates to the technical field of heat storage tanks, in particular to a vertical temperature stratified heat storage tank with built-in coils. Background technique [0002] At present, with the widespread use of solar energy and the rapid development of low-grade energy hot water systems, the demand for related technologies such as solar water heating systems and air source heat pump water heating systems has increased. It is characterized by limitations such as instability and environmental conditions, so the heat storage device used to store heat energy has become an indispensable component. [0003] However, most of the existing heat storage tanks are hybrid heat storage tanks, the water supply and return pipes are mostly fixed, and the variation range of the water supply temperature is small. This type of water tank has no layering measures. After the high temperature water transfers heat to the low temperature water, , the water te...

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Problems solved by technology

[0003] However, most of the existing heat storage tanks are hybrid heat storage tanks, the water supply and return pipes are mostly fixed, and the variation range of the water supply temperature is small. This type of water tank has no layering measures. After the high temperature water transfers heat to the low temperature water, , the water temperature in the water tank is close to uniform, and this process is an irreversible process, which causes energy loss in the water tank, which leads to a decrease in the utilization rate of solar energy or low-grade energy

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