Vapor-liquid circulation container-in-container solar water heater

Abstract

The invention discloses a vapor-liquid circulation container-in-container solar water heater. The vapor-liquid circulation container-in-container solar water heater is composed of a heat collector, aheat storage water tank and a heat exchanger, wherein the heat exchanger is a container type heat exchanger, and is arranged in the heat storage water tank and connected with the heat collector through a circulation pipeline to form a heat collection circulation loop, the vapor-liquid circulation container-in-container solar water heater is characterized in that a heat collection circulation system is a vacuum negative pressure system, an expansion space for boiling or back discharging of heat transfer media of the heat collector is reserved in the container type heat exchanger, the expansionspace is equal to or smaller than the back discharging amount of the heat collector, an exhaust device is arranged at the top of the container type heat exchanger, an upper circulating pipe and a lower circulating pipe are both connected to the bottom of the container type heat exchanger, a thermostatic valve is arranged on a circulating pipeline, the liquid level of the heat collection circulation system is in the container type heat exchanger, and liquid communication of the heat collection circulation loop is kept. According to the vapor-liquid circulation container-in-container solar waterheater, the container-in-container solar water heater with better heat exchange performance is provided.

Description

technical field [0001] The invention relates to a natural circulation solar water heater, in particular to an indirect self-heating circulation solar water heater which adopts a tank-in-tank heat exchange tank. Background technique [0002] The existing tank-in-tank self-heating cycle solar water heater adopts temperature difference convection heat transfer. Expansion space for thermal expansion of heat transfer medium. Originally, the heat exchange liner has a very small heat exchange area. The top is cut off by the air in the expansion space, and the temperature at the bottom is low. It mainly relies on the heat transfer in the middle and upper parts, and the heat exchange performance is poor. Compared with the jacketed heat exchange water tank, the indirect self-heating cycle solar water heater has poor heat exchange performance and has not been well promoted. Contents of the invention [0003] The object of the present invention is to provide a gallbladder solar wate...

AI Technical Summary

Problems solved by technology

The original heat transfer area is very small. The top is cut off by the air in the expansion space, and the bottom temperature is low. It mainly relies on the middle and upper parts for heat transfer, and the heat transfer performance is poor.

Compared with the jacketed heat exchange water tank, the indirect self-heating cycle solar water heater has poor heat exchange performance and has not been well promoted.

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