Solar vacuum heat-collecting device with glass heat pipe working medium lifted by strip-shaped liquid absorbing core

Abstract

The invention relates to a solar vacuum heat-collecting device with a glass heat pipe working medium lifted by a strip-shaped liquid absorbing core. The solar vacuum heat-collecting device comprises an all-glass vacuum heat pipe heat-collecting component or a bending eccentric all-glass vacuum heat pipe heat-collecting component or an inner glass fin plate heat-collecting component, a heat-insulting water tank or a union box, a tail box, a bracket and accessories, wherein a glass heat pipe works by virtue of gravity. The solar vacuum heat-collecting device is characterized in that a strip-shaped capillary liquid absorbing core with the width of 2 to 10 mm is arranged in the heat end of the glass heat pipe; the strip-shaped capillary liquid absorbing core is adhered to the inner wall at the heat end of the heat pipe by a clamping spring; the length of the strip-shaped capillary liquid absorbing core is 10 to 50 percent of that of the heat end of the heat pipe; and the distance between the lower end of the strip-shaped capillary liquid absorbing core and the bottom end of the heat pipe is 0 to 200 mm. By adoption of the strip-shaped capillary liquid absorbing core, the effective heat absorbing area when the heat pipe starts is increased by 10 times on the premise of not increasing the working medium, and the internal pressure maintains low site during idle sunning. In winter, the starting process is shortened from more than 140 minutes to 10 to 30 minutes, and the heat-collecting time is increased by one hour every day.

Description

technical field [0001] The invention relates to a solar vacuum heat collecting device in which thin liquid-absorbing cores raise the working medium of glass heat pipes. Background technique [0002] The solar water heater made of heat pipe vacuum heat collecting tube has the advantages of high energy efficiency ratio without water in the tube, conforms to the sanitary drinking water standard, and can work as usual if a single tube is damaged. therefore. The solar vacuum water heater without water in the tube will likely occupy more and more market share. [0003] Existing a kind of workload fills seldom all-glass heat pipe vacuum heat collecting tube solar water heater, and heat pipe inner wall adopts light pipe structure, and heat pipe vacuum heat collecting tube is installed with an inclination of about 45 degrees. In the non-heat exchange state, it can be observed that there is accumulation of liquid working fluid at the bottom of the heat pipe. [0004] A comparative...

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