Full-glass dual-channel vacuum tube heat collector

Abstract

The invention discloses a full-glass dual-channel vacuum tube heat collector, which comprises an outer glass tube, a heat-absorbing glass tube, an isolating glass tube and an inner glass tube. The full-glass dual-channel vacuum tube heat collector is characterized in that: the tops of the outer glass tube, the heat-absorbing glass tube and the isolating glass tube are smelted and sealed on a glass flange at high temperature and a cavity among the outer glass tube, the heat-absorbing glass tube and the glass flange is vacuumized to form a vacuum cavity; an interlayer between the heat-absorbing glass tube and the isolating glass tube forms a heated channel and the interlayer between the isolating glass tube and the inner glass forms an insulating layer; the outer ring of the glass flange is provided with an outlet which is communicated with the heated channel and the middle of the glass flange is provided with an inlet which is communicated with an inflow channel. The full-glass dual-channel vacuum tube heat collector combines two operation modes of natural circulation and forced circulation, can be widely applied to the integration of building solar energy, can be applied to the solar energy power generation and has the advantages of novelty, simple operation, low fault and low cost.

Description

technical field [0001] The invention relates to solar energy utilization equipment, in particular to an all-glass double-channel vacuum tube heat collector used in solar water heating systems, solar air conditioners, and solar thermal power generation to convert solar energy into light and heat. Background technique [0002] In the solar thermal utilization system, how to efficiently collect sunlight and convert it into heat energy is an important technical key. The vacuum heat collector is a kind of heat collector suitable for solar heat utilization in medium and high temperature environments. It is mainly used in solar hot water, solar air conditioning, industrial heat applications, and solar power generation. At present, there are two main types of popular products: all-glass vacuum tube collectors and metal-glass structure vacuum collectors, among which: 1. All-glass vacuum tube collectors are composed of outer glass tubes, inner glass tubes, selective absorption coating...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned types of vacuum heat collecting tubes have a common shortcoming, namely: due to structural defects, when they form a split solar thermal application system, a forced circulation system is generally used (a split solar hot water system refers to a water storage tank and a collector. The system installed with a certain distance between the heat collectors, the forced circulation system refers to the system that uses the pump to force the heat transfer medium to circulate through the heat collector), which makes the operation of the split solar thermal application system depend on the electric control system and Water pump, once the electric control system or the water pump fails, the split solar thermal application system cannot operate. In addition, the all-glass vacuum collector with U-shaped tube inserted and the metal-glass structure vacuum collector use a large number of colored Metals, which directly caused the rise in investment costs

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