Solar boiler

Abstract

The present invention provides a solar boiler and a circulated thermal pipe, and relates to a solar collecting, conversion, heat transfer and heat exchanging device. The solar radiation is reflected and congregated to a heat absorption pipe arranged on a axial line of a reflector of single-curved surface by the reflector of single-curved surface, converted into heat energy after the absorption of sunshine by a coating layer, and the heat energy is delivered to a heat exchanger by a circulated thermal pipe, and the continuous working ranging from dozens of DEG C to 1,700 DEG C is achieved by the adoption of the working fluid of mutual solution. The circulated thermal pipe has automatic adjustment of the flow rate, rapid heat transferring of large power, large falling, long distance and small temperature differences, working of high temperature and low pressure, using of cold regions minus 40 DEG C and safe using. The present invention has lower failure rate by adopting a device intermittently and unified driving the reflector to track the solar device, stable and adjustable heating parameters by phase change thermal storage of paralleled connected small containers, multifunction and combined using of high, middle and low temperature, wide ranges of application, and can be used for the industrial heating of hydrogen production, power generation, refrigeration, freshwater production, pure water production, gas supplying, heat supplying, chemical and oil, etc.

Description

technical field [0001] The present application relates to a solar energy collection and conversion device, and claim 1 and claim 5 particularly relate to a solar boiler; claim 8 particularly relates to a circulating heat pipe. Background technique [0002] Solar boilers can be divided into three basic types: trough line focusing system, tower system and dish system. Among them, the trough system developed by Luz (LUZ) company in 1980, which was introduced on page 258 of "Solar Energy Utilization Technology" published by Chemical Industry Press in January 2005, is a typical trough-type line focusing system. The parabolic reflectors are assembled into a unit, and a computer controls several units to track the sun, so that it can accurately radiate the sunlight to the heat collecting steel pipe, heat the heat transfer fluid in the heat collecting steel pipe, and then use the circulating pump to transport it to the radiator. heat device. The capacity of this system can be larg...

AI Technical Summary

Problems solved by technology

The capacity of this system can be large or small, it can work at medium and low temperatures, and the mirrors can be tracked synchronously. The control cost is low, but the heat capacity of the heat transfer fluid is large, and the heat loss is large; Hot, difficult to achieve high temperature work

Another trough system, such as a solar boiler composed of an asymmetric cylindrical reflector and a gravity-separated heat pipe, such as the Chinese patent application No. 92207201.9, has two focal points on the same plane but different straight lines. Composed of throwing cylinders, the separated heat pipe is composed of evaporators, air ducts, condensers, and ducts connected end to end; its advantages and disadvantages are that this system is a fixed mirror, and the structure of the reflector is simple, but its daylighting time is short; The evaporator and condenser can be separated by several meters to tens of meters by adopting gravity separation heat pipe, but the condenser must be higher than the evaporator, and the installation is limited by the terrain; the diversion pipe responsible for the liquid return is several meters to tens of meters If the internal diameter is small, or the condensate solidifies due to low atmospheric temperature, it will cause the flow resistance of the condensate to be large or even block the tube, resulting in delayed or non-returning liquid, which will cause the evaporator to dry, that is, its gravity The separate heat pipe may not have the function of self-adjustment of the flow rate; the condenser is placed in the air bag, which can store heat in liquid-gas phase change, but the air bag is a pressure vessel

It claims to have thermal diode performance, but it does not specify any thermal insulation measures. We have reason to suspect that its system has large heat loss and no thermal diode effect, so it cannot be used in cold regions; the working fluid in its air bag is water, Therefore, the boiler cannot work at high temperature, and cannot be combined with high, medium and low temperature.

The Chinese patent with the application number 200410068864.3 discloses a split solar water heater. Its heat transfer system is composed of two heat exchangers connected with an upward liquid pipe, a downward steam pipe and an electric pump. Circulation amount, that is, the load of the electric pump is reduced; however, due to the intermittent and random nature of the sun, the circulating working fluid is intermittent and random, that is, the evaporation of the working fluid is sometimes large or small, and because the electric pump has no Flow self-regulation function, so the electric pump sometimes runs dry or the supply of condensate is insufficient

The Chinese patent application number 98120632.8 discloses an automatic tracking directional reflection solar boiler, which uses many reflectors and each mirror is equipped with a set of tracking devices, automatically tracks and orients the solar radiation to one or Several panel heat collecting evaporators and panel heat collecting steam superheaters, the heat collecting screens are connected to the steam drum; the advantage is that the power of the boiler can be large or small, but each mirror is equipped with a set of worm gear tracking device, worm gear tracking The device is more complicated, and the number of tracking devices is large, so the cost of the boiler is relatively high; it uses a steam drum to collect gas and store heat, because the diameter of the steam drum is larger, and the pressure resistance is not as good as the gas collecting pipe; the water storage capacity of the steam drum is larger, that is, the heat capacity Larger, since the solar boiler cannot work continuously for 24 hours, there will be a certain heat loss at night

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