CN201706724U

CN201706724U - Special vacuum tube heat collector for solar ammonia thermoelectric conversion system

Info

Publication number: CN201706724U
Application number: CN2010202925127U
Authority: CN
Inventors: 赵丛宝; 郝世超; 钱万亿; 李光祖
Original assignee: Shanghai Shenghe New Energy Resources Science & Technology Co Ltd
Current assignee: Shanghai Shenghe New Energy Resources Science & Technology Co Ltd
Priority date: 2010-08-16
Filing date: 2010-08-16
Publication date: 2011-01-12
Anticipated expiration: 2020-08-16

Abstract

The utility model relates to a special vacuum tube heat collector for a solar ammonia thermoelectric conversion system, which is characterized by comprising at least one vacuum tube, wherein the vacuum tube is fixed by an external supporting structure, and the wall of the vacuum tube is coated with a selective absorbing coating; at least one horizontally or vertically placed fin is arranged in the vacuum tube, and a U-shaped tube without a intermediate heat transfer medium penetrates through the fin and is arranged in the vacuum tube; the U-shaped tube is made of a material containing no copper, and the two ends of the U-shaped tube are arranged outside the vacuum tube; and when at least two vacuum tubes exist, the end parts of the two adjacent U-shaped tubes are mutually connected. The utility model has the advantages of high heat collecting efficiency (eta is more than or equal to 95%), mature technology, low cost and wide range of application, and is especially suitable for use in solar-resource-rich regions.

Description

Vacuum tube collector special for solar ammonia water thermoelectric conversion system

Technical field

The utility model relates to a kind of vacuum tube collector special for solar ammonia water thermoelectric conversion system, belongs to solar energy optical-thermal device technique field.

Background technology

Solar water heater is most widely used general, an industrialized development solar product the most rapidly during China solar energy utilizes.Closing-sunning type, flat and three developing stage of complete glass vacuum sun thermal-collecting tube formula have been experienced in the solar water heater development of China.

Closing-sunning type solar energy hot-water heat collector (mainly in the 70-80 age in 20th century): various forms is arranged, comprise that petrol drum formula, automotive oil are box, rubber pocket type etc.Characteristics such as the water-heater efficiency of this form is low, rapid heat dissipation, moisture storage capacity is little, can't use winter can't large tracts of land be promoted, and are not therefore greatly developed.Only market is arranged now, account for 1%～2% of whole shares in the good but comparatively poor area of western solar energy resources.

Flat solar water heater's (mainly in 80-90 age in 20th century): flat plat solar water heaters can not move winter, and night, heat dissipation capacity was bigger, withdraw from the market gradually, ground such as China's Delta of the Pearl River and Yunnan have the user to use at present, account for about 10% of whole market shares.

Complete glass vacuum sun thermal-collecting tube water heater (nineteen ninety so far): its core component is the complete glass vacuum sun thermal-collecting tube with coating for selective absorption, main feature is 1) coating of vacuum heat-insulation and low heat radiation, make vacuum heat collection pipe influenced by ambient temperature hardly, northern area all can use throughout the year; 2) cylindrical endotherm area plays the accurate tracer action of the sun, has improved whole day and has got heat; 3) envelope of melting of glass and glass makes bond strength height, firm, the long service life of structure.

At present the price of heat collector is comparatively expensive mostly and be that the thermal efficiency is comparatively low.

Summary of the invention

The purpose of this utility model provides a kind of cheap and vacuum tube collector that collecting efficiency is high.

In order to achieve the above object, the technical solution of the utility model has provided a kind of vacuum tube collector special for solar ammonia water thermoelectric conversion system, it is characterized in that, comprise at least one vacuum tube, vacuum tube is fixed by the supporting construction of outside, scribble coating for selective absorption on the tube wall in vacuum tube, the fin of a slice at least that in vacuum tube, is provided with level or vertically places, not having the U-shaped pipe of middle heat transfer medium to pass fin in the pipe is located in the vacuum tube, the U-shaped pipe is made by the material of cupric not, the two ends of U-shaped pipe are located at outside the vacuum tube, and when at least two vacuum tubes, the end of two adjacent U-shaped pipes interconnects.

The complete glass vacuum sun thermal-collecting tube water heater of Xiao Shouing is the instructions for use that the combination of several modes of introducing in the background technology reaches hot water in production, the life nothing more than in the market, rely on its core component---have the complete glass vacuum sun thermal-collecting tube of coating for selective absorption, by vacuum The Application of Technology between various up-to-date coating technologies, sleeve pipe, absorb photo-thermal to greatest extent from the sun; But, the transmission that can a large amount of heats that absorb from the sun very fast, be transported to working medium to be heated problem but few people pay close attention to, the utility model adopts the method for adding fin on common U type pipe to improve heat transfer efficiency; Meanwhile, hot water demand during conventional solar thermal collector all only limits to produce, live, the vacuum tube collector special for solar ammonia water thermoelectric conversion system that the utility model is mentioned is changed into ammoniacal liquor with heated working medium in the protosun energy heat collector by water, utilize solar thermal collector solar absorption to be converted into the heat energy of ammoniacal liquor, subsequently thermoelectric conversion device is overlapped in the heat energy input one of ammoniacal liquor, solar energy changes for electric energy the most at last, reduce the unnecessary link in the conventional power generation usage system, also realized the low temperature photo-thermal conversion power generation of solar energy simultaneously.

The utility model has increased the exchange heat area of U type pipe and external high temperature environment by increase the mode of fin on U type pipe, increases the heat that U type intraductal working medium absorbs, and the efficient ratio is not with the common U type Guan Yaogao of fin.The utility model has the advantages that: vacuum pipe solar ammoniacal liquor heat collector collecting efficiency height, η 〉=95%, technology maturation, cost is lower; Applied widely, particularly more practical in the abundant area of solar energy resources.

Description of drawings

A kind of vacuum tube collector special for solar ammonia water thermoelectric conversion system schematic diagram that Fig. 1 provides for the utility model;

Fig. 2 is the partial view of Fig. 1;

Fig. 3 is the sectional drawing of Fig. 2.

The specific embodiment

Specify the utility model below in conjunction with embodiment.

Embodiment

As shown in Figure 1 to Figure 3, the structural representation of a kind of vacuum tube collector special for solar ammonia water thermoelectric conversion system that provides for the utility model, vacuum tube ammoniacal liquor heat collector 1 comprises a plurality of vacuum tubes 8, supporting construction 11 by the outside is fixing, scribble coating for selective absorption on the tube wall in vacuum tube 8, its absorptivity α s 〉=95%, its conversion efficiency ε 〉=90%, in vacuum tube 8, be provided with level/vertical multi-disc fin of placing 9, and have U-shaped pipe 10 to pass fin 9 to be located in the vacuum tube, U type tube material is cupric not, the two ends of U-shaped pipe are located at outside the vacuum tube 8, the end of two adjacent U-shaped pipes 10 interconnects, and 12 vacuum tubes 8 just are arranged in series so as shown in Figure 1.Many vacuum pipe solar ammoniacal liquor heat collectors can adopt the mode of series and parallel as requested, realize a vacuum pipe solar ammoniacal liquor collector system efficiently, and are special-purpose for the thermoelectric conversion of solar ammonia water.

Claims

1. vacuum tube collector special for solar ammonia water thermoelectric conversion system, it is characterized in that, comprise at least one vacuum tube (8), vacuum tube (8) is fixing by outside supporting construction (11), scribble coating for selective absorption on the tube wall in vacuum tube (8), the fin of a slice at least (9) that in vacuum tube (8), is provided with level or vertically places, not having the U-shaped pipe (10) of middle heat transfer medium to pass fin (9) in the pipe is located in the vacuum tube (8), U-shaped pipe (10) is made by the material of cupric not, the two ends of U-shaped pipe (10) are located at outside the vacuum tube (8), when at least two vacuum tubes (8), the end of adjacent two U-shaped pipes (10) interconnects.