CN101906287B - Light-heat transformation working medium composition - Google Patents

Abstract

The invention relates to a light-heat transformation working medium composition, which is black liquid and comprises a water-based liquid material and an oil-water emulsified or oil-based composition. A water-based or emulsified light-heat transformation working medium composition used at the low temperature of between 35 DEG C below zero and 110 DEG C consists of a black heat-absorbing material, an organic alcohol storing and conducting material, a preservative, a tackifier and water or consists of the black heat-absorbing material, a lithium bromide storing and conducting material, the preservative, the tackifier and the water. An oil-based liquid light-heat transformation working medium composition used at the intermediate temperate of between 40 DEG C below zero and 400 DEG C consists of the black heat-absorbing material and a storing and conducting material, wherein the storing and conducting material is a mixture of naphthenic hydrocarbon, aromatic hydrocarbon, biphenylene oxide, phenyltolylmethane, heavy alkylbenzene, diphenyl methyl ethane or synthetic alkane. The composition of the invention has the characteristics of high absorption rate, low emissivity, high performance, scaling resistance, corrosion resistance, wide applicability in solar energy collection engineering, simple preparation process and convenient popularization.

Description

A kind of light-heat transformation working medium composition

Technical field

The invention belongs to technical field of solar utilization technique, relate to a kind of solar heat collector light-heat transformation working medium composition.

Background technology

Conventional solar boilers and hot water engineering adopt the black coating by sunlight heating, vacuum pipe or metal tube substantially, and then after heating tube wall by water or dielectric heating, thermal absorption efficiency is greatly about 80% left and right, heat collector is made and material is limited to larger.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of light-heat transformation working medium composition, by traditional, then conduct method to medium become by direct irradiation of sunlight to light-heat transformation working medium from light heating tube wall, and solar energy is converted into heat energy.

A kind of light-heat transformation working medium composition of the present invention, is black liquor, includes water fluid material, oil-water emulsion type or oil-based composition.

A kind of oil-water emulsion type light-heat transformation working medium composition of ℃ use in low temperature-35～110, be calculated in mass percent, by the water of black absorbing material 0.5-5%, Organic Alcohol storage material 35-55%, sanitas 0.5-1%, tackifier 0.5-1% and surplus, formed.

A water base light-heat transformation working medium composition for low temperature-35～110 ℃ use, is calculated in mass percent, and the water of black absorbing material 0.5-5%, lithiumbromide storage material 40-55%, sanitas 0.5-1%, tackifier 0.5-1% and surplus, consists of.

Wherein black absorbing material can adopt the ultra-fine carbon black of high blackness or the carbon element pigment of PH6-8, and Organic Alcohol storage material is ethylene glycol, glycerol or methyl alcohol etc., and sanitas is nano zine oxide, silver suboxide or titanium oxide etc.Lithiumbromide is superconducting material, and gasification in the time of 35 ℃ has the characteristic of conduction at a high speed, liquid phase specific absorption 95%, and emittance < 5%.

A kind of oil base light-heat transformation working medium composition using in middle temperature (40～400 ℃), be calculated in mass percent, by black absorbing material 0.5～5% and storage material 95～99.5%, formed, described storage material is naphthenic hydrocarbon, the mixture of aromatic hydrocarbons, Biphenyl Ether, benzyl toluene, heavy alkyl benzene, diphenyl-methyl alkane or synthesizing alkanes.

Wherein said black absorbing material can adopt the ultra-fine carbon black of high blackness or the carbon element pigment of PH6-8.

The principle of work of the composition of light-heat transformation working medium of the present invention, is to be converted into heat energy after the luminous energy that sees through the sunlight of heat collector is absorbed, and by thermal cycling or mandatory thermal cycling, heat is passed to energy storage system by interchanger.

Feature of the present invention, high-absorbility, low-launch-rate, low temperature resistant or high temperature resistant, excellent property, non-scaling, corrosion-resistant, can be widely used in solar energy heat collection engineering, manufacture craft is simple, stable performance, the life-span is long, is convenient to promote.

Embodiment

Below in conjunction with embodiment, the present invention is described, but does not limit the present invention.Each percentage ratio all refers to mass percent.

Embodiment 1:

PH6-8,1500 order carbon blacks 3%, ethylene glycol 40%, water 56%, nano phase ag_2 o 0.5%, xanthan gum 0.5%.Heatproof-35--100 ℃, specific absorption is 95%, emittance < 5%.

Embodiment 2:

100 nano carbon blacks 3%, lithiumbromide 45%, water 50.5%, xanthan gum 1%, nano zine oxide 0.2%, nano titanium oxide 0.3%.Heatproof-40-110 ℃, specific absorption is 95%, emittance < 5%.

Embodiment 3:

100 nano carbon powder 5%, lithiumbromide 55%, xanthan gum 0.5%, nano zine oxide 1%, water 38.5%.Heatproof-40-110 ℃, specific absorption is 95%, emittance < 5%, can be for 300 ℃ of above uses.

Embodiment 4:

PH6-8,1500 order carbon blacks 1%, glycerol 50%, water 47%, nano phase ag_2 o 1%, xanthan gum 1%.Heatproof-35--+100 ℃, specific absorption is 95%, emittance < 5%.

Embodiment 5:

100 nano carbon powder 2%, Biphenyl Ether and phenylate mixture 98%.Heatproof-40～390 ℃, specific absorption is 95%,, emittance < 5%, can be for 300 ℃ of above uses.

Claims (2)

1. a light-heat transformation working medium composition, it is characterized in that being calculated in mass percent, water by black absorbing material 0.5-5%, Organic Alcohol storage material 35-55%, sanitas 0.5-1%, tackifier 0.5-1% and surplus forms, described black absorbing material adopts the ultra-fine carbon black of high blackness or the carbon element pigment of pH6-8, Organic Alcohol storage material is ethylene glycol, glycerol or methyl alcohol, and sanitas is nano zine oxide, silver suboxide or titanium oxide.

2. a light-heat transformation working medium composition, it is characterized in that being calculated in mass percent, water by black absorbing material 0.5-5%, lithiumbromide storage material 40-55%, sanitas 0.5-1%, tackifier 0.5-1% and surplus forms, described black absorbing material adopts the ultra-fine carbon black of high blackness or the carbon element pigment of pH6-8, sanitas is nano zine oxide, silver suboxide or titanium oxide, and tackifier adopt xanthan gum.