JPS5694156A - Process for making solar energy selective absorption film - Google Patents

Process for making solar energy selective absorption film

Info

Publication number
JPS5694156A
JPS5694156A JP17294579A JP17294579A JPS5694156A JP S5694156 A JPS5694156 A JP S5694156A JP 17294579 A JP17294579 A JP 17294579A JP 17294579 A JP17294579 A JP 17294579A JP S5694156 A JPS5694156 A JP S5694156A
Authority
JP
Japan
Prior art keywords
solar energy
aluminum
chemically converted
absorption film
selective absorption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17294579A
Other languages
Japanese (ja)
Other versions
JPS5755986B2 (en
Inventor
Hiroyuki Tokumasu
Hideo Uchino
Shiro Hozumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP17294579A priority Critical patent/JPS5694156A/en
Publication of JPS5694156A publication Critical patent/JPS5694156A/en
Publication of JPS5755986B2 publication Critical patent/JPS5755986B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
    • C23C22/66—Treatment of aluminium or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
    • F24S70/225—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption for spectrally selective absorption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
    • F24S70/25—Coatings made of metallic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Abstract

PURPOSE: To facilitate the manufacture of a chemically converted film having high absorption efficiency of solar energy and with a less loss of stored thermal energy.
CONSTITUTION: In this method, a chemically converted fifm is produced by immersing aluminum or its alloy in the water containing phosphate ions. At this time, a concentration of the phosphate ion is 200W1,000ppm, a value of pH of the water containing the phosphate ions is 9.5W11.0 and a water temperature is higher than 90°C. The chemically converted film is made in such a way that aluminum or its alloy is degreased, cleaned, polished chemically or with electrolytically to have a mirror finished surface, thereafter the aluminum is immersed in the water. As a post processing, simple cleaning and drying are applied.
COPYRIGHT: (C)1981,JPO&Japio
JP17294579A 1979-12-27 1979-12-27 Process for making solar energy selective absorption film Granted JPS5694156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17294579A JPS5694156A (en) 1979-12-27 1979-12-27 Process for making solar energy selective absorption film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17294579A JPS5694156A (en) 1979-12-27 1979-12-27 Process for making solar energy selective absorption film

Publications (2)

Publication Number Publication Date
JPS5694156A true JPS5694156A (en) 1981-07-30
JPS5755986B2 JPS5755986B2 (en) 1982-11-27

Family

ID=15951257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17294579A Granted JPS5694156A (en) 1979-12-27 1979-12-27 Process for making solar energy selective absorption film

Country Status (1)

Country Link
JP (1) JPS5694156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9276451B2 (en) 2011-07-13 2016-03-01 Daikin Industries, Ltd. Electrical motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9276451B2 (en) 2011-07-13 2016-03-01 Daikin Industries, Ltd. Electrical motor

Also Published As

Publication number Publication date
JPS5755986B2 (en) 1982-11-27

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