Theoretical analysis of the thermal performance of all-glass evacuated tube solar collectors with absorber coating on the outside or inside of the inner tube

Estrada, Claudio A.; Álvarez-García, G. del Socorro; Cabanillas, R.E.; Nair, P. K.

doi:10.1016/0960-1481(92)90084-g

Cited by 18 publications

(6 citation statements)

References 9 publications

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“…The solar absorptance of a PbS-CuS film is about 0.87 and thermal emittance is less than 0.46 (corresponding to sheet resistance of the annealed film of about 32 ᮀ [79]. As per theoretical prediction [11], such a coating can offer conversion efficiency of about 50% at an f-value of 0.1°C m W\. This value is not very attractive compared to what may be offered by coatings produced by vacuum techniques [80].…”

Section: Chemically Deposited Semiconductor Thin Films For Solar Enermentioning

confidence: 75%

“…The efficiency of such coatings has been analyzed in a theoretical model [11]. It was apparent that the absorber coating must be located on the outside of the inner glass tube.…”

Section: Chemically Deposited Semiconductor Thin Films For Solar Enermentioning

confidence: 99%

“…In the late 1970s and early 1980s the motivation in the work on chemically deposited thin films has been their prospective solar energy applications. One of the earlier developments toward this was in solar absorber coatings [10], followed by specific application of such coatings in evacuated all-glass tubular collectors [11]. Application of the chemically deposited films in solar control coatings was suggested in 1989 [12].…”

Section: Introductionmentioning

confidence: 99%

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98/03942 Semiconductor thin films by chemical bath deposition for solar energy related applications

1998

Fuel and Energy Abstracts

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In this paper we present the basic concepts underlying the chemical bath deposition technique and the recipes developed in our laboratory during the past ten years for the deposition of good-quality thin films of CdS, CdSe, ZnS, ZnSe, PbS, SnS, Bi S , Bi Se , Sb S , CuS, CuSe, etc. Typical growth curves, and optical and electrical properties of these films are presented. The effect of annealing the films in air on their structure and composition and on the electrical properties is notable: CdS and ZnS films become conductive through a partial conversion to oxide phase; CdSe becomes photosensitive, SnS converts to SnO , etc. The use of precipitates formed during deposition for screen printing and sintering, in polymer composites and as a source for vapor-phase deposition is presented. Some examples of the application of the films in solar energy related work are presented.1998 Elsevier Science B.V. All rights reserved.

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Section: Chemically Deposited Semiconductor Thin Films For Solar Enermentioning

confidence: 75%

“…The efficiency of such coatings has been analyzed in a theoretical model [11]. It was apparent that the absorber coating must be located on the outside of the inner glass tube.…”

Section: Chemically Deposited Semiconductor Thin Films For Solar Enermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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98/03942 Semiconductor thin films by chemical bath deposition for solar energy related applications

1998

Fuel and Energy Abstracts

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“…The thermal performance of all-glass evacuated tube collectors with absorber coating on the outside and inside of the inner tube was studied by Estrada-Gasca et al . [ 14 ]. Their mathematical model determined that applying the absorber film on the external surface of the inner tube is the better design.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Yin and Harding [13] showed that for a wide range of operating conditions, efficient heat output of all-glass evacuated tube collector with a copper manifold can be maintained by the thermosyphon effect. The thermal performance of all-glass evacuated tube collectors with absorber coating on the outside and inside of the inner tube was studied by Estrada-Gasca et al [14]. Their mathematical model determined that applying the absorber film on the external surface of the inner tube is the better design.…”

Section: Water-in-glass Evacuated Tube Designmentioning

confidence: 99%

Experimental study of evacuated-tube solar water heaters in Hong Kong

Chow

Chan

Fong

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part A:

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The evacuated tube solar water heaters are widely in use today. But so far their thermal performance has not been systematically evaluated, despite the increased popularity. An experimental solar hot water system including two collector types, namely water-in-glass and heat-pipe, of evacuated tube solar water heater has been set up. Their capacity is typical for serving single family domestic hot water system. Performance tests were carried out in Hong Kong and under almost identical boundary conditions by placing the two collectors side-by-side. The energy performance has been analysed and the daily efficiency, transient efficiency and night-time heat loss were compared. While the energy acquisition performance of the heat-pipe collector design is found slightly better, the heat loss performance is found weaker than the water-in-glass collector design.

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Parametric study of a concentric coaxial glass tube solar air collector: a theoretical approach

Дабра

Yadav

2017

Heat Mass Transfer

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Theoretical analysis of the thermal performance of all-glass evacuated tube solar collectors with absorber coating on the outside or inside of the inner tube

Cited by 18 publications

References 9 publications

98/03942 Semiconductor thin films by chemical bath deposition for solar energy related applications

98/03942 Semiconductor thin films by chemical bath deposition for solar energy related applications

Experimental study of evacuated-tube solar water heaters in Hong Kong

Parametric study of a concentric coaxial glass tube solar air collector: a theoretical approach

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