Experimental study of the influence of collector height on the steady state performance of a passive solar air heater

Dylan Ryan; Stas Burek

doi:10.1016/j.solener.2010.05.018

Experimental study of the influence of collector height on the steady state performance of a passive solar air heater

Dylan Ryan, Stas Burek

Research output: Contribution to journal › Article › peer-review

Abstract

Passive solar air heaters, such as solar chimneys and Trombe Walls, rely on solar-induced buoyancy-driven (natural) convection to produce the flow of air. Although buoyancy-driven convection is well understood for a single vertical plate, buoyancy-driven convection in an asymmetrically-heated channel is more problematic, and in particular, the effects of the channel height on the flow rate and heat transfer. This paper reports on experiments on test rigs resembling lightweight passive solar air-heating collectors. The test rigs were of heights 0.5, 1.0 and 2.0 m, with adjustable channel depths (20–150 mm) and heat inputs (up to 1000 W/m²).

Original language	English
Pages (from-to)	1676-1684
Number of pages	9
Journal	Solar Energy
Volume	84
Issue number	9
DOIs	https://doi.org/10.1016/j.solener.2010.05.018
Publication status	Published - 1 Sep 2010

Keywords

energy systems
renewable energy
solar energy

Documents and Links

10.1016/j.solener.2010.05.018

http://researchonline.gcu.ac.uk/bne/101

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title = "Experimental study of the influence of collector height on the steady state performance of a passive solar air heater",

abstract = "Passive solar air heaters, such as solar chimneys and Trombe Walls, rely on solar-induced buoyancy-driven (natural) convection to produce the flow of air. Although buoyancy-driven convection is well understood for a single vertical plate, buoyancy-driven convection in an asymmetrically-heated channel is more problematic, and in particular, the effects of the channel height on the flow rate and heat transfer. This paper reports on experiments on test rigs resembling lightweight passive solar air-heating collectors. The test rigs were of heights 0.5, 1.0 and 2.0 m, with adjustable channel depths (20–150 mm) and heat inputs (up to 1000 W/m2).",

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AU - Burek, Stas

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AB - Passive solar air heaters, such as solar chimneys and Trombe Walls, rely on solar-induced buoyancy-driven (natural) convection to produce the flow of air. Although buoyancy-driven convection is well understood for a single vertical plate, buoyancy-driven convection in an asymmetrically-heated channel is more problematic, and in particular, the effects of the channel height on the flow rate and heat transfer. This paper reports on experiments on test rigs resembling lightweight passive solar air-heating collectors. The test rigs were of heights 0.5, 1.0 and 2.0 m, with adjustable channel depths (20–150 mm) and heat inputs (up to 1000 W/m2).

KW - energy systems

KW - renewable energy

KW - solar energy

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JF - Solar Energy

SN - 0038-092X

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