Moss, Roger W., Shire, G. S. F., Henshall, Paul, Eames, P. C., Farid, Arya and Hyde, T. (2017) Data for Optimal passage size for solar collector microchannel and tube-on-plate absorbers. [Dataset]

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Abstract

Solar thermal collectors for buildings use a heat transfer fluid passing through heat exchange channels in the absorber. Flat plate absorbers may pass the fluid through a tube bonded to a thermally conducting plate or achieve lower thermal resistance and pressure drop by using a flooded panel or microchannel design. The pressure drop should be low to minimise power input to the circulating pump. A method is presented for choosing the optimum channel hydraulic diameter subject to geometric similarity and pumping power constraints; this is an important preliminary design choice for any solar collector designer. The choice of pumping power is also illustrated in terms of relative energy source costs. Both microchannel and serpentine tube systems have an optimum passage diameter, albeit for different reasons. Double-pass and flooded panel designs are considered as special microchannel cases. To maintain efficiency, the pumping power per unit area must rise as the passage length increases. Beyond the optimum pumping power the rise in operating cost outweighs the increase in collector efficiency.

Item Type:	Dataset
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Science > Engineering
Type of Data:	Matlab code, figure and data files for solar energy paper
Library of Congress Subject Headings (LCSH):	Solar collectors -- Design and construction, Pumping machinery, Heat -- Transmission
Publisher:	School of Engineering, University of Warwick
Official Date:	22 June 2017
Dates:	Date Event 2 June 2017 Created 22 June 2017 Published
Status:	Not Peer Reviewed
Copyright Holders:	University of Warwick
Description:	This code runs in Matlab r2017a.Typically a script file will either produce a single figure or is designed to be run in sections, producing one graph after another. The function files are almost always called by script files
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID EP/K009915/1 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266 EP/K010107/1 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266 EP/K009230/1 [EPSRC] Engineering and Physical Sciences Research Council http://dx.doi.org/10.13039/501100000266
Related URLs:	Related item in WRAP
Contributors:	Contribution Name Contributor ID Depositor Moss, Roger 58697

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