Options for solar-assisted refrigeration—Trough collectors and double-effect chillers

M.J. Tierney

Renewable Energy, 2007, vol. 32, issue 2, 183-199

Abstract: A system often discussed in the available literature is that of a single-effect lithium bromide chiller and a fixed solar collector. An analysis of published articles showed that prototype trough and evacuated flat plate collectors can efficiently produce liquids hot enough to drive double-effect chillers. Our goal was to assess the potential of new chiller–collector combinations to substantially reduce requirements for gas-firing. We simulated systems with a 230m2 collector, starting with the well-known combination of single-effect chiller and flat plate. For a scenario with a July day in Algiers, we found a “break-even” point at a daily average of 50kW refrigeration demand; here the gas consumption was no more favourable than that of a double-effect chiller. We simulated three more systems, with either single or double effects and either evacuated flat plate or trough collectors. Compared to double-effect chillers, potential savings were large: 39% for a combination of single-effect chiller and trough collector; 32% for double-effect chiller and flat-plate collector; 86% for double-effect chiller and trough collector. Even for locations as far north as Oslo large solar fractions of 67% were possible (double-effect chiller and trough collector).

Keywords: Solar-fraction; Refrigeration; Lithium bromide; Double-effect chiller; Trough collector (search for similar items in EconPapers)
Date: 2007
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (17)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:32:y:2007:i:2:p:183-199

DOI: 10.1016/j.renene.2006.01.018

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