Experimental performance evaluation of a novel heat exchanger for a solar hot water storage system

Jayanta Deb Mondol, Mervyn Smyth, Aggelos Zacharopoulos and Trevor Hyde

Applied Energy, 2009, vol. 86, issue 9, 1492-1505

Abstract: The performance of a novel heat exchanger unit ([`]Solasyphon') developed for a solar hot water storage system was experimentally investigated. The [`]Solasyphon' is a simple [`]bolt-on' heat exchange unit that can be integrated externally to a traditional single-coil hot water cylinder (HWC) avoiding the costly replacement of an existing HWC with a twin-coil HWC. The installation cost of a [`]Solasyphon' is lower compared to a traditional HWC thus offers greater cost effectiveness. A data acquisition system was designed to compare the thermal performance of an integrated [`]Solasyphon' HWC with a traditional twin-coil HWC under controlled simulated conditions. The analysis was based on experimental data collected under various operating conditions including different primary supply temperatures (solar simulated); primary supply patterns and draw off patterns. The results indicated that the [`]Solasyphon' delivered solar heated water directly to the top of the HWC producing a stratified supply at a useable temperature. Under variable solar conditions the [`]Solasyphon' would transfer the heat gained by a solar collector to a HWC more efficiently and quickly than a traditional HWC. The [`]Solasyphon' system can reduce installation costs by 10-40% and has a lower embodied energy content due to less material replacement.

Keywords: Solar; hot; water; Heat; exchanger; Solar; thermal; Solar; energy; Solar; collector (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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