Experimental performance evaluation of a novel heat exchanger for a solar hot water storage system |
| |
Authors: | Jayanta Deb Mondol Mervyn SmythAggelos Zacharopoulos Trevor Hyde |
| |
Affiliation: | Centre for Sustainable Technologies, School of the Built Environment, University of Ulster, Jordanstown, Newtownabbey, Northern Ireland BT370QB, United Kingdom |
| |
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 |
本文献已被 ScienceDirect 等数据库收录! |