Author Identifier

Abdellah Shafieian (Dastjerdi)
ORCID: 0000-0002-3012-8887

Document Type

Journal Article

Publication Title

Case Studies in Thermal Engineering




School of Engineering




Edith Cowan University - Open Access Support Scheme 2020


Shafieian, A., & Khiadani, M. (2020). Integration of heat pipe solar water heating systems with different residential households: An energy, environmental, and economic evaluation. Case Studies in Thermal Engineering, 21, Article 100662.


This study presents a detailed methodology for evaluating the energy, environmental, and economic contributions of heat pipe solar water heating (HPSWH) systems in various households. The hot water consumption patterns of Perth residents in Australia in one, two, and four-occupant houses are extracted in hourly basis throughout a year. The annual performance of the system is evaluated based on parameters such as saved energy, solar fraction, avoided CO2 emission, saved money, and payback period. Moreover, an experimental rig is designed, manufactured, and tested. The results show that the contribution of the solar system in meeting the hot water demand is around 99% in summer, while this contribution drops to 36–51% in winter. Almost 387–1146.8 kg of CO2 emissions can be avoided annually in Perth if HPSWH systems are integrated with the conventional heating systems. In addition, it is shown that the HPSWH system has its most economic justification in households with higher number of occupants. Moreover, the payback period is much lower for houses with conventional electric water heating systems compared to houses with LPG systems.



Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.