This study concerned with a hot gas defrosting method for the removal of frost which formed on the evaporator operating at sub-zero temperatures in an air source heat pump, the performance of unit degrades. Thus alternative defrosting methods are being studied. This paper presents a literaturereview of the available defrosting methods. The review includes an ongoing efforts by various researchers to develop and design a hot gas defrosting system (HGBS) for an air source heat pump.
Shrikant Kathwate, Sachin Kardile, Mohnesh Mandhre. Review on hot gas defrosting system for an air source heat pump. International Journal of Academic Research and Development, Volume 3, Issue 2S, 2018, Pages 141-143