An experimental comparison of two heat exchangers used in wastewater source heat pump: A novel dry-expansion shell-and-tube evaporator versus a conventional immersed evaporator

▸ A shell-and-tube evaporator (DESTE) with defouling function was developed. ▸ The performance of DESTE was compared with the immersed evaporator (IE). ▸ The DESTE-WWSHP had a much better heat transfer performance than the IE-WWSHP. ▸ The DESTE could lead to considerable savings in room space and materials. ▸ This DESTE-WWSHP could reduce cost, and can also decrease odor nuisance.