A Study on Waste Heat Recovery in Drain Water with Water-to-Water Heat Exchanger in Barbershops

Fang Tian Sun; Na Wang; Xiao Gang Gong; Yun Ze Fan; De Ying Li

doi:10.4028/www.scientific.net/AMR.608-609.1231

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 608-609A Study on Waste Heat Recovery in Drain Water with...

A Study on Waste Heat Recovery in Drain Water with Water-to-Water Heat Exchanger in Barbershops

Abstract:

Heat utilization efficiency of barbershop was about 16.7% in China, because the low-temperature waste water at 30～36°C was directly discharged into sewer. And match of energy grade was not appropriate, because electric water heaters were used to producing hot water at 55～70°C in most of barbershops. A waste heat recovery system with water-to-water heat exchanger (WHR-HE) was presented, according to heat utilization characteristics of barbershop and scientific principle of energy utilization. WHR-HE was analyzed by the first Law of thermodynamics and economics. The analyzed results show that energy consumption can be reduced about 75%, and incremental payback period is less one year for WHR-HE. There is optimal cold side temperature difference of water-to-water heat exchanger.

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Periodical:

Advanced Materials Research (Volumes 608-609)

Pages:

1231-1235

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.608-609.1231

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Online since:

December 2012

Authors:

Fang Tian Sun, Na Wang, Xiao Gang Gong, Yun Ze Fan, De Ying Li

Keywords:

Barbershop, Energy Saving, Heat Utilization Efficiency., Waste Heat Recovery

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