Tawus Mamedova¹ , Arslan Bayramov¹ , Kadyr Gurdov¹ , and Muhammetmyrat Gylychmyradov²

¹ State Energy Institute of Turkmenistan, 62, Bayramhan Street, Mary, 745400, Turkmenistan

² Institute of Engineering, Technical and Transport Communications of Turkmenistan, 51, Senagat str., Ashgabat, 744400, Turkmenistan

Abstract

This research paper explores the feasibility of utilizing heat from sewage effluent to heat the drying room in student hostel No. 2 of the State Energy Institute of Turkmenistan. Temperature measurements revealed that sewage water typically ranges around 29.5 °C. While initial measurements indicated that drainage from the washing machine, reaching 36.5 °C, held limited potential for space heating due to low overall thermal capacity, the authors investigated the possibility of reusing this thermal energy. The study found that preheating water in a heat exchanger using the washing machine discharge (36.5 °C) resulted in a reduction of 0.065 kWh of electrical energy consumption over a 60-minute operation.