Impact of Waste Heat Recovery of Chimney Using U-Shaped Pulsating Heat Pipe to Generate Hot Water- Experimental and Environmental Analysis

Abstract Many studies have been done on the Pulsating heat pipes (PHP) using energy applications system. In this study a heat exchanger PHP is analyzed. A heat pipe prototype is manufactured for waste heat recovery. The present study experimentally investigated the effect of pulsating heat pipe on the waste heat recovery of the chimney and produce hot water for household consumption. The evaporator is placed in a smoke exhaust duct and the condenser is located in a water chamber in which the smoke heat is transferred through. The results are presented for different heat pipe angles to the horizon from 0 to 90. The PHP is filled 60% by distilled water as operating fluid. The highest hot water temperature in outlet of reservoir was about to 58 oC. Also, The CO2 mitigation and CPH of the waste heat recovery system was equal to 84.82 tons and 0.1$/m3. Moreover, the efficiency is changing from 19% for a horizontal PHP to 54% for a vertical one.