variyenli, halil ibrahim gazi üniversitesi - teknoloji fakültesi - enerji sistemleri mühendisliği bölümü, Ankara, turkey , göktekin, koray gazi üniversitesi - fen bilimleri enstitüsü, Ankara, Turkey

The Conversion to Electric Energy of Waste Heat Enegy in Hermetic Gas Burning Devices

29485

In this study, to use waste heat of combi boilers thermoelectric generators mounted in flue part of the system and theoretical analysis of the system was done. The designed system will be used to generate electrical energy from waste heat in hermetic combi boilers. Calculations were done in boiler heating mode at outside air temperatures rage of -20 °C and +20 °C with 5 °C variations and heating water temperature is in range of 35-85 °C with 5 °C variations. In hot water heating mode, calculations were done in outside air temperatures range of -20 °C and +35 °C with 5 °C variations and heated water temperature is in range of 35-65 °C with 5 °C variations. In boiler heating mode, the lowest power value was calculated as 57,83 W at 20 °C outside air temperature and heater temperature of 35 °C, and the highest power value was calculated as 273,6 W at -20 °C outside air temperature and heater temperature of 85 °C. In hot water heating mode, the lowest power value was calculated as 31,19 W at at 35 °C outside air temperature and supplying hot water temperature of 35 °C, and the highest power value was calculated as 273,6 W at -20 °C outside air temperature and supplying hot water temperature of 65 °C. By decreasing outside air temperature, depending on the increase in temperature of the heater and supplying hot water, it has been observed that the amount of obtained power increased by increasing the flue gas temperature.

821

Hermetic combi boilers , waste heat , electrical energy , generate

Journal Of Polytechnic

830