Title :
The development of the storage tank water heater by thermoelectric technology
Author :
Harata, Iko ; Takagi, Sakae ; Wakabayashi, Isao ; Sakai, Motohiro ; Tetuka, Hirofusa ; Toshou, Tuyoshi
Author_Institution :
Tohoku Electr. Power Co., Sendai, Japan
Abstract :
The reduction in energy consumed by the storage tank water heater through conventional resistance heating had a limit. Therefore, we used thermoelectric technology. The thermoelectric technology which changes electric energy into the heat energy is commonly used as a heat pump. In this thermoelectric technology, we used a heat pump which utilizes the latent heat of the atmosphere. The other characteristic was to collect the heat which occurs from the power supply equipment of the thermoelectric technology device, in effect a CHP (combined heat and power) device. In this thermoelectric technology, an improvement of the energy efficiency can be expected. Initially we examined for a basis a bench scale model. As for the examination condition, the capacity of the tank was 3.7 liters, the temperature of hot water was 85°C, the environment temperature was 23°C and the efficiency of the power supply was 80%. On inspection of the results the new thermoelectric technology performed with a greater efficiency than the resistance heated storage tank heater. That is, with the thermoelectric technology storage tank water heaters about a 13% reduction in energy consumption was achieved. In 1998, the thermoelectric technology storage tank water heater was to be further developed on a full scale rig
Keywords :
Peltier effect; electric heating; energy conservation; heat pumps; latent heat; thermal energy storage; thermoelectric conversion; thermoelectric devices; 23 C; 80 percent; 85 C; PELTIER-1; Peltier heat pump; combined heat and power device; energy consumption reduction; energy efficiency improvement; environment temperature; heat energy; heat pump; hot water temperature; latent heat; power supply efficiency; power supply equipment; storage tank water heater; thermoelectric technology; Cogeneration; Electric resistance; Energy storage; Heat pumps; Power supplies; Resistance heating; Temperature; Thermoelectricity; Water heating; Water storage;
Conference_Titel :
Thermoelectrics, 1998. Proceedings ICT 98. XVII International Conference on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-4907-5
DOI :
10.1109/ICT.1998.740438