Number：

04100001

Download

PDF

Name：

蘇宏明

Titles：

講師

Author：

蘇宏明

Paper name：

Parametric Study of Heat Transfer Design on the Thermoelectric Generator System for Engine Waste Heat Recovery

Name of activity：

2012 中華民國燃燒學會暨第22屆燃燒與能源學術研討會

Keywords：Heat absorber, Thermoelectric generator, Waste heat recovery

Abstract：This study combined the metallic pin-fin heat absorber thermoelectric generator to build a thermoelectric transfer system of high heat transfer performance for engine waste heat recovery. Experimental tests were utilized to investigate the effects of various parameters on the generating electricity, The relevant variable parameters were(1) the configuration of the heat absorber, (2) the inlet temperature of hot air (Ti=100~350⁰C),(3) the flow rate of hot air (FH=3~15 m³/hr) and (4) the flow rate of cooling air (FC=0~366 m³/hr). The configurations of the heat absorbers had three modes: without heat absorbers (Mode A) as well as the circular pin-fin heat absorbers with staggered (Mode B) and inline arrangements (Mode C), The results reveled that the higher Ti, the bigger FH and the bigger FC were desired for the higher generating electricity. For all tests heron, the system with Mode B heat absorber at Ti=350⁰C, FH=15 m³/hr and FC=366 m³/hrhad the maximum generating electricity of 15.87 Watt. Besides, the heat absorber had the great help in generating electricity. Furthermore, it is found that the enhancement of the heat absorber would be promoted as decreasing Ti and FH or increasing FC. Finally, for the present series connection system of 4 pieces thermoelectric generators. Finally, this work provided the empirical formula of the generating electricity(P) as a function of the temperature difference (Ti.s-To,s) bittern the hot and cold surfaces of the thermoelectric generator. The relationship between the Setback coefficient difference (SB-SA) and the mean temperature ((Ti.s+To,s)/2) od the thermoelectric generator was also proposed.

Back