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| Power Generation Model and Numerical Simulation of Blast Furnace Slag Water Waste Heat Driven Semiconductor Thermoelectric |
| MENG Fan-kai1,2,3,CHEN Lin-gen1,2,3,SUN Feng-rui1,2,3,YANG Bo1,2,3 |
1. Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China
2. Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China
3. College of Power Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China |
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Abstract Against the low rate of low temperature waste heat recovery for China’s iron and steel industry, a semiconductor thermoelectric power generation technology-based technical solutions recycling blast furnace slag flushing water sensible heat was presented. The corresponding calculation model was established, and the relations among the key parameters such as slag washing water temperature, the length of the thermoelectric element, the packing factor of the thermoelectric module, heat exchanger flow passage length and the device performance were analyzed. The results shows that based on thermoelectric power generation technology and blast furnace slag flushing water at 100 ℃, water temperature drop is 1.5 ℃ per meter process, about 0.93 kW electrical energy can be produced per square meter heat transfer surface area, and thermal efficiency of about 2% can be achieved. The recovery period of the equipment cost is about 10 years.
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Received: 14 May 2013
Published: 20 February 2014
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2014, Vol. 49 
