Critical Review of Hybrid Power Cycles Part 1:Using Multiple Direct Heat Sources of Different Temperatures
Most power generation systems use one source of heat,say fossil fuel,nuclear,solar,or geothermal,at one temperature,and also use that heat source directly as thermal energy.In cases where the cost of the heat is related to the temperature,such as with solar collectors,or when the temperature of the heat source is limited by operational considerations,such as in nuclear reactors,or when the available temperature is well below technological limitations of the plant,such as in geothermal energy use,or when waste heat at appropriate temperatures and price is available,such as in compounded internal combustion engines,it was found that gains in efficiency and reductions of emissions and cost could be achieved by using multiple heat sources of different temperatures.This paper reviews the configurations and status of multi-temperature thermal hybrid systems,some of which include renewable or nuclear energy inputs,and promising direction to the future.Most of the hybrid multi-temperature systems using multiple temperature heat inputs are reported to have a higher efficiency than those using only one heat source and temperature.It is noted that most of the studies so far are based on simulations and more experimental work and data are needed for proper feasibility analysis and validation.Another way to hybridize power plants is by using some or all of the added thermal energy to produce a fuel,which is then burned for heat,and in some cases thus raising the power plants efficiency and/or reducing emissions,especially of CO2.The latter is called thermochemical energy conversion,and is reviewed in Part 2 of this paper.
Hybrid Power Cycle Multiple Heat Sources Solar Power Geothermal Power Biomass Power
Ting Yue Noam Lior Na Zhang
University of Pennsylvania,Department of Mechanical Engineering and Applied Mechanics,Philadelphia P Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,P.R.China
国际会议
桂林
英文
1-22
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）