Effect of cooling water flow rate on power generation of organic Rankine cycle system - Details

Author：

Indexed by：

EI PKU CSCD

Abstract：

A　single　screw　expander　was　used　as　the　power　generation　machine.　The　effect　of　cooling　water　flow　rate　on　the　performance　of　the　ORC　system　and　the　single　screw　expander　is　studied　to　generate　power　from　low-grade　waste　heat.　The　results　show　that　when　the　cooling　water　flow　rate　from　8　m3·h-1　to　19　m3·h-1,　the　output　power　and　shaft　efficiency　of　the　single　screw　expander　increase　by　19.5　%　and　13%　from　4.31　kW　and　36.38%　to　5.15　kW　and　41.1%,　respectively.　In　this　experimental　system,　when　the　cooling　water　flow　is　12　m3·h-1　and　the　power　consumed　by　the　circulation　pump,　the　lubricating　oil　pump,　the　water　pump　and　the　cooling　tower　fan　were　all　taken　into　account,　the　maximum　value　of　the　system　net　output　power　and　the　system　net　efficiency　would　be　2.44　kW　and　2.47　%　respectively.　Therefore,　the　cooling　water　flow　rate　significantly　affected　the　performance　of　an　ORC　system　with　low-grade　waste　heat,　which　could　serve　as　important　reference　for　designing　cooling　source　system　and　optimizing　ORC　system　performance.　©　2018,　Science　Press.　All　right　reserved.

Keyword：

Pumps Cooling water Screws Rankine cycle Waste heat Enthalpy Hydraulics Cooling Flow rate Flow of water Cooling towers Efficiency

Author Community：

[ 1 ] [Wu, Yuting]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Zhao, Yingkun]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Lei, Biao]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Meng, Qingpeng]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Chen, Rumeng]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Zhi, Ruiping]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Ma, Chongfang]MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address：

吴玉庭
[wu, yuting]moe key laboratory of enhanced heat transfer and energy conservation, beijing key laboratory of heat transfer and energy conversion, college of environmental and energy engineering, beijing university of technology, beijing; 100124, china

Email：

wuyuting@bjut.edu.cn

Show more details

Related Keywords：