Research of air powered engine system using two-stage single screw expander - Details

Author：

He, Wei (He, Wei.) | Wu, Yuting (Wu, Yuting.) (Scholars：吴玉庭) | Ma, Chongfang (Ma, Chongfang.) | Ma, Guoyuan (Ma, Guoyuan.) (Scholars：马国远)

Indexed by：

EI Scopus PKU CSCD

Abstract：

A　new　compressed　air　engine　system　based　on　two-stage　single　screw　expander　is　proposed　to　increase　the　energy　utilization　rate　of　compressed　air.　The　distribution　of　expansion　ratios　between　stages　is　optimized　by　building　mathematical　optimal　arithmetic　model　with　variable　metric　method　and　is　checked　by　programming　calculation.　The　influence　of　total　efficiency　and　heating　temperature　on　the　power　performance　parameters　including　total　output　work　and　air　consumption　rate　is　analyzed.　Research　results　indicate　the　best　match　of　expansion　ratio　is　ten　to　seven　(nine　to　seven　and　nine　to　eight　are　also　good)　for　the　same　inlet　temperature　system　with　air　tank　of　30　MPa　pressure　and　300　L　volume.　Results　also　show　that　heating　up　inlet　air　or　increasing　the　system　efficiency　can　improve　the　total　output　work　and　reduce　the　air　consumption　rate.　It　is　concluded　that　the　compressed　air　engine　system　combined　two-stage　single　screw　expander　with　heating　is　better　than　single-stage　system.

Keyword：

Screws Compressed air Pressure vessels Air engines Compressed air motors Energy utilization

Author Community：

[ 1 ] [He, Wei]The Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
[ 2 ] [He, Wei]The Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wu, Yuting]The Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Wu, Yuting]The Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Ma, Chongfang]The Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Ma, Chongfang]The Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Ma, Guoyuan]The Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing University of Technology, Beijing 100124, China
[ 8 ] [Ma, Guoyuan]The Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, Beijing University of Technology, Beijing 100124, China