新能源进展
新能源進展
신능원진전
Advances in New and Renewable Enengy
2014年
2期
122-128
,共7页
低温地热%有机朗肯循环%蒸汽压缩制冷%工质选择%系统性能
低溫地熱%有機朗肯循環%蒸汽壓縮製冷%工質選擇%繫統性能
저온지열%유궤랑긍순배%증기압축제랭%공질선택%계통성능
low-temperature geothermal energy%organic Rankine cycle%vapor compression refrigeration cycle%working fluids selection%system performance
为有效利用低温地热资源，本文以有机朗肯-蒸汽压缩制冷系统为研究对象，建立了系统的热力学模型，分析比较了分别以R290、R600、R600a、R601、R601a和R1270为工质时的系统性能，并以系统整体COP和每kW制冷量所对应的工质流量为关键指标对工质进行了优选。分析结果表明：当地热水温度为60℃~90℃、冷凝温度为30℃~55℃、蒸发温度为-15℃~15℃时，R601是系统的最佳工质。当地热水温度为90℃，其余参数为典型工况值时，工质R601所对应的系统性能系数COP为0.49。
為有效利用低溫地熱資源，本文以有機朗肯-蒸汽壓縮製冷繫統為研究對象，建立瞭繫統的熱力學模型，分析比較瞭分彆以R290、R600、R600a、R601、R601a和R1270為工質時的繫統性能，併以繫統整體COP和每kW製冷量所對應的工質流量為關鍵指標對工質進行瞭優選。分析結果錶明：噹地熱水溫度為60℃~90℃、冷凝溫度為30℃~55℃、蒸髮溫度為-15℃~15℃時，R601是繫統的最佳工質。噹地熱水溫度為90℃，其餘參數為典型工況值時，工質R601所對應的繫統性能繫數COP為0.49。
위유효이용저온지열자원，본문이유궤랑긍-증기압축제랭계통위연구대상，건립료계통적열역학모형，분석비교료분별이R290、R600、R600a、R601、R601a화R1270위공질시적계통성능，병이계통정체COP화매kW제랭량소대응적공질류량위관건지표대공질진행료우선。분석결과표명：당지열수온도위60℃~90℃、냉응온도위30℃~55℃、증발온도위-15℃~15℃시，R601시계통적최가공질。당지열수온도위90℃，기여삼수위전형공황치시，공질R601소대응적계통성능계수COP위0.49。
To efficiently utilize low-temperature geothermal energy, an organic Rankine cycle-vapor compression refrigeration (ORC-VCR) system was employed and a thermodynamic model was developed. Six working fluids of R290, R600, R600a, R601, R601a and R1270 were analyzed and evaluated in order to identify suitable working fluids which may yield high system efficiencies. The overall COP and working fluid mass flow rate of per kW cooling capacity are chosen as key performance indicators. The calculated results show that R601 is the best working fluid for the ORC-VCR system as the geothermal water temperature is between 60oC and 90oC, the condensation temperature ranges from 30oC to 55oC and the evaporation temperature varies from 30oC to 55oC. When the geothermal water temperature reaches 90oC and the other input parameters are in typical values, the overall COP of the R601 case reaches 0.49.
