流体机械
流體機械
류체궤계
Fluid Machinery
2015年
8期
78-82,31
,共6页
涡流分离%热气体%再加热%CO2热泵系统
渦流分離%熱氣體%再加熱%CO2熱泵繫統
와류분리%열기체%재가열%CO2열빙계통
vortex separation%hot gas%reheating%CO2 heat pump system
对涡流分离热气体再加热的CO2 热泵系统进行热力性能分析,并与相同运行工况下的节流降压CO2 热泵系统的性能进行了对比,得出涡流分离热气体再加热的CO2 热泵系统存在最优的高压压力,在最优的高压压力下,系统获得最大的制热性能系数. 提高分离热气体质量比、中间压力、蒸发温度、涡流管制热效应,降低气体冷却器出口温度,涡流分离热气体再加热的CO2 热泵系统的制热性能系数提高. 随着热气体质量比的增加和气体冷却器出口温度的升高,涡流分离热气体再加热的CO2 热泵系统最优的气体冷却器出口压力也升高. 在热气体质量比仅为0.2时,涡流分离热气体再加热的CO2 热泵系统相比节流降压CO2 热泵系统,最佳的制热性能系数提高11%. 随着热气体质量比的增加,差值会进一步增大. 气体冷却器出口温度的升高,对涡流分离热气体再加热的CO2 热泵系统制热性能系数的影响要小于对节流降压CO2 热泵系统的制热性能系数的影响.
對渦流分離熱氣體再加熱的CO2 熱泵繫統進行熱力性能分析,併與相同運行工況下的節流降壓CO2 熱泵繫統的性能進行瞭對比,得齣渦流分離熱氣體再加熱的CO2 熱泵繫統存在最優的高壓壓力,在最優的高壓壓力下,繫統穫得最大的製熱性能繫數. 提高分離熱氣體質量比、中間壓力、蒸髮溫度、渦流管製熱效應,降低氣體冷卻器齣口溫度,渦流分離熱氣體再加熱的CO2 熱泵繫統的製熱性能繫數提高. 隨著熱氣體質量比的增加和氣體冷卻器齣口溫度的升高,渦流分離熱氣體再加熱的CO2 熱泵繫統最優的氣體冷卻器齣口壓力也升高. 在熱氣體質量比僅為0.2時,渦流分離熱氣體再加熱的CO2 熱泵繫統相比節流降壓CO2 熱泵繫統,最佳的製熱性能繫數提高11%. 隨著熱氣體質量比的增加,差值會進一步增大. 氣體冷卻器齣口溫度的升高,對渦流分離熱氣體再加熱的CO2 熱泵繫統製熱性能繫數的影響要小于對節流降壓CO2 熱泵繫統的製熱性能繫數的影響.
대와류분리열기체재가열적CO2 열빙계통진행열력성능분석,병여상동운행공황하적절류강압CO2 열빙계통적성능진행료대비,득출와류분리열기체재가열적CO2 열빙계통존재최우적고압압력,재최우적고압압력하,계통획득최대적제열성능계수. 제고분리열기체질량비、중간압력、증발온도、와류관제열효응,강저기체냉각기출구온도,와류분리열기체재가열적CO2 열빙계통적제열성능계수제고. 수착열기체질량비적증가화기체냉각기출구온도적승고,와류분리열기체재가열적CO2 열빙계통최우적기체냉각기출구압력야승고. 재열기체질량비부위0.2시,와류분리열기체재가열적CO2 열빙계통상비절류강압CO2 열빙계통,최가적제열성능계수제고11%. 수착열기체질량비적증가,차치회진일보증대. 기체냉각기출구온도적승고,대와류분리열기체재가열적CO2 열빙계통제열성능계수적영향요소우대절류강압CO2 열빙계통적제열성능계수적영향.
The CO2 heat pump system with reheating of vortex separation hot gas is designed.The thermal performances of this CO2 heat pump system with reheating of vortex separation hot gas are analyzed and compared with that of the CO2 heat pump sys-tem of throttle at the same running condition.The following conclusions are obtained.The CO2 heat pump system with reheating of vortex separation hot gas has the optimal high pressure,and has maximum coefficient of performance ( COP) for heating at this optimal high pressure.The coefficient of performances for heating of the CO2 heat pump system with reheating of vortex separation hot gas can be improved by increasing the mass ratio of hot gas,middle pressure,evaporation temperature,heating effect,as well as by decreasing the temperature of gas-cooler outlet.The optimal pressure of gas-cooler outlet of this CO2 heat pump system with re-heating of vortex separation hot gas rises with the increasing of the mass ratio of hot gas and temperature of gas-cooler outlet.At the mass ratio of hot gas is only 0.2,the maximum coefficient of performance for heating of the CO2 heat pump system with rehea-ting of vortex separation hot gas compared with the CO2 heat pump system of throttle increases of 11%,and the difference value will increase further with the increasing the mass ratio of hot gas.The effect of temperature of gas-cooler outlet increasing on the coefficient of performances for heating of the CO2 heat pump system with reheating of vortex separation hot gas is less than that of the CO2 heat pump system of throttle.
