电力与能源
電力與能源
전력여능원
Power and Energy
2014年
6期
678-682,686
,共6页
经典热力学%可逆循环%空气标准 Lenoir 循环%热力学分析
經典熱力學%可逆循環%空氣標準 Lenoir 循環%熱力學分析
경전열역학%가역순배%공기표준 Lenoir 순배%열역학분석
Classical thermodynamics%Reversible cycle%Air-standard Lenoir cycle%Thermodynamic analysis
考虑实际循环中工质比热随温度变化的特性，建立了工质比热随温度线性变化时的可逆空气标准Lenoir 循环模型，运用经典热力学理论和方法，结合数值计算对循环进行热力学分析，得到了循环输出功和压缩比、效率和压缩比以及功与效率之间的特性关系。通过与工质比热恒定时的空气标准 Lenoir 循环性能进行分析比较，可知工质的线性变比热特性对 Lenoir 循环的热力学性能有较大的影响。所得结论对该循环的应用有一定指导作用。
攷慮實際循環中工質比熱隨溫度變化的特性，建立瞭工質比熱隨溫度線性變化時的可逆空氣標準Lenoir 循環模型，運用經典熱力學理論和方法，結閤數值計算對循環進行熱力學分析，得到瞭循環輸齣功和壓縮比、效率和壓縮比以及功與效率之間的特性關繫。通過與工質比熱恆定時的空氣標準 Lenoir 循環性能進行分析比較，可知工質的線性變比熱特性對 Lenoir 循環的熱力學性能有較大的影響。所得結論對該循環的應用有一定指導作用。
고필실제순배중공질비열수온도변화적특성，건립료공질비열수온도선성변화시적가역공기표준Lenoir 순배모형，운용경전열역학이론화방법，결합수치계산대순배진행열역학분석，득도료순배수출공화압축비、효솔화압축비이급공여효솔지간적특성관계。통과여공질비열항정시적공기표준 Lenoir 순배성능진행분석비교，가지공질적선성변비열특성대 Lenoir 순배적열역학성능유교대적영향。소득결론대해순배적응용유일정지도작용。
Considering the effects of variable specific heats of working fluid on the performance of practical cy-cle,a thermodynamic model of a reversible air-standard Lenoir cycle with the linear relation between specific heat of working fluid and its temperature was established by using the classical thermodynamics.The relations between the work output and the compression ratio,between the efficiency and the compression ratio,as well as between the work output and efficiency were derived by detailed numerical examples.Moreover,by compa-ring with the thermodynamic performance of air-standard Lenoir cycle with constant specific heats of working fluid,it was known that the effected of variable specific heats of working fluid on the cycle performance were obvious.The results may provide some guidelines for the application of the Lenoir cycle.
