The compressed air energy storage station and the pumped - storage station , two kinds of large energy storage systems , have the advantages of quick dynamic response , high economy , and small environmental impacts 摘要壓縮空氣蓄能電站和抽水蓄能電站兩種大型電能存儲系統(tǒng),具有動態(tài)響應快、經(jīng)濟性能高、環(huán)境污染小等優(yōu)點,可起到負荷平衡、戰(zhàn)略規(guī)劃、提高供電質(zhì)量的作用。
Meanwhile , this technology can be used for compressed air energy storage ( caes ) in which the working pressure may be up to 15mpa . for hat , properties of humid air have been calculated at high pressures and low temperatures as well 在典型的熱力過程的計算時,特別是在計算高壓低溫條件下的濕空氣的熱力學性質(zhì)時,把濕空氣看作理想氣體會產(chǎn)生很大的偏差,這種偏差對熱力過程中的質(zhì)量和能量平衡的影響是不可接受的。
On the basis of virial state equation and the corresponding - states principle , a state equation of corresponding - states - virial is proposed to calculate thermodynamics properties of humid air , which is used as working substance in humid air turbine and compressed air energy storage ( caes ) system at high temperature and high pressure . the activity coefficient method and eos method are utilized to calculate the vapor - liquid equilibrium state of humid air . main contents of study listed as following : 1 用本文提供的計算模型對干空氣、水蒸汽和濕空氣的第二、第三維里系數(shù)進行了計算,并與asher提供的維里系數(shù)進行比較; 3 .用本文提出的對應態(tài)維里方程,計算得到濕空氣的壓縮因子,濕度在0 w 1kg / kg ( a )的范圍內(nèi)時,與實驗數(shù)據(jù)吻合較好。
According to the parameter range of humid air used in humid air turbine and compressed air energy storage ( caes ) system , the applied range of thermodynamics properties of humid air is determined . 2 . based on virial state equation and the corresponding - state principle , expand - corresponding - state principle is introduced to describe the virial coefficients of state equation 對應態(tài)理論是一個普適性理論,因此對應態(tài)維里方程具有一定的外推性,計算了本文提出濕空氣熱力學參數(shù)范圍內(nèi)的壓縮因子; 4 .應用本文提出的對應態(tài)維里方程,計算了濕空氣的偏差焓和偏差熵。
Compressed Air Energy Storage (CAES) is a way to store energy generated at one time for use at another time. At utility scale, energy generated during periods of low energy demand (off-peak) can be released to meet higher demand (peak load) periods.