أرسل هذا في رسالة قصيرة: Performance and economic evaluation of a photovoltaic/thermal (PV/T)-cascade heat pump for combined cooling, heat and power in tropical climate area

 _    _    __   __    ______     ___              
| \  / ||  \ \\/ //  /_____//   / _ \\      ___   
|  \/  ||   \ ` //   `____ `   | / \ ||    /   || 
| .  . ||    | ||    /___//    | \_/ ||   | [] || 
|_|\/|_||    |_||    `__ `      \___//     \__ || 
`-`  `-`     `-`'    /_//       `---`       -|_|| 
                     `-`                     `-`