20200206093500.0 Journal of energy and power engineering Journal of energy and power engineering 1934-8975 Journal of energy and power engineering. 1934-8975 1934-8975 http://www.davidpublisher.org/index.php/Home/Journal/detail?journalid=28&jx=JEPE 1934-8975 1934-8975 Journal of energy and power engineering. Illinois