Jassim, Asst. Prof. Dr. Najim Abid, and Kadhim Kareem Al-Chlaihawi. “Theoretical Performance Study of an Indirect- Expansion Solar Assisted Heat Pump”. Journal of Petroleum Research and Studies 7, no. 2 (May 15, 2017): 226-248. Accessed November 23, 2024. https://jprs.gov.iq/index.php/jprs/article/view/198.