Download Vol. 2, Issue 1 Ali Aedan Shbeeb, Alaa Abbas Mahdi and Ahmed Kadhim Hussein Experimental Study for Assessment Air Age and Occupant Comfort by Adopting Combined Displacement Ventilation with Chilled Ceiling System in Iraq-Hilla City Abdel-Rahman Al-Qawasmi An Energy Efficiency and Management of Hybrid Solar Renewable Energy System for Farms: Engineering Economic Present Worth Analysis Approach Violeta Jevtovic Synthesis and X-ray Crystal Structure of the Bis-ligand Complex [Cr (PLSC-H)2.]2H2O (Bis[-2)-4carbamoylhydrazin-1-ylidene-k2,N1,O)-5hydroxymethyl-2-methylpyridinium-3-olato-kO3] Chromium (II) dihydrate) Fuhaid Alshammari Energy and Exergy Analyses of Automotive Organic Rankine Cycles 2019, Volume I, Second Issue 2021, Volume II, Issue 2