MET 435 Refrigeration Plants Exam 2026

About this paper

MET 435: First Semester Examination, University of Buea, College of Technology, Department of Mechanical Engineering, instructors Dr Noume/Mrs Ntiaya, 10 February 2026: four calculation problems covering a Bell-Coleman air refrigeration cycle with compression/expansion isentropic efficiencies (refrigeration capacity and COP), an ammonia vapour-compression cycle with dry compression and wet-vapour entry, an ammonia machine with 95%-dry isentropic compression used to compute actual COP and ice production per kWh, and a methyl-chloride (R-40) cycle with superheated discharge.