A parametric study of assembly pressure, thermal expansion, and membrane swelling in PEM fuel cells.rnPerformance of photovoltaic systems: green office's case study approach.rnEarthing system for stand alone PV solar house.rnTurbulent flow heat transfer and pressure loss in a double pipe heat exchanger with triangular fins.rnEvaluation of a pilot-scale wood torrefcaction plant based on pellet properties and finnish market economics.rnExperimental investigation of compound side weir with modeling using computational fluid dynamic.rnOptimal configuration for a finite low-temperature source refrigerator cycle with heat transfer law.