purchase of lab equipments for mech . dept . - 2 determination of lmtd and effectiveness of parallel flow, counter flow and cross flow heat exchangers ( double pipe heat exchanger ) 3 determination of heat transfer coefficients in free convection ( free convection apparatus ) vertical pipe with acrylic enclosure 4 determination of heat transfer coefficients in forced convection ( forced convection apparatus ) 5 determination of thermal conductivity of solids ( composite wall ) 6 determination of thermal conductivity of powder 7 determination of thermal conductivity of liquids 8 determination of emissivity of a specimen ( emissivity apparatus ) 9 determination of stefan boltzman constant ( stefan boltzmann apparatus ) 10 study and performance test on refrigeration ( refrigeration test rig ) 11 study and performance test air conditioning equipment ( air conditioning test rig ) 12 performance study on heat pipe ( heat pipe )