Chapter 1 Basics of Heat Transfer1-28 The hydrogen gas in a rigid tank is cooled until its temperature drops to 300 K. The final pressure in the tank and the amount of heat transfer are to be determined. Assumptions1 Hydrogen is an ideal gas since it is at a high temperature and low pressure relative to its critical point values of -240°C and 1.30 MPa. 2 The kinetic and potential energy changes are negligible, . ΔΔkepe≅≅0Properties The gas constant of hydrogen is R = 4.124 kPa.m3/kg.K (Table A-1). Analysis(a) We take the hydrogen in the tank as our system. This is a closed systemsince no mass enters or leaves. The final pressure of hydrogen can be determined from the ideal gas relation, kPa178.6=
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This note was uploaded on 01/14/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.