SCI-M 216 THERMODYNAMICS LECTURE Chapter Notes -Joule, British Thermal Unit, Heat Capacity
11 Feb 2023
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Isobaric process (p = constant) is an internally reversible constant pressure process of a substance. 197. 85 kj: a certain gas, with cp = 0. 529 btu/lb r and r = 96. 2 ft-lb/lb r, expands from 5 ft3 and. 80 f to 15 ft3 while the pressure remains constant at 15. 6 psia. Compute (a) t2 (b) h (c) u (d) s and (e) work for an internally reversible non-flow process. Isothermal process (t = constant) is an internally reversible constant temperature process of a substance. Formulas: h = 0, u = 0. Exercises: air at 0. 50 m3 and 101 kpaa is compressed isothermally to 200 kpag. 0. 167 m3: find the work needed to isothermally compressed from 13 psia at 10 ft3 35 psia. 24. 14 btu: find the change of enthalpy needed to isothermally compressed from 100 kpa to. 500 kpa: find the change of entropy needed to isothermally compressed 4 kg of air from 103 kpa to 300 kpa.
