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TH10Ch04 - Non-Flow Thermodynamic Processes Constant...

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Non-Flow Thermodynamic Processes p ( ) c pv e Temperatur Constant 1 = ( ) c pv Pressure Constant 0 = ( ) c pv Process Adiabatic k = ( ) c pv Volune Constant = ( ) c pv Process Ploytropic n = v
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CONSTANT VOLUME NON_FLOW PROCESS dT c du BTU/lb kJ/kg, dT c u u m Q q BTU kJ, ) T (T c m ) u (u m Q 0 pdV W W E Q v v 1 2 1 2 v 1 2 = = = = × = × = = = + = CONSTANT PRESSURE NON-FLOW PROCESS ( ) ( ) dT c dh dT c h h q v p u v p u q ) v p v (p m ) u (u m Q /lb lb ft kJ/kg, ) T (T R ) v p v (p m W w lb ft kJ, ) v (v p m dv p m dV p W W E Q p p 1 2 1 1 1 2 2 2 1 1 2 2 1 2 m f 1 2 1 1 2 2 f 1 2 = = = + + = × + × = × = = = × × = × = = + =
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Constant Temperature Non-Flow Process ( ) V ln RT q V ln RT m Q dV V RT m Q V mRT p Law Gas Ideal mRT pV pdV Q 0 E System Closed Flow - Non Law, First W E Q v v p p constant pv 2 1 1 2 1 = = = = = = = + = = = = = = = = = 1 2 2 2 1 2 1 1 2 1 1 2 1 2 1 2 v v ln J v p q v v ln v p q p p ln RT m v v ln RT m Q v v ln RT m V V ln RT m Q
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What is the heat flow when 3 lb of nitrogen undergoes a constant temperature process at 300 F from an initial volume of 40 ft3 to a final volume of 22.5 ft3?
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