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16 Nov 2019
q2 and q3 please
Write an equation for the First Law of Thermodynamics for an open system at steady state. Define all the terms and state their units. Derive an equivalent 'steady flow entropy equation' which describes the Second Law in such a system. Define the coefficient of performance for a heat pump and for a refrigerator. Derive the relationship between the two. Steam exits a turbine at 0.05 bar and has a specific enthalpy of 2200 kJ/kg. Calculate the quality of the steam and comment on the value. What is the specific entropy of the stream? A diesel engine can be modelled as a fixed mass of air undergoing a cycle comprised of four processes. First of all, the gas undergoes an isentropic compression. The combustion process is modelled as an isobaric heat addition. The hot gas then undergoes a reversible and adiabatic expansion, before the cycle is completed by an isochoric heat removal.
q2 and q3 please
Write an equation for the First Law of Thermodynamics for an open system at steady state. Define all the terms and state their units. Derive an equivalent 'steady flow entropy equation' which describes the Second Law in such a system. Define the coefficient of performance for a heat pump and for a refrigerator. Derive the relationship between the two. Steam exits a turbine at 0.05 bar and has a specific enthalpy of 2200 kJ/kg. Calculate the quality of the steam and comment on the value. What is the specific entropy of the stream? A diesel engine can be modelled as a fixed mass of air undergoing a cycle comprised of four processes. First of all, the gas undergoes an isentropic compression. The combustion process is modelled as an isobaric heat addition. The hot gas then undergoes a reversible and adiabatic expansion, before the cycle is completed by an isochoric heat removal.
Lelia LubowitzLv2
16 Nov 2019