This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 1 2 (7 points) Sketch the T – s diagram for an ideal vaporcompression refrigeration cycle. Denote the exit of the evaporator 1, the entrance of the condenser 2, the exit of the condenser 3 and the entrance of the evaporator 4. Derive expressions (all per unit mass of refrigerant) for the heat transfer into the evaporator, the heat transfer out of the condenser and the power input into the compressor. Derive an expression for the coefﬁcient of performance. What is the relation between h 3 and h 4 ? 2 3 (10 points) Steam is the working ﬂuid in an ideal Rankine cycle. Saturated vapor enters the turbine at 8 . 0 MPa and saturated liquid exits the condenser at 0 . 008 MPa. Determine for the cycle (a) the thermal efﬁciency, (b) the mass ﬂow rate of the steam, (c) the rate of heat transfer into the working ﬂuid as it passes through the boiler and from the condensing steam as it passes through the condenser. 3...
View
Full Document
 Fall '07
 ?
 Chemical Engineering, Thermodynamics, Heat Pump, Thermodynamic cycles

Click to edit the document details