An ideal vapor-compression refrigeration cycle operates at steady state with refrigerant 134a as the working fluid. saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. the mass flow rate of refrigerant is 7 kg/min. determine (a) the compressor power, in kw. (b) the refrigerating capacity, in tons. (c) the coefficient of performance.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg. k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m. k

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