Consider a water-cooled compressor operating at steady state. In the compressor, R134-a is compressed from state 1 (saturated vapor, 1 bar) to state 2 (8 bar). The mass flow rate of the R134a is 0.9 kg/min while the HT from the compressor by water cooling is 140 kJ/min. If the power input to the ccompressor is 3 kW, calculate the R134a exit temperature from the compressor.?

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.