Consider a water-cooled compressor operating at steady state. In the compressor, R134-a is compresseConsider 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 compressord 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

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation