A closed system loses energy by heat transfer at the rate of 10kJ/s. If the system operates at steady state, calculate power in this process.

Give an example of in the absence of any work interactions, the energy change of a system is equal to the net heat transfer.

A closed system loses energy by heat transfer at the rate of 10KJ/s. If the system operates at steady state, explain whether work was done on the system or by the system.

In a piston cylinder system, a fluid at 0.8 bar occupying 0.07 m³ is compressed reversibly to a pressure of 10.2 bar and specific volume of 0.6 m³/kg according to the law p = c. The fluid then expands reversibly according to the law pv² = c to 1.1 bar. A reversible cooling at constant volume then restores the fluid back to initial state. Calculate the net work for the process in Joules. To 3 d.p. and insert the unit symbol joules.