A piston cylinder device contains 5 kg hydrogen gas. Heat is transferred to the hydrogen as the temperature increases by 23.28 F. What is the boundary work done during this process kW.

Calculate the temperature of 0.39 mole of Xenon gas that occupies 9850 millimeters under a pressure of 631 torr.

A refrigerator absorbs 5 kJ of energy from a cold reservoir and rejects 8 kJ to a hot reservoir. (a) Find the coefficient of performance of the refrigerator. (b) The refrigerator is reversible and is run backward as a heat engine between the same two reservoirs. What is its efficiency?

Determine the mass density, specific weight, and specific volume of CO2 contained in a vessel at a pressure of 800 kN/m2 and temperature 25°C.

A 10-kg mass of superheated refrigerant-134a at 1.2 MPa and 70°C is cooled at constant pressure until it exists as a compressed liquid at 20°C. (a) Show the process on a T-v diagram with respect to saturation lines. (b) Determine the change in volume. (c) Find the change in total internal energy.

A 3-m-diameter tank is initially filled with water 2 m above the center of a sharp-edged 10-cm-diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmosphere through a 100-m-long pipe. The friction coefficient of the pipe is taken to be 0.015 and the effect of the kinetic energy correction factor can be neglected. In order to drain the tank faster, a pump is installed near the tank exit as in fig . Determine how much pump power input is necessary to establish an average water velocity of 4 m/s when the tank is full at z = 2 m. Also, assuming the discharge velocity to remain constant, estimate the time required to drain the tank. Someone suggests that it makes no difference whether the pump is located at the beginning or at the end of the pipe, and that the performance will be the same in either case, but another person argues that placing the pump near the end of the pipe may cause cavitation. The water temperature is 30°C, so the water…

If the reaction rate coefficient of BOD is 0.3 1/d at 20 oC, what will it be if the temperature is raised to 30 degree C?

22   A power plant has efficiency of 30 % as compared to Fuel Cell power plants. This power plant can be .......................................... a. Geothermal Power Plant b. Wind Power Plant c. Thermal Power Plants d. Biomass Power Plant

The concentration of PM inside a stack is 100,000 jig/m3. The stack gas exits at an average velocity of 20 m/s, and the stack has an inside diameter of 2 meters, The emission rate of PM5 in kg/day, is approximately:a. 1J5 kg/day b. 27.2 kg/dayc, 138 kg/day d. 543 kg/day