Thermal energy available at a temperature

Assignment Help Mechanical Engineering

Reference no: EM13719352

If there is a total of 250 kJ of thermal energy available at a temperature of 500K, how much can be converted to useful work if the environment is at a temperature of 300K?

Reference no: EM13719352

Questions Cloud

Air expands through a turbine operating at steady state : Air expands through a turbine operating at steady state on a test stand. At the inlet, p=50 psia, T=1500 degrees R, and at the exit , p=14.5 psi. The volume flow rate of air entering the turbine is 2000 ft^3/min, and the power developed is measured a..

Determine mass flow rate of the steam and exit velocity : Steam enters a turbine steadily at 10 MPa and 550oC with a velocity of 60 m/s and leaves at 25 kPa with a quality of 90 percent. A heat loss of 30 kJ/kg occurs during the process. The inlet area of the turbine is 200 cm2, and the exit area is 1400 cm..

Fuel cell - energy application : Topic of energy application. So defunct technologies or technologies that are 10 years old or in commercial applications is not of interest.

Maintained at constant indoor air temperature : A building is losing heat at a rate of 7.0 kW when the outside air temperature is at 10 deg C. If it is to be heated using electric resistance heaters and maintained at a constant indoor air temperature of 25 deg. C,

Thermal energy available at a temperature : If there is a total of 250 kJ of thermal energy available at a temperature of 500K, how much can be converted to useful work if the environment is at a temperature of 300K?

Piston-cylinder device contains of nitrogen gas : A piston-cylinder device contains 1.0 kg of nitrogen gas at 150 kPa and 40oC. The gas is now compressed slowly in a polytropic process during which PV1.3 is constant. The process ends when the volume is reduced by one-half. Determine the entropy chan..

Steam produced in a boiler is frequently wet : Steam produced in a boiler is frequently 'wet' - it consists of a mist composed of saturated vapor and entrained liquid droplets. The quality of the wet steam is defined as the fraction of the mixture by mass that is vapor.

Steady state operation determine the exit temperature : H2O enters a well-insulated nozzle at 200 psia, 500 degrees F, with a velocity of 200 ft/s and exits at 60 psia, with a velocity of 1700 ft/s. for steady state operation determine the exit temperature

Determine the diameters of each duct : H2O at 520 degrees celsius, 12 MPa(abs) enters a control volume operating at steady state with a volume flow rate of 40 m^3/min, 22% of the entering mass flow exits at 220 degrees celsius, 1 MPa(abs), with a velocity of 20m/s.

User Account

All Pages