A well-insulated expansion/throttle valve is designed to operate with refrigerant R134a. It receives a liquid-gas mixture...

A well-insulated expansion/throttle valve is designed to operate with refrigerant R134a. It receives a liquid-gas mixture with a quality of 0.1 and a pressure of 400 kPa. The refrigerant leaves with a pressure of 100 kPa. Find the temperature (in Celsius) and the specific volume (m3/kg) at the exit of the valve.

Expert Solution

steps:-

At first we arrange PH diagram. throttling is isoenthepic process so, it is occure a vertical line on PH diagram initial point of throatling is denote by point 1 and final point denote by point 2. by locating the point on a chart we find temperature of endpoint and from here we find volume of saturation condition finally we use thermodynamics property to get volume of endpoint.concept:- this question required basic ability to read chat and basic thermodynamics relation knowledge enable to find unknown.

samet mamat answered 3 years ago

An expansion valve in a refrigeration cycle throttles R134a from 1.2MPa saturated liquid to 0.32MPa. What...

An expansion valve in a refrigeration cycle throttles R134a from 1.2MPa saturated liquid to 0.32MPa. What is the specific volume at the exit of the expansion valve in unit of m3/kg. Round the result to 4 decimal places.

2) Operating a steady-state, a well insulated mixing chamber receives two input liquid streams of the...

2) Operating a steady-state, a well insulated mixing chamber receives two input liquid streams of the same substance but with temperatures T1 and T2 and mass flow rates m ̇ 1 and m ̇ 2 respectively. The streams are mixed in the chamber, exiting as a single stream with T3 and m ̇ 3. Assuming the substance is incompressible with constant specific heat C, that potential energy, kinetic energy, and pressure changes are negligible, obtain an expression for a) T3...

A well-insulated rigid tank contains 3kg of saturated liquid vapour-mixture of water at 250kpa. Initially, three...

A well-insulated rigid tank contains 3kg of saturated liquid vapour-mixture of water at 250kpa. Initially, three quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is turned on and kept on until all the liquid in the tank is vaporizer. Assuming the surroundings to be 25 degrees Celsius and 100kpa Determine: a) The exergy destruction and b) The second law efficiency for the process.

A rigid, well-insulated tank contains a two-phase mixture consisting of 0.005 ft3 of saturated liquid water...

A rigid, well-insulated tank contains a two-phase mixture consisting of 0.005 ft3 of saturated liquid water and 2.7 ft3 of saturated water vapor, initially at 14.7 lbf/in.2 A paddle wheel stirs the mixture until only saturated vapor remains in the tank. Kinetic and potential energy effects are negligible. For the water, determine the amount of energy transfer by work, in Btu.

refrigarent-134a enters the expansion valve of a refrigeration system at 1MPa as a satuarted liquid and...

refrigarent-134a enters the expansion valve of a refrigeration system at 1MPa as a satuarted liquid and leaves at 100kPa. determine the temperature change across the valve a.0 b.65.74C c.640C d.-26.37C

Determine the volume, in ft3, of 2 lb of a two-phase liquid–vapor mixture of Refrigerant 134A...

Determine the volume, in ft3, of 2 lb of a two-phase liquid–vapor mixture of Refrigerant 134A at 44°F with a quality of 40%.

A tank contains a two-phase liquid–vapor mixture of Refrigerant 22 at 10 bar. The mass of...

A tank contains a two-phase liquid–vapor mixture of Refrigerant 22 at 10 bar. The mass of saturated liquid in the tank is 25 kg and the quality is 30%. Determine the volume of the tank, in m3, and the percentage of the total volume occupied by saturated vapor.

A multi-stage gas turbine is to be designed with impulse stages, and is to operate with...

A multi-stage gas turbine is to be designed with impulse stages, and is to operate with an inlet pressure and temperature of 6 bar and 900 K, and an outlet pressure of 1 bar. The isentropic efficiency of the turbine is likely to be 85 per cent. All the stages are to have a nozzle outlet angle of 15 degrees, equal inlet and outlet blade angles, a mean blade speed of 250 m/s and equal 5 kJ/kg K o inlet...

Refrigerant 134a enters a well-insulated nozzle at 14 bar, 60°C, with a velocity of 37 m/s...

Refrigerant 134a enters a well-insulated nozzle at 14 bar, 60°C, with a velocity of 37 m/s and exits at 1.2 bar with a velocity of 460 m/s. For steady-state operation, and neglecting potential energy effects, determine the exit temperature, in °C.

A two-phase liquid–vapor mixture of Refrigerant 134a is contained in a 2-ft3, cylindrical storage tank at...

A two-phase liquid–vapor mixture of Refrigerant 134a is contained in a 2-ft3, cylindrical storage tank at 100 lbf/in.2 Initially, saturated liquid occupies 1.6 ft3. The valve at the top of the tank develops a leak, allowing saturated vapor to escape slowly. Eventually, the volume of the liquid drops to 0.6 ft3. If the pressure in the tank remains constant, determine (a) the mass of refrigerant that has escaped, in lb, and (b) the heat transfer, in Btu. PLEASE USE THE...

Question