What is the enthalpy (kJ/kg) of refrigerant 134a which is at 4C and quality 20%? Select...
What is the enthalpy (kJ/kg) of refrigerant 134a which is at 4C and quality 40%? Select one: a. h = 204.57 kJ/kg. O b. h=96.35 kJ/kg. O c. h = 135.46 kJ/kg. O d. h = 115.90 kJ/kg. O e. h = 155.02 kJ/kg. A car (1000 kg) climbs up a hill sloped at 28° while traveling at constant speed of 80 km/hr, what is the power (kW) required for the uphill motion? Select one: O a. power 102.3 kW....
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What is the enthalpy (kJ/kg) of refrigerant 134a which is at 4 C and quality 30%? Select one: a. h = 204.57 kJ/kg. b. h = 96.35 kJ/kg. c. h = 155.02 kJ/kg. d. h = 115.90 kJ/kg. e. h = 135.46 kJ/kg.
What is the enthalpy (kJ/kg) of refrigerant 134a which is at 4 C and quality 40%? Select one: a. h = 204.57 kJ/kg. O b. h = 96.35 kJ/kg. O c. h = 135.46 kJ/ kg. O d.h = 115.90 kJ/kg. O e. h = 155.02 kJ/kg.
What is the enthalpy (kJ/kg) of refrigerant 134a which
is at 4 C and quality 30%?
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LE 20 zain JO Zain JO Question 9 Not yet answered Marked out of 1.00 P Flag question A car (1000 kg) climbs up a hill sloped at 28° while traveling at constant speed of 80 km/hr, what is the power (kW) required for the uphill motion? Select one: a. power 108.7 kW. b. power 89.6 kW. c. power 119.7 kW. d. power...
Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the quality increases to 45%, what is the change in volume per one unit of mass (m3/kg)? The piston is assumed to move freely but it is sealed tight that does not allow mass exchange. Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the...
A liquid-vapor mixture of refrigerant-134a is at -10°C with a quality of 40 percent. Determine the value of the Gibbs function, in kJ/kg. when the two phases are in equilibrium. R-134a -10°C 0.4 kJ/kg kJ/kg
Problem 7.023 SI As shown in the figure below, 1.25 kg of refrigerant R-134a is contained in a well-insulated piston-cylinder assembly fitted with an electrical resistor of negligible mass. The refrigerant is initially at 2 bar and a quality of 50%. The resistor is activated until the volume of the refrigerant doubles, while its pressure varies negligibly. Determine, in kJ (a) the amount of energy transfer by work to the piston and (b) the accompanying exergy transfer. (c) the amount...
A rigid tank contains 56,4 kg of refrigerant- 134a at 850 kPa. If 32,6 kg of the refrigerant is in the liquid form and the rest is in the vapor form, determine : a. The temperature in the tank b. The quality c. The average specific volume d. The volume of the tank
Question 7 5 pts The entropy of a system consisting of refrigerant-134a at 24°C is 0.45 kJ/kg-K. The quality of the R- 134a is closest to: 50% Not applicable 25% O 75%
Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity of 10 m/s. The refrigerant enters the compressor as a saturated vapor at 10°C and leaves the compressor at 1400 kPa with an enthalpy of 281.39 kJ/kg with a negligible velocity. The rate of work done on the refrigerant is measured to be 380 kW. If the elevation change between the compressor inlet and exit is negligible, determine the rate of heat transfer associated...