Worked out solutions are needed The specific volume of a sys

Worked out solutions are needed

The specific volume of a system consisting of refrigerant-134a at 300 kPa is 0.05 m^3/kg. The quality of the R-134a is: 25 % 50 % 75 % Not applicable Gases behave as an ideal gas at: low temperature and low pressure. low temperature and high pressure. high temperature and high pressure. high temperature and low pressure. Ethane gas (P_c = 4.48 MPa, T_c = 305.5 K) is maintained at 6.39 MPa and 171 degree C. How much volume does 3 kg of this gas fill? 57.6 liters 0.06 liters 0.05 liters 49.0 liters A system contains water at 0.5 MPa, 100 degree C. The phase of this water is: Liquid Liquid-vapor mixture Vapor Solid In the absence of compress liquid data, how should properly data be estimated? From the compressibility chart. From the ideal gas law. From the critical point data for temperature and pressure. From the saturated liquid data at the temperature. In which region of the property diagram on the right is the compressed liquid state located? Region A Region B Region C Region D

Solution

1 a) from the h - s diagram of R - 134a at 300 kpa and 0.05 m³/kg, the quality of vapour is aproximately 75 percent. So anser is \'C

1b) at very lowpressure and low tempeatre gases behave like perfect gas.

So answer is \'A\'.

1c). By using pv mrt equation

Specific volume is 57.6 litres.

so answer is \'A.

1d)At 0.5 Mpa, the saturation temperature is

151.8 C which is greater than 100C. So

Water is in liquid state.

So answer is \'A. Liquid state.

1.e.answer is A.

1 f). Compressed liquid also called sub coled

Liquid. Answer is A.(region A).