A tank of compressed air is at 40°C and 10 atm. 1 third of the gas is removed for inflating a car tire. The tank is allowed to exchange heat with the surroundings to maintain its temperature at all times. What kind of a process is this? What is the pressure remaining in the tank? a. Sketch the problem. b.Draw lines identifying the control volume, or control mass. c.Identify the states with numbers, letters, or descriptions such as “in” and “out”.

An ideal gas having a gas constant of 0.4 kJ/(kg K) has a pressure of 2 bar and a temperature of 400 K. The volume occupied by 40 kg of the gas is?

In detail ,Must be handwritten only.

please answer do not image format

Water is heated in a closed container with rigid walls that is a perfect cube (1 m x 1 m x 1 m). The initial volume of the water (liquid + vapor) is 1 m'. The initial temperature of the water is 100 °C and it has a quality of 0.3. It is heated until it reaches a final pressure of 700 kPa. a. Sketch the process on the P V diagram. b. What is the work done by the water during this heating process in kJ? c. What is the final temperature of the water? d. What is the heat required in order for this process to occur in kJ? P V

1. An ideal gas with R = BTU 0.062- and Cy =0.158 BTU undergoes a three Ibm-°R process cycle in aclosed system. From the initial state of 20 psia and 570 °R, the gas is compressed at constant temperature to 1/5 of its initial volume, process 1-2; it is then heated isochorically to state 3,process 2-3; and finally, it expands polytropically with index n= 1.5 back to its initial state, process 3-1. Determine the pressures, specific volumes and temperatures at eardinal points around the cycle and the cycle thermal efficiency.

8 3 J >» يقوم الانتقال إلى سؤال آخر بحفظ هذا الرد. السؤال 3 حفظ الإجابة 1.5 A rigid tank contains air at 550 kPa and 190 °C. As a result of heat transfer to the surroundings, the temperature and pressure inside the tank drops to 85 °C and ?420 kPa, respectively. What is true about boundary work for this problem Wb will be maximum .1 O Wb will be negative .2 O Wb = 0 .3 O None 4 O « » ي يقوم الانتقال إلى سؤال آخر بحفظ هذا الرد. (8)

b) As shown in Figure A2-b, an insulated rigid container holds 1.4 kg of saturated water and air. At the initial state, the temperature of the saturated water is 210°C and 75% of the volume is occupied by air and the rest by the saturated liquid. An electric heater inside the container heats the water and converts to saturated vapor after 0.333 hours. Air Water 1.4kg, 210°C Figure PLEASE TURN OVER (i) Determine the volume of the container in m³. (ii) Determine the temperature of the saturated vapor (iii) Determine the power of the resistor

QUESTION 37 In an experiment, a certain amount of air is heated at constant pressure from 1.7 m³, 38 °C and 97 kPa to 415 UC. It is then cooled at constant volume back to its initial temperature. Calculate the change specific entropy in the cooling process in the correct unit in SI and 1 decimal place. Take Specific heat at constant pressure and constant volume for 0.717 kJ/kg K air as 1.004 kJ/kg K and respectively. add units. I decimal place.

0.25 gm/sec of wet steam with 0.6MPa and dryness faction of 0.96, undergoes an isochoric process until it becomes saturated. Determine its dS, dH, dU, Wnf, Wsf, and Q