Refrigerant 134a expands in a piston-cylinder assembly from p₁ - 180 lb/in² and T₁ - 140°F to p2-30 lb/in² and T₂ -80 °F. The mass of refrigerant is 0.46 lb. During the process, the work done by the refrigerant is 4.32 Btu. Kinetic and potential energy effects are negligible. Determine the initial volume of the refrigerant, V₁. in ft³, and the heat transfer for the process, in Btu. Step 1

Refrigerant 134a expands in a piston-cylinder assembly from p₁ - 180 lb/in² and T₁ - 140°F to p2-30 lb/in² and T₂ -80 °F. The mass of refrigerant is 0.46 lb. During the process, the work done by the refrigerant is 4.32 Btu. Kinetic and potential energy effects are negligible. Determine the initial volume of the refrigerant, V₁. in ft³, and the heat transfer for the process, in Btu. Step 1

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Determine the work done by a 1 kgm fluid system as it expand slowly in a closed system from p1 = 2.84 Mpa, V1=0.08m^3 to v2 = 0.22m^3 in accordance to the defining relations: (a) p=c, (b) pv=c, (c) pv3 = c, (d) pv(InV) = c and (e) pv^1.4 = c. Express your answer in Calories.
Determine the work done by a kilogram of the fluid system as it expands slowly in a piston-cylinder arrangement from an initial pressure and volume of 550 kPa and 0.028 m3 respectively to a final volume of 0.113 m3in accordance with the following defining relations: a.) p = C; b.) pV = C; c.) pV1.4 = C; d.) p = -730V + 690 kpa where V is in m3
Thermodynamic problem. Determine the work necessary to compress a gas from an initial volume VI=90L to half the initial volume, if it is considered that the pressure varies with the volume according to the following equationp(V) = (350Kpa m3 ) / V - (50 Kpa/m3 ) V
Confine with 1 lb of wet steam at 500 F and with an enthalpy of 800 Btu in a rigid container. Heat is applied until the steam becomes saturated. Determine (a) the initial pressure p1, (b) quality x1, (c) volume v1, (d) the final pressure p2, and for the process,(e) W, (f) Q.
A cooled tire has a volume of 33.5 L at -12.59°C and 182.4 kPag. If the pressure and temperature are increased to 212.49 kPag and 45.5°C, respectively, determine the final volume in L.
A fluid system undergoes a non-flow frictionless process following the pressurevolume relation as p = (5/V2) + 1.5 where p is in bar and V is in m3. During theprocess the volume changes from 0.25 m3to 0.05 m3and the system rejects 45 kJ ofheat. Determine1. Change in internal energy2. Change in Enthalpy
Calculate the compressor work in kJ required to compress 1 kg of an ideal gas from an initial volume and pressure of 0.65m3 and 101.3kpa to a final pressure of 517kpa & volume of 0.1943m3. Ans. 133.549 kJ
Water initially at 100 kPa and 300°C undergoes an isobaric process in a closed piston-cylinder until the volume doubles. Calculate the amount of work out of the system, in kJ/kg. Round your answer to one decimal point. Calculate the amount of heat into the system, in kJ/kg. Round your answer to one decimal point.
A piston-cylinder containing steam at 700 kPa and 250°C undergoes a constant pressure process until the quality is 70%. Determine per kilogram (a) the work done, (b) the heat transferred, (c) the change of internal energy, and (d) the change of enthalpy.
A rigid tank contains 20 lbm of air at a pressure of 20 lbf/in2 and 70°F. More air is added to the tank until the pressure and temperature rise to 35 lbf/in2 and 90°F, respectively. Determine the mass of air added to the tank
A rigid vessel of volume 0.02 m3 contains 0.054 kg of steam at an initial pressure of 4 bar. Heat is supplied to the steam from an external source. Calculate (i) the initial quality of the steam, (ii) the temperature and quality of the steam when the pressure becomes 4.5 bar, (iii) the pressure of the steam when it is just dry saturated, and (iv) the temperature when the pressure reaches 7 bar. Indicate the process on a P-V and T-V diagram for water. [Answers: (i) 0.8, (ii) 147.9°C, 0.894, (iii) 5.07 bar, (iv) 298.4°C]
A closed tank A contains 3 ft3 of air at 500 psia and a temperature of 1200F. This tnk connects with tank B, which contains an unknown volume of air at 15 psia and 50oF. After the valve separating the two tanks is opened, the resulting pressure and temperature are 200 psia and 700F, respectively. Rair = 53.342 ft-lb/lb0R. a) Determine the mass of tank B. Answer in 4 decimal places. b) What is the volume of tank B? Answer in 3 decimal places.