Air (R=0.287 kJ/kg.K, c=1.005 kJ/kg.K) is contained in a piston cylinder device, it expands first isothermally (1=>2) thẹn isobaric expansion takes place (2=>3), given the following: v,- 0.2 m /kg, v,- 0.53 m /kg, v,-0.74 m /kg, P K. What is the work output (kJ/kg) during process 1-2? V3 600 kPa, T max 673 %3D min

Air (R=0.287 kJ/kg.K, c=1.005 kJ/kg.K) is contained in a piston cylinder device, it expands first isothermally (1=>2) thẹn isobaric expansion takes place (2=>3), given the following: v,- 0.2 m /kg, v,- 0.53 m /kg, v,-0.74 m /kg, P K. What is the work output (kJ/kg) during process 1-2? V3 600 kPa, T max 673 %3D min

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter46: Room Air Conditioners

Section: Chapter Questions

Problem 15RQ

See similar textbooks

Similar questions

Air is compressed into a 90 ft3 rigid tank until the pressure is 30.5 psia and the temperature becomes 580 0R. What is the mass of the air in lbm and the change in pressure when the temperature decreases to 300 0R Rair = 53.342 ft-lbf/ lbm-0R (c) What is the final pressure of the gas? (The value of gas constant, R = 0.4615 kJ/kg-K, Cp = 1.8723 kJ/kg-K, Cv = 1.4108 kJ/kg-K)
Fifty gallons per minute of water ent ers a cooling tower at a 46 deg C. Atmospheric airat 16 deg C DB and 55% RH enters the tower at 2.85 cu m per second and leaves at 32 deg C saturated.Determine (a) the volume of water that leaves the tower and (b) the exit temperature of the water.
p89#9. a certain ideal gas whose R=278.6J/kgm.K and Cp=1.015kJ/kgm.K expands isentropically from 1517 kPa,288 degree celsius to 965kPa. fro 454gmm/s of this gas detrmine,(a)Wnf,(b) V2,(c) change of internal energy and (d) change in enthalpy.
The pressure of steam 400 C and u = 2949 kJ/kg is most nearly
An ideal gas at 25 °C and 1.2 atm enters a pipe with an internal diameter of 4.5 inches. The average velocity at the entrance is 3.4 m/s, and the gas exits the pipe at 6.2 m/s and into the atmosphere, at 15 °C. Determine the diameter of the pipe at the exit.
What is the difference between specific internal energy and specific enthalpy in first law of Thermodyanamics and when should i use which? From what i understand so far for constant pressure process, we use q-w=h2-h1 and constant volume process, we use q-w = u2-u1. But this isnt the answer i am looking for.
Q1 / (0.2562m3) of saturated vapor at (2MPa). The ratio of dryness (0.9) expands the polytropia relationship (= Pv1.25) to (7bar). Calculate: According to V1-1 ms, 2- 02, Q 12, W 12, 2012 -3 X2 4- Find the final state of steam
This question is related to Thermodynamics and properties
A car’s tire has a pressure, temperature of 32 psi and 80 deg F, respectively. By mistake,the tire was filled with 0.768 lb of carbon dioxide (R = 0.0451 BTU/lb-R) before deflatingand inflating the tire again with air. Prove that:a. 0.502 lb of air was needed to fill the tire; andb. that there was change of pressure of 6.442 psi when the car started moving andthe temperature increased by 75 deg C.
subject: thermodynamics What are the specific volume, internal energy, enthalpy and entropy of steam at 1.50 MPa and 254°C?
In a condenser, vacuum is 720mm of Hg when the barometer reads 760mm. Mean temperature of condensate is 32°C. Exhaust steam coming to condenser is 45,000 kg per hour and its dryness fraction is 0.9. Determine the quantity of cooling water, in kg/min, required if the temperature rise of cooling water is 12°C.
An ammonia compressor has a volumetric effienciy og 85%, operating condensing & evaporating temperatures of 40 C & 10 C respectively for a cooling capacity of 10 tons with compression index of 1.2, mean piston speed of 2m/s, 5% clearance & bore to stroke ratio of 0.7. Determine the ff: 4. work of compressor in kj/kg 5. power of compressor in kj/kg 6. cooling coefficient of performance