Question

Air in a tank undergoes a heating process from 25°C to 100°C. Assuming that air behaves...


Air in a tank undergoes a heating process from 25°C to 100°C. Assuming that air behaves as an ideal gas with constant specific heat, find the change in specific enthalpy and specific internal energy for the process.


Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #2

answered by: anonymous
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is...
5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is received at temperature?1=727°C and rejected at ?3=27°C.During the heat input process, the pressure changes from ?1=1200kPa to ?2=900kPa, respectively. Assume the air behaves as an ideal gas with constant specific heats. Determine: a.pressures [kPa] at beginning and end of the isothermal heat rejection process (?3,?4) b.heat transfer from high temperature source [kJ] c.thermal efficiency d.net work output for cycle [kJ]
Nitrogen (N2) undergoes an internally reversible process from 6 bar, 247°C during which pν1.1 = constant....
Nitrogen (N2) undergoes an internally reversible process from 6 bar, 247°C during which pν1.1 = constant. The initial volume is 0.1 m3 and the work for the process is 50 kJ. Assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kJ, and the entropy change, in kJ/K. Q = kJ ΔS = kJ/K
Air was compressed (polytropic process) from p1= 100kPa and T1= 293Kto p2= 0.3MPa and v2=0.2803m3/kg. The...
Air was compressed (polytropic process) from p1= 100kPa and T1= 293Kto p2= 0.3MPa and v2=0.2803m3/kg. The isentropic exponent of the gas and specific gas constant are 1.4 and 287 J/(kgK), respectively. Determine (a) polytropic exponent, (b) heat and work of this process, (c) change of internal energy, (d) change of entropy of air,if mass of air is 2kgand air can be treated as ideal gas.Additionally,(e) draw the process on the p-v and T-s diagrams.You can round temperature to one decimal...
Air is heated from 25 C to 140C prior to entering a combustion furnace. the change...
Air is heated from 25 C to 140C prior to entering a combustion furnace. the change in specific enthalpy associated with this transition is 3349 j/mol. The flow rate of air at the heater oulet is 1.65 m^3/min and air pressure is 122Kpa apsolute. a) Calculate the heat requirements in kW, assuming ideal gas behavior and that the kinetic and potential energy changes from the heater inlet to the outlet are negilible. b) would the value of the cahnge in...
1-kg of R-134a initially at 600 kPa and 25 °C undergoes a process during which the...
1-kg of R-134a initially at 600 kPa and 25 °C undergoes a process during which the entropy is kept constant until the pressure drops to 100 kPa. Determine the final temperature of the R-134a and the final specific internal energy.
You are given an ideal gas which undergoes a process where the internal energy U is...
You are given an ideal gas which undergoes a process where the internal energy U is a function of the volume, V according to U = bV^ f , where b and f are known constants. You know the ratio of specific heats, γ. (a) Suppose the internal energy is increase by a finite amount ∆. What work is performed by the gas. (b) What amount of heat is transferred to the gas in the situation (a). (c) What is...
A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from...
A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from an initial volume of 48 m3 to a final volume of 30 m3 . During the process, the piston supplies 1.2 MJ of work to the gas. The gas has a constant specific heat at constant volume of 1.80 kJ/(kg∙K) and a specific gas constant of 1.48 kJ/(kg∙K). Neglect potential and kinetic energy changes. a. Determine the initial specific volume of the gas in...
a 4kg of air initially at 295k and 325 kpa, is heated at constent pressure in...
a 4kg of air initially at 295k and 325 kpa, is heated at constent pressure in a poston-cylinder device. the final temperature of the air is 405k. assuming the air behaves as an ideal gas with constant specific heat, determine the amount of heat added during the process.
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is...
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is pv1.2 = constant. The mass of the gas is 0.4 lb and the following data are known: p1 = 160 lbf/in.2, V1 = 1 ft3, and p2 = 300 lbf/in.2 During the process, heat transfer from the gas is 2.1 Btu. Kinetic and potential energy effects are negligible. Determine the change in specific internal energy of the gas, in Btu/lb. Δu⁢=
Air is contained in a rigid, well-insulated container of volume 3 m3. The air undergoes a...
Air is contained in a rigid, well-insulated container of volume 3 m3. The air undergoes a process from an initial state with a pressure of 200 kPa and temperature of 300 K. During the process, the air receives 720 kJ of work from a paddle wheel. Model the air as an ideal gas with constant specific heats. Evaluate the specific heats at 300 K. Neglect changes in kinetic energy and potential energy. Determine the mass of the air in kg,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT