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1. the mass in kg of the air...
Two kg of air as an ideal gas with constant properties expands inside a piston-cylinder device...
Two kg of air as an ideal gas with constant properties expands inside a piston-cylinder device from an initial state where P. - 200 kPa. T-7°C to a state where P2 - 100 kPa and T2- 327° (Assume cp = 1.003 kJ/Kg.K.cv -0.716 kJ/kg.K. and R=0.287 kJ/Kg.K). 3. The change in internal energy, in kJ, between the specified states is most nearly: -483 460 - 166 -241 -322 120 . 231 144
Required information An air-standard Diesel cycle has a compression ratio of 16 and a cutoff rati...
Required information An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process, air is at 103 kPa and 27℃. Assume constant specific heats. The properties of air at room temperature are Cp-1.005 kJ/kg-K, cv-0718 kJ/kg.K, R= 0.287 kJ/kg-K, and k = 1.4 Determine the mean effective pressure The mean effective pressure is「 kPa.
Required information An air-standard Diesel cycle has a compression ratio of 16 and a...
1. (10 pts) A 10 m® rigid storage tank contains oxygen gas (R = 0.2598 kJ/kg.K,...
1. (10 pts) A 10 m® rigid storage tank contains oxygen gas (R = 0.2598 kJ/kg.K, Cp = 0.918 kJ/kg.K, cv = 0.658 kJ/kg.K). The tank is initially 200 kPa and 600° It is cooled to 25°C in 35 minutes. Determine: 1. (3 pts) The mass of oxygen in the tank, in kg. 2. (3 pts) The final pressure in the tank, in kPa. 3. (4 pts) The rate of heat transfer from the oxygen, in kW.
A block of iron ore A of mass m = 350 kg and specific heat capacity...
A block of iron ore A of mass m = 350 kg and specific heat capacity C = 460 kJ/(kg·K) obeys the constitutive relations where T is temperature. The block of metal is initially at temperature T1 = 700 K and it is placed in a perfectly-sealed, constant-pressure container B containing 64 kg of air initially at 320 K and atmospheric pressure 101.3 kPa. The air in container B can be modeled as a perfect gas with specific heat capacity...
1)(Hint: Cp=1.005 kJ/kg-K, Cv=0.718 kJ/kg-K, R=0.287 kJ/kg-K). An air-tight room contains 80 kg of air, and...
1)(Hint: Cp=1.005 kJ/kg-K, Cv=0.718 kJ/kg-K, R=0.287 kJ/kg-K). An air-tight room contains 80 kg of air, and a 2-kW baseboard electric resistance heater in the room is turned on and kept on for 15 min. The temperature rise of air at the end of 15 min is 2)An example of when it is appropriate to model a substance as an ideal gas is when a. The pressure and temperature are close to the critcal point b. The pressure and temperature are...
Required information Problem 04.079 - Energy balance for air in a piston-cylinder device with stops NOTE:...
Required information Problem 04.079 - Energy balance for air in a piston-cylinder device with stops NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A piston-cylinder device, whose piston is resting on a set of stops, initially contains 6 kg of air at 200 kPa and 27°C. The mass of the piston is such that a pressure of 400kPa is required to move it. Heat is now transferred to...
Problem 3: A 9-m container is filled with 300 kg of R-134a at 10°C. What is...
Problem 3: A 9-m container is filled with 300 kg of R-134a at 10°C. What is the specific enthalpy of the R-134a in the container? Problem 4: a piston-cylinder device contains 0.6 kg of steam at 200 Cand 0.5 MPa. Steam is cooled at constant pressure until one-half of the mass condenses. Show the process on a T-v diagram b) a) Find the final temperature c) Determine the volume change Problem 5:10 kg of R-134a at 320 kPa fills a...
Need help for this Brayton Cycle problem. Please help me 4. (30 marks) A gas-turbine power plant operates on the simple...
Need help for this Brayton Cycle problem.
Please help me
4. (30 marks) A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 kPa and 800 kPa. The T-s diagram of this cycle is shown in Fig. 2. Air enters the compressor at 30°C and leaves at 330°C at a mass flow rate of 200 kg/s. The maximum cycle temperature is 1400 K. During operation of the cycle, the net power output is measured...
Problem #3 (Total marks-14) Given: An engine has the following operating conditions per air-standard Otto cycle:...
Problem #3 (Total marks-14) Given: An engine has the following operating conditions per air-standard Otto cycle: Gasolina (SI) TYCO engine Pressure at beginning of compression process (Pal state 1 Temperature at beginning of compression process state 1) Volumetric compression ratio , Specific heat added during combustion process ( k g) (process 273) 300 1400 Data used for constant Specific Heat (standard cold-air assumption) Method: Ic ... 1.005 kJ/kg. K(C) = 0.718 kJ/kg.K. k=1.400, R -0.287 kJkgK Required: Draw a clear...
Two kg of air as an ideal gas with constant properties expands inside a piston-cylinder device from an initial state where P. - 200 kPa. T-7°C to a state where P2 - 100 kPa and T2- 327° (Assume cp = 1.003 kJ/Kg.K.cv -0.716 kJ/kg.K. and R=0.287 kJ/Kg.K). 3. The change in internal energy, in kJ, between the specified states is most nearly: -483 460 - 166 -241 -322 120 . 231 144
Required information An air-standard Diesel cycle has a compression ratio of 16 and a cutoff ratio of 2. At the beginning of the compression process, air is at 103 kPa and 27℃. Assume constant specific heats. The properties of air at room temperature are Cp-1.005 kJ/kg-K, cv-0718 kJ/kg.K, R= 0.287 kJ/kg-K, and k = 1.4 Determine the mean effective pressure The mean effective pressure is「 kPa.
Required information An air-standard Diesel cycle has a compression ratio of 16 and a...
1. (10 pts) A 10 m® rigid storage tank contains oxygen gas (R = 0.2598 kJ/kg.K, Cp = 0.918 kJ/kg.K, cv = 0.658 kJ/kg.K). The tank is initially 200 kPa and 600° It is cooled to 25°C in 35 minutes. Determine: 1. (3 pts) The mass of oxygen in the tank, in kg. 2. (3 pts) The final pressure in the tank, in kPa. 3. (4 pts) The rate of heat transfer from the oxygen, in kW.
Required information Problem 04.079 - Energy balance for air in a piston-cylinder device with stops NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A piston-cylinder device, whose piston is resting on a set of stops, initially contains 6 kg of air at 200 kPa and 27°C. The mass of the piston is such that a pressure of 400kPa is required to move it. Heat is now transferred to...
Problem 3: A 9-m container is filled with 300 kg of R-134a at 10°C. What is the specific enthalpy of the R-134a in the container? Problem 4: a piston-cylinder device contains 0.6 kg of steam at 200 Cand 0.5 MPa. Steam is cooled at constant pressure until one-half of the mass condenses. Show the process on a T-v diagram b) a) Find the final temperature c) Determine the volume change Problem 5:10 kg of R-134a at 320 kPa fills a...
Need help for this Brayton Cycle problem.
Please help me
4. (30 marks) A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 kPa and 800 kPa. The T-s diagram of this cycle is shown in Fig. 2. Air enters the compressor at 30°C and leaves at 330°C at a mass flow rate of 200 kg/s. The maximum cycle temperature is 1400 K. During operation of the cycle, the net power output is measured...
Problem #3 (Total marks-14) Given: An engine has the following operating conditions per air-standard Otto cycle: Gasolina (SI) TYCO engine Pressure at beginning of compression process (Pal state 1 Temperature at beginning of compression process state 1) Volumetric compression ratio , Specific heat added during combustion process ( k g) (process 273) 300 1400 Data used for constant Specific Heat (standard cold-air assumption) Method: Ic ... 1.005 kJ/kg. K(C) = 0.718 kJ/kg.K. k=1.400, R -0.287 kJkgK Required: Draw a clear...
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