A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as...
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A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as a Soave- Redlich-Kwong gas and with Cp* = 100 J/(mol·K), from 300 K and 2 m^3 to 800 K and 0.02 m^3 by using less than 5 MJ of work. Is this possible?
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A well-insulated, closed device claims to be able to compress
100 mol of propylene, acting as...
A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as...
A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as a Soave Redlich-Kwong gas and with CP = 100 J/(mol-K), from 300 K and 2 m² to 800 K and 0.02 m² by using less than 5 MJ of work. Is this possible?
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into...
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into halves by a separator. On one side of the separator is 1 m of air at 300 K, 2 bar. On the other side is 1 m of air at 500 K, 1 bar. The separator is removed, and the air from the two sides mixes and reaches equilibrium state Please treat the air as ideal gas with cp-1.001 kJ/kg K and c0.714 kJ/kg...
Answers are next to the problems. 2. A small, un-insulated closed cylinder with a freely moving...
Answers are next to the problems.
2. A small, un-insulated closed cylinder with a freely moving piston contains air and is accidentally dropped into a lake and falls slowly to the bottom at 100 m below the surface Initially, the air in the cylinder is at atmospheric pressure of 100 kPa with a volume of 0.1 m3 and a temperature of 20°C. The lake is also at a uniform and constant temperature of 20°C. As the cylinder falls, the air...
2. A thermal energy storage unit is composed of rectangular channels and is well insulated from...
2. A thermal energy storage unit is composed of rectangular channels and is well insulated from outer surface. It encloses alternating layers and flow passages (shown using the arrows in the image below). Each layer of the storage material is an aluminum slab of width (thickness) W=0.05 m, which is at initial temperature of 25 °C. The storage unit is charged by passing a hot gas through the passages, with the gas temperature and convection coefficient assumed to have constant...
A heat recovery device involves transferring energy from the hot flue gases passing through an annular...
A heat recovery device involves transferring energy from the hot flue gases passing through an annular region to pressurized water flowing through the inner tube of the annulus. The inner tube has inner and outer diameters of 24 and 30 mm and is connected by 8 struts to an insulated outer tube of 65-mm diameter. Each strut is 3 mm thick and is integrally fabricated with the inner tube from carbon steel (k = 50 W/m-K). 71-1=3 mm D. D.2...
A heat recovery device involves transferring energy from the hot flue gases passing through an annular...
A heat recovery device involves transferring energy from the hot
flue gases passing through an annular region to pressurized water
flowing through the inner tube of the annulus. The inner tube has
inner and outer diameters of 24 and 30 mm and is connected by 8
struts to an insulated outer tube of 55-mm diameter. Each strut is
3 mm thick and is integrally fabricated with the inner tube from
carbon steel ( k = 50 W/m·K).
Consider conditions for...
Heat is transferred to a gas in a piston cylinder device so that the volume changes...
Heat is transferred to a gas in a piston cylinder device so that the volume changes from 3 mºto 6 m2. The initial pressure and temperature of the gas are 400 kPa and 25°C. If the process is irreversible determine the following: 1- The final temperature of the gas. 2- The work done during the process (kJ). 3- The total change in internal energy (kJ). 4- The heat transfer for the process (kJ). 5- The total entropy change (kJ/K). Comment...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa and 350K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kPa and volume is maintained at same. The boundary work done during this process is (a) 1080 kJ (b) 840 k (c)240 k 2. A heat engine receives heat from a source at 727°C and rejiects the waste heat to a sink at 27°C,...
A gas cylinder containing carbon dioxide, CO2, 85% by volume, and nitrogen, N2, 15% by volume...
A gas cylinder containing carbon dioxide, CO2, 85% by volume, and nitrogen, N2, 15% by volume has a volume of 2.2 m and is kept at a temperature of 20°C. You may assume the gas mixture is ideal. 0 Calculate the pressure in kPa in the cylinder when it contains 50 kg of gas. [2 marks] After a certain amount of gas has been used, the pressure decreases by 150 kPa. Calculate the mass of gas used. [2 marks] (b)...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as a Soave Redlich-Kwong gas and with CP = 100 J/(mol-K), from 300 K and 2 m² to 800 K and 0.02 m² by using less than 5 MJ of work. Is this possible?
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into halves by a separator. On one side of the separator is 1 m of air at 300 K, 2 bar. On the other side is 1 m of air at 500 K, 1 bar. The separator is removed, and the air from the two sides mixes and reaches equilibrium state Please treat the air as ideal gas with cp-1.001 kJ/kg K and c0.714 kJ/kg...
Answers are next to the problems.
2. A small, un-insulated closed cylinder with a freely moving piston contains air and is accidentally dropped into a lake and falls slowly to the bottom at 100 m below the surface Initially, the air in the cylinder is at atmospheric pressure of 100 kPa with a volume of 0.1 m3 and a temperature of 20°C. The lake is also at a uniform and constant temperature of 20°C. As the cylinder falls, the air...
2. A thermal energy storage unit is composed of rectangular channels and is well insulated from outer surface. It encloses alternating layers and flow passages (shown using the arrows in the image below). Each layer of the storage material is an aluminum slab of width (thickness) W=0.05 m, which is at initial temperature of 25 °C. The storage unit is charged by passing a hot gas through the passages, with the gas temperature and convection coefficient assumed to have constant...
A heat recovery device involves transferring energy from the hot flue gases passing through an annular region to pressurized water flowing through the inner tube of the annulus. The inner tube has inner and outer diameters of 24 and 30 mm and is connected by 8 struts to an insulated outer tube of 65-mm diameter. Each strut is 3 mm thick and is integrally fabricated with the inner tube from carbon steel (k = 50 W/m-K). 71-1=3 mm D. D.2...
A heat recovery device involves transferring energy from the hot
flue gases passing through an annular region to pressurized water
flowing through the inner tube of the annulus. The inner tube has
inner and outer diameters of 24 and 30 mm and is connected by 8
struts to an insulated outer tube of 55-mm diameter. Each strut is
3 mm thick and is integrally fabricated with the inner tube from
carbon steel ( k = 50 W/m·K).
Consider conditions for...
Heat is transferred to a gas in a piston cylinder device so that the volume changes from 3 mºto 6 m2. The initial pressure and temperature of the gas are 400 kPa and 25°C. If the process is irreversible determine the following: 1- The final temperature of the gas. 2- The work done during the process (kJ). 3- The total change in internal energy (kJ). 4- The heat transfer for the process (kJ). 5- The total entropy change (kJ/K). Comment...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa and 350K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kPa and volume is maintained at same. The boundary work done during this process is (a) 1080 kJ (b) 840 k (c)240 k 2. A heat engine receives heat from a source at 727°C and rejiects the waste heat to a sink at 27°C,...
A gas cylinder containing carbon dioxide, CO2, 85% by volume, and nitrogen, N2, 15% by volume has a volume of 2.2 m and is kept at a temperature of 20°C. You may assume the gas mixture is ideal. 0 Calculate the pressure in kPa in the cylinder when it contains 50 kg of gas. [2 marks] After a certain amount of gas has been used, the pressure decreases by 150 kPa. Calculate the mass of gas used. [2 marks] (b)...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
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