Figure P2.32 shows a cross-flow heat exchanger used to condense Freon-12. Freon-12 vapor enters the unit at a flow rate of 0.065 kg/s. Freon-12 leaves the exchanger as a liquid (Sp. Gr. = 1.915) at room temperature and pressure. Determine the exit velocity of the liquid.
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Figure P2.32 shows a cross-flow heat exchanger used to condense
Freon-12. Freon-12 vapor enters the unit...
3/ A LiBr-H2O absorption cooling system contains of one solution heat exchanger, generator, condense an evaporator,...
3/ A LiBr-H2O absorption cooling system contains of one solution heat exchanger, generator, condense an evaporator, and an absorber. The temperatures of the main components °C at condenser, 10 °C at evaporator, and 30 °C at absorber. The cooling capacity at the evaporator is are 100 °C at generator, 40 100 Ton, and the flow rate of the pump is 34.2 kg/min. And the temperature at outlet of heat exchanger and the inlet to the generator is 52 °C Find...
Please use the NTU method. I am having trouble. 2. A cross-flow heat exchanger with surface...
Please use the NTU method. I am having trouble.
2. A cross-flow heat exchanger with surface area A, , is desd with inlet conditions The = 350°C and T,,i = 20°C, and outlet condition Te,o-14°C. If hot air with miass flow mh = 2.2 -g is used to heat pressurized water flowing at mc = 0.6 kg, what is the overall heat transfer coefficient of the exchanger? The water remains in the liquid state and evaluate thermal properties of the...
In a produce chilling system, air is cooled by being passed over a heat exchanger coil througlh w...
Please use EES only.
In a produce chilling system, air is cooled by being passed over a heat exchanger coil througlh which R-134a flows steadily at a rate of 15 lbm/min. Prior to entering the heat exchanger coil, the refrigerant passes through a throttling valve as shown in the figure below. The R-134a enters the valve as a saturated liquid at high pressure (which will be varied) and leaves at 35 psia. The refrigerant leaves the heat exchanger coil as...
Condenser Compressor An ideal vapor-compression refrigeration cycle is modified to include a counter-flow heat exchanger as...
Condenser Compressor An ideal vapor-compression refrigeration cycle is modified to include a counter-flow heat exchanger as shown. Refrigerant 134a leaves the evaporator as saturated vapor at 0.10 MPa and is heated at constant pressure to 20°C before entering the compressor. Following isentropic compression to 1.4 MPa, the refrigerant passes through the condenser and exits at 45°C and 1.4 MPa. The liquid then passes through the heat exchanger and enters the expansion valve at 1.4 MPa. The mass flow rate of...
3. Figure shows NTU - e relation of a single pass, cross flow heat exchanger with one fluid mixed...
3. Figure shows NTU - e relation of a single pass, cross flow heat exchanger with one fluid mixed and the other unmixed. With the given NTU = 4 and-used-4, please find Cunmixed (1) Find Cr = cmax. (2) Find ε of this heat exchanger using this Chart; (3) Find of this heat exchanger using equation shown in Table 1 1.3 or 1 1.4 1.O O.8 O.6 1 1.33 0.75 2 O.5 4 0.25 Cmin mixed 0.4 O.2 max mixed...
A shell and tube heat exchanger with one shell pass and one tube pass will be...
A shell and tube heat exchanger with one shell pass and one tube pass will be used to condense the steam to saturated liquid, which enters the shell side as a saturated vapor at 400 K. The tube side contains R-134a refrigerant with an inlet temperature of 300 K and a mean velocity of 0.4 m/s. The steam flow rate is 1.5 kg/s. The tubes are made from AISI 302 stainless steel and have a 1" nominal diameter (Di =...
a radiator uses air to cool ethylene glycol (antifreeze) in a cross flow heat exchanger the...
a radiator uses air to cool ethylene glycol (antifreeze) in a cross flow heat exchanger the ethylene glycol(cp= 0.678) enters the radiator, as shown in figure 1 below, at 150 f with a flow rate of 5 ibm/s. it leaves the radiator at 80 f. air at 70 f blows over the radiator at a flow rate of 10000 cfm determine (a) the heat lost by the antifreeze , (b) the mass flow rate of the air in ibm/s and...
A shell and tube heat exchanger with one shell pass and one tube pass will be...
A shell and tube heat exchanger with one shell pass and one tube pass will be used to condense the steam to saturated liquid, which enters the shell side as a saturated vapor at 400 K. The tube side contains R-134a refrigerant with an inlet temperature of 300 K and a mean velocity of 0.4 m/s. The steam flow rate is 1.5 kg/s. The tubes are made from AISI 302 stainless steel and have a 1" nominal diameter (Di =...
A shell-and-tube heat exchanger similar to the one shown in the Figure below is used to...
A shell-and-tube heat exchanger similar to the one shown in the Figure below is used to recover energy from waste water at 40°C to heat fresh water entering at 18°C. The mass flow rate of the waste water is 4 kg/s which is the same as that of the fresh water. Using the data given, calculate: (i) the optimum rate of energy recovery; the required heat transfer area; (iii) the temperature of the fresh water at exit. Shell fluid inlet...
Problem 3 (20 points) A cross-flow heat exchanger consists of a bundle of 32 tubes in a long duct. Hot water at 150°C and a mean velocity of 0.5 m/s enters the tubes having inner and outer diameters...
Problem 3 (20 points) A cross-flow heat exchanger consists of a bundle of 32 tubes in a long duct. Hot water at 150°C and a mean velocity of 0.5 m/s enters the tubes having inner and outer diameters of 10.2mm and 12.5mm and has to be cooled to 136°C. The tubes are made of steel of thermal conductivity k-40 W/m.K. Air at 10°c enters the exchanger (unfinned) with a volumetric flow rate of 1.0 m3/s. The convective heat transfer coefficient...
3/ A LiBr-H2O absorption cooling system contains of one solution heat exchanger, generator, condense an evaporator, and an absorber. The temperatures of the main components °C at condenser, 10 °C at evaporator, and 30 °C at absorber. The cooling capacity at the evaporator is are 100 °C at generator, 40 100 Ton, and the flow rate of the pump is 34.2 kg/min. And the temperature at outlet of heat exchanger and the inlet to the generator is 52 °C Find...
Please use the NTU method. I am having trouble.
2. A cross-flow heat exchanger with surface area A, , is desd with inlet conditions The = 350°C and T,,i = 20°C, and outlet condition Te,o-14°C. If hot air with miass flow mh = 2.2 -g is used to heat pressurized water flowing at mc = 0.6 kg, what is the overall heat transfer coefficient of the exchanger? The water remains in the liquid state and evaluate thermal properties of the...
Please use EES only.
In a produce chilling system, air is cooled by being passed over a heat exchanger coil througlh which R-134a flows steadily at a rate of 15 lbm/min. Prior to entering the heat exchanger coil, the refrigerant passes through a throttling valve as shown in the figure below. The R-134a enters the valve as a saturated liquid at high pressure (which will be varied) and leaves at 35 psia. The refrigerant leaves the heat exchanger coil as...
Condenser Compressor An ideal vapor-compression refrigeration cycle is modified to include a counter-flow heat exchanger as shown. Refrigerant 134a leaves the evaporator as saturated vapor at 0.10 MPa and is heated at constant pressure to 20°C before entering the compressor. Following isentropic compression to 1.4 MPa, the refrigerant passes through the condenser and exits at 45°C and 1.4 MPa. The liquid then passes through the heat exchanger and enters the expansion valve at 1.4 MPa. The mass flow rate of...
3. Figure shows NTU - e relation of a single pass, cross flow heat exchanger with one fluid mixed and the other unmixed. With the given NTU = 4 and-used-4, please find Cunmixed (1) Find Cr = cmax. (2) Find ε of this heat exchanger using this Chart; (3) Find of this heat exchanger using equation shown in Table 1 1.3 or 1 1.4 1.O O.8 O.6 1 1.33 0.75 2 O.5 4 0.25 Cmin mixed 0.4 O.2 max mixed...
A shell-and-tube heat exchanger similar to the one shown in the Figure below is used to recover energy from waste water at 40°C to heat fresh water entering at 18°C. The mass flow rate of the waste water is 4 kg/s which is the same as that of the fresh water. Using the data given, calculate: (i) the optimum rate of energy recovery; the required heat transfer area; (iii) the temperature of the fresh water at exit. Shell fluid inlet...
Problem 3 (20 points) A cross-flow heat exchanger consists of a bundle of 32 tubes in a long duct. Hot water at 150°C and a mean velocity of 0.5 m/s enters the tubes having inner and outer diameters of 10.2mm and 12.5mm and has to be cooled to 136°C. The tubes are made of steel of thermal conductivity k-40 W/m.K. Air at 10°c enters the exchanger (unfinned) with a volumetric flow rate of 1.0 m3/s. The convective heat transfer coefficient...
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