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5 pts In a bath, cold water at 60°F flowing at a rate of 4 Ibm/min...
1 pts In a shower, cold water at 10 °C flowing at a rate of 5...
1 pts In a shower, cold water at 10 °C flowing at a rate of 5 kg/min is mixed with hot water at 60°C Powing at a rate of 2 kg/min. The exit temperature, Inc. of the mixture is: 14.1 19.3 30.3 32.0 24.3 26.4 28.0 34.3
Question 12 1 pts In a shower, cold water at 10 °C flowing at a rate...
Question 12 1 pts In a shower, cold water at 10 °C flowing at a rate of 5 kg/min is mixed with hot water at 60°C flowing at a rate of 2 kg/min. The exit temperature, in °C, of the mixture is: 14.1 19.3 30.3 320 24.3 26.4 28.0 343
Introduction Question 41-45 are based on the information provided here. Air enters a counter-flow heat exchanger...
Introduction Question 41-45 are based on the information provided here. Air enters a counter-flow heat exchanger at a rate of 5000 cubie feet per minute and at a temperature of 50°F and pressure of 14.7 psi. The air is heated by hot water flowing through the same heat exchanger at a rate of 11,200 Ib/sec with a decrease in the hot water temperature of 10°F. ÍC Air = 0.24 Btu/lbm-R, Cwaterー1.0 Btu/Ibm . R, Riir-53.35 ft-lbnom . R1 41. The...
Hot water flows thorough a parallel flow heat exchanger at a rate of 10 kg/min and...
Hot water flows thorough a parallel flow heat exchanger at a rate of 10 kg/min and is cooled by a cold water stream of flow rate 25 kg/min. The inlet temperatures of hot and cold water streams are 70 oC and 25 oC, respectively. The outlet temperature of the hot water is expected to be 50 oC. The individual convective heat transfer coefficient on both sides of the heat transfer area is 600 W/m2 .K. Take the specific heat for...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at 12 °C entering at a rate of 4 kg/s by hot water entering at 95°C at rate of 2.5 kg/s. The specific heat of water is C_w 4.18 kJ/kg- C. If the exit temperature of hot water is 50 °C, the exit temperature of cold water is O 50 °C 90 °C 95 °C 57 °C 40 °C
2. (60 points) Water that is flowing in a pipe at 25 psia and 200 °F...
2. (60 points) Water that is flowing in a pipe at 25 psia and 200 °F at a rate of 1900 lbm/hr (state 1), cools down to 20 psia and 110 °F (state 2). Then it is mixed with a stream of water at a rate of 1000 lbm/hr at 20 psia and 240 °F (state 3). The mixing process is constant pressure (P2=P;-P) and adiabatic. Find the heat transfer rate from the water (0) and final enthalpy and temperature...
Cooling water available at 680F is flowing through 1 in diameter tube at a rate of...
Cooling water available at 680F is flowing through 1 in diameter tube at a rate of 62000 lb/hr to cool 7000 lb/hr of a lube oil from 200 to 1000F. The specific heat of the lube is 0.62 Btu/lbm oF and viscosity is 5 cp, thermal conductivity is 0.067 Btu/ft-hr °F. The overall heat transfer coefficient is 35 Btu/ft? hr of. It is considered for a single pass exchanger with 44 tubes are requires. a. Draw a schematic diagram of...
1 pts Cold water at 10°C flowing a rate of 2 kg/s is heated to 35°C...
1 pts Cold water at 10°C flowing a rate of 2 kg/s is heated to 35°C inside a heat exchanger by saturated steam. The steam enters the heat exchanger as saturated vapor at 100 kPa and leaves as saturated liquid at the same pressure. The heat exchanger losses heat at a rate of 20 KW. The mass flow rate of the steam is most nearly: 0.185 0.101 0.748 0.548 0.312 0.243 0.443 0.085
A pump is used to circulate hot water in a home heating system. Water enters the...
A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 lbf/in.2, and 180°F, respectively; at the exit the pressure is 90 lbf/in.2 The pump requires 1/15 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 Btu/lb · °R. Neglecting kinetic...
system, hot water at an average temperature of 80°C is flowing through a 15-m section of...
system, hot water at an average temperature of 80°C is flowing through a 15-m section of a cast In a heating iron pipe (k 50 W/m K) whose inner and outer diameters are 4 cm and 5 cm, respectively. The outer surface of the pipe, whose emissivity is 0.75, is exposed to the cold air at 10°C in the basement. with a heat transfer coefficient of 15 W/m2.K. The heat transfer coefficient at the inner surface of the pipe is...
1 pts In a shower, cold water at 10 °C flowing at a rate of 5 kg/min is mixed with hot water at 60°C Powing at a rate of 2 kg/min. The exit temperature, Inc. of the mixture is: 14.1 19.3 30.3 32.0 24.3 26.4 28.0 34.3
Question 12 1 pts In a shower, cold water at 10 °C flowing at a rate of 5 kg/min is mixed with hot water at 60°C flowing at a rate of 2 kg/min. The exit temperature, in °C, of the mixture is: 14.1 19.3 30.3 320 24.3 26.4 28.0 343
Introduction Question 41-45 are based on the information provided here. Air enters a counter-flow heat exchanger at a rate of 5000 cubie feet per minute and at a temperature of 50°F and pressure of 14.7 psi. The air is heated by hot water flowing through the same heat exchanger at a rate of 11,200 Ib/sec with a decrease in the hot water temperature of 10°F. ÍC Air = 0.24 Btu/lbm-R, Cwaterー1.0 Btu/Ibm . R, Riir-53.35 ft-lbnom . R1 41. The...
D Question 1 1 pts An adiabatic heat exchanger is used to heat cold water at 12 °C entering at a rate of 4 kg/s by hot water entering at 95°C at rate of 2.5 kg/s. The specific heat of water is C_w 4.18 kJ/kg- C. If the exit temperature of hot water is 50 °C, the exit temperature of cold water is O 50 °C 90 °C 95 °C 57 °C 40 °C
2. (60 points) Water that is flowing in a pipe at 25 psia and 200 °F at a rate of 1900 lbm/hr (state 1), cools down to 20 psia and 110 °F (state 2). Then it is mixed with a stream of water at a rate of 1000 lbm/hr at 20 psia and 240 °F (state 3). The mixing process is constant pressure (P2=P;-P) and adiabatic. Find the heat transfer rate from the water (0) and final enthalpy and temperature...
Cooling water available at 680F is flowing through 1 in diameter tube at a rate of 62000 lb/hr to cool 7000 lb/hr of a lube oil from 200 to 1000F. The specific heat of the lube is 0.62 Btu/lbm oF and viscosity is 5 cp, thermal conductivity is 0.067 Btu/ft-hr °F. The overall heat transfer coefficient is 35 Btu/ft? hr of. It is considered for a single pass exchanger with 44 tubes are requires. a. Draw a schematic diagram of...
1 pts Cold water at 10°C flowing a rate of 2 kg/s is heated to 35°C inside a heat exchanger by saturated steam. The steam enters the heat exchanger as saturated vapor at 100 kPa and leaves as saturated liquid at the same pressure. The heat exchanger losses heat at a rate of 20 KW. The mass flow rate of the steam is most nearly: 0.185 0.101 0.748 0.548 0.312 0.243 0.443 0.085
system, hot water at an average temperature of 80°C is flowing through a 15-m section of a cast In a heating iron pipe (k 50 W/m K) whose inner and outer diameters are 4 cm and 5 cm, respectively. The outer surface of the pipe, whose emissivity is 0.75, is exposed to the cold air at 10°C in the basement. with a heat transfer coefficient of 15 W/m2.K. The heat transfer coefficient at the inner surface of the pipe is...
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