rh not O Trot = 75°C %3D Tout-? hcold O Teota = 18°C %3D Hot and cold stream of water are mixing together as shown in Figure. The temperature of the hot and cold streams at the inlet are 75 °C and 18 °C, respectively. Mass flow rates of the hot and the cold streams are (1.5000x10^-1) kg and (3.00x10^-1) kg, respectively. Find the temperature of the mixed stream. The specific heat of the hot water stream is 4000 J/kg-K and the cold stream is 3800 J/kg-K. Answer should be in °C with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible.

rh not O Trot = 75°C %3D Tout-? hcold O Teota = 18°C %3D Hot and cold stream of water are mixing together as shown in Figure. The temperature of the hot and cold streams at the inlet are 75 °C and 18 °C, respectively. Mass flow rates of the hot and the cold streams are (1.5000x10^-1) kg and (3.00x10^-1) kg, respectively. Find the temperature of the mixed stream. The specific heat of the hot water stream is 4000 J/kg-K and the cold stream is 3800 J/kg-K. Answer should be in °C with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.33P

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Mnot D Thot = 75°C Tout-? mcold Tcold = 18°C Hot and cold stream of water are mixing together as shown in Figure. The temperature of the hot and cold streams at the inlet are 75 °C and 18 °C, respectively. Mass flow rates of the hot and the cold streams are (1.500x10^-1) kg and (1.00x10^-1) kg, respectively. Find the temperature of the mixed stream. The specific heat of the hot water stream is 4000 J/kg- K and the cold stream is 3800 J/kg-K. Answer should be in °C with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible.
mnot Thot = 75°C Tout-? mcold Tcotd = 18°C -- Hot and cold stream of water are mixing together as shown in Figure. The temperature of the hot 6. and cold streams at the inlet are 75 °C and 18 °C, respectively. Mass flow rates of the hot and the -- cold streams are (5.0000x10^-2) kg and (1.00x10^-1) kg, respectively. Find the temperature of the mixed stream. The specific heat of the hot water stream is 4000 J/kg-K and the cold stream is 3800 J/kg-K. Answer should be in °C with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer DELL F5 F7 F9 F10 F11 F12 PrtScr Delete F6 F8 Insert
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Q=2000J Vout =? m (kg/s) D=0.1m air Air at (4.65x10^2) K flows out of a circular pipe at 101325 Pa as shown in Figure. The mass flowrate of the air at the pipe entrance is 0.0093 kg/s. The diameter of the pipe is 0.1m. Specific gas constant of air is 287 J/kg-K. Specific heat of air is 1000 J/kg-K. Find the outlet Velocity if 2000 J of heat is added to the pipe. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
Q=2000J =? out m (kg/s) D=0.1m air Air at (4.75x10^2) K flows out of a circular pipe at 101325 Pa as shown in Figure. The mass flowrate of the air at the pipe entrance is 0.0093 kg/s. The diameter of the pipe is 0.1m. Specific gas constant of air is 287 J/kg-K. Specific heat of air is 1000 J/kg-K. Find the outlet Velocity if 2000 J of heat is added to the pipe. Answer should be in m/s with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible.
1- For flow of a compressible fluid from a storage tank through a converging-diverging channel operating under Choked conditions O(a) The pressure at the exit will be equal to the sonic pressure O (b) The flow in the diverging section must be supersonic (c) The mass flow rate through the channel cannot be increased by changing the storage tank conditions (d) none of the above
A reservoir of volume V with an ideal gas of molecular mass M and specific heat ratio k is initially at pressure p1 and temperature T1. The reservoir then begins to be supplied at constant flow m˙ and with the same gas, at the inlet temperature given by Te , also constant. (a) Calculate the time required for the final mass of the reservoir to increase by 4 times (m2 = 4m1); (b) Assuming the process is isothermal, calculate the time required for the pressure to from the reservoir increases by 4 times (p2 = 4p1), and calculate the rate at which heat is removed from the reservoir. reservoir Q˙ r ; (c) Assuming that the process is adiabatic, calculate the time required for the pressure of the reservoir increases by 4 times (p2 = 4p1). Calculate the final temperature T2 for this situation.
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4. An experimental test rig is used to examine two-phase flow regimes in horizontal pipelines. A particular experiment involved uses air and water at a temperature of 25°C, which flow through a horizontal glass tube with an internal diameter of 25.4 mm and a length of 40 m. Water is admitted at a controlled rate of 0.026 kgs¹ at one end and air at a rate of 5 x 104 kgs-¹ in the same direction. The density of water is 1000 kgm 3, and the density of air is 1.2 kgm 3. Determine the mass flow rate, the mean density, gas void fraction, and the superficial velocities of the air and water. Answer: 0.02605 kgs-¹, 61.1 kgm-³, 0.94, 0.822 ms-¹, 0.051 ms-¹
4. An experimental test rig is used to examine two-phase flow regimes in horizontal pipelines. A particular experiment involved uses air and water at a temperature of 25°C, which flow through a horizontal glass tube with an internal diameter of 25.4 mm and a length of 40 m. Water is admitted at a controlled rate of 0.026 kgs-¹ at one end and air at a rate of 5 x 104 kgs¹ in the same direction. The density of water is 1000 kgm3, and the density of air is 1.2 kgm-³. Determine the mass flow rate, the mean density, gas void fraction, and the superficial velocities of the air and water. Answer: 0.02605 kgs-1, 61.1 kgm ³, 0.94, 0.822 ms-1, 0.051 ms-1
Q=2000J 111111 Vout =? m (kg/s) D=D0.1m air Air at (5.00x10^2) K flows out of a dcular pipe at 101325 Pa as shown in Figure. The mass flowrate of the air at the pipe entrance is 0.0093 kg/s. The diameter of the pipe is 0.1m. Specific gas constant of air is 287 J/kg-K. Specific heat of air is 1000 J/kg-K. Find the outlet Velocity if 2000 J of heat is added to the pipe. Answer should be in m/s with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Acti Go to x10 Answer W 9°C 2020
Define the Under steady-flow conditions?