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1 points QUESTION 13 Air is to be heated by passing it over a bank of...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square,...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (NL = NT = 20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of SL = 60 mm and ST-42 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of Ts - 390 K may be assumed to be maintained as condensation occurs...
Write the solution of the maximum Reynolds number of the flow passing over the tube bundle...
Write the solution of the maximum Reynolds number of the flow
passing over the tube bundle here.
(b) Estimate the average Nusselt number of the flow passing over
the tube bundle. (choose the closest answer)
Write the solution of the average Nusselt number of the flow
passing over the tube bundle here
(c) Estimate the number of required transverse rows. (choose the
closest answer)
Write the solution of the number of required transverse rows
here.
Question 13 (5 points) We...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank of brass tubes inside which steam at 100ºC is condensing (hed = 5680. The tubes (L-0.61 m, D.-1.27 cm, & wall thickness d=0.125 cm) are arranged in-line in a square pattern with a pitch of 1.9 cm inside a rectangular shell (0.61 m wide, 38 cm high). If the total mass flow rate of air is 4 kg/s, calculate the following parameters. Brass tubes...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank of brass tubes inside which steam at 100°C is condensing (c4 = 5680). The tubes (L=0.61 m, D.-1.27 cm, & wall thickness d=0.125 cm) are arranged in-line in a square pattern with a pitch of 1.9 cm inside a rectangular shell (0.61 m wide, 38 cm high). If the total mass flow rate of air is 4 kg/s, calculate the following parameters. Brass tubes...
QUESTION 3 Air at atmospheric pressure flows with an inlet velocity of 1 m/s across a...
QUESTION 3 Air at atmospheric pressure flows with an inlet velocity of 1 m/s across a bank of tubes 10 rows deep in the direction of flow. The tubes have an outside diameter of 10 mm and are arranged in a staggered manner with a longitudinal pitch of Si-15 mm and a transverse pitch of ST- 15 mm. The surface temperature of the tubes is maintained at 77°C by hot water flowing in the tubes. Determine the mean heat transfer...
O 20.34 w QUESTION 15 15-20 Water at 15°C is to be heated to 55 C by passing it over a bundle of 4m 1 ng 1㎝ diameter resistance heater rods man tained at 90c water approaches the heater rod bun...
O 20.34 w QUESTION 15 15-20 Water at 15°C is to be heated to 55 C by passing it over a bundle of 4m 1 ng 1㎝ diameter resistance heater rods man tained at 90c water approaches the heater rod bundle in normal direction at a mean velocity of 09 m/s. The rods arc arranged in-line with longitudinal and transverse pitches 4 cm and 3 cm respectively. Assume NL > 16. use k-О631 wm.к, o-992. 1 kg/m3. Cp-41 79JAg K,...
A bank of tubes is made of copper tubes. There are 20 rows of tubes in...
A bank of tubes is made of copper tubes. There are 20 rows of tubes in the flow direction set in staggered fashion with 15 cm longitudinal spacing and 10 cm transferred spacing. Each raw consist of 15 tubes, 1.5 m long. This bank is used to condense saturated steam at 120 °C, which passes through 2 ½ SCH 40 tubes. The steam heat transfer coefficient is 10000 W/m2.K. Water at 10 °C and 0.15 m/s is supplied to flow...
please show work thank you An air-cooled steam condenser is operated with air in cross flow...
please show work thank you
An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (NL=NT-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of SL-60 mm and ST = 63 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of Ts=390 K may be assumed to be maintained as condensation occurs within the tubes....
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (N N-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of s 60 mm and sr 84 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of T,-390 K may be assumed to be maintained as condensation occurs tudy ithin the tubes. (a)...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1 m/s. This plate has a length L= 1 m and it is heated over its entire length; the plate temperature is constant Tp=100°C. The following data are given. For air: dynamic viscosity: mu = 1.9*10–5 kg/(m.s); density: rho = 1.05 kg/m3; conductivity k = 0.03 W/(m K); Specific heat Cp = 1.007 kJ/(kg K); Prandtl number Pr = 0.7 For laminar flow over a...
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (NL = NT = 20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of SL = 60 mm and ST-42 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of Ts - 390 K may be assumed to be maintained as condensation occurs...
Write the solution of the maximum Reynolds number of the flow
passing over the tube bundle here.
(b) Estimate the average Nusselt number of the flow passing over
the tube bundle. (choose the closest answer)
Write the solution of the average Nusselt number of the flow
passing over the tube bundle here
(c) Estimate the number of required transverse rows. (choose the
closest answer)
Write the solution of the number of required transverse rows
here.
Question 13 (5 points) We...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank of brass tubes inside which steam at 100ºC is condensing (hed = 5680. The tubes (L-0.61 m, D.-1.27 cm, & wall thickness d=0.125 cm) are arranged in-line in a square pattern with a pitch of 1.9 cm inside a rectangular shell (0.61 m wide, 38 cm high). If the total mass flow rate of air is 4 kg/s, calculate the following parameters. Brass tubes...
We want to increase the air temperature from 14.4°C to 30°C by passing over a bank of brass tubes inside which steam at 100°C is condensing (c4 = 5680). The tubes (L=0.61 m, D.-1.27 cm, & wall thickness d=0.125 cm) are arranged in-line in a square pattern with a pitch of 1.9 cm inside a rectangular shell (0.61 m wide, 38 cm high). If the total mass flow rate of air is 4 kg/s, calculate the following parameters. Brass tubes...
QUESTION 3 Air at atmospheric pressure flows with an inlet velocity of 1 m/s across a bank of tubes 10 rows deep in the direction of flow. The tubes have an outside diameter of 10 mm and are arranged in a staggered manner with a longitudinal pitch of Si-15 mm and a transverse pitch of ST- 15 mm. The surface temperature of the tubes is maintained at 77°C by hot water flowing in the tubes. Determine the mean heat transfer...
O 20.34 w QUESTION 15 15-20 Water at 15°C is to be heated to 55 C by passing it over a bundle of 4m 1 ng 1㎝ diameter resistance heater rods man tained at 90c water approaches the heater rod bundle in normal direction at a mean velocity of 09 m/s. The rods arc arranged in-line with longitudinal and transverse pitches 4 cm and 3 cm respectively. Assume NL > 16. use k-О631 wm.к, o-992. 1 kg/m3. Cp-41 79JAg K,...
please show work thank you
An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (NL=NT-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of SL-60 mm and ST = 63 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of Ts=390 K may be assumed to be maintained as condensation occurs within the tubes....
Problem 7.075 An air-cooled steam condenser is operated with air in cross flow over a square, in-line array of 400 tubes (N N-20), with an outside tube diameter of 20 mm and longitudinal and transverse pitches of s 60 mm and sr 84 mm, respectively. Saturated steam at a pressure of 2.455 bars enters the tubes, and a uniform tube outer surface temperature of T,-390 K may be assumed to be maintained as condensation occurs tudy ithin the tubes. (a)...
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