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An air-cooled steam condenser is operated with air in cross flow...
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...
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)...
please show work 5/10 5 View Policies Show Attempt History An experiment is designed to study...
please show work
5/10 5 View Policies Show Attempt History An experiment is designed to study microscale forced convection. Water at Tm. i - 300 K is to be heated in a straight, circular glass tube with a 60-um inner diameter and a wall thickness of 3 mm. Warm water at Too - 350 K, V - 2 m/s is in cross flow over the exterior tube surface. The experiment is to be designed to cover the operating range 15...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has an electrical resistance of Relec' = 2.636 x 109/m and carries a current of 700 A. The line is subjected to frequent and severe cross winds, increasing the probability of contact between adjacent lines, thereby causing sparks and creating a potential fire hazard for nearby vegetation. The remedy is to insulate the line, but with the adverse effect of increasing the conductor operating temperature....
please show work = The use of rock pile thermal energy storage systems has been considered...
please show work
= The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications. A particular system involves a cylindrical container, 2 m long by 1 m in diameter, in which nearly spherical rocks of 0.03-m diameter are packed. The bed has a void space of 0.42, and the density and specific heat of the rock are p = 2300 kg/m and cp = 879 J/kg-K, respectively. Consider conditions for...
please show work = To cool a summer home without using a vapor-compression refrigeration cycle, air...
please show work
= To cool a summer home without using a vapor-compression refrigeration cycle, air is routed through a plastic pipe (k = 0.15 W/m-K, Di -0.15 m, Do-0.17 m) with a smooth interior surface that is submerged in an adjoining body of water. The water temperature is nominally at Too = 17°C, and a convection coefficient of ho- 1500 W/m2K is maintained at the outer surface of the pipe. Air from the home enters the pipe at a...
The condenser of a large steam power plant is a heat exchanger in which steam is...
The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a shell-and-tube heat exchanger consisting of a single shell and 30,000 tubes, each executing two passes (see figure below). The tubes are of thin wall construction with D=25mm, and steam condenses on their outer surface with an associated convection coefficient ho=11,000W/ m K The heat transfer rate that must be effected by the heat exchanger...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a parallel flow shell-and-tube heat exchanger consisting of a single shell and 1x10 tubes, each executing two passes. The inner diameter of tubes is D = 50 mm and its thickness is 5 mm (Do not ignore the thickness). The steam condenses on their outer surface. Thermal conductivity of the tube...
Problem 3. (25 points) In a Rankine power system, 1.5 kg/s of steam leaves the turbine...
Problem 3. (25 points) In a Rankine power system, 1.5 kg/s of steam leaves the turbine as saturated vapor at 0.51 bar. The steam is condensed to saturated liquid by passing it over the tubes of a shell-and-tube heat exchanger, while liquid water, having an inlet temperature of T = 280 K, is passed through the tubes. The condenser contains 100 thin-walled tubes, each of 10-mm diameter, and the total water flow rate through the tubes is 15 kg/s. The...
An air cooled automotive condenser is to transfer 5 kW to an air flow with velocity...
An air cooled automotive condenser is to transfer 5 kW to an air flow with velocity of 10 m/s entering at 30 oC and leaving at 34 oC. The heat transfer coefficient of R-134a is 400 W/m2 k. The tubes are copper and are 15mm I.D. and 17mm O.D. The evaporating temperature is 5 oC, and the condensing temperature is 40 oC. What is the required airside area? Kcopper= 390 W/m. k
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...
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)...
please show work
5/10 5 View Policies Show Attempt History An experiment is designed to study microscale forced convection. Water at Tm. i - 300 K is to be heated in a straight, circular glass tube with a 60-um inner diameter and a wall thickness of 3 mm. Warm water at Too - 350 K, V - 2 m/s is in cross flow over the exterior tube surface. The experiment is to be designed to cover the operating range 15...
View Policies Show Attempt History An aluminum transmission line with a diameter of 20 mm has an electrical resistance of Relec' = 2.636 x 109/m and carries a current of 700 A. The line is subjected to frequent and severe cross winds, increasing the probability of contact between adjacent lines, thereby causing sparks and creating a potential fire hazard for nearby vegetation. The remedy is to insulate the line, but with the adverse effect of increasing the conductor operating temperature....
please show work
= The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications. A particular system involves a cylindrical container, 2 m long by 1 m in diameter, in which nearly spherical rocks of 0.03-m diameter are packed. The bed has a void space of 0.42, and the density and specific heat of the rock are p = 2300 kg/m and cp = 879 J/kg-K, respectively. Consider conditions for...
please show work
= To cool a summer home without using a vapor-compression refrigeration cycle, air is routed through a plastic pipe (k = 0.15 W/m-K, Di -0.15 m, Do-0.17 m) with a smooth interior surface that is submerged in an adjoining body of water. The water temperature is nominally at Too = 17°C, and a convection coefficient of ho- 1500 W/m2K is maintained at the outer surface of the pipe. Air from the home enters the pipe at a...
The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a shell-and-tube heat exchanger consisting of a single shell and 30,000 tubes, each executing two passes (see figure below). The tubes are of thin wall construction with D=25mm, and steam condenses on their outer surface with an associated convection coefficient ho=11,000W/ m K The heat transfer rate that must be effected by the heat exchanger...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a parallel flow shell-and-tube heat exchanger consisting of a single shell and 1x10 tubes, each executing two passes. The inner diameter of tubes is D = 50 mm and its thickness is 5 mm (Do not ignore the thickness). The steam condenses on their outer surface. Thermal conductivity of the tube...
Problem 3. (25 points) In a Rankine power system, 1.5 kg/s of steam leaves the turbine as saturated vapor at 0.51 bar. The steam is condensed to saturated liquid by passing it over the tubes of a shell-and-tube heat exchanger, while liquid water, having an inlet temperature of T = 280 K, is passed through the tubes. The condenser contains 100 thin-walled tubes, each of 10-mm diameter, and the total water flow rate through the tubes is 15 kg/s. The...
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