Saturate steam at 0.51 bars is condensed over a square array of 225 tubes each of...
Saturate steam at 0.51 bars is condensed over a square array of 225 tubes each of diameter of 1.27 cm - OD. If the tube surfaces are maintained at 72ºC:
(a) Use three different correlations to find the required heat transfer coefficient.
(b) Calculate the total steam condensation rate per unit tube length.
Hint: Use the average value [(small +large) /2] of heat transfer coefficient in your analysis.
Tabulate your result of heat transfer coefficient
draw a clear schematic
use a good equation
Homework Answers
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Saturate steam at 0.51 bars is condensed over a square array of
225 tubes each 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...
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)...
turbine as saturated vapor at 0.51 be liquid watr The steam is con id by passing it over the tu densed to saturate...
turbine as saturated vapor at 0.51 be liquid watr The steam is con id by passing it over the tu densed to saturated liquid by passing it e steame a shell-and-tube heat exchanger, while lia tubes of 11.76 In a Rankine power system, 1.5 kg/s of having an inlet temperature of T280k uid Wale h the tubes. The condenser contains 100 t%ae and the total 5 kg/s. The aver- is passed throug water flow rate through the tubes is 15...
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....
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer...
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are maintained at a temperature of 120°C. Circular aluminum alloy fins (k = 180 W/m.) of outer diameter 6 cm and constant thickness t 2 mm are attached to the tube, as shown in the figure below. The space between the fins is 3 mm, and thus there are 200 fins per meter length of the tube....
Thin-walled aluminum tubes of diameter D = 10 mm are used in the condenser of an air conditioner....
Thin-walled aluminum tubes of diameter D = 10 mm are used in the condenser of an air conditioner. Under normal operating conditions, a convection coefficient of hi = 5000 W/m2 · K is associated with condensation on the inner surface of the tubes, while a coefficient of ho = 100 W/m2 · K is maintained by airflow over the tubes. a. What is the overall heat transfer coefficient if the tubes are unfinned? b. What is the overall heat transfer...
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...
3.2A horizontal 4-inch outer diameter (OD) tube is surrounded by saturated steam at 2 psia. The...
3.2A horizontal 4-inch outer diameter (OD) tube is surrounded by saturated steam at 2 psia. The tube is maintained at 64°F. What is the average heat-transfer coefficient. Assume filmwise condensation and laminar flow. Use SI units during your calculations. (12) NB: Table for properties for saturated steam: Properties of saturated water Volume Expansion ent Enthalpy Specific Thermal Prandt en Dynamic Density C ity Nu Hea me Pressure Vaporization emp. P kPa Liquid Vapor A kkg Liquid Vapor Liquid Vapor Liquid...
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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)...
turbine as saturated vapor at 0.51 be liquid watr The steam is con id by passing it over the tu densed to saturated liquid by passing it e steame a shell-and-tube heat exchanger, while lia tubes of 11.76 In a Rankine power system, 1.5 kg/s of having an inlet temperature of T280k uid Wale h the tubes. The condenser contains 100 t%ae and the total 5 kg/s. The aver- is passed throug water flow rate through the tubes is 15...
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....
6. Problem 3 (20 points): A Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are maintained at a temperature of 120°C. Circular aluminum alloy fins (k = 180 W/m.) of outer diameter 6 cm and constant thickness t 2 mm are attached to the tube, as shown in the figure below. The space between the fins is 3 mm, and thus there are 200 fins per meter length 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...
3.2A horizontal 4-inch outer diameter (OD) tube is surrounded by saturated steam at 2 psia. The tube is maintained at 64°F. What is the average heat-transfer coefficient. Assume filmwise condensation and laminar flow. Use SI units during your calculations. (12) NB: Table for properties for saturated steam: Properties of saturated water Volume Expansion ent Enthalpy Specific Thermal Prandt en Dynamic Density C ity Nu Hea me Pressure Vaporization emp. P kPa Liquid Vapor A kkg Liquid Vapor Liquid Vapor Liquid...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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