Saturated steam at 1 atm condenses on a 3-m-high and 5-m-wide vertical plate that is maintained at 90 0C by circulating cooling water through the other side. Determined (a) the rate of heat transfer by condensation to the plate, and (b) the rate at which the condensate drips off the plate at the bottom (Please use the condensation formulations at the Geankoplis).

Saturated steam at 1 atm condenses on a 3-m-high and 5-m-wide vertical plate that is maintained at 90 0C by circulating cooling water through the other side. Determined (a) the rate of heat transfer by condensation to the plate, and (b) the rate at which the condensate drips off the plate at the bottom (Please use the condensation formulations at the Geankoplis).

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.34P

See similar textbooks

Similar questions

Saturated refrigerant-134a vapor at 34°C is to be condensed as it flows in a 1-cm-diameter tube at a rate of 0.1 kg/min. Determine the rate of heat transfer from the refrigerant. What would your answer be if the condensed refrigerant is cooled to 20°C?
Water is boiled at 250°F by a 2-ft-long and 0.5-in diameter nickel-plated electric heating element maintained at 280°F. Determine (a) the boiling heat transfer coefficient, (b) the electric power consumed by the heating element, and (c) the rate of evaporation of water.
Water is boiled at atmospheric pressure by a horizontal polished copper heating element of diameter D = 5 mm and emissivity ε = 0.05 immersed in water. If the surface temperature of the heating wire is 350°C, determine the rate of heat transfer from the wire to the water per unit length of the wire. The properties of water at the saturation temperature of 100°C are ρl= 957.9 kg/m3 , hfg = 2257.0×10^3J/kg, The properties of vapor at the film temperature ρv = 0.441 kg/m3 , µv = 1.73 × 10^-5 kg m/s , Cpv= 1977 J/kg °C, kv = = 0.0357 W/m °C Select one: a. 853 W b. 933 W c. 707 W d. 1953 W
the latent heat of vaporization is about 2.44 x 10⁶ J/kg and the density (density) of the vapor is 0.598 kg/m³ at 100 °C per km. Determine the rate of change of the boiling point with altitude approaching sea level in °C per km. It is known that the density of air at 0°C and 1 atm is 1.29 kg/m and the density of water is 1000 kg/m³. Assume the air temperature is 300°K. The change in pressure with altitude is given by the relationship P(z) = P(0)exp - (mgz)/(kT)
The normal boiling point of copper is 2845 K and its molar enthalpy of vvaporization is 300.3 kj/mol. What is the change in the entropy in the system when 127 g of copper vapor condenses to liquid at the normal boiling point? MW=63.5
Water in a tank is to be boiled at 143.27 Pa absolute pressure by a 1.5-cm-diameter brass heating element equipped with electrical resistance wires inside, as shown in the figure. Determine the maximum heat flux that can be attained in the nucleate boiling regime and the surface temperature of the heater in that case. (3.23x105 W/m2, 118.6°C)
Water is boiled at atmospheric pressure by a horizontal polished copper heating element of diameter D = 5 mm and emissivity ε = 0.05 immersed in water. If the surface temperature of the heating wire is 350°C, determine the heat flux from the wire to the water. The properties of water at the saturation temperature of 100°C are ρl= 957.9 kg/m3 , hfg = 2257.0×10^3J/kg, The properties of vapor at the film temperature ρv = 0.441 kg/m3 , µv = 1.73 × 10^-5 kg m/s , Cpv= 1977 J/kg °C, kv = = 0.0357 W/m °C Select one: a. 5.94 × 104 W/m2 b. 7.94 × 104 W/m2 c. 3.94 × 104 W/m2 d. 1.94 × 104 W/m2
The condenser of a steam power plant operates at a pressure of 7.38 kPa (Tsat = 40°C). Steam at this pressure condenses on the outer surfaces of horizontal pipes through which cooling water circulates. The outer diameter of the pipes is 3 cm, and the outer surfaces of the pipes are maintained at 30°C. Determine the rate of condensation of steam per unit length of a horizontal pipe. The properties of water at the saturation temperature of 40°C are: hfg = 2407 × 10^3J/kg and ρv=0.05 kg/m3. The properties of liquid water at the film temperature: ρl = 994 kg/m3, Cpl =4178 J/kg°C, µl = 0.72 × 10^-3 kg/m.s, kl = 0.623 W/m°C Select one: a. 0.0026 kg/s b. 0.0046 kg/s c. 0.0016 kg/s d. 0.0036 kg/s
Water is boiled at atmospheric pressure in a square (0.2 m x 0.2 m) pan placed on top of a heating unit. Pan is made of polished copper and the surface tension of liquid-vapor interaction is 0.06 N/m. The coefficient Ccr is 0.15. What should be the maximum bottom surface temperature of the pan for safe operation? Properties of water: ρl=960 kg/m3 ρv=0.6 kg/m3 μl=0.3x10-3 kg/ms cpl=4200 J/kgK Prl=2 hfg=2257x103 J/kg
Only answer if you are 100% sure otherwise i will downvote... An ASTM B75 copper tube sheathes a heating element that is used to boil water at 1254 kPa. The copper tube is immersed horizontally in the water, and its surface is polished. The tube diameter and length are 5 mm and 9.5 cm, respectively. The maximum use temperature for ASTM B75 copper tube is 204°C. Determine the highest evaporation rate of water that can be achieved by the heater without heating the tube surface above the maximum use temperature. Use the property tables to calculate the properties of water at saturation temperature. The surface tension 0 at 190°C is 0.03995 N/m. Also, Csf 0.0130 and 10 for the boiling water on a polished copper surface. The highest evaporation rate of water is g/s?
How does a boiling process at supercritical pressures differ from the boiling process at subcritical pressures?
Reconsider Prob. 11–122. Using EES (or other) software, investigate the effects of the condensing steam temperature and the tube diameter on the rate of heat transfer and the rate of condensation of steam. Let the steam temperature vary from 20°C to 70°C and the tube diameter from 1.0 cm to 2.0 cm. Plot the rate of heat transfer and the rate of condensation as functions of steam temperature and tube diameter, and discuss the results. Prob Steam is to be condensed on the shell side of a 1-shellpass and 8-tube-passes condenser, with 50 tubes in each pass, enters the tubes at 15°C at a rate of 1800 kg/h. The tubes are thin-walled, and have a diameter of 1.5 cm and length of 2 m per pass. If the overall heat transfer coefficient is 3000 W/m2 .K, determine (a) the rate of heat transfer and (b) the rate of condensation of steam.