Question

In: Mechanical Engineering

Saturated steam condenses at the surface of a 200 mm pipe with the length of 2...

Saturated steam condenses at the surface of a 200 mm pipe with the length of 2 m and temperature of 90 C. Find the rate of heat transfer and total condensation rate if the pressure is atmospheric. B)The bottom of a copper pan, 100 mm in diameter, is maintained at 109°C by the heating element of an electric range. Estimate the power required to boil the water in this pan. Determine the evaporation rate. What is the ratio of the surface heat flux to the critical heat flux? What pan temperature is required to achieve the critical heat flux?

Solutions

Expert Solution


Related Solutions

Steam enters a horizontal 15-cm-diameter pipe as a saturated vapor at 5 bar with a velocity...
Steam enters a horizontal 15-cm-diameter pipe as a saturated vapor at 5 bar with a velocity of 10 m/s and exits at 4.5 bar with a quality of 95%. Heat transfer from the pipe to the surroundings at 300K takes place at an average outer surface temperature of 400 K. For operation at steady state, determine (a) the velocity at the exit, in m/s. (b) the rate of heat transfer from the pipe, in kW. (c) the rate of entropy...
Steam is compressed to a saturated vapor state at constant pressure. The steam started at 2...
Steam is compressed to a saturated vapor state at constant pressure. The steam started at 2 MPa and 365 C. What work was required and what was the specific heat transfer? Please show work so I can actually learn!
A pipe, 900 m long and 200 mm in diameter discharges water to the atmosphere at...
A pipe, 900 m long and 200 mm in diameter discharges water to the atmosphere at a point 10 m below the inlet level. With an inlet pressure of 40 kPa gauge, the flow rate is 40 litres/sec. At a point half way between the pipe inlet and outlet, a new tapping is made from which water is taken at a rate of 18 litres/sec. To what value must the inlet pressure be raised in order to maintain the same...
Plot the head loss in a 500 m long 200 mm cast iron pipe for the...
Plot the head loss in a 500 m long 200 mm cast iron pipe for the following flow rates; 0.001, 0.01, 0.1, and 1 m3/s. Use (a) the Moody Diagram and (b) the Swamee-Jain equation to find the friction factor and (c) the Hazen-Williams Eq. Discuss why the losses are similar or different for parts a and c
A microscope with a tube length of 200 mm achieves a total magnification of 400
A microscope with a tube length of 200 mm achieves a total magnification of 400
A mixture of saturated liquid water and saturated steam at T = 120 °C has a...
A mixture of saturated liquid water and saturated steam at T = 120 °C has a specific enthalpy of 2000 kJ⁄kg. What is the quality of this mixture? if you could show how to do it, that'd be great.
A 147-g sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools,...
A 147-g sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools, and falls as snow at 0 ∘C. (For water, 80. cal (334 J) is needed to melt 1 g of ice or must be removed to freeze 1 g of water and 540 cal (2260 J) is needed to convert 1 g of water to vapor at 100 ∘C.) Part A How many kilojoules of heat were released?
A steam turbine is to operate on a simple regenerative cycle. Steam is supplied dry saturated...
A steam turbine is to operate on a simple regenerative cycle. Steam is supplied dry saturated at 40 bar, and is exhausted to condenser at 0.07 bar. The condensate is pumped to pressure of 3.5 bar at which it is mixed with bleed steam from the turbine at 3.5 bar. The resulting water which is at saturated temperature is pumped to boiler. For the ideal cycle calculate, neglecting the feed pump work. 3 | P a g e I. The...
Suppose that 0.36 g of water at 25 ∘C condenses on the surface of a 51-g...
Suppose that 0.36 g of water at 25 ∘C condenses on the surface of a 51-g block of aluminum that is initially at 25 ∘C. If the heat released during condensation goes only toward heating the metal, what is the final temperature (in ∘C) of the metal block? (The specific heat capacity of aluminum is 0.903 J/g∘C and the heat of vaporization of water at 25 ∘C is 44.0 kJ/mol.)​
A solid box of 200 g mass, is pulled up the frictionless inclined surface of length...
A solid box of 200 g mass, is pulled up the frictionless inclined surface of length 150 cm and height of 75 cm. How much the work done by the pulling force in moving the box up the end of the inclined surface
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT