steam power plant

A horizontal steam pipe (60 mm. OD) carries high pressure steam at 230℃ . Wind flows past this pipe at 1 m/s velocity. The ambient temperature is 32℃. Which mode(s) of convection should we consider here? Calculate the total rate of heat loss per m. length of the pipe.

What two pressures control the operation of an automatic expansion valve?

QUESTION 8 Which type of TEMA class heat exchanger used for heaters used in canteens ( hotels)? O A. Class C O B. Class R OC. Class A O D. Class B QUESTION 9 A designer reported 5 tube passes for a shell and tube heat exchanger. True False O E e TIONL40

J 5 A still which produces ethanol from corn mash. Edgar wants to condense the ethanol by running it though a copper tube. If the copper tube can transfer 0.6 btu per second and Edgar wants to produce 10 fifths of ethanol per hour, how long should the tube be?

Energy is generated uniformly in a 20cm thick wall the steady state temperature distribution of the wall is indicated on the table below; z (cm) T(C) 0 2 4 6 8 10 12 14 16 18 20 150 177 205 230 250 272 292 310 330 345 360 If thermal conductivity of the wall is 15 W/m.K and the indicated temperatures are in °C, determine the average rate of heat generation in unit volume.

1. Consider a 1000 MW power plant located in a rural area with 15 ton/day SO2 emissions from a 100 m high stack. The velocity and temperature of the stack gases lead to an effective stack height of 50 m above the physical stack. Estimate the ground level concentration as a function of distance downwind under the following conditions. The emissions are into a clear daytime atmosphere with wind (at 10 m) of 5 m/s. b. The emissions are into a clear nighttime atmosphere with wind (at 10 m) of 2 m/s. The conditions of a. except there is a strong elevated inversion at an altitude of 200 m. a. С.

An air pipe carries cool air at an inlet bulk temperature of 15C and a velocity of 12 m/s. The pipe is made of carbon steel of 0.25 m diameter, it is not insulated, and it( the pipe) will be maintained at temperature of 120C in order to raise the flowing air temperature to 45C. Calculate the Reynolds number, the heat transfer coefficient in W/(m^2K) and the lenght of this pipe in meters. Use Table A.4 to read the air properties.