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A steam pipe is to be fitted in between two fixed points 30 metres apart The temperature of the steam will be 250.4 degrees C. If there is to be no tension in the pipe when it is at temperature, what length must the pipe be when it is cold fitted? Ambient temperature is 24 degrees C. The coefficient of expansion is 12.2 x 10 -8. Answer = mA copper sphere is 23 cm in diameter at 19 degrees C. Find the increase in diameter, surface area, and volume when the sphere is heated to 96 degrees C. 1. Increase in diameter = cm Number 2. Increase in surface area = cm2 Number 3. Increase in volume = cm3 Number TA firetube boiler shell is insulated except for 6 oval handhole openings. The boiler operates at 300 kPa. The handhole openings meet the minimum requirement set out by ASME Section 1. The thickness of each handhole cover plate is 9.5 mm. Ambient air temperature is 21 degrees C. How much heat is lost per hour through the handhole cover plates? Take "k" for the boiler material to be 57 W/m" C. Answer = MJ/hour