Assume that heavy timber beams will shrink approximately 2 percent in the cross-grain dimension as they continue to dry after installation in a building. If there are four framed floor levels, supported by 24-inch-deep (600 mm) beams at each level, what would be the accumulated shrinkage at the roof if columns at each floor rested on these beams?

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.