A Unit Load AS/RS system consists of 10 aisles with an S/R machine in each aisle. The storage rack is 400 feet long and 80 feet high. The I/O point is located at the lower left-hand corner of the rack. The S/R machine travels at 300 FPM in the horizontal direction and 60 FPM in the vertical direction. The time required for a pick-up or deposit operation is 0.25 minutes. A. What is the expected round-trip SC cycle time, assuming a policy of shared (random) storage

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?