The first 40 cm of a 1.15-m long plate is unheated, whereas the remaining length is heated, resulting in a uniform surface temperature of 450°c. atmospheric air at 135°c flows across the plate at a velocity of 14 m/s. if the plate is square, find the total convective heat transfer from the plate.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?