P3: Ammonia gas(A) and nitogen gas (B) are diffusing in Gunterdhs straight glass tube 2.0 ft long with an inside diameter through 24.4 mm at 2q8 K and lol.32 Kla. Both ends of the tube are Connected to large mixed chambers at lol.32 kPa The Partial pressure of NH3 is canstant at 20 kPa in one cham ber and 6.66 KPe in the ofher. Calculate the diffusieon of NH3 O Calculate the diffusion of Na E Calausts the partial trsur s et pont (o.305 m) in the febe a

A room 3 m X 6 m X 10 m has walls of average absorptivity 0.05. The floor is covered with a rug (a = 0.6), and the ceiling is wood (a = 0.1). ( a ) Calculate the average absorptivity. (b) Calculate the reverberation time from (12.3.4). (c) Calculate the reverberation time from (12.4.2) and compare with the answer to (b).

1. A Rankine cycle with reheating has a throttle pressure of 135 bars at the turbine inlet and 28 bars reheat pressure, the throttle and reheat temperature of the steam is 550C, condenser pressure is 0.035 bar, mass flow rate of steam is 10 kg/sec. Draw the T-s and schematic diagram of the cycle and determine the following: (c) theoretical thermal efficiency (d) the steam rate (e) heat rate of the cycle

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