Problem 3 During the isothermal heat rejection process of a Carnot cycle, the working fluid experiences an entropy change of -0.9 Btu/R. If the temperature of the heat sink is 110°F, determine (a) the amount of heat transfer, (b) the entropy change of the sink, and (c) the total entropy change for this process. Problem 4 1.5-lbm of water at 350 psia fill a weighted piston-cylinder device whose volume is 1 ft³. The water is then heated at constant pressure until the temperature reaches 550°F. Determine the resulting change in the water's total entropy.

Due to rise in temperature, the viscosity and unit weight of percolating fluid are reduced to 70% and 90% respectively. Other things being constant, the change in coefficient of permeability will be (a) 20.0% (c) 63.0% (b) 28.6% (d) 77.8%

A liquid has a relative density of 0.8 and a kinematic viscosity of 2.3 centistoke. Deterimineits: (i) Weight density and (ii) Dynamic viscosity in Pa.sec 2:

Calculate the percent volatility of the solids given that an empty container weighs 15.7g. A sample from the aeration tank is put in the container. At temperature 104 degC , the container now weighs 21.2211g. It was further heated in a furnace with a temperature of 540degC and gained a constant weight of 20.5057.

In the tank of 100 liters of brine containing 50kg totally dissolved salt. Pure water is allowed to run into the tank at the rate of 3 liters per minute. Brine runs out of the tank at rate of 2 liters minute. The instantaneous concentration in the

No. 1. (10 Pts) An aluminum pipe with a length of 60 m at a temperature of 10°C rests freely on the ground. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. (a) At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are aa=23x10-6/"C and as=12x10-6/ c, respectively.) (b) What is the axial stress developed in the aluminum pipe when the temperature was increased? 5 mm Aluminun Steel Figure No. 1

The saturated liquid of water at T=300C has total volume (v) of 0.05m3,quality(x) of 75%,vf=1.4036×10-3m3/kg,vg=0.02167m3/kg A.find the specific volume v in m/kg of two phase mixture  B.find the mass (m) of water in kg C.find the mass(mg) of the satured  vapor in kg D.find the mass(mf) of the satured  liquid in kg

Due to rise in temperature, the viscosity and unit weight of percolating fluid are reduced to 70% and 90% respectively. Other things being constant, the change in coefficient of permeability will be

B. A Carnot engine operates between two temperature reservoirs maintained at 200°C and 20 °C, respectively. If the desired output of the engine is 15 kW, as shown in Fig. below, determine the heat transfer from the high-temperature reservoir and the heat transfer to the low-temperature reservoir. TH-200°C On Engine QL T₁ - 20°C W 15 kW

4.15 A gas-condensate reservoir has an areal extent of 200 acres, an average thickness of 15 ft, an average porosity of 0.18, and an initial water saturation of 0.23. A PVT cell is used to simulate the production from the reservoir, and the following data are collected: Condensate Produced from Separator (moles) Wet Gas Pressure Produced (psia) (cc) Wet Gas 4000 (dew point) 3700 3300 0. 0.75 400 0.77 0.0003 450 0.81 0.0002 The initial cell volume was 1850 cc, and the initial gas contained 0.002 moles of condensate. The initial préssure is 4000 psia, and the reservoir temperature is 200°F. Calculate the amount of dry gas (SCF) and condensate (STB) recovered at 3300 psia from the reservoir. The molecular weight and specific gravity of the condensate are 145 and 0.8, respectively.