certain fluid has an enthalpy 1800 KJ/kg and 500 KJ/kg work flow. Find the internal energy.
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A certain fluid has an enthalpy 1800 KJ/kg and 500 KJ/kg work flow. Find the internal energy.
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- What isthe weight of a 10ft cube tank of oxygen if the oxygen is pressured ti 400 psia, the tank itself weighs 100 lb/ft and the temperature is 70FCalculate the specific heat of the material in J/g-deg C if material of 10 kilograms raises by 2 deg C when 2000 joules of heat is added. O 100 O 50 O 0.1 O 0.2 O none of the aboveNo. 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
- At the start of compression in an air standard Otto cycle with a compression ratio of 10, air is at 100 kPa and 313.15 K. A heat addition of 2800 kJ/kg is made. Calculate the thermal efficiency. For air, use k=1.4Figure 2 shows an assembly made of a steel tube of internal and external diameter of 20 mm and 30 mm respectively, brass and copper bars, each having 25 mm of diameter. The three materials have equal length of 500 mm and are symmetrically rigidly fixed at the upper end while being joined by a horizontal collar (with negligible mass) at their bottom end. An application of a vertical downward load P on the assembly, results in storing a total of 20 J of energy. The moduli of elasticity for steel, brass and copper materials are ESt=200 GPa, EBr=100 GPa and ECu=80 GPa, respectively. Calculate 1. The load P if it is applied gradually.2. The load P if it is applied suddenly.3. The impact load P that falls from a height of 200 mm above the collar.One pound of an ideal gas undergoes and isentropic process from 95.3 psig and a volume of 0.6 ft³ to a final volume of 3.6 ft3. If Cp = 0.124 BTU/lbm-°R and Cy = 0.093 BTU/lbm-°R, determine: 1. Final temperature in °F 2. Final pressure in psia 3. Change in enthalpy in BTU 4. Work in BTU