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- 45. A saturated steam at 410K is being transported in a pipeline (brass drawing tubing) at a rate of 1 grams/second. Pipe has inside diameter of 0.025 m. The tube is 100m long. The pressure at the entrance is 80kPa. It will under compressible or incompressible criteria. (use Perry's Handbook for the properties and constants) R = 8314J/kgmol.K; MW=18.02g/mol * Mark only one oval. Compressible IncompressibleDefine the Under steady-flow conditions?AH of vaporization of water is 439.2 cal/g at the normal boing point. Since virus can survive at 404.39 K by forming spores. Most virus spores die at 851.9 K. Hence, autoclaves used to sterilize medical and laboratory instruments are pressurized to raise the boiling point of water to 851.9 K. Find out at what InP (torr) does water boil at 851.9 K? O a. 8460.435 O b. 940.048 c. 1880.097 O d. 2.474
- This is a resubmission question. I need assistance in solving this experiment. fluid flowing in the pipe is AIR at 15degrees celsius.Design a hydrocooling unit to cool down fruits and vegetables from 30 °C to 5 °C in 20 minutes at a rate of 20,000 kg of fruit or vegetables/h. The design must fulfill the following requirements: The unit will be an immersion flooded system. It must be able to cool down and transport the products in chill water. The tank has the following dimensions approximate. three meters wide and up to 90 cm hight. The water will circulate and be cooled through the evaporation section of a refrigeration system. The refrigerant temperature inside the coils will be -2 °C, and the water temperature must not drop below 1 °C and must not exceed 6 °C. Assuming reasonable values for the average density, specific heat, and porosity of the product (the fraction of the volume of air in a box), recommend reasonable values for: The speed of the water through the canal, the capacity of the cooling system. the compressor power.The following data for steam condenser: Steam condensed = 50000 kg/h; Temperature of steam in condenser = 40 oC; Dryness of steam entering into condenser=0.85; The air leakage in the condenser = 150 kg/h; Temperature of the condensate = 35oC. Find: (1) The air leakage pressure. (2) Quantity of cooling water passed through the condenser per hour if the rise in cooling water temperature is limited to 10oC
- A steam trap is a device to purge steam condensate from a system without venting uncondensed steam. In one of the crudest trap types, the condensate collects and raises a float attached to a drain plug. Whenthe float reaches a certain level, it “pulls the plug,” opening the drain valve and allowing the liquid to discharge. The float then drops down to its original position and the valve closes, preventing uncondensed steam from escaping.(a) Suppose saturated steam at 25 bar is used to heat 100 kg/min of an oil from 135°C to 185°C. Heat must be transferred to the oil at a rate of 1:00 x 10 4 kJ/min to accomplish this task. The steam condenses on the exterior of a bundle of tubes through which the oil is flowing. Condensate collectsin the bottom of the exchanger and exits through a steam trap set to discharge when 1200 g of liquid is collected. How often does the trap discharge?(b) Especially when periodic maintenance checks are not performed, steam traps often fail to close completely…6 In a boiler test, the following observations wcre made: 358 A Text Book of Thermal Engineering Feed water temperaturç e= 12" C; Pressure of steam = 11 bar; Dryness fraction of steam 095 Mass of coal burnt 300 kg/h, Calorific value of coal 32 000 kJkg of coal; Mass of water supplied to boiler in 7 hrs 14 min= 14 625 kg. The mass of w ster in the boiler at the end of the test was less than that at the commencement by 900kg. Calculate I. Actual evaporation per kg of coal: 2 Equivalent evaporation from and at 100 C per kg [Ans. 7 15 kg, 8 33 kg: 58.75 % of coal ; and 3. Thermal efficiency of the boilerA certain gas was produced as a product of a decomposition reaction in a reactor vessel. The reaction generated a certain amount of force that allowed the gas to move at 35 m/s. The diatomic product gas (gamma = 1.36) will be transported adiabatically in a commercial steel pipe with a diameter of 1 inch. If the exit of the reactor and start of the pipe has a same pressure of 6 atm abs. and temperature of 120 degrees Celsius. The molecular weight of the gas is 70.91 kg/kgmol. 2. What is the Mach No. at the entry of the pipe? 0.36 0.41 0.14 none of the given 0.25 0.52 0.63
- 2. Two hundred and fifty pounds of a mixture of 10 mol% propane 20% n-butane, and 70% n-pentane is completely vaporized in a pipe still in one hour. At the outlet, the temperature anc 433 F and 600 psia. What is the volumetric flow pressure are rate in cfm at the outlet conditions? Answer: The physical properties of the gas are: Tc Pc MW Propane 369.9 K 665.8 R 42.0 atm 44 Butane 425.17 K 765.31 R 37.47 atm 58 Pentane 469.8 K 845.64 R 33.3 atm 72A condenser of a steam power plant indicates a vacuum of 65 cm of Hg when barometer reads 75 cm Hg. The condensing steam has a temperature of 45 o C and a dryness fraction 0.9. Calculate: (i) the amount of air to be handled by the pump per min. if the rate of steam condensation is 2000 kg/hr. (ii) vacuum efficiency of the condenser.Estimate the power required to boil the water in a copper pan (Cs,f = 0.013 and n = 1), 180 mm in diameter. The bottom of the pan is maintained at 115 ℃ by the heating element of an electric range. Properties of Water (1 atm): Tsat = 100℃, ρl = 957.9 kg/m3, ρv = 0.5955 kg/m3, Cpl = 4217 J/kg.K, μl = 279*10^-6 N.s/m2, Prl = 1.76, hfg = 2257 kJ/kg, σ = 58.9*10^-3 N/m. Select one: a. 16420 W b. 18166 W c. 16240 W d. 11760 W