The exit flowing quality of the average bundle of BWR is 14.6%. It operates at 1000 psia with a slip ratio of 1.8. The bundle has 64 fuel rods which have an outer diameter of 0.493 inches on a 5.52 inch square pitch. The mass flow rate into the bundle is 1.43x105 Ibm/hr. For the bundle, determine: a) The void fraction b) The two phase density c) The vapor phase velocity d) The liquid phase velocity e) The superficial liquid velocity f) The superficial vapor velocity g) The flow regime based upon the Hewitt-Roberts map At 1000 psia: P=46.297- Pg = 2.2419 lbm ft. Ibm ft.
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- 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 72Define the Under steady-flow conditions?An evaporator is concentrating F kg/hr at 311K of a 20 wt % solution of NaOH to 50%. The saturated steam used for heating is at 399.3 K. The pressure in the vapor space of the evaporator is 13.3 kPa abs. The overall coefficient is 1420 W/. K and the area is 86.4 square meters. Calculate the feed rate F of the evaporator.
- 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.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 IncompressibleA Copper ball at 40'Cis dropped in a mug containing water at 40°C. The heat will Select one: O a.not flow from Copper ball to water or from water to Copper ball O b. flow from Copper ball to water O c. Increase the temiperature of both O d. flow from water to Copper ball
- Please don't give image based answer..thanku Question:- Water vapor enters a continuous flow adiabatic turbine at 9 MPa pressure, 450 o C temperature and 188 m/s velocity, and exits at 50 m/s speed at 20 kPa pressure and 92% dryness. Calculate the turbine inlet cross-sectional area since the mass flow rate of the steam is 12kg/s.B/A boiling channel receives a thermal power of 6000 kw. If subcooled water at 275 °C enters the channel at a flow rate of 15 kg/s what is the void fraction at the channel outlet where the slip ratio is 1.687 and pressure is 68 bar. Given data: At 68 bar: h=1256 KJ/Kg, hg-1518 KJ/Kg, V-1.344*10-³ m³/Kg, V-28.27*10³ m³/KgA 0.6 m3 tank contains gas at a pressure of 5800 kPa gage, a temperature of 75 deg. Celsius and mass of 25 kg. A part of this gas was discharged and the temperature and pressure changed to 60deg. Celsius and 4130 kPa respectively. Heat was applied and the temperature was back to 75 deg. Celsius. Find: (a) the final mass in the tank in kg CHOICES 9.36 15.63 18.283 (b) the discharged mass in kg. CHOICES 6.716 15.63 9.36 (c) the final pressure of the gas in kPa gage CHOICES 4215.56 5135.88 4135.88
- Evaporator, single effect is used to upgrade the concentrate 8000 kg/h of tomato juice than 5% solids the total to 30% solids total. Juice enters the Evaporator at 15 °C. The Evaporator is operated with Steam (quality 80%) in 143.27 kPa. The condition of vacuum in the Evaporator allow the juice to a boil on the 75 °C. The hot kind of material dilute is 4.1 kJ/(kg °C) and the product the concentrate is a 3.1 kJ/(kg °C). Count (a) the Rate of the needs of steam = kg/h. b. The economic steam if the temperature is condensate is released at 75 °C. = (kg water evaporated/kg of steam) Help me :-(Question 3 This question requires the use of the steam property tables (Rogers and Mayhew) uploaded on QM+ exam section. All properties should be evaluated at the temperature of the steam. Saturated, pure steam at a temperature of 170 °C condenses on the outer surface of a vertical tube of outer diameter 2 cm and length 1.5 m. The tube surface is maintained at a uniform temperature of 150 °C. Calculate: a) the local film condensation heat-transfer coefficient at the bottom of the tube. b) the average condensation heat-transfer coefficient over the entire length of the tube. c) the total condensation rate at the tube surface.2 m^3/min of a light oil are to be heated from 20C to 100C (with zero vaporization) in an exchanger using 250 kPa steam of 90% quality. The heat losses to the surrounding air have been estimated to be 5% of the heat transferred from the condensing steam to the oil. If the steam condensate leaves at its saturation point, what mass of steam perhour will be used in the exchanger? For light oil, Specific gravity= 0.88Specific heat= 2.00 kJ/kg-KFor steam at 250 kPa,Saturated liquid: hf= 535.49 kJ/kgvf=0.001067 m^3/kgSaturated vapor: hg= 2716.8 kJ/kgvg= 0.7188 m^3/kg