A Pressurized Water Reactor fuel rod is 12 ft long and 0.374 inches in diameter (outer) on a 0.496 inchsquare pitch. The fuel pellet diameter is 0.3225 inches. The fuel rod gap is constant with a width of0.0065 inches. The system pressure is 2250 psia and can be assumed to be constant. The rod operatesat linear heat rate of 12.1 kW/ft. At the elevation of interest, the coolant temperature is 575 °F with aconvective heat transfer coefficient of 6200- For this elevation determine the temperatureBTUhr ft²Fmargin to boiling according to Jens-Lottes. Also assume constant fluid properties given as:p=46.39Ibm=,c. 1.261-BTUIbm-FBTU-,k=0.334-hr-ft-FIbmft-hrM=0.222- -, Tsat 652.7F=

Answered: A Pressurized Water Reactor fuel rod is…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.36P

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Estimate the heat exchanger area needed to cool 55,000 lb/hr of a light oil (specific heat= 0.74 Btu/lb°F) from 190°F to 140°F using cooling water that is available at 50°F. Thecooling water can be allowed to heat to 90°F. An initial estimate of the Overall HeatTransfer Coefficient is 120 Btu/hr.ft².°F.  Show a schematic of the heat exchanger. Estimate the required mass flow rate of cooling water. The LMTD Taking the shell and tube heat exchanger described above how manytubes of 3 inch diameter and 10 ft length should be used?
4.26 please
8.8. A solar collector and storage tank, shown in Fig. 8-15a, is to be optimized to achieve minimum first cost. During the da Hide image transcript 8.8. A solar collector and storage tank, shown in Fig. 8-15a, is to be optimized to achieve minimum first cost. During the day the temperature of water in the storage vessel is elevated from 25°C (the minimum useful temperature) to tmax, as shown in Fig. 8-15b. The collector receives 260 W/m² of solar ener- gy, but there is heat loss from the collector to ambient air by convection. The convection coefficient is 2 W/(m² · K), and the average temperature differ- ence during the 10-hour day is (25 + tmax)/2 minus the ambient temperature of 10°C. The energy above the minimum useful temperature of 25°C that is to be stored in the vessel during the day is 200,000 kJ. The density of water is 1000 kg/m³, and its specific heat is 4.19 kJ/(kg · K). The cost of the solar collector in dollars is 20A, where A is the area in square meters, and the cost…
You are designing a heat recovery system for a new autonomous Mars rover. The system currently uses freon as the heat transfer fluid. The system must maintain an instrumentation temperature of at least−67◦Fin an environment of 189K. If the system needs to move47.4BT U, what volume of working fluid is needed in units ofL? Note that freon has a specific gravity of 1.49, a molecular mass of 120g/mol, and a specific heat of 74J/(molK)
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a. An air stream passing through a 2-inch (1/6 ft) diameter, thin-walled tube is to be heated by high- pressure steam condensing on the outer surface of the tube at 320 °F. The overall heat transfer coefficient, h between steam and air can be assumed to be 25 Btu/(ft2.hr °F) with the air entering at 100 ft/sec, 10 psia, 40 °F. The air is to be heated to 150 °F. Determine the tube length required. Assuming Rayleigh Line flow, calculate the static pressure change due to heat addition. Also, for the same inlet conditions, calculate the pressure drop due to friction, assuming Fanno flow in the duct with f = 0.018. b. c. d. To obtain an approximation to the overall pressure drop in this heat exchanger, add the two results. Discuss the accuracy of this calculation.
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Oxy-acetylene torches can be used to cut or weld metal .Oxygen and acetylene are fed from separate compressed gas cylinders through pressure regulators to the torch where they are mixed and combusted .To estimate the amount of metal that can be cut or welded per unit volume of gas, the composition of the gases produced by combustion and heat produced by the combustion reaction must be determined .For this problem: Define a closed system that can be used to calculate the heat produced Define an open system that can be used to calculate the heat produced List at least two intensive variables that are important in calculation List at least two extensive variables that are important in the calculation
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