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
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)
1. 400,000 Ibm/hr of 270°F water is to be heated to 370°F by condensing saturated 390°F steam. (The steam does not sub cool upon condensing). Your job is to design the heat exchanger. The following parameters represent constraint your design. number of tube passes 4 tube fluid water being heated number of shell pass shell fluid steam being cooled U (based on outside tube area) 700 BTU/hr – ft² – °F 1 in tube outside diameter tube wall thickness 1/16 in bulk tube fluid velocity 5 ft/s (a) How many tubes are required per pass? (b) How many tubes are required total? (c) Allowing 3 ft for headers and flanges, how long should the exchanger be?
I have step by step but I don’t know how to read table and values ! Help with final calculations
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Determine a. the heat requirement b. the size of the settling/coalescing section of a horizontal heater treater for the following conditions: Oil flow rate= 5,000 BOPD Inlet oil temperature Water SG Inlet BS&W Outlet BS&W Retention time = 80°F = 1.04 = 10% = 1% = 20 mins Investigate treating at 80°F, 100°F, 120°F. D-0 21
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
For Heat transfer through cylinder tube wall, the temperature is to be a linear function of r (radius) of the tube. Select one: O True O False The conductivity of H20 in solid form (ice) is higher than that of H20 in liquid form (water). Select one: O True O False F, (Correction factor for temperature in some heat exchangers) should be 1.0 or greater than 1.0 in some cases. Select one: O True False
Please find the highest thermal efficiency possible, while remaining within the boundaries. What is required: -Power produced must be at least 60 Mega Watts -Thermal efficiency must be greater than 36% -Back-work ratio must be smaller than 48% Assume: -air is the working fluid -specific heats vary with temperature (use table A-17) -Compressor inlet is at 1atm and 300k -the combustion process is isobaric and is modeled as a heat exchanger -Turbine exhaust is the same pressure as compressor inlet Compressor specifics: -Max volume flow rate (m^3/h) = 600,000 -Max outlet pressure (atm) = 12 -Isentropic efficiency = 90% Combustion chamber and gas tubine specifics (Note these come as a set) -Max pressure = 16.7 atm -Max temp = 1500 (celcius) -Turbine isentropic efficiency = 92% -Max heat rate = 230MW
Operating temperatures: • Ambient temperature: 25°C. • Desired temperature inside the installation: 5°C. Power inputs and outputs: • Energy consumed by the system: 15 kW. • Energy dissipated to the environment: 5 kW. Specifications of the coolant used: • Refrigerant: R-134a. • Evaporation temperature: -10°C. • Condensation temperature: 40°C. Design based on Carnot's heat engine: • Hot source temperature: 40°C. • Cold source temperature: -10°C. • Theoretical Carnot efficiency: 37.5%. 1. Using the data provided, calculate the entropy change of the system during a complete refrigeration cycle. 2. based on the theoretical design of the heat engine Carnot, propose changes that could bring the real efficiency of the system closer to Carnot's theoretical efficiency. This may include adjustments to hot and cold source temperatures or system operating cycle.
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