{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

NuclearCalc

NuclearCalc - ME 417 Design of Alternative Energy Systems...

This preview shows pages 1–2. Sign up to view the full content.

1 ME 417 Design of Alternative Energy Systems Nuclear Energy Calculations Conversion of mass into energy E = mc 2 Fission Fission of U-235 produces, on the average, 2.3 neutrons. Fission rate (fission per day) Fission Rate = Power ÷ [Energy Recovered per Fission] FR = P/E R in fissions/time For each fission, we consume one atom of the fuel, so the burn-up rate becomes Burnup Rate = [Fission Rate] x [Molecular Weight of Fuel] ÷ [Avaogrado’s Number] BR = FR MW f /N A = P MW f /(N A E R ) in mass/time Consumption rate (using the definition of the cross sections Consumption Rate = {[Absorption Cross Section]/[Fission Cross Section]} x [Burnup Rate] Fuel Element Temperatures ( coolant tot 2 f 2 2 f f T + HR R g 2 1 r - R 4k g = (r) T π + & & Inside surface temperature of the cladding (its hottest point) is given by + + = clad coolant clad gas clad coolant clad , i R h 1 k 2 ) R / R ln( g T T & Departure form nucleate boiling or burnout.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

NuclearCalc - ME 417 Design of Alternative Energy Systems...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online