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23 Nov 2019

How much mass is lost per day by a nuclear reactor operated at a1.0-GW (109-W) power level?

a) 0.31X10-6g

b) 0.96 g

c) 2.3 g

d) 5.6 kg

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Reid Wolff
Reid WolffLv2
1 Nov 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Steam generators in a "typical" PWR in the USA have thefollowing operating conditions:

Side Pressure,MPa(absolute)
Primary loop 15.5
Secondary loop 6.2

InletTemperature,°C Outlet Temperature,°C

Primary side 315 (liquidwater) 275 (liquid water)

Seconadary loop 220 (liquidwater) 275 (saturated steam)

(1) Calculate the mass flow rate (gallon per minutes) in theprimary and secondary loop
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In a typical chemical reaction, 10-10 of the mass ofthereactants is transformed into energy. That is, if1010kg of coal and oxygen are burned, the mass of theresulting gases,ash, etc. will be (1010 - 1) kg and theenergy producedwill be (1 kg)c2. For a typical nuclearfissionreaction, about 10-3 of the mass is transformedintoenergy. Consider a large electrical power plant thatproduces108 Watts of electrical power. Assume itsefficiency forconverting heat into electricity is 40%.
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Steam generators in a "typical" PWR in the USA have thefollowing operating conditions:

Side Pressure,MPa(absolute)
Primary loop 15.5
Secondary loop 6.2

Inlet Temperature,°C Outlet Temperature,°C

Primary side 315 (liquid water) 275 (liquid water)



Seconadary loop 220 (liquid water) 275 (saturated steam)



(1) Calculate the mass flow rate (gallon per minutes) in theprimary and secondary loop
respectively if the reactor is rated at 1000 MWe.
(2) The temperature of the sea water used in the condensing processincreases by
approximately 11.5 °C. Note that 34% of thermal power has beenconverted to
mechanical (turbine)-electrical (generator). Calculate the massflow rate (gallon per
minutes) in the tertiary loop.
(3) About 11 000 gallon per minutes of water is lost to evaporationin a cooling tower.
Calculate the heat lost by evaporation in W.

The thermal efficiency of a nuclear powerplant is 34%

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