Yet another weird SF fan


I'm a mathematician, a libertarian, and a science-fiction fan. Common sense? What's that?

Go to first entry


 

Archives

<< current
 
E-mail address:
jhertzli AT ix DOT netcom DOT com


My Earthlink/Netcom Site

My Tweets

My other blogs
Small Sample Watch
XBM Graphics


The Former Four Horsemen of the Ablogalypse:
Someone who used to be sane (formerly War)
Someone who used to be serious (formerly Plague)
Rally 'round the President (formerly Famine)
Dr. Yes (formerly Death)

Interesting weblogs:
Back Off Government!
Bad Science
Blogblivion
Boing Boing
Debunkers Discussion Forum
Deep Space Bombardment
Depleted Cranium
Dr. Boli’s Celebrated Magazine.
EconLog
Foreign Dispatches
Good Math, Bad Math
Greenie Watch
The Hand Of Munger
Howard Lovy's NanoBot
Hyscience
Liberty's Torch
The Long View
My sister's blog
Neo Warmonger
Next Big Future
Out of Step Jew
Overcoming Bias
The Passing Parade
Peter Watts Newscrawl
Physics Geek
Pictures of Math
Poor Medical Student
Prolifeguy's take
The Raving Theist
RealityCarnival
Respectful Insolence
Sedenion
Seriously Science
Shtetl-Optimized
Slate Star Codex
The Speculist
The Technoptimist
TJIC
Tools of Renewal
XBM Graphics
Zoe Brain

Other interesting web sites:
Aspies For Freedom
Crank Dot Net
Day By Day
Dihydrogen Monoxide - DHMO Homepage
Fourmilab
Jewish Pro-Life Foundation
Libertarians for Life
The Mad Revisionist
Piled Higher and Deeper
Science, Pseudoscience, and Irrationalism
Sustainability of Human Progress


























Yet another weird SF fan
 

Saturday, October 16, 2010

A More Easily Evaluated Problem?

According to John Holdren (quoted here, seen via Greenie Watch):

A more easily evaluated problem is the tremendous quantity of waste heat generated at nuclear installations (to say nothing of the usable power output, which, as with power from whatever source, must also ultimately be dissipated as heat). Both have potentially disastrous effects on the local and world ecological and climatological balance.
The above quote appears to be real. On the other hand, it's from an article hidden behind a paywall. On the gripping hand, a search using Google Scholar will bring one to the same article.

I'll say it's a “more easily evaluated problem.” The above quote can be easily evaluated to be a heaping load of bullbleep. If we assume that the world population is 6.8 billion (almost enough to stand on Zanzibar), that a future advanced civilization uses 1.5 kilowatts per person (the same as the current U.S.), and that the power is generated at a thermal efficiency of 33%, then the total heat output (from both the power generators and the eventual dissipation of the electric power as heat) is about 3×1013 watts. The sunlight hitting the Earth is about 1.8×1017 watts, 6000 times greater. The extra heat won't be noticed.

If the human population rises to over a trillion, we might start to see some problems. On the other hand, by that time we will be spread all over the Solar System, which will increase the heat-dissipation area by a factor of billions.

0 Comments:

Post a Comment

<< Home

 
Profiles
My Blogger Profile
eXTReMe Tracker X-treme Tracker

Site Meter
The Atom Feed This page is powered by Blogger.