<div dir="ltr">To quote Fremlin's article:<br><br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">
<h3 class="">Stage 4a: up to 12,000 million million in 800
years' time. Dead end</h3>
<p class="" style="margin-top:0.04in;margin-bottom:0.04in;line-height:100%">
Above two people per square meter, severe refrigeration problems
occur. If the oceans were used as a heat sink, their mean temperature
would have to rise about 1 °C per year to absorb 500 watts per
square meter. This would be all right for the doubling time of 37
years, at the end of which we should have four people per square
meter. Half another doubling time could be gained if efficient heat
pumps (which, for reasons of thermal efficiency, would require
primary energy sources of very high temperature) could be used to
bring the ocean to the boil.</p>
<p class="" style="margin-top:0.04in;margin-bottom:0.04in;line-height:100%">
Two more doublings would be permitted if the oceans were converted
into steam, though that would create an atmospheric pressure
comparable with the mean ocean bottom pressure at present. Since the
resulting steam blanket would also be effectively opaque to all
radiation, no further heat sink could be organized and this procedure
would therefore seem to lead to a dead end.</p>
</blockquote><div><br></div><div>source: <a href="http://www.claychipsmith.com/Population.doc">http://www.claychipsmith.com/Population.doc</a> <br></div></div>