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AIR 2053 “A generation which ignores history has no past and no future.” Robert Heinlein 2006 Bigfoot 25B25RQ towed by a 2001 Born Free 23RK moho
Why is the "foul pole" in baseball completely inside fair territory? and a ball hitting it is fair..shouldn't it be a "fair pole"?
And in golf why should the positive thing to achieve be "making the cut"??... seems it should be "missing the cut" to me.
Why is refrigeration technology so stagnant?
i.e. why not a 20ooo or 24ooo BTU AirConditioner that weighs a whole lot less than todays 12ooo BTU models? for our RVs.
(Please don't mess up this fun thread by answering the latter here ).
Actaully, markdoane, I have the answer for that one!
Way back when, they used to harvest ice out of the lakes up north in the winter. They'd ship it down the Mississippi in wooden barges packed in sawdust. Packed in cold storage warehouses, it was believe-it-or-not enough to keep stuff cold all summer down south. Then in the latter part of the 1800's, there was an ice famine due to a warm winter, and the mechanical refrigeration industry was born.
In the very early days of mechanical refrigeration, the machines were extremely large and driven by steam engines. They were used to make ice, which was distributed by horse and wagon to provide cooling.
Ice plants were rated in "tons of ice per day," and it just so happens that 12,000 btu per hour times 24 hours is enough energy to freeze a ton of water into ice.
Ice plants were rated in "tons of ice per day," and it just so happens that 12,000 btu per hour times 24 hours is enough energy to freeze a ton of water into ice.
actually don you have the right church, but the wrong pew...
mechanical refrigeration was invented in 1855 by a german engineer responding to the law of supply and demand....demand had outgrown the supply of BEER since beer could only be brewed in the winter.....a british thermal unit(btu) is the amount of heat required to raise the temperature of one pound of water one degree fahrenheit...a ton of refrigeration is the refrigerating effect equal to melting a ton of ice in 24 hours....thus we are removing 12000 btu per hour or 200 btu per minute of heat from the air...my 2 cents fwiw...
norby
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Illegitimous noncarborundum(dont let the bastards wear you down)
The only true nobility is found through giving good food to your friends- Anton Careme
beauty is in the eye of the beerholder-cosmo fishhawk
if something is too good to be true, its usually gone before i get there-mister boffo
Don and Norbert:
Thanks for the information. I think both of you are 100% right!
Whether 12000 Btu per hour is the energy removed to make a ton of ice in 24 hrs, or 12000 Btu is the energy absorbed by a ton of ice melting in 24 hrs.... is there a difference?
I sure hope Sue and Von are enjoying this .
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