Heat and Water Temps ??

"Bette In Ohio" wrote in message
...
Any good tips on how to help bring down water temps of 80 degrees.
The heat is on, here in OH-- the pond was at 78 degrees yesterday and 81
degrees today.


Take advantage of basic chemistry. Use water in an alternate form. Namely
ice. It takes a lot of heat energy to melt ice. Heat energy that can come
from the pond.

For a large enough pond, cut the top off a 2 liter soda bottle, fill it
about 3/4 with water, then freeze it over night.
Then put the giant ice cube in the top of the waterfall. Assuming my math is
correct, each 2L bottle of ice will lower a 2000 gal pond by 0.2F, and
further assuming that the heat energy only comes from the pond, and not the
air above the pond.

10lb blocks of ice is about 4.5L of ice. Placed in the waterfall stream, it
should do a good job of evenly spreading out the cooler water, instead of
creating a cold spot in the pond which could shock the fish.

Math:
Heat 2L of ice @ -5C
2000mL * 5C * .5cal/CmL = 5000 calories
Melt 2L of ice
2000mL * 80cal/mL = 160000 calories
Heat 2L of ice water to 26.6C (80F)
2000mL * 1 cal/CmL * 26.6C = 53200 calories

Cool 2000 gal (7570L) pond by N degrees
7570L*1000mL/L * 1cal/mL * N = 218200 calories
N = 0.028C ~= 0.03C