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square feet have no meaning
1 btu will raise 1 pound of water 1 degree F
an 80 gallon water heater has 640 pounds of water
644 btu will raise the water temperature 1 degree
typical water heater input is 36,000btu / hour
water temperature desired 120 water starts at 70 degrees to raise the water 50degrees requires 51000Btu or about 1.5 hours (recovery time)
this does not account for heat loss or heat transfer from the flame to the water
the volume of air in the room is a factor
(square feet at 8' ceiling takes 1/2 as much as 16')
the weight of the air the weight of the stuff in the room
people in the room add heat
a lot harder to cool an auditorium than an empty warehouse
so what are you cooling and what is its thermal mass?
is there a phase change?
( to cool water from 33 degrees to 32 takes 90 times the heat removal)
is there a time constraint ?
( can we get it cool within 3 hours or must it take 5 minutes)
most important
how many degrees must we drop the temperature?
Wiki User
∙ 11y ago
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How many square in a room 5 foot by 12 foot?
60 square feet
How many square feet in a 9 foot by 12 foot room?
108 square feet
What if your room is 30 foot by 5 foot how many square meters is that?
13.93 square meters.
How many square meters are in a room 13 foot by 6 foot?
7.25 square metres.
How many square feet in a 11 foot by 15 foot room?
165 square feet
How many square feet of carpeting are needed to carpet a 12-foot by 12-foot room?
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How many square feet are in a 20 foot by 20 foot room?
A room measuring 20' x 20' = 400 square feet
How many square feet of carpeting are needed to carpet a 12-foot x 12-foot room?
The room is 144 square feet.
How many square foot in a room 12 foot by 12 foot?
12' x 12' = 144 square feet.
How many square feet in a 12 foot by 12 foot room floor?
144 square feet.
How many square meters is a room that measures 8 foot by 6 foot?
About 4.459 square meters.
How many square feet in a 11 foot x 6 foot room?
There are 66 square feet.
