### How many BTUs does it take to cool 800 square feet?

Roughly 36,000 BTU, but there are too many variables unknown to give an accurate estimate. Cubic feet, window and door area, insulation rating, climate zone, degree cooling days, directional orientation of dwelling/office/apartment, etc. and type of occupancy. See: www.aircon4u.net/www.aircon4u.net/air-conditioning-cooling-calculator.php

### What is the formula for cubic feet?

Cubic feet is a measure of volume so you multiply the length x width x height if you have them. Many 3 dimensional objects don't work that way. For example, you can measure the air in a big balloon in cubic feet, but there formula does not work. So there is on one formula to find volume in cubic feet. Perhaps you are interested in converting cubic inches to cubic feet? For this you need…

### How many ton in 40 cubic feet?

A ton is a measure of mass. A cubic foot is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid. If you are not convinced, consider 40 cubic feet of air. How many tons? Next consider 40 cubic feet of lead. How many tons?

### .8 cubic feet equals how many pounds?

It depends what you are measuring. The density (weight per volume) changes with each material. Air density is approximately 0.075 pounds per cubic foot, so 0.8 cubic feet of air would equal 0.06 pounds. Water density is approximately 62.4 pounds per cubic foot, so 0.8 cubic feet of water would equal 49.94 pounds.

### How much air fills a hot air balloon?

In theory, the larger the envelope on a hot air balloon (or the warmer the air inside compared to the ambient temperature outside), the more lifting force the balloon has. To answer your question, there is no single answer. Hot air balloons range in size from 70,000 cubic feet to over 200,000 cubic feet. (The "cubic feet" measurement refers to the volume of air inside the balloon envelope). Special shaped balloons can be enormous. The…

### How many cubic feet in 445 kilograms?

None. A kilogram is a measure of mass. A cubic foot is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid. If you are not convinced, consider a cubic foot of air. How many kilograms? Next consider a cubic foot of lead. How many kilograms?

### How many kg is 12.5 cubic feet?

There is no equivalence. A kilogram is a measure of mass. A cubic foot is a measure of volume. The two measure different things and,according to basic principles of dimensional analysis, conversion from one to the other is not valid. If you are not convinced, consider a cubic foot of air. How many kilograms? Next consider a cubic foot of lead. How many kilograms?

### Side wall cooling calculation for glass tank furnace?

Typically 1000 cubic feet per minute (per linear running foot of the perimeter at the glass line) of air at a static pressure of 4 inches of water column if the requirement is only for the sidewalls. so for a 6 meter by 14 meter furnace the perimeter would be slightly less than 40 meters (131 feet) so the installed cooling would be 131000 CFM (2 blowers of 65000 CFM) If the crown too is…