Calculations of the number of British Thermal Units necessary to heat or cool each square foot of a room must also account for the climate zone and the room's insulation, sun exposure and primary function. Some calculations also account for the ceiling height. Divide the final BTU calculation by the total square footage to get the number of BTUs per square foot.Continue Reading
For square rooms, calculate the square footage by multiplying the room's width by its length. For irregular shapes, divide the room into a combination of squares and triangular shapes. Calculate the square footage of each shape and the add them together to determine the total for the room.
Check the climate zone maps provided by the U.S. Energy Information Administration to determine the necessary BTUs per square foot for your specific climate.
For heavily shaded rooms, reduce the amount of BTUs by 10 percent. Increase the amount by 10 percent for rooms with heavy sun exposure.
For rooms expected to regularly hold more than two people, increase the number of BTUs by 600 for each additional occupant.
For kitchens, add 4,000 BTUs to compensate for the energy from appliances.
Add BTUs for rooms with poor insulation, and subtract for rooms with good insulation.
Fan size is expressed as CFM capacity and is determined by dividing the area of a room by the number of minutes per hour needed to replace the volume of air. CFM indicates cubic feet per minute and indicates the amount of circulation necessary to properly ventilate a room.Full Answer >
To calculate a room's maximum occupancy, determine factors such as the area of the room, the available space in the room, the number of useful exits and the height of the ceiling. Calculate a basic estimation of a room's maximum occupancy by dividing the available floor space in square feet by 36.Full Answer >
To convert centimeters to feet, divide the number of centimeters by 30.48, which is the number of centimeters in a foot. Using this conversion rate, 195 centimeters is equivalent to 6.3976 feet, which can be rounded to a total of 6 feet 4 inches.Full Answer >
Some techniques people can use to avoid dry eyes include remembering to blink regularly while reading or looking at a computer screen, increasing the humidity level in the room, and wearing sunglasses to reduce wind and sun exposure, according to the American Optometric Association. People who experience dry eyes as a chronic condition can also rely on a number of prescription solutions.Full Answer >