0
How do you determine btu per hour that is needed to heat a room?
Wiki User
∙ 15y ago
The correct way is to determine the coefficient of heat transmission for each of the areas of the room. Multiply this factor by the square footage and then multiply by the temperature difference at design temp. Then add all the values together. There are factors for each type of wall, floor, ceiling, type of window, etc. The coefficient of heat transmission, also called the "U value", is the inverse of the "R value". Example: A 20'X20' room with an 8' ceiling would work like this- 20X20= 400 sq. ft (floor and ceiling) total 800 sq.' 20X8=160X4 (walls)=640 sq.' R-19 insulation all around. 1/19= .053 U factor You want to maintain 70 degrees inside when it hits -10 outside (80 deg difference) Total area 640+800= 1440 sq. ft. 1440X.053X80=6105.6 BTU'S/ HOUR. Single pane windows are the worst for heat transmission. Low E are the best. U factors will vary slightly based on drywall, siding, etc. Air infiltration (leakage) also can really change the numbers too. Window manufacturers publish the U or R values for the windows and are easily obtained. Hope this helps. lc
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
How many btu needed to heat 625 sq feet?
btus needed to heat & cool 625sf room
Who installs radiant heating panels?
An architect or an engineer is needed for the installation of radiant heating pads. Since each room has different requirements due to structure and space a professional is needed to determine which type of radiant heating pads are necessary to provide the best heat for that room.
What will happpen to a hot water if it is kept in a room for 1 hour?
Heat would have been lost as it is kept in a room at a room temperature of about 30 degrees celsius
What is the formula to determine the BTU's needed to cool a bedroom?
The heat gain of the room on a design day = capacity of ac unit needed. A design day is the normal maximum heat and humidity conditions expected to occur in your area of the country. If you are only seeking advice on sizing a window unit, measure the sq footage of the room and the sales people should be able to help you out with that and by asking a few other questions such as # and type of windows, what is above and below the bedroom etc.
How many btus are needed to heat a sixty square foot room?
its usually about 20 btu's per square foot
What is a machine room in a recording studio?
The machine room usually contains racks of gear that aren't needed in the actual control room. Computers, interfaces, and things like that will be outside of the control room to get rid of excess noise and heat.
What is room sensible heat factor?
It is the ratio of room sensible heat to the total heat.
How do you determine the correct wattage or lumens needed to properly light a given size room?
Try contacting a specialized electrical lighting contractor or lighting fixture store. They should have the formulas to determine this for you.
Why it is needed to heat a sealing wax?
Sealing wax is had and brittle at room temperature. Thus if you want to use it to seal a document you must heat it until it becomes runny using a flame.
What is the temperature of the room at the end of 0.7 hour if all the energy remains in the air in the room and none is added by an outside source?
It depends on the size of the room, and what there is inside the room generating heat. Electric lights ? Space heater ? Refrigerator ? TV set ? Warm bodies ?
How much heat is needed to maintain 45F in a 6200 sqft building?
There is not enough info here to provide an answer. Would need the ambient room conditions along with an accurate load calculation for the room.
When heat energy is used it becomes?
It becomes cold. Until room temperature. Then energy must be needed to suck more heat from it, and it can get colder then, like in a fridge - it is plugged into the power slot which powers it
