Ads
related to: btu per square foot heating- 118 Graceland Blvd Ste 303, Columbus, OH · Directions · (614) 570-8311
Search results
Results From The WOW.Com Content Network
In the United States and Canada, the R-value that describes the performance of thermal insulation is typically quoted in square foot degree Fahrenheit hours per British thermal unit (ft 2 ⋅°F⋅h/Btu). For one square foot of the insulation, one Btu per hour of heat flows across the insulator for each degree of temperature difference across it.
Measured in square feet, the reference standard for EDR is the mattress radiator [1] invented by Stephen J. Gold in the mid 19th century. One square foot of EDR is able to liberate 240 BTU per hour when surrounded by 70 °F (21 °C) air and filled with steam of approximately 215 °F (102 °C) temperature and 1 psi of pressure.
Although the concept of U-value (or U-factor) is universal, U-values can be expressed in different units. In most countries, U-value is expressed in SI units, as watts per square metre-kelvin: W/(m 2 ⋅K) In the United States, U-value is expressed as British thermal units (Btu) per hour-square feet-degrees Fahrenheit: Btu/(h⋅ft 2 ⋅°F)
For premium support please call: 800-290-4726 more ways to reach us
Use up to 60 kWh/m 2 (19,020 BTU/sq ft; 20.07 MJ/sq ft) of floor area per year primary energy (for heating, hot water and electricity). Leak air up to 0.6 times the house volume per hour ( n 50 ≤ 0.6 / hour) at 50 Pa (0.0073 psi) as tested by a blower door ; or up to 0.05 cubic feet per minute (1.4 L/min) per square foot of the surface area ...
Nothing warms up a room like a gas fireplace and stately mantle. These are your best options for a worthwhile investment.