heat loss
The heat that is lost (in BTU's) through ceilings, roof, floors and exterior walls of a house.
heating systems ...
Fowler stressed that an octagon encloses more floor space per linear foot of exterior wall than does the usual square or rectangle, thereby "reducing both building costs and heat loss through the walls.
U-Value Measures the heat loss or gain due to differences between indoor and outdoor air temperatures and is expressed in terms of BTU's/hr/ft2. The U-Value (or Factor) equals one divided by the R-value.
- (thermal transmittance co-efficient) basically, a measurement of heat loss. Technically, it is calculated on the rate at which heat transfers through 1m2 of a structure where the temperature difference between the inner and outer face is 1 degree C.
Solar gain
The process of providing a net heat gain within a structure, over and above the normal heat loss, by passive collection of the sun's heat through windows and other glazed areas.
Thermopane - Two or more sheets of glass set apart from one another with a vacuumed space between to prevent condensation and reduce heat loss.
Thermostat - An automatic device to control heating or cooling.
the following equation can be used to estimate the natural draught/draft flow rate by assuming that the molecular mass (i.e., molecular weight) of the flue gas and the external air are equal and that the frictional pressure and heat losses are ...
dual-glazed units, the air between the glass sheets is thoroughly dried and the space is sealed airtight, eliminating possible condensation and providing superior insulation properties. Dual-glazing, compared to single-glazing, cuts heat loss in half ...
 See also: House, Floor, Door, Frame, System
  
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