Posted Apr 7, 2010, by Robin Bornoff
Larry Grayson’s famous high camp catchphrase would be well heeded by those wanting to ensure good thermal insulation. You can make it difficult for heat to leave a room, thus maintain a warm room temperature, by constructing walls and floors of sandwiched layers of various materials, restricting heat transfer to conduction and (in cavities) radiation methods only. Open a door however and cold air will … Read More
Tags:
FloVENT,
HVAC,
CFD,
Thermal Insulation,
U-Value
Posted Mar 12, 2010, by Robin Bornoff
Conduction, the transfer of heat through a solid object. Convection, the transfer of heat in moving air/fluid. Radiation, the transfer of heat from one solid surface to cooler solid surface in ‘line of sight’. The 3 modes of heat transfer are your enemy when it comes to thermal insulation of built environments. Heat is as sly as a fox when it comes to squirming its way out of a space to the cool outside. … Read More
Tags:
HVAC,
Thermal Insulation,
FloVENT,
U-Value,
Watts
Posted Feb 2, 2010, by Robin Bornoff
It might well be that a single U-value is quoted, in reality though that single value describes the ease by which heat can pass through various stages, from an ‘inside’, passing through a ‘wall/window’ and going to the ‘outside’. The resistance (inverse of the ease, resistance = 1/ease) the heat experiences as it passes from the inside air to the inner solid surface of the wall construction (and from … Read More
Tags:
FloVENT,
HVAC,
Boundry Layer,
Thermal Insulation,
U-Value
