Heat gain


Also found in: Medical.

heat gain

[′hēt ‚gān]
(engineering)
The increase of heat within a given space as a result of direct heating by solar radiation and of heat radiated by other sources such as lights, equipment, or people.

Heat gain

Increase in the amount of heat in a space, including heat transferred from outside in the form of solar radiation, and heat generated within by people, lights, computers, copiers, mechanical systems, and other sources. This additional migration of heat into a space is accomplished by conduction, radiation, or the natural exchange of air. This increase in the amount of heat in a given space must be mitigated by air-conditioning.

heat gain

The net increase in heat within a space.
References in periodicals archive ?
With rising temperatures, it will become increasingly more challenging to reduce heat gain in the buildings during daylight and cool the buildings in an energy-efficient manner.
* Insulate flat surfaces of the mold block with flat insulation board to reduce parasitic heat gain to the chilled water system.
where [[phi].sub.core] is the metabolic heat gain of human body (W), [[phi].sub.storage] is the heat flux (W) for rising body temperature or stored heat flux within body, [[phi].sub.evaporation] is the heat flux (W) evaporated in the lungs and from the skin, and [[phi].sub.dissipation] is the dissipated heat flux (W) from body to environment.
If you have curtainwall that needs to be replaced anyway, glazing that lets an adequate amount of light through but mitigates glare and solar heat gain is a smart purchase.
Heat gain appears to be a serious problem in buildings, as it gives serious impact of the increasing cooling load on the building in Malaysia [3].
Shading should be on the outside as it reduces heat gain up to 80pc.
A one-dimensional finite volume method (FVM) model was developed that could compute CTSFs by pulsing the exterior surface with a unit heat gain triangular temperature pulse.
* Hot water used within the building does not contribute to internal heat gain
Outdoor air replaces the hot exhaust to lower air temperatures and reduce the thermal heat gain of the floor, structure and contents.
Modern windows have come a long way since your childhood days--they are layered with heat-reflecting glass as well as gases that reduce heat loss in winter and heat gain in the summer.
where: [q.sub.so]--solar heat flow density, recalculated from theoretically framed period taking into account direction of the windows and doors, W/[m.sup.2]; g--solar heat gain coefficient of the glazing; [A.sub.gl]--area of the glazed part of windows and doors, [m.sup.2]; a--correction due to shading.
You have only to touch a window on either a very hot or a very cold day and you'll realize just how much heat gain and loss there is through windows.