Radiant heating - Revision history

Designing Buildings at 08:59, 13 November 2020

2020-11-13T08:59:06Z

← Older revision		Revision as of 08:59, 13 November 2020
Line 77:		Line 77:
	* Visible light.		* Visible light.

−	[[Category:~~Products_/_components~~]] [[Category:DCN_Product_Knowledge]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Products_/_components]]

Designing Buildings at 06:27, 20 July 2020

2020-07-20T06:27:23Z

← Older revision		Revision as of 06:27, 20 July 2020
Line 1:		Line 1:
−	~~To help develop this article, click ‘Edit this article’ above.~~
−
−	~~-----~~
	Heat transfer mechanisms include:		Heat transfer mechanisms include:

Line 56:		Line 53:
	* It can be difficult to repair.		* It can be difficult to repair.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Air handling unit.		* Air handling unit.
Line 82:		Line 77:
	* Visible light.		* Visible light.

−	[[Category:Products_/_components]]	+	[[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Editor at 18:08, 26 May 2020

2020-05-26T18:08:20Z

← Older revision		Revision as of 18:08, 26 May 2020
Line 20:		Line 20:

	* Underfloor heating systems.		* Underfloor heating systems.
−	* Wall heating systems.	+	* Wall heating systems (including tempering heating).
	* Radiant ceiling panels.		* Radiant ceiling panels.
	* Integrated service modules.		* Integrated service modules.

Editor at 18:05, 26 May 2020

2020-05-26T18:05:33Z

← Older revision		Revision as of 18:05, 26 May 2020
Line 77:		Line 77:
	* HVAC.		* HVAC.
	* Radiation.		* Radiation.
		+	* Tempering heating.
	* Thermal comfort.		* Thermal comfort.
	* Underfloor heating.		* Underfloor heating.

Designing Buildings at 14:08, 9 August 2017

2017-08-09T14:08:26Z

← Older revision		Revision as of 14:08, 9 August 2017
Line 79:		Line 79:
	* Thermal comfort.		* Thermal comfort.
	* Underfloor heating.		* Underfloor heating.
		+	* Visible light.

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Editor at 12:27, 17 February 2016

2016-02-17T12:27:44Z

← Older revision		Revision as of 12:27, 17 February 2016
Line 1:		Line 1:
−
	To help develop this article, click ‘Edit this article’ above.		To help develop this article, click ‘Edit this article’ above.

−	----	+	-----
−		+
	Heat transfer mechanisms include:		Heat transfer mechanisms include:
−	*Radiation.	+
−	*Convection.	+	* Radiation.
−	*Conduction.	+	* Convection.
−	*Phase change.	+	* Conduction.
		+	* Phase change.

	All bodies which are hotter than 0°K emit thermal radiation. They also absorb thermal radiation emitted by their surroundings. The difference in the total amount of radiation emitted and absorbed by a body at any given moment may result in a net heat transfer which will produce a change in the temperature of that body.		All bodies which are hotter than 0°K emit thermal radiation. They also absorb thermal radiation emitted by their surroundings. The difference in the total amount of radiation emitted and absorbed by a body at any given moment may result in a net heat transfer which will produce a change in the temperature of that body.
Line 19:		Line 18:

	Radiant heating systems include:		Radiant heating systems include:
−	*Underfloor heating systems.	+
−	*Wall heating systems.	+	* Underfloor heating systems.
−	*Radiant ceiling panels.	+	* Wall heating systems.
−	*Integrated service modules.	+	* Radiant ceiling panels.
−	*Gas fired heated tubes.	+	* Integrated service modules.
−	*Gas powered ceramic burners.	+	* Gas fired heated tubes.
−	*Local electric heaters.	+	* Gas powered ceramic burners.
−	*Open fires.	+	* Local electric heaters.
		+	* Open fires.

	Some radiant heating systems also heat by convection, for example hot water radiators, often found in domestic buildings, radiate heat directly to their surroundings, but also draw air through heated elements resulting in convective heating.		Some radiant heating systems also heat by convection, for example hot water radiators, often found in domestic buildings, radiate heat directly to their surroundings, but also draw air through heated elements resulting in convective heating.
Line 33:		Line 33:

	Compared to other forms of heating, radiant heating (depending on the system used) can be:		Compared to other forms of heating, radiant heating (depending on the system used) can be:
−	*More healthy, separating heating from ventilation, and so reducing problems associated with dust, pollen and other pollutants.	+
−	*More durable.	+	* More healthy, separating heating from ventilation, and so reducing problems associated with dust, pollen and other pollutants.
−	*More comfortable, giving a more even temperature distribution.	+	* More durable.
−	*More instantaneous.	+	* More comfortable, giving a more even temperature distribution.
−	*Space saving and unobtrusive.	+	* More instantaneous.
−	*Quieter.	+	* Space saving and unobtrusive.
−	*Less expensive to run in certain situations. Low temperature systems in particular can run at a lower overall temperature than conventional heating systems whilst still achieving comfortable conditions.	+	* Quieter.
−	*Easier to maintain.	+	* Less expensive to run in certain situations. Low temperature systems in particular can run at a lower overall temperature than conventional heating systems whilst still achieving comfortable conditions.
−	*More directed.	+	* Easier to maintain.
		+	* More directed.

	Radiant heating also has less impact on air moisture content than other heating methods.		Radiant heating also has less impact on air moisture content than other heating methods.

	However, depending on the system adopted:		However, depending on the system adopted:
−	*High temperature electric radiant heaters can be expensive to run.	+
−	*It can impose restrictions on floor and wall coverings.	+	* High temperature electric radiant heaters can be expensive to run.
−	*It can be expensive to install.	+	* It can impose restrictions on floor and wall coverings.
−	*It can be less effective at cooling, and there can be condensation issues.	+	* It can be expensive to install.
−	*There can be poor familiarity amongst designers and installers.	+	* It can be less effective at cooling, and there can be condensation issues.
−	*It can be difficult to retrofit.	+	* There can be poor familiarity amongst designers and installers.
−	*It can be difficult to repair.	+	* It can be difficult to retrofit.
		+	* It can be difficult to repair.

	= Find out more =		= Find out more =

	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===
−	*Air handling unit.	+
−	*Approved documents.	+	* Air handling unit.
−	*Building services.	+	* Approved documents.
−	*Building services engineer.	+	* Building services.
−	*Building regulations.	+	* Building services engineer.
−	*Cold stress.	+	* Building regulations.
−	*Cooling.	+	* Co-heating test.
−	*Corrosion in heating and cooling systems.	+	* Cold stress.
−	*Fan coil unit.	+	* Cooling.
−	*Heating.	+	* Corrosion in heating and cooling systems.
−	*Heat pump.	+	* Fan coil unit.
−	*Heat recovery.	+	* Heating.
−	*Heat stress.	+	* Heat pump.
−	*Heat transfer.	+	* Heat recovery.
−	*HVAC.	+	* Heat stress.
−	*Radiation.	+	* Heat transfer.
−	*Thermal comfort.	+	* HVAC.
−	*Underfloor heating.	+	* Radiation.
		+	* Thermal comfort.
		+	* Underfloor heating.

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Designing Buildings at 14:39, 25 March 2015

2015-03-25T14:39:25Z

← Older revision		Revision as of 14:39, 25 March 2015
Line 74:		Line 74:
	*Radiation.		*Radiation.
	*Thermal comfort.		*Thermal comfort.
		+	*Underfloor heating.

	[[Category:Products_/_components]]		[[Category:Products_/_components]]

Designing Buildings at 11:10, 11 March 2015

2015-03-11T11:10:43Z

Designing Buildings: Created page with " To help develop this article, click ‘Edit this article’ above. ---- Heat transfer mechanisms include: Radiation. Convection. Conduction. Phase change. All bodies whic..."

2015-03-11T11:05:18Z

Created page with " To help develop this article, click ‘Edit this article’ above. ---- Heat transfer mechanisms include: *Radiation. *Convection. *Conduction. *Phase change. All bodies whic..."

New page

To help develop this article, click ‘Edit this article’ above.

----

Heat transfer mechanisms include:
*Radiation.
*Convection.
*Conduction.
*Phase change.

All bodies which are hotter than 0°K emit thermal radiation. They also absorb thermal radiation emitted by their surroundings. The difference in the total amount of radiation emitted and absorbed by a body at any given moment may result in a net heat transfer which will produce a change in the temperature of that body.

Solar radiation may be considered to include the ultra violet, visible and near or short wave infra-red wavebands. Most 'terrestrial' radiation, emitted by bodies at normal temperatures on earth, occurs within the far or long wave infra-red wavebands.

Radiant heat transmits in straight lines, only warming surfaces that are ‘visible’ to the source. However, these surfaces in turn re-radiate heat and warm air adjacent to them by convection. This allows heat from a radiant source to distribute through a space. Because it is directly heating, rather than heating the air (as in convective heating), it can be more efficient, particularly in large spaces, in spaces with poor insulation or in unenclosed or semi-enclosed spaces.

Radiant heating systems tend either to be low temperature systems spread over large areas, or high temperature localised systems.

Radiant heating systems include:
*Underfloor heating systems.
*Wall heating systems.
*Radiant ceiling panels.
*Integrated service modules.
*Gas fired heated tubes.
*Gas powered ceramic burners.
*Local electric heaters.
*Open fires.

Some of these radiant heating systems also heat by convection, for example hot water radiators, often found in domestic buildings, which radiate heat directly to their surroundings, but also draw air through heated elements resulting in convective heating.

Water-based systems such as underfloor heating can be used to provide cooling as well as heating. Radiant heating can incorporate renewable energy sources such as solar thermal panels, solar photovoltaics, ground source heat pumps, air source heat pumps and so on. They may also be used in combination with thermal mass and night-time purging.

Compared to other forms of heating, radiant heating (depending on the system used) can be:
*More healthy, separating heating from ventilation, and so reducing problems associated with dust, pollen and other pollutants.
*More durable.
*More comfortable, giving a more even temperature distribution.
*More instantaneous.
*Space saving and unobtrusive.
*Quieter.
*Less expensive to run in certain situations. Low temperature systems in particular can run at a lower overall temperature than conventional heating systems whilst still achieving comfortable conditions.
*Easier to maintain.
*More directed.

It also has less impact on air moisture content than other heating methods.

However, depending on the system adopted:
*High temperature electric radiant heaters can be expensive to run.
*It can impose restrictions on floor and wall coverings.
*It can be expensive to install.
*It can be less effective at cooling, and there can be condensation issues.
*There can be poor familiarity amongst designers and installers,
*It can be difficult to retrofit.
*It can be difficult to repair.

= Find out more =

=== Related articles on Designing Buildings Wiki ===
*Air handling unit.
*Approved documents.
*Building services.
*Building services engineer.
*Building regulations.
*Cold stress.
*Cooling.
*Corrosion in heating and cooling systems.
*Fan coil unit.
*Heating.
*Heat pump.
*Heat recovery.
*Heat stress.
*Heat transfer.
*HVAC.
*Radiation.
*Thermal comfort.

[[Category:Products_/_components]]

← Older revision		Revision as of 11:10, 11 March 2015
Line 12:		Line 12:
	All bodies which are hotter than 0°K emit thermal radiation. They also absorb thermal radiation emitted by their surroundings. The difference in the total amount of radiation emitted and absorbed by a body at any given moment may result in a net heat transfer which will produce a change in the temperature of that body.		All bodies which are hotter than 0°K emit thermal radiation. They also absorb thermal radiation emitted by their surroundings. The difference in the total amount of radiation emitted and absorbed by a body at any given moment may result in a net heat transfer which will produce a change in the temperature of that body.

−	Solar radiation may be considered to include the ultra violet, visible and near or short wave infra-red ~~wavebands~~. ~~Most~~ 'terrestrial' radiation, emitted by bodies at normal temperatures on earth, ~~occurs within the~~ far or long wave infra-red ~~wavebands~~.	+	Solar radiation may be considered to include the ultra violet, visible and near or short wave infra-red radiation. However, most 'terrestrial' radiation, emitted by bodies at normal temperatures on earth, is far or long wave infra-red radiation.

	Radiant heat transmits in straight lines, only warming surfaces that are ‘visible’ to the source. However, these surfaces in turn re-radiate heat and warm air adjacent to them by convection. This allows heat from a radiant source to distribute through a space. Because it is directly heating, rather than heating the air (as in convective heating), it can be more efficient, particularly in large spaces, in spaces with poor insulation or in unenclosed or semi-enclosed spaces.		Radiant heat transmits in straight lines, only warming surfaces that are ‘visible’ to the source. However, these surfaces in turn re-radiate heat and warm air adjacent to them by convection. This allows heat from a radiant source to distribute through a space. Because it is directly heating, rather than heating the air (as in convective heating), it can be more efficient, particularly in large spaces, in spaces with poor insulation or in unenclosed or semi-enclosed spaces.

−	Radiant heating systems tend either to be low temperature systems spread over large areas, or high temperature localised systems.	+	Radiant heating systems tend either to be low-temperature systems spread over large surface areas, or high temperature localised systems.

	Radiant heating systems include:		Radiant heating systems include:
Line 28:		Line 28:
	*Open fires.		*Open fires.

−	Some ~~of these~~ radiant heating systems also heat by convection, for example hot water radiators, often found in domestic buildings, ~~which~~ radiate heat directly to their surroundings, but also draw air through heated elements resulting in convective heating.	+	Some radiant heating systems also heat by convection, for example hot water radiators, often found in domestic buildings, radiate heat directly to their surroundings, but also draw air through heated elements resulting in convective heating.

−	Water-based systems such as underfloor heating can be used to provide cooling as well as heating. Radiant heating can incorporate renewable energy sources such as solar thermal panels, solar photovoltaics, ground source heat pumps, air source heat pumps and so on. They may also be used in combination with thermal mass and night-time purging.	+	Water-based systems such as underfloor heating can be used to provide cooling as well as heating. Radiant heating systems can incorporate renewable energy sources such as solar thermal panels, solar photovoltaics, ground source heat pumps, air source heat pumps and so on. They may also be used in combination with thermal mass and night-time purging.

	Compared to other forms of heating, radiant heating (depending on the system used) can be:		Compared to other forms of heating, radiant heating (depending on the system used) can be:
Line 43:		Line 43:
	*More directed.		*More directed.

−	It also has less impact on air moisture content than other heating methods.	+	Radiant heating also has less impact on air moisture content than other heating methods.

	However, depending on the system adopted:		However, depending on the system adopted:
Line 50:		Line 50:
	*It can be expensive to install.		*It can be expensive to install.
	*It can be less effective at cooling, and there can be condensation issues.		*It can be less effective at cooling, and there can be condensation issues.
−	*There can be poor familiarity amongst designers and installers,	+	*There can be poor familiarity amongst designers and installers.
	*It can be difficult to retrofit.		*It can be difficult to retrofit.
	*It can be difficult to repair.		*It can be difficult to repair.