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Notes on radiant heating.

Page 4 of 5. 41 articles on how infrared heating works, what it costs to run, and what it is like to live with.

The UL Certificate of Compliance for the carbon-fibre heating film, held up to the camera
18 July 2023

SafeTech EGS carbon fibre heating film receives UL 2683 certification

Our mains-voltage carbon-fibre heating film is certified to UL 2683, the standard for heating elements. What it tests, and why full-surface film is harder.

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PowerBoard 250 panels fitted into a plasterboard ceiling grid
5 July 2023

PowerBoard is BEAB IEC 60335-1 certified

PowerBoard ceiling heating holds Intertek BEAB certification to IEC 60335-1, the safety standard for household appliances. What it actually covers.

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A finished living room in a converted German winery heated by wall elements
26 April 2023

Radiant heating and humidity: the link most people miss

Warm surfaces don’t reach dew point, so they don’t condense. How radiant heating keeps humidity at 40 to 60% and why that matters for mould and comfort.

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A labelled cross-section of the build-up: cement matrix, thermal insulation, putty, temperature protection device, heating film and surface finish
7 April 2023

Proximity to surface: the overlooked half of heating efficiency

Boilers and heat pumps make heat far from where it’s used, and every metre of pipe costs energy. Why heat made millimetres from the surface changes the sums.

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A heated garment showing the carbon-fibre element integrated into clothing
21 February 2023

How clothing plays a role in the thermostat wars

A suit and a summer dress can be six degrees apart in comfort. What clo values are, and what clothing means for setting an office temperature.

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A finished open-plan office with heating built into the floor
3 January 2023

Why do some people run hot and others cold?

Metabolism explains most of the office thermostat war. How metabolic rate, activity and body build change the heat a person makes, and why no setting suits all.

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An illustration of heat escaping a living room through a window, drawn as red arrows leaving the glass
29 November 2022

Air speed in the built environment

Too little air movement brings mould and stale air; too much feels cold. The comfortable range, why draughts cost so much energy, and what heating changes.

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Close-up of the non-woven carbon-fibre veil used in the heating element
23 November 2022

Why use carbon fibre to heat buildings?

Carbon fibre makes a heating element thin, full-surface, drillable, non-combustible and durable for twenty years of use. Why the material decides the product.

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A diagram contrasting still air at 3 °C with wind chill, where the same air feels like minus 2 °C
7 November 2022

Wind chill, a pleasant breeze, and severe dehydration

Air speed multiplies heat exchange, so the same breeze can comfort you or endanger you depending on the temperature. Why wind chill doesn’t cool the air.

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Seven figures standing along the ASHRAE thermal sensation scale from minus 3, cold, to plus 3, hot, with the figure at 0, neutral, relaxed under a heated ceiling
24 October 2022

Thermal comfort explained: thermal neutrality, ASHRAE 55 and why radiation matters

Thermal comfort explained: the six factors, the ASHRAE 55 comfort zone, thermal neutrality, clo values, PMV and PPD, and why warm surfaces feel warmer.

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