Infrared Heating Principles

You may be asking what is Solamagic Infrared heating and how does it work? What are the benefits of Infrared heating lamps?

Solamagic heaters utilise Infrared heat lamps. Infrared heat lamps provide the following key benefits when used for area or space heating.

Key benefits of Solamagic heaters with Philips infrared lamps:

Features

Benefits

Instant heat

Full emitted power within milliseconds after switch on.

No emissions or pollution

Clean and environmentally friendly

Quartz envelope for infrared halogen lamps

Heat shock resistant and safe

90% of the energy is transmitted as infrared heat

Efficient and economical heat source

Dimmable

Output accurately controllable from 0 to 100% to match your needs

Infrared halogen technology

No blackening of the bulb and so no depreciation of infrared emission during lifetime

Long lifetime

Low maintenance

Same optical properties as light

Heat can be focused by reflectors

Compact design

Allows design of compact heat sources and systems

Heating Principles

To understand how Solamagic Infrared heating works one needs to consider the three main heating methods or principles; conduction, convection and radiation

Conduction

Heat transfer is by direct contact between the source and the object. On your stove top the metal pot or pan is in contact with the hot plate element, heat transfers from the element to the pot and to your dinner. This method requires good surface contact and some time for the heat to transfer from the energy source to the receiver.

Convection

Heat transfer is by a flow of liquid or gas which is itself heated by a heat source. A gas powered patio heater application is a good example. The heat from combustion of the gas warms the adjacent air, this air then needs to physically move to you, the receiver, so that you feel the temperature difference and start to feel warmer. This method requires good air circulation and enclosure of the heated air to be effective as the heated air is likely to rise and be blown away by draughts in open space areas.

Radiation

Heat transfer is by the emission of radiation from a hotter object such as the sun, an open fire or an infrared lamp to its cooler surrounding environment. Objects which receive this radiation from the heat source absorb it and become hotter.

Solamagic heaters using Philips infrared lamps use this radiation principle. They directly heat an object or person at which they are directed without heating the surrounding air. This is what makes them highly efficient heat sources.

Infrared within the optical spectrum

The infrared part of the optical spectrum is split into three parts:

  • Short wave: IR-A
  • Medium wave: IR-B
  • Long wave: IR-C

Solamagic heaters with Philips infrared lamps have a broad spectrum (see graph below), but most of the radiation they produce is in the IR-A part. For most domestic and commercial heating applications this is the region that gives the highest heating efficiency.

The radiation in the three wavelength ranges has a number of differences which are shown in the table below.

INFRARED WAVE

SHORT WAVE

MEDIUM WAVE

LONG WAVE

Emitter

Infrared halogen & incandescent lamp

Quartz emitter

Resistance

Material

Tungsten coil in sealed quartz tube

Fe-Cr-Al alloy in quartz tube

Fe-Cr-Al alloy in closed steel tube

Radiant efficiency

92%

60%

40%

Switch ON/OFF time (90% output)

1 sec

30 sec

5 min

Emission peak

 

1.2 µm

2.2 µm

4.0 µm

Visible

6%

0.5%

0.05%

IR-A

34%

3.5%

1%

IR-B

50%

50%

14%

IR-C

10%

46%

85%

Colour temperature

2500 K

1300 K

800K

Heating principle

Radiation

Radiation & convection

Convection

Air draught sensitivity

No

High

Very high

Focusing with reflectors

Good focusing & recommended

Possible

Not relevant

Colour sensitivity

 

High

Medium

Low

This table shows that infrared emitters (heat sources) radiate their energy over a range of wavelengths. The main range Solamagic heaters with infrared lamps mainly emit radiation is in the shorter wavelengths. This means that medium and long wave emitters (e.g. steel tube and ceramic radiators) have a higher thermal inertia (are slower to heat up) and lower temperature (less heat to transfer) than our short wave infrared lamps.

Contact Details

Address:
PO Box 6228, West Gosford NSW 2250 Australia

Email:
info@solamagic-australia.com.au

Toll Free:
1300 SOLAMAGIC or
1300 765 262

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