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In traditional
Convection Heating a heating body is used to heat up the air, which
then distributes heat as it flows over the surfaces of the objects
in the room (walls, furniture, etc.). A radiant heating panel, however,
distributes heat mainly by radiating it, just like the Sun! Thus,
when the flow of radiated heat hits objects (like walls, the floor,
or furniture), while a small part is reflected (approx. 15%), the
majority (approx. 85%) is absorbed by the objects encountered. At
this point in the process, radiated energy turns into heat energy
(the objects heat up) and as the objects are hotter than the
surrounding air, heat is transmitted by convection - the air is
heated by all the objects in the room.
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warm air (up to
30°C)
cold walls, ceiling, floor (up to
10°C)
TOO COLD |
cold air (up to
5°C)
warm walls, ceiling, floor (up to 25°C)
COLD |
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fresh air (up to
15°C)
warm walls, ceiling, floor (up to 26°C)
TOLERABLE |
warm air (20°C)
warm walls, ceiling, floor (20°C)
PERFECT !!!
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Advantages of
Radiant Heating Panels:
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The surface of the radiant
panel radiates a flow whose spectrum lies mostly in the band of
wavelengths greater than 5 micrometers, and is thus absorbed to a large
degree by the human body: people are thus heated in a manner similar to
objects.
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The panels are equipped with
flat heating surface which guarantees heat emission up to 180°C angle
(so called hemispheric emission).
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When the radiant flow heats
objects up to a level of 20-22°C, heat comfort can be achieved even
with air temperatures of 18-19°C, and this leads to energy savings of
at least 18-24%.
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Radiant panels make
temperature distribution in a room vastly more vertically balanced –
only a -1 to -2 degree difference between the floor and the ceiling (for
convection heating, meanwhile, the difference is given as 1°C per mere
30-50 cm of height).
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There is less flow
(whirling) of air in the heated space, so dust particles also whirl
less, thus reducing the risk for a number of illnesses and
allergies—asthma, mucous membrane infection, etc.
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A higher wall temperature
means a lower possibility for surface condensation; room humidity is not
lowered.
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Glass is not
“transparent” (we might say “transthermant”) when it
comes to heat emission with wavelengths over 3 and thus the radiant flow
is not lost through windowpanes.
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The panels do not need any
maintenance.
Radiant
Heating Panel Applications:
We separate radiant panel
applications into two categories:
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Systematic Heating -
in areas where we expect a high level of comfort and which are well
insulated e.g. public and administrative offices, schools, cultural
facilities, show-rooms medical arrangements commercial and sales centres
manufacturing halls and warehouses.
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Interrupted Heating -
in areas where heating is only required for interrupted short periods
and standard heating methods become too expensive to employ. In these
cases the radiant heating, on activation, immediately creates a feeling
of warmth through direct heating of clothes and exposed skin.
Every space in which the panels
are installed can be independently regulated. In large spaces, even the
individual sections of the space can be regulated. The standard regulation
method is to control temperature using room thermostats and by switching off
of the system at selected times. The heating circuits are protected against
overload separately in the distribution board, and their overall circuit
must include a two-pole circuit breaker. The regulation component must
correspond with the product’s coverage level (where a relatively high
degree of protection against dust and water is needed, one of the industrial
room thermostats must be used).
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