The major problem of conventioanl thermal insulation (rock wool, glass, PU)
is that it only takes into account the element of thermal conductivity whereas this
element is also significantly impacted by emissivity , solar energy transmission,
reflection, radiance and convection.
In absolute terms, the thermal conductivity of MetalTec TC, that is to say the
capacity of the material alone to let go of heat, is much higher than rock wool,
which is laboratory tested, in an oven with high temperatures and zero humidity.
This measure does not take into account the effect of moisture and humidity in
calculation of thermal conductivity of rock wool: it should be known that “lambda”
or K of the rockwool (thermal conductivity coefficient) is calculated at high,
constant temperatures in an autoclave , with a humidity of zero %. The thermal
conductivity coefficient of rock wool significantly decreases with ambient humidity.
In fact, at an ambient humidity of 80%, rock wool loses about 80% of its insulating
power, and this is irreversible!
Imagine what happens in case of heavy rain or any cladding outdoors.
Only conductivity is measured here, which is the only property of rockwool, whereas
TC performs well in other registers: convection, reflectivity, emissivity, radiance
and conductivity; restitution of the temperature variation on site, infrared pyrometer
measurements are also distorted by the reflective properties of TC. Best way of measuring
temperature on a TC surface is contact probe thermometer.
The pure insulation properties of our product can therefore only be adequately measured
by comparing the effect of the insulation on the contents of the receptacle. (energy retention)
Of course, the added qualities of TC are: no maintenance, no rust no CUI, perfect PP,
less volume, less weight, very economical spray application, no aluminum shell, insensitive
to humidity, total inspectability and maintenance at all times, no climate effect, no CUI
(corrosion under insulation) and guaranteed long term resistance.
In short, the following formula is a guideline when doing calculations:
MetalTec TC Insulating Formula = Reflectivity + Conductivity + Convection +
Heat transmission = Project Parameters – MetalTec TC Insulating
Formula Without examining all parameters of the above, the coating is not
compared fairly, nor does it explain the differentials found on applications.
The spreadsheet calculations that I have derived are only a forecasting method to
compare conventional insulation and the coating system and to effectively forecast
the amount of coating needed to produce the result needed.
Actual field study has shown that the forecasted calculations are very similar,
although may differ due to other variables unknown.
This calculation study now allows MetalTec TC to be effectively
forecasted for engineering study. This calculation however only is applicable
to MetalTec TC Coating. Other conventional insulating coatings such as rooftop
derivatives cannot be examined by this forecasting method as they do not employ
the same insulating principles or technology that TC employs.