In order to increase the heat transfer of tubular heaters for the heating of air and gases tubular heaters are equipped with a steel strip coiled around the heater. Thus enlarging the surface area and increasing turbulences, finned tubular heaters can sustain a higher thermal loading than normal tubular heaters. The surface temperature decreases and the heaters become shorter. Therefore Turk and Hillinger finned tubular heaters should be applied where it is required to heat gases or air at temperatures where the differences between the heater and the medium should remain small.
The surface area of tubular heaters is enlarged by the fitting of finns to enable the heater to effiently heat air or gases. These heaters have a short lengh but a high power.
Channel air heaters for air-conditioning and drying apparatus are also available please see enclosed pdf with further information and technical details..
Turk and Hillinger air heaters type HRR consist of tubular heaters or finned tubular heaters assembled into a sheet metal housing made of zinc plated steel or stainless steel. According to the requirements given by the specification the housings can be adapted to various applications as per the illustrations indicated beside. For most applications finned tubular heating ele ments are used as their increased surface area allows low surface temperatures on the heating elements thus providing a low watt density and a long lifetime with reduced housing dimensions.
By means of electrical interlock it has to be assured that the heater can only be operated when a fan has been activated. In order to prevent the air filter from overheating and to avoid a too high outlet temperature the air heaters can be equipped with a thermostat and/or a temperature limitor.
Heater with exosed heating filament located onto ceramic former or mica strip with a sheet metal housing. For use only with upstream or downstream fan blowers.
We manufacture ceramic heating units type PK to heat up air up to 600° C. The ceramic heaters are available with or without metal casings.
The diameter range is from 13–85 mm for typical air volume from 2–100 m3/h.
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