Disadvantage of all electric air heating systems is a resistance element surface area which transfers heat to surrounding air. This transfer is carried out mainly by radiation with a very small contribution of forced or free convection. In consequence the temperature on heating element surfaces may range from 450 to 800 °C with normally used heater power ratings. These solutions are potentially hazardous due to possibility of initiating a fire, since they inevitably cause burning of dust contained in the air. Therefore they cannot be considered to be ecologically friendly. A solution proposed by Cemal Sp z o.o. pertains to application of slant cold rolling process technology. It ensures a very high pressure exerted by expanded external finning onto a tube type electric heating element. An excellent contact of surfaces of a bimetallic joint is provided due to this considerably high initial pressure. Large degree of external surface expansion ensures low temperature of external surface at high thermal efficiency of the heating element. Maximum temperature level not exceeding 140˚C guarantees that no dust particles are burned by a heating element. It may be then confirmed that an air heater equipped with those heating elements meets the required ecological criteria. Those finned resistance heating elements built into system of multiple panel heaters are the base for design of safe ecological duct systems used to distribute hot air to workstations, office as well as residential facilities. They may also be a basic component of portable electric efficient air heaters used to heat up manufacturing facilities, warehouses, commercial pavilions, hotels, hospitals, sport arenas, greenhouses and production line systems. We are ready to help you in selection of heating elements for your needs. We provide a flexible approach towards terms of delivery and pricing. We also do guarantee fast and timely execution of orders.

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