![]() As a category, the conventional heaters it tested that year slightly outperformed ceramic heaters in the areas of evenly heating all parts of a room and at holding the room at a steady temperature. The only significant difference it found was ceramic heaters were substantially more expensive. ![]() However, in its 1989 review, the testing organization did treat ceramic heaters as a separate category, as a response to manufacturer claims. Ĭonsumers Union has not found significant differences between ceramic and conventional heaters. In particular, manufacturers claimed ceramic heaters produced more heat than conventional ones, even when both were rated with the same heat output. In the 1980s, some manufacturers were making advertising claims that critics such as New York Times writer Matthew L. No fins are required for honeycomb disk heating elements. The air is heated as it flows through the holes. In another type of heating element, honeycomb disk, the block of ceramic is perforated with numerous holes. An electric current heats the block, which in turn heats the fins. These units contain a solid block of ceramic material with metal fins attached. Heating elements Ĭeramic fin is one type of heating element used in heaters. By 1989, approximately twenty percent of portable household heaters sold in the USA were ceramic heaters. Heater vendors first offered ceramic heaters in 1986. Ceramic heaters also have thermostats which switch power to the PTC array on and off in response to the temperature of the room, like other types of heater. The ceramic, on the other hand, increases its resistance sharply at the Curie temperatures of the crystalline components, typically 120 degrees Celsius, and remains below 200 degrees Celsius, providing a significant safety advantage. Differences from other electric heaters Įlectric heating elements made of resistance wire also have a positive temperature coefficient of resistivity, but do not increase their resistance enough to be self-regulating they are typically used with the wires red-hot. A fan blowing across the fins heats the air. The ceramic elements are in contact with aluminium fins, thereby heating the fins up. ![]() PTC ceramic material is semi-conductive and when voltage is applied to it, the power decreases quickly as it reaches a certain temperature according to the particular composition of the ceramic. Ceramic heaters are usually portable and typically used for heating a room or small office, and are of similar utility to metal-element fan heaters. For components of heaters, see Heating element § Ceramic and semiconductor.Ī ceramic heater as a consumer product is a space heater that generates heat using a heating element of ceramic with a positive temperature coefficient (PTC). For radiant heaters, industrial and household, see Infrared heater. This article is about the household convection space heater. ![]()
0 Comments
Leave a Reply. |