Electric heating – Heating devices – Combined with diverse-type art device
Patent
1980-03-03
1983-07-26
Bartis, A.
Electric heating
Heating devices
Combined with diverse-type art device
165160, 219299, 219306, 219320, 219368, 219374, 219376, 219382, H05B 382, F24H 110, F28F 922
Patent
active
043956181
ABSTRACT:
A circulation heater for heating a fluid, particularly a liquid such as oil, includes an imperforate heavy-duty steel tubular body closed at both ends and having internal vanes establishing a plurality of separated longitudinally - extending chambers therein. The vanes are ported to establish a fluid flow path serially through the chambers from an inlet communicating with a first chamber to an outlet communicating with a last chamber. One or more metal-sheathed electric heating elements are located within each chamber and the chambers and heating elements therein are so arranged and designed, for example, by making the chambers of uniform transverse cross-sectional area and placing different numbers of heating elements of identical transverse cross-sectional area in each chamber, that the velocity of the fluid increases as it flows from the inlet to the outlet. The watt density of the heating elements in the respective chambers is correlated to the velocity of the fluid flowing through the chamber and temperature of the fluid in the chamber to prevent overheating of the fluid.
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"Chromalox Circulation Heaters"; Manual PE-109; 1976; Edwin L. Wiegand Division, Emerson Electric Co., Pittsburgh, Penna. 40 pp.
Bartis A.
Emerson Electric Co.
Williams Michael
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