Electric resistance heating devices – Heating devices – Combined with nonelectric heating means
Patent
1989-09-05
1992-07-21
Reynolds, Bruce A.
Electric resistance heating devices
Heating devices
Combined with nonelectric heating means
392308, 392311, 392314, 237 123C, 123 3, 126344, F27D 1100
Patent
active
051330415
ABSTRACT:
A method and an apparatus for transporting commodities, especially liquid commodities above their congealing temperature in a tanks or tank containers. At least a partial flow of hot exhaust gases of an internal combustion engine of a tank vehicle or tank container vehicle flows through a heat exchanger through which passes the heat transfer oil in a closed cycle and yields heat to the heat transfer oil and an electrically heated heat exchanger yields heat to the heat transfer oil and the heat transfer oil transfers heat to the commodity through a tank or tank container wall heat exchanger. The heat transfer oil is conducted in a closed cycle in a regulation circuit including the heat exchanger through which the exhaust gas passes and the electrical heat exchanger. The temperature of the heat transfer oil is controlled as a function of a variable reference and the variable reference is preset as a function of the temperature of the commodity to be transported and contained in the tank or tank container, so that the variable reference is always higher than a specified temperature of the commodity to be transported.
REFERENCES:
patent: 4125090 (1978-11-01), Masunaga et al.
patent: 4705214 (1987-11-01), Johnson
Lindenau Heinz-Herbert
Richter Gerhard
Hoang Tu
Reynolds Bruce A.
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