Heat exchange – With adjustor for heat – or exchange material – flow
Patent
1976-01-08
1978-09-19
Myhre, Charles J.
Heat exchange
With adjustor for heat, or exchange material, flow
62 3, 126270, 219 1081, F28F 1302, F28F 1316
Patent
active
041146859
ABSTRACT:
A method and apparatus are provided for increasing the heat transfer efficiency of a heat exchanger by utilizing a high intensity RF field. Either an ion stream generated by the RF field or the RF field itself results in the efficiency increase and the rate at which the fluid acquires energy from the heat exchanger is enhanced to the extent that the boundary layer normally present at the walls of the heat exchanger which impedes the transfer of heat from the heat exchanger to the fluid breaks down during this process. The RF technique is utilized in one unique application for increasing the efficiency of solar energy receiver which operate at temperatures exceeding 1,500.degree. F in that the system eliminates arcing which would occur due to the high temperatures involved, if electrostatic (D.C.) ion spray devices were used. Arcing elimination is achieved both by the use of RF energy and by shielding the RF electrode or probe from contact with the heat transfer fluid with a dielectric member through which the RF field penetrates. In one embodiment a broad spectrum high voltage RF signal is generated by a Tesla coil to produce the RF signal. Alternatively, pulsed high RF energy of a single frequency may be used. This energy may be generated by a conventional magnetron and may be transmitted by a wave guide with a reentrant cone at the front of the solar receiver so that both focused solar energy and the RF energy impinge on the heat exchanger from the same direction.
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Misek Victor A.
Schwartz Jacob
Etlinger Louis
Myhre Charles J.
Richter Sheldon
Sanders Associates Inc.
Tendler Robert K.
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