Engine for conversion of thermal radiation to direct current

• US 4,658,171 A
• Filed: 07/15/1985
• Issued: 04/14/1987
• Est. Priority Date: 07/15/1985
• Status: Expired due to Fees

• Current Assignee: James M. Hawley
• Original Assignee: James M. Hawley
• Inventors: Hawley, James M.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US06/754,591
• Time in Patent Office: 638 Days
• Field of Search: 310/306, 310/307, 307/151
• US Class Current: 310/306
• CPC Class Codes: H02N 11/002 Generators

Abstract

The present invention is directed to an engine and method for converting heat energy to electrical current. The engine includes a heat source with a heat exchanger. Dipole antennas receive heat energy and immediately convert it to electrical current which is then rectified before flowing to a load.

Claims

1. An engine for converting thermal energy to electrical current comprising:

a. means for emitting thermal energy, said emitting means having a temperature no greater than 3500 degrees Centigrade and no less than 100 degrees Centigrade;

b. at least one dipole antenna having a length no greater than eight microns and no less than one micron, said antenna being located to receive energy from said emitting means, said antenna is turned to said emitting means by having a length of L=B/2T, where L=length, B=2.898×

10^-3 meters degrees Kelvin, and T=temperature of said emitting means in degrees Kelvin; and

,

c. an AC/DC rectifier means connected to said antenna, said rectifier means having a pair of output terminals for connecting to a load and providing full wave rectification.

2. An engine in accordance with claim 1 including a plurality of said antennas and said rectifiers and means for connecting in parallel the output terminals of said plurality of rectifiers.

3. An engine in accordance with claim 1 including plurality of said antennas and said rectifiers and means for connecting in series the output terminals of said plurality of rectifiers.

4. An engine in accordance with claim 1 including a plurality of said antennas and means for holding first and second of said antennas orthogonal with respect to one another.

5. The method of obtaining electrical current from a heat source, comprising the steps of:

a. maintaining said heat source at a relatively constant temperature between 100 degrees Centigrade and 3500 degrees Centigrade;

b. locating at least one dipole antenna for receiving heat radiation from said source, said antenna having a length between one micron and eight micron, said antenna being separated from said source at least by a distance sufficient to prevent degradation of said antenna due to intervening conduction and convection each of said antennas having a length of approximately L=B/2T, where L=length, B=2.898×

10^-3 meters degrees Kelvin, and T=temperature of said heat exchanger in degrees Kelvin;

c. rectifying the electrical current created in said antenna for use by a load; and

,

d. locating a heat exchanger between said heat source and said antenna.