Claims
- 1. A heat pipe assembly for installation in a permafrost or similar environment comprising:
- a heat pipe element including a tubular container having a charge of working fluid therein, said container comprising a normally lower portion of a first predetermined wall thickness, and a normally upper portion of a second predetermined wall thickness which is at least approximately equal to said first wall thickness, said lower container portion wall being sufficiently thin to be effective in transmitting heat, and said upper container portion wall being sufficiently strong and thick to allow safe processing work thereon; and
- a heat exchanger including a radiator comprising a tubular body, and heat transferring fins affixed thereto, said upper container portion of said second wall thickness having threads provided on a predetermined part thereof, and said tubular radiator body having threads complementary to said container threads provided thereon, said radiator being attached to said predetermined part of said upper container portion by engaging said radiator threads with said container threads.
- 2. The invention as defined in claim 1 wherein said container and radiator threads are selected to be of a depth and pitch whereby a predetermined heat transfer interface surface area is obtained between said engaged container and radiator threads.
- 3. The invention as defined in claim 2 further comprising a sustance of predetermined thermal conductivity generally filling any remaining space between said engaged container and radiator threads, said substance including a lubricant-preservative-thermal grease.
- 4. The invention as defined in claim 2 wherein said second wall thickness is greater than said first wall thickness, said lower container portion wall being thinner to be more effective in transmitting heat, and said upper container portion wall being thicker to be more strong and allow safer processing work thereon.
- 5. The invention as defined in claim 3 further comprising at least a normally upper seal means provided at the normally upper end of said tubular radiator body to prevent entry of moisture into any space between said engaged container and radiator threads.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 462,916 filed 22 Apr. 1974, now U.S. Pat. No. 4,036,286, which is a continuation in part of application Ser. No. 303,221 filed Nov. 2, 1972, now U.S. Pat. No. 3,823,769.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
280540 |
Weatherly |
Jul 1883 |
|
3572426 |
Edwards |
Mar 1971 |
|
3739234 |
Bylund et al. |
Jun 1973 |
|
3884293 |
Pessolano et al. |
May 1975 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
22,579 OF |
Jan 1900 |
UK |
Divisions (1)
|
Number |
Date |
Country |
Parent |
462916 |
Apr 1974 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
303221 |
Nov 1972 |
|