초록 ▼

An isothermal heat pipe system for transferring heat from a primary fluid, such as geothermal water or steam, municipal water system, solar heated water, or the like, to another medium to be heated isothermally, such as a road or bridge deck surface, includes an elongated enclosed chamber with a vol

An isothermal heat pipe system for transferring heat from a primary fluid, such as geothermal water or steam, municipal water system, solar heated water, or the like, to another medium to be heated isothermally, such as a road or bridge deck surface, includes an elongated enclosed chamber with a volatile liquid, such as ammonia or freon, contained therein, a heat exchanger tube positioned to run through the chamber in contact with the volatile liquid, and elongated distribution pipes connected in fluid-flow relation to and extending upwardly from the upper portion of the common chamber above the level of the volatile fluid and extending into divers portions of the medium to be heated in spaced-apart relation to each other in such a manner that there is a continuous downward gradient in each of the distributor tubes from the distal end thereof to the chamber. The primary heated fluid is circulated through the heat exchanger tubes, and a wick material is attached to the external surface of the heat exchanger tube to increase surface area for transfer of heat from the heated primary fluid in the heat exchanger tube to the volatile fluid in the chamber around the heat exchanger tube.

대표청구항 ▼

Apparatus for transferring heat from a primary heated fuild isothermally to divers portions of a different medium to be heated, comprising: container means for containing a volatile liquid in an enclosed chamber; a volatile liquid in said container means and only partially filling said container mea

Apparatus for transferring heat from a primary heated fuild isothermally to divers portions of a different medium to be heated, comprising: container means for containing a volatile liquid in an enclosed chamber; a volatile liquid in said container means and only partially filling said container means such that a portion of the interior of said container means extends above the surface of said volatile liquid; distribution means for distributing vapor of said volatile liquid to divers portions of said medium to be heated, said distribution means including a plurality elongated extensions of said container means connected in fluid-flow relation to and extending outwardly from said portion of said container means above the surface level of said volatile liquid in said container means into divers portions of said medium to be heated in spaced-apart relation to each other in such a manner that there is a continuous downward gradient in each of said extensions from the distal end thereof to said container means; and heat exchanger means in said container means for transferring heat from the primary heated fluid to the volatile liquid in said container means. The method of transferring heat from a primary heated fluid isothermally to divers portions of a pavement slab to be heated, comprising the steps of: positioning a container for containing a volatile liquid in an enclosed chamber adjacent to and lower than the pavement to be heated; placing a volatile liquid in the enclosed chamber of said container in such a manner as to only partially fill said chamber leaving a portion at the top of said chamber unfilled; positioning a plurality of elongated extensions of said container that are in fluid-flow communication with said portion of said chamber above the surface level of said volatile liquid in dispersed, spaced-apart relation in said pavement to be heated with a continuous downward gradient in each of said extensions from the distal end thereof to said chamber; circulating said heated primary fluid through a hollow conduit positioned inside said enclosed chamber in close physical contact with said volatile liquid to effect a heat transfer but not a fluid transfer from said primary fluid through said hollow conduit to said volatile fluid sufficient to cause at least a portion of said volatile liquid in said chamber to vaporize; and allowing the vapor to migrate from any portion of said container into any of said extensions as determined by the differential pressure gradients therein.