 Temperature processing module |
| This invention is concerned with a module for the temperature control of a material substrate. The ... |
|
| Method and installation for supplying a sewing machine |
| The present invention, in a broad aspect, provides an apparatus between a sewing (or joining) ... |
|
| Use of calcium halide-water as a heat extraction medium for energy recovery from hot rock systems |
| OF THE INVENTION In accordance with the present invention, in a hot rock geothermal system, for ... |
|
| Apparatus for shooting a curve ball |
| OF THE DISCLOSURE The apparatus of this invention is described hereinafter in detail in ... |
|
| Kachelofen |
| We claim: 1. A room-heating stove comprising: a combustion chamber; a plurality of coaxially nested ... |
|
| Wood burning furnace |
| The features of the present invention solve many of the problems associated with the prior art ... |
|
| Frying pan |
| What is claimed is: 1. A frying pan comprising: an upward-facing pan border surrounding a pan ... |
|
| Heating and cooling lunch box with intake air opening |
| An object of this invention is to provide a heating and cooling lunch box which can eliminate the ... |
|
| Door for a high-temperature oven |
| OF PREFERRED EMBODIMENTS A high-temperature oven, in particular a laboratory high-temperature oven,... |
|
| Method and assembly for camouflaging at least one building |
| AND OBJECTS One object of the present invention is to provide an uncomplicated, economical and ... |
|
|
Passive solar energy water preheat system using non-freezing heat transport mediums
| Details |
Inventors: Sigworth, Jr., Harry W.;
Assignee: Chevron Research Company (San Francisco, CA)
Primary Examiner: Jones; Larry
Assistant Examiner:
Attorney, Agent or Firm: Newell; D. A., Keeling; E. J., Evans; R. H.
A sealed thermosiphoning solar energy system is disclosed which uses oil as a nonfreezing transport fluid. The oil is heated in an absorber exposed to the sun's radiation, passes through a check valve and into thermal exchange with a second fluid. Expansion means are provided to prevent excessive pressure buildup in the system. |
|
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, and to FIG.
1 in particular, there is shown a preferred embodiment of the present invention.
The system is basically comprised of a closed passive thermosiphon loop through which heat is transferred via a circulating transport liquid, such as a commercial heat transfer fluid, from an absorber exposed to the sun's radiation to a heat exchanger in thermal contact with a second fluid.
Under normal operating conditions, flow is maintained in a clockwise circulation pattern with respect to the thermosiphon loop shown in FIG.
1.
The flow of heat transport liquid is generally from the top of absorber 10 through line 12 to valve 14, from valve 14 through line 16 to heat exchange tubing 18, and from tubing 18 back to the absorber via line 20.
The second fluid, in turn, is heated by the circulating heat transfer fluid in housing 22.
The absorber 10 may be manufactured from a number of materials, although steel is the preferred construction material for use with an oil transport liquid.
Commercial oil heat transfer fluids, such as "Brayco 888", which do not freeze or boil within the potential extreme operating temperature ranges of -40.
degree.
F.
(-40.
degree.
C.
) to 400.
degree.
F.
(204.
degree.
C.
) are preferred heat transfer mediums.
Referring now to FIG.
2 of the drawings, there is shown a cross-section of a preferred valve for use in this invention.
As shown therein, there is provided a housing 50 having lower and upper ports 52 and 54, respectively, for the passage of liquid therethrough.
There is also provided a spherically shaped valve seat 56 having an aperture through which all fluid passing through the valve must flow.
Although the valve seat is shown as a separate part in the figure, the seat may be manufactured directly from the housing walls.
If the valve seat is separately fabricated, as indicated in the drawing, it can be secured to the inner housing walls in any conventional manner.
A spherical valve member 58 is movably disposed within the housing above valve seat 56
|
|
Heat Accumulators 
