Robert C. DeVault - Knoxville TN, US David J. Wesolowski - Kingston TN, US
Assignee:
UT-Battelle, LLC - Oak Ridge TN
International Classification:
E21B 36/04
US Classification:
166302, 166 60
Abstract:
Apparatus for efficient heating of subterranean earth includes a well-casing that has an inner wall and an outer wall. A heater is disposed within the inner wall and is operable within a preselected operating temperature range. A heat transfer metal is disposed within the outer wall and without the inner wall, and is characterized by a melting point temperature lower than the preselected operating temperature range and a boiling point temperature higher than the preselected operating temperature range.
Triple-Effect Absorption Refrigeration System With Double-Condenser Coupling
Robert C. DeVault - Knoxville TN Wendell J. Biermann - Fayetteville NY
Assignee:
Martin Marietta Energy Systems, Inc. - Oak Ridge TN
International Classification:
F25B 1500
US Classification:
62476
Abstract:
A triple effect absorption refrigeration system is provided with a double-condenser coupling and a parallel or series circuit for feeding the refrigerant-containing absorbent solution through the high, medium, and low temperature generators utilized in the triple-effect system. The high temperature condenser receiving vaporous refrigerant from the high temperature generator is double coupled to both the medium temperature generator and the low temperature generator to enhance the internal recovery of heat within the system and thereby increase the thermal efficiency thereof.
Triple Effect Absorption Chiller Utilizing Two Refrigeration Circuits
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
F25B 700
US Classification:
62 79
Abstract:
A triple effect absorption method and apparatus having a high coefficient of performance. Two single effect absorption circuits are combined with heat exchange occurring between a condenser and absorber of a high temperature circuit, and a generator of a low temperature circuit. The evaporators of both the high and low temperature circuits provide cooling to an external heat load.
Robert C. DeVault - Knoxville TN Wendell J. Biermann - Fayetteville NY
Assignee:
Martin Marietta Energy Systems, Inc. - Oak Ridge TN
International Classification:
F25B 700
US Classification:
62 79
Abstract:
A seven-effect absorption refrigeration cycle is disclosed utilizing three absorption circuits. In addition, a heat exchanger is used for heating the generator of the low absorption circuit with heat rejected from the condenser and absorber of the medium absorption circuit. A heat exchanger is also provided for heating the generator of the medium absorption circuit with heat rejected from the condenser and absorber of the high absorption circuit. If desired, another heat exchanger can also be provided for heating the evaporator of the high absorption circuit with rejected heat from either the condenser or absorber of the low absorption circuit.
Method Of Reducing Chlorofluorocarbon Refrigerant Emissons To The Atmosphere
Robert C. DeVault - Knoxville TN Phillip D. Fairchild - Clinton TN Wendell J. Biermann - Fayetteville NY
Assignee:
The United States of America as represented by the United States Department of Energy - Washington DC
International Classification:
F17C 1100
US Classification:
62 463
Abstract:
A method is disclosed for reducing chloroflurocarbon (CFC) refrigerant emissions during removal or transfer or refrigerants from a vapor compression cooling system or heat pump which comprises contacting the refrigerant with a suitable sorbent material. The sorbent material allows for the storage and retention or the chlorofluorocarbon in non-gaseous form so that it does not tend to escape to the atmosphere where it would cause harm by contributing to ozone depletion. In other aspects of the invention, contacting of CFC refrigerants with sorbent material allows for purification and recycling of used refrigerant, and a device containing stored sorbent material can be employed in the detection of refrigerant leakage in a cooling system or heat pump.
Dual-Circuit, Multiple-Effect Refrigeration System And Method
Martin Marietta Energy Systems, Inc. - Oak Ridge TN
International Classification:
F25B 700
US Classification:
62476
Abstract:
A dual circuit absorption refrigeration system comprising a high temperature single-effect refrigeration loop and a lower temperature double-effect refrigeration loop separate from one another and provided with a double-condenser coupling therebetween. The high temperature condenser of the single-effect refrigeration loop is double coupled to both of the generators in the double-effect refrigeration loop to improve internal heat recovery and a heat and mass transfer additive such as 2-ethyl-1-hexanol is used in the lower temperature double-effect refrigeration loop to improve the performance of the absorber in the double-effect refrigeration loop.
Robert C. DeVault - Knoxville TN Benjamin W. McConnell - Knoxville TN Benjamin A. Phillips - Benton Harbor MI
Assignee:
Martin Marietta Energy Systems, Inc. - Oak Ridge TN
International Classification:
H02K 900
US Classification:
310 52
Abstract:
A hermetically sealed superconducting magnet motor includes a rotor separated from a stator by either a radial gap, an axial gap, or a combined axial and radial gap. Dual conically shaped stators are used in one embodiment to levitate a disc-shaped rotor made of superconducting material within a conduit for moving cryogenic fluid. As the rotor is caused to rotate when the field stator is energized, the fluid is pumped through the conduit.