Vadder
Davey J. Vadder, Manchester, MD US
Patent application number | Description | Published |
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20100052703 | ICE THICKNESS PROBE, ICE THICKNESS PROBE ASSEMBLY AND ICE THICKNESS MONITORING APPARATUS - An ice thickness probe includes a longitudinally-extending probe rod, an insulator casing and a sleeve. The probe rod is fabricated from an electrically-conductive material. The insulator casing is fabricated from an electrically-insulative material and is wrapped around, is in contact with and extends along the probe rod. The sleeve is fabricated from a stiff yet resilient material and is wrapped around, is in contact with and extends along the insulator casing. The insulator casing and the sleeve are concentrically disposed about the probe rod as viewed in cross-section. An ice thickness probe assembly includes a frame structure, a reference bar and at least one ice thickness probe. An ice thickness monitoring apparatus is used in a thermal storage coil having a tank containing water and a tube disposed in the water so that, when the thermal ice storage coil is energized, ice is produced and accumulates on the tube. | 03-04-2010 |
Davey J. Vadder, Westminster, MD US
Patent application number | Description | Published |
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20120061055 | HYBRID HEAT EXCHANGER APPARATUS AND METHOD OF OPERATING THE SAME - A hybrid heat exchanger apparatus includes a direct heat exchanger device and an indirect heat exchanger device and a method of operating the same encompasses conveying a hot fluid to be cooled from a hot fluid source through the indirect heat exchanger device to a cooling fluid distribution system. The hot fluid to be cooled is distributed from the cooling fluid distribution system onto the direct heat exchanger device. In a hybrid wet/dry mode, ambient air flows across both the indirect heat exchanger device and the direct heat exchanger device to generate hot humid air from the ambient air flowing across the direct heat exchanger device and hot dry air from the ambient air flowing across the indirect heat exchanger device. | 03-15-2012 |
20120067546 | HYBRID HEAT EXCHANGER APPARATUS AND METHOD OF OPERATING THE SAME - A hybrid heat exchanger apparatus having a heat exchanger device with a hot fluid flowing therethrough includes a cooling water distribution system and an air flow mechanism for causing ambient air to flow across the heat exchanger device. The cooling water distribution system distributes evaporative cooling water onto the heat exchanger device to wet only a portion of the heat exchanger device while allowing a remaining portion of the heat exchanger device to be dry. The air flow mechanism causes ambient air to flow across the heat exchanger device to generate hot humid air from the ambient air flowing across the wet portion of the heat exchanger device and hot dry air from the ambient air flowing across the remaining dry portion of the heat exchanger device. Methods are also described. | 03-22-2012 |
Davey Joe Vadder, Manchester, MD US
Patent application number | Description | Published |
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20110100593 | HYBRID HEAT EXCHANGE APPARATUS - A hybrid heat exchange apparatus for indirectly transferring heat between a process fluid and ambient air includes an evaporative heat transfer cell operative in a wet mode or a dry mode, a dry heat transfer cell and a fan. The air may bypass the dry heat transfer cell to flow through a first air passage or may flow through a second air passage through the dry heat transfer cell and in either event, then through the evaporative heat transfer cell. The air may partially flow through and partially bypass the dry heat transfer cell, and then through the evaporative heat transfer cell. The evaporative heat transfer cell optionally may include a direct contact evaporative heat exchanger. Manually or automatically controlling air flow based on ambient conditions provides efficient and economical control of the hybrid heat exchange apparatus, while avoiding problems in freezing conditions. | 05-05-2011 |
20120012292 | EVAPORATIVE HEAT EXCHANGE APPARATUS WITH FINNED ELLIPTICAL TUBE COIL ASSEMBLY - An improved finned coil tube assembly enhances evaporative heat exchanger performance, and includes tubes, preferably serpentine tubes, in the coil assembly. The tubes have a generally elliptical cross-section with external fins formed on an outer surface of the tubes. The fins are spaced substantially 1.5 to substantially 3.5 fins per inch (2.54 cm) along the longitudinal axis of the tubes, extend substantially 23.8% to substantially 36% of the nominal tube outside diameter in height from the tubes outer surface and have a thickness of substantially 0.007 inch (0.018 cm) to substantially 0.020 inch (0.051 cm). The tubes have a center-to-center spacing generally horizontally and normal to the longitudinal axis of the tubes of substantially 109% to substantially 125% of the nominal tube outside diameter, and a generally vertical center-to-center spacing of substantially 100% to about 131% of the nominal tube outside diameter. | 01-19-2012 |