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Grabon
Michel Grabon, Bressolles FR
| Patent application number | Description | Published |
|---|---|---|
| 20080202727 | Evaporator Protection - A heat exchange device and a method of compensating for increases in pressure in tubes within the heat exchange device is provided. The heat exchange devices includes a plurality of the tubes for carrying a first medium and a compressible feature insertable into at least one of the tubes. Expansion of the medium causes said compressible feature to compress. The compressible feature can be inert resilient material. | 08-28-2008 |
| 20090114380 | SPIRAL FLAT-TUBE HEAT EXCHANGER - A spiral flat tube heat exchanger comprising a first flat tube and a second flat tube thermally coupled to the first flat tube, the first flat tube and the second flat tube forming substantially concentric spirals. A first fluid flows through the first flat tube in a first flow direction, and second fluid flows through the second flat tube in a second flow direction. The flat tubes preferably contain microchannels to increase heat transfer efficiency. | 05-07-2009 |
| 20100223937 | Heat Exchanger Coupling Blocking Plug - A blocking plug fitting that does not require brazing is described that fits in matching correspondence with an existing fitting arrangement used to couple refrigerant tubing to a heat exchanger. The blocking plug fitting allows a refrigerant system to be returned to service quickly if a heat exchanger is removed for repair. | 09-09-2010 |
Michel K. Grabon, Bressolles FR
| Patent application number | Description | Published |
|---|---|---|
| 20090120110 | Refrigeration System and Method with Controllable Heat Recovery - A method for providing controllable amounts of heat recovery from a refrigerant circuit includes the steps of providing a cooling circuit comprising a compressor, a condenser, an expansion device and an evaporator connected in series by refrigerant flow lines; providing a heat recovery circuit comprising a heat recovery heat exchanger, the heat recovery circuit being connected to the cooling circuit so that the heat recovery heat exchanger is in parallel with the condenser, and the heat recovery heat exchanger being in heat exchange relationship with a fluid to be heated based upon an end-user demand for heat; and selectively flowing refrigerant through the condenser of the cooling circuit and the heat recovery heat exchanger of the heat recovery circuit so as to maintain temperature of the fluid within a temperature hand around a set point provided by the end user. | 05-14-2009 |
Michel Karol Grabon, Bressolles FR
| Patent application number | Description | Published |
|---|---|---|
| 20100094434 | OPTIMIZATION OF AIR COOLED CHILLER SYSTEM OPERATION - A method is provided for operating a refrigerant vapor compression system, for example an air-cooled chiller or air-cooled condensing unit, at optimal energy efficiency rating. The method includes the steps of: determining the instantaneous values of a plurality of selected operating parameters of the system's refrigeration unit, calculating a desired control parameter set point indicative of an optimal energy efficiency rating for the refrigeration unit as a function of the selected operating parameters, sensing the instantaneous value of the control parameter, comparing the sensed instantaneous value of the control parameter to the calculated control parameter set point, and adjusting the operating speed of the condenser fans associated with the air-cooled condenser of the refrigeration unit in response to that comparison. | 04-15-2010 |
Miehal Grabon, Bressolles FR
| Patent application number | Description | Published |
|---|---|---|
| 20080202151 | Method and Apparatus for Reducing the Noise Level Outputted by Oil Separator - A muffling apparatus ( | 08-28-2008 |
Robert J. Grabon, Cedar Rapids, IA US
| Patent application number | Description | Published |
|---|---|---|
| 20080212724 | Wireless communications system having reduced noise mode operation capability - A wireless communication system having a terminal unit operates in a reduced noise state during receipt of a wireless transmission from a control unit. The terminal unit includes terminal circuitry, a radio and noise management circuitry. The noise management circuitry partially or fully disables operation of the terminal circuitry during a receipt by the radio. Noise management circuitry may disable a terminal processor, disable interrupts, buffer interrupts and otherwise modify operation of the terminal circuitry to reduce generated radio noise that would otherwise interfere with receipt of data by the radio. The wireless communication system includes noise management circuitry located in a control unit that operates in conjunction with noise management circuitry in a first terminal unit and a second terminal unit to schedule transmissions from the control unit. These scheduled transmissions allow the terminal units to perform required processing functions outside of the reduced noise period. | 09-04-2008 |