3193results about How to "Prevent freezing" patented technology

Various techniques are disclosed for improving airtight two-phase heat-transfer systems employing a fluid to transfer heat from a heat source to a heat sink while circulating around a fluid circuit, the maximum temperature of the heat sink not exceeding the maximum temperature of the heat source. The properties of those improved systems include (a) maintaining, while the systems are inactive, their internal pressure at a pressure above the saturated-vapor pressure of their heat-transfer fluid; and (b) cooling their internal evaporator surfaces with liquid jets. FIG. 43 illustrates the particular case where a heat-transfer system of the invention is used to cool a piston engine (500) by rejecting, with a condenser (508), heat to the ambient air; and where the system includes a heat-transfer fluid pump (10) and means (401-407) for achieving the former property.

An ablative apparatus and associated methods that can be used to treat atrial fibrillation and other cardiac arryhythmias by ablating cardiac tissue is disclosed. When the distal end of the apparatus reaches the tissue to be ablated, an ablation probe driven by a transducer is vibrated. Scratching the tissue with abrasive members, the vibrating ablation probe is capable of mechanically ablating tissues. This mechanical ablation may be utilized to penetrate epicardial fat, thereby exposing the underlying myocardium. The ablative apparatus may then be used subject the exposed myocardium to mechanical ablation, cryoablation, ultrasonic ablation, and/or any combination thereof.

The invention is directed to an article with a liquid-impregnated surface, the surface having a matrix of features thereupon, spaced sufficiently close to stably contain a liquid therebetween or therewithin, and preferable also a thin film thereupon. The surface provides the article with advantageous non-wetting properties. Compared to previous non-wetting surfaces, which include a gas (e.g., air) entrained within surface textures, these liquid-impregnated surfaces are resistant to impalement and frost formation, and are therefore more robust.

Reusable and recyclable target temperature storage and shipping containers designed to maintain the content therein within desired temperature levels for greatly extended periods of time are disclosed. A First species is customized to maintain refrigeration temperatures for extended periods of time and the Second species maintains freezing temperatures for extended periods of time. Both species models include containers having outer protective layers and inner insulating layers as well as a cavity for holding payload being stored or shipped, and one or more areas for holding passive coolants in a predetermined relationship to the products within specific target temperatures. The different species provide cold or freezing temperatures in reusable or disposable models for various applications. The main containers are substantially airtight when sealed for storage or shipping and includes an outer box, inner insulation, internal dividers, and different temperature controlling coolants designed for various temperature maintenance requirements of temperature-sensitive content.

An improved camera for the acquisition of panoramic images is disclosed. The camera comprises a convex photochromic reflector directed towards an image capture element. Multiple incoming light sensors around the perimeter of the camera detect strong incoming light and cause the activation of a corresponding UV light. The UV light in turn activates the photochromic effect on a particular region of the photochromic reflector that corresponds to an area of strong incident light. The photochromic reflector then darkens in that area, providing compensation for a scene that has a wide range of lighting conditions. Therefore, the camera compensates for strong lighting indoors as well as outdoors.

A composite structure includes a matrix material and a carbon nanotube (CNT)-infused fiber material that includes a plurality of carbon nanotubes (CNTs) infused to a fiber material. The CNT-infused fiber material is disposed throughout a portion of the matrix material. The composite structure is adapted for application of a current through the CNT-infused fiber material to provide heating of the composite structure. A heating element includes a CNT-infused fiber material includes a plurality of CNTs infused to a fiber material. The CNT-infused fiber material is of sufficient proportions to provide heating to a structure in need thereof.

This invention relates to a dispenser, for preferably Frozen Carbonate Beverage (FCB) product, having valves that can be manually or electrically operated in response to electronic controls. The valve has a jam dispensing position, and can be used with an additive, such as flavors, injector. A power failure back up is provided to close the valve, along with sanitation and optional purging cycles. Product dispense is provided only when sensed to have a desired consistency and/or in a condition to prevent splashing. Additive dispense is provided only when product is present. The dispenser can have a monitor and suitable controller to dispense strips or layers of different additives or flavors into the product.

The invention discloses a self-made heat conductor and heating equipment into which an insulating heat conduction material is embedded and an implementation method of the self-made heat conductor andthe heating equipment. The self-made heat conductor is of a coaxial cable structure, and comprises an outer conductor, the insulating heat conduction material and an inner conductor. The insulating heat conduction material is good in heat conduction and has an insulating capability. The insulating heat conduction material surrounds the outer side of the inner conductor to completely surround the periphery of the inner conductor, so that the inner conductor and the outer conductor are completely isolated from each other. The heating equipment has the two types of sending-end heating equipment and receiving-end heating equipment. The sending-end heating equipment applies alternating current or direct current between the outer conductor and the inner conductor of the self-made heat conductorthrough an output power supply of an anti-icing and de-icing power transmission device to achieve the anti-icing and de-icing purpose, and the receiving-end heating equipment is connected with a loadthrough a receiving-end steel core to achieve the anti-icing and de-icing work. By means of the self-made heat conductor and heating equipment into which the insulating heat conduction material is embedded and the implementation method of the self-made heat conductor and the heating equipment, heating of steel core resistors of the self-made heat conductor and the heating equipment themselves is effectively utilized, the cost is low, and the effect is good. Under the control of a control center, the anti-icing and de-icing work is implemented and can be implemented online when a high voltage transmission line works, and the safety of electric equipment is guaranteed.

Systems and methods for monitoring and controlling fluid consumption in a fluid-supply system are disclosed using one or more sensors for generating signals indicative of the operation thereof. In one embodiment, a method of controlling gas flow in a conduit of a natural gas supply system comprises sensing a gas flow parameter related to the natural gas supply system; and if the sensed parameter satisfies a predetermined condition, sending, to at least one fluid control device interfaced with a conduit of the natural gas supply system, at least one control signal to impede a flow of gas through the conduit.

The concept of the present invention describes configurations to provide uniform heat distribution of resistive heaters. This configuration allows successful anti-icing and deicing with relatively low applied power. One aspect involves the use of a thin film heater applied just underneath the topcoat to efficiently direct all heat to the surface, allowing anti-icing and de-icing with minimal power. This can be accomplished by employing a hybrid electrode interface, using a metal foil or metal braid that is attached to the aircraft surface with a structural adhesive that has been smoothed along the edges with metal-filled adhesive. Another aspect of the present invention uses an array of heater cells created as a single sheet and a heat spreading material, provided underneath or overtop of the heater cells.

A fuel cell system with fuel processor for integration with a marine vessel propulsion system. The system includes an auto thermal reactor that is the fuel processor for producing hydrogen from a fuel source. The fuel source is preferably ethanol or biodiesel or a mixture thereof, but can also be a sulfur containing fuel like petrodiesel of JP-8. The system further includes a gas-water shift reactor for further production and concentration of the hydrogen from the auto thermal reactor output. The system also includes a hydrogen permeable membrane separator for generating suitable quantities of essentially pure hydrogen to the fuel cell. The system also includes an oxygen permeable membrane separator for concentrating oxygen and reducing nitrogen to improve the partial pressure of hydrogen in subsequent fuel processing steps. The system contemplates the use of a Polymer Electrolyte Membrane (PEM) fuel cell. The system minimizes preheating of catalysts or other components to the extent just needed to initiate the fuel processor. To that end, heat sources and sinks of the system and associated usage systems are matched so as to minimize heat collection, storage and distribution systems. Water is recycled within the system to the extent necessary to maintain a water balance in the fuel processor and the fuel cell stack(s). The system includes cooling of the fuel cell stack(s) and integrated heat recovery with exothermic and endothermic catalysts. The fuel processor/fuel cell system components are configured to conform to and take advantage of the available space and limitations, such as the space constraints and opportunities associated with a marine vessel.

An electronic pool pump timer that controls the run time of the pump for a period of time each day depending on the date. In the preferred embodiment, the user enters the historical daily maximum and minimum pump run times for the specific pool and the system calculates the required time the pump will run on a given day. The customized run time is thus calculated as a function of the date and the minimum and maximum run times for a given pool. The system then self-adjusts the run time each day as necessary. The device comprises a data input means, a display, memory, and a controller. It may also include a manual override to allow the user to turn the pump on at any time. The device is connected to the pump motor. The device is connected to a power supply and may also include a battery back-up in the event of a power outage. To prevent the pool from freezing, the system may also include an air temperature sensor that triggers pump operation when the ambient air is below a given temperature.

Liquid and/or solid anti-icing fillers and/or oils are combined with erosion resistant silicone and/or fluorocarbon elastomeric materials to create erosion resistant anti-icing coatings. These coatings may be utilized to prevent ice build-up on various gas turbine engine components, aircraft components, watercrafts (i.e., boats and ships), power lines, telecommunication lines, etc.

The invention discloses an air-cooled heat pump air conditioner which comprises a compressor, an outdoor coil, a heat exchanger, a main liquid line and supercooling devices, wherein the supercooling devices comprise two or three of a supercooling coil, an economizer and a liquid-vapor separator with a supercooling function, the supercooling devices are arranged on the main liquid line, and liquid state refrigerants which circulate in the main liquid line can achieve repeatedly the supercooling through the supercooling devices. According to the air-cooled heat pump air conditioner, the performance of cooling/heating circulation of the air-cooled heat pump air conditioner is effectively improved, so that the air-cooled heat pump air conditioner is stable and reliable in operation and energy saving in a low-temperature environment.