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2102results about "Combustion process" patented technology

In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate

A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H.sub.2, and / or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A heating rate to a selected volume of the formation may be controlled by altering an amount of heating energy per day that is provided to the selected volume.

Heat and energy recovery ventilators and methods of use

An energy recovery ventilator and method for monitoring and maintaining an environmental condition inside a structure such as a house, building, or dwelling is provided. The ventilator may include a housing having mating halves of a molded polymeric material, first and second chambers disposed within the housing to convey separate first and second streams of air, a heat exchanger configured to intersect the first and second chambers, a first fan to circulate the first air stream through the first chamber, a second fan to circulate the second air stream through the second chamber, and a fan motor driving the first and second fans. The ventilator may also be configured to prevent frost build-up in or on the energy ventilator, to provide efficient cooling, and maintain one or more desired environmental conditions.

Flat plate heat and moisture exchanger

This invention relates in general to air exchange systems and, in particular, to an improved energy recovery ventilator, a cross flow plate core associated therewith and a method of conditioning air for a building. In one aspect, the invention provides a cross flow plate core comprising: a left hand wafer comprising a left hand spacer with a first of a plurality of membranes bonded thereto, the left hand spacer comprising a plurality of parallel curvilinear rails which form channels for receiving a first stream of air; and a right hand wafer comprising a right hand spacer with a second of the plurality of membranes bonded thereto, the right hand spacer comprising a plurality of parallel curvilinear rails which form channels for receiving a second stream of air, wherein the left hand spacer of the left hand wafer is bonded to the top of the membrane of the right hand wafer.

Mitigation of in-tube fouling in heat exchangers using controlled mechanical vibration

Fouling of heat exchange surfaces is mitigated by a process in which a mechanical force is applied to a fixed heat exchanger to excite a vibration in the heat exchange surface and produce shear waves in the fluid adjacent the heat exchange surface. The mechanical force is applied by a dynamic actuator coupled to a controller to produce vibration at a controlled frequency and amplitude output that minimizes adverse effects to the heat exchange structure. The dynamic actuator may be coupled to the heat exchanger in place and operated while the heat exchanger is on line.

Solvent extraction and recovery

Systems and methods for improving dense gas solvent extraction of a solute and recovery of the solvent are provided. A pressure of the solvent / solute mixture obtained from an extraction chamber is increased, e.g. with a pump, thereby providing the mixture above saturation conditions. The increased pressure provides greater solubility of the solute and less solvent being vaporized in a heat exchanger. A buildup of solute in the system is reduced, thus improving system longevity. Also, process conditions of the separation process are isolated from those of the extraction process. Accordingly, the process conditions for the separating process are maintained while the process conditions of the extraction chamber vary with ambient temperature, thus saving cost and energy. This isolation also provides an ability to use, in the gas recovery cycle, a heat pump that can be used for many applications and environmental conditions while still using a conventional refrigerant.

System for deep cooling and waste heat recovery of smoke gas in boiler

The invention relates to a system for deep cooling and waste heat recovery of smoke gas in a boiler with an independent operating system, which comprises a smoke gas deep cooler, an air heater and an independent water circulation system comprising the smoke gas deep cooler and the air heater. The smoke gas of which the dust is removed by an electrostatic dust remover is used for heating the cold water in the smoke gas deep cooler to recover the waste heat of the exhausted smoke, and the hot water at the outlet of the smoke gas deep cooler is transferred to the air heater for preheating the air, thereby increasing the temperature of the combustion-supporting air in the boiler; after the smoke gas passes through the smoke gas deep cooler, the smoke gas is directly introduced into a desulfurizing tower for desulfurization and recovery processing; and finally, the smoke gas is exhausted through a wet chimney. The system of the invention does not need to change the traditional thermodynamic system of the machine unit, and the long-period safe operation of the system can not be influenced in the process of recovering the waste heat of the smoke gas, thereby lowering the temperature of the exhausted smoke, saving the desulfurization water consumption, improving the machine unit efficiency and increasing the machine unit output.

High-frequency, low-temperature regenerative heat exchanger

A high-frequency, low-temperature regenerator (12). The regenerator (12) includes a substrate (50) having rare earth material (52) disposed thereon. In a specific embodiment, the substrate (50) has channels or pores (54) therethrough or therein to facilitate gas flow through the regenerator (12). The substrate (50) is constructed from a material, such as polyimide, polyester, or stainless steel, which is sufficient to define the geometry of the regenerator (12). The rare earth material (52) is selected and deposited on the substrate (50) in a layer (52) having thermal penetration depth that is greater than the thickness of the layer (52). The thermal penetration depth is sufficiently high to enable all of the rare earth material (52) to contribute to thermal regeneration at an operating frequency of 30 Hz. In the illustrative embodiment, the thickness of the substrate (50) is less than or equal to approximately 0.001 inches. The layer of rare earth material (52) is approximately 0.0002 inches thick. The substrate (44, 50) includes a stack of plated substrates (44) that are stacked so that spaces (54) exist between the plated substrates (44), which result in a porosity of approximately 15 percent. Dimples, pleats, or other mechanisms in the plated substrates (44) preserve the spaces (54) between the plated substrates (44). In the specific embodiment, the spaces (54) are approximately 0.00025 inches wide, and the working gas is helium.

Waste heat recycling system of annealing furnace

The invention provides a waste heat recycling system of an annealing furnace. The waste heat recycling system comprises the annealing furnace, an air heat exchanger, a steam boiler, a hot water boiler, an exhaust fan, a combustion fan and a combustion air pipe. The annealing furnace comprises a heating section and a preheating section, the air heat exchanger is connected with the preheating section, the steam boiler is connected with the air heat exchanger, the hot water boiler is connected with the steam boiler, the exhaust fan is connected with the hot water boiler, the steam boiler is connected with a steam pipeline, the hot water boiler is connected with a hot water pipeline, the combustion fan is connected with the air heat exchanger, the combustion air pipe comprises a main pipe and a plurality of branch pipes communicated with the main pipe, one end of the main pipe is connected with the air heat exchanger, the branch pipes are connected with the heating section, and the main pipe is provided with an exhaust pipe and a pipe explosion prevention device. According to the waste heat recycling system of the annealing furnace, waste heat produced in the annealing process can be made full use of, and safety performance of the waste heat recycling system can be fully guaranteed.

Formed sheet heat exchanger

A formed sheet heat exchanger is provided for exchanging heat between fluids is provided. The apparatus includes flow divider sheets that are positioned in a stacked configuration and extend in a longitudinal direction so that adjacent pairs of the sheets define flow passages therebetween for receiving first and second fluids. Each of the sheets is nonuniform in the longitudinal direction, having a manifold portion and a corrugated portion. The corrugated portions of each adjacent pair of sheets define a plurality of fluid channels therebetween that are connected to the portion of the flow passage defined between the manifold portions. The fluid channels are configured to receive the first or second fluids and transfer thermal energy therebetween through the flow divider sheets.

Variable area mass or area and mass species transfer device and method

Disclosed herein is a-variable-area or mass or area and mass ratio species transfer device, one embodiment with a plurality of species transfer masses. At least one actuator is disposed in communication with the species transfer masses, capable of selectively moving one or more of the masses independently of other one or more of the masses into at least contact with a first fluid stream and into contact with a second fluid stream. Yet further disclosed herein is a method for controlling species transfer in a species transfer device. The method includes: selecting an appropriate mass / area ratio between a portion of a variable area or mass or area and mass ratio species transfer device exposed to a higher-temperature fluid and a portion of the species transfer device exposed to a lower-temperature fluid; exposing one selected portion of the species transfer device to the higher-temperature fluid; and exposing another selected portion of the species transfer device to the lower-temperature fluid.

Embossed regenerator matrix for heat exchanger

A regenerator matrix for effecting the transfer of heat between two counter-flowing air streams separated in part by face seals. The matrix includes strips of material wound about an axis so as to provide a plurality of layers. The matrix also includes embossments located on at least some of the layers and providing interlayer spaces between at least some of the layers, such that the interlayer spaces extend through the matrix substantially parallel to the axis. The embossments have a uniform height and include primary and secondary embossments. The primary embossments extend substantially parallel to the axis to divide the interlayer spaces into gas passageways and substantially resist circumferential gas leakage between the gas passageways. The primary embossments are also for aligning with the face seals to prevent circumferential gas leakage between the two counter-flowing air streams, and are successively spaced so that at most two successive primary embossments will align with the face seals. The secondary embossments maintain the interlayer spaces at a substantially uniform spacing between the primary embossments, yet allow circumferential gas flow within the gas passageways.

Thermal Decomposition of Urea in a Side Stream of Combustion Flue Gas Using a Regenerative Heat Exchanger

This invention relates generally to the treatment of NOx in combustion flue gas. In certain embodiments, the invention relates to the use of a regenerative heat exchanger (RHE) to convert urea to ammonia in a side stream of flue gas. Ammonia and / or other urea decomposition products exit the heat exchanger, are mixed with the rest of the flue gas, and enter a selective catalytic reduction (SCR) unit for reduction of NOx in the flue gas. The use of an RHE significantly improves the thermal efficiency of the overall process. More particularly, in certain embodiments, the regenerative heat exchanger is a dual chamber RHE.
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