1016results about How to "Speed up heat exchange" patented technology

Methods and apparatuses for thermally treating flowable materials using electromagnetic radiation, and foods and materials obtained thereby. Also provided are methods of continuous flow thermal treatment of biomaterials, apparatuses for performing the same, and products prepared using the methods and/or apparatuses.

A washing system for high temperature cleaning applications, such as carpet-cleaning, is disclosed that provides a consistent cleaning fluid temperature. The washing system utilizes multiple heat exchangers and multiple heat paths. The heating and power source is provided by a medium duty, diesel cycle engine. Multi-stage heating involves heat transfer from the engine's coolant to the cleaning fluid and heat transfer from the exhaust of the engine to the cleaning fluid via an intermediate medium. The system also includes a fluid clutch used to engage a power takeoff from the engine to operate the pump and blower of the washing plant. A failsafe source cutoff diverts the exhaust flow from thermal contact with an intermediate heat transfer oil.

A method for reducing the formation of deposits on the inner walls of a tubular heat exchanger through which a petroleum-based liquid is flowing comprises applying one of fluid pressure pulsations to the liquid flowing through the tubes of the exchanger and vibration to the heat exchanger to effect a reduction of the viscous boundary layer adjacent the inner walls of the tubular heat exchange surfaces. Reduction of the viscous boundary layer at the tube walls not only reduces the incidence of fouling with its consequential beneficial effect on equipment life but it also has the desirable effect of promoting heat transfer from the tube wall to the liquid in the tubes. Fouling and corrosion are further reduced by the use of a coating on the inner wall surfaces of the exchanger tubes.

The pod of wind-powered generator is constituted by a rigid fairing in which at least one electricity generator for coupling to at least one wind-driven propeller is disposed. The rigid fairing of the pod is formed by the body of the generator in which there are mounted a stator and a rotor, thereby simplifying the structure of the pod.

A cooling device has a large number of closely spaced impinging jets, adjacent an impingement gap, with parallel return paths for supplying coolant flow for the impinging jets with the least possible pressure drop using an interdigitated, branched hierarchical manifold. Surface enhancement features spanning the impingement gap form U-shaped microchannels between single impinging jets and single outlets.

In a heat-pump water heater with a super-critical refrigerant cycle, a valve open degree of a decompression valve is controlled to control a pressure of high-pressure side refrigerant so that a temperature difference between refrigerant flowing out from the water-refrigerant heat exchanger and water flowing into a water-refrigerant heat exchanger is set in a predetermined temperature range. Thus, the pressure of high-pressure side refrigerant in the super-critical refrigerant cycle can be controlled, thereby suitably adjusting heat-exchange performance of an internal heat exchanger, and restricting the temperature of refrigerant discharged from the refrigerant compressor from being uselessly increased.

A heat exchanger arrangement comprising a charge cooler and a housing. The charge cooler comprises a charge cooler core, a header plate, a coolant entry duct and a coolant exit duct. Specifically, the charge cooler core comprises hallow heat-transfer elements through which a coolant can flow. The housing is in the form of a chamber with a single aperture for receiving the cooler core and comprises an air entry duct, an air exit duct and a flange. The cooler core is fixed inside the housing by fixing the header plate of the charge cooler to the flange of the housing. Additionally, the header plate of the charge cooler closes the single aperture for receiving the cooler core.

A fluid heat exchanger has a housing having a thermally conductive base, a plurality of fin members connected to the base in a parallel, spaced relationship, a heat exchanger fluid inlet on one side of the plurality of fin members, and a heat exchanger fluid outlet on the opposite side of the plurality of fin members. The plurality of fin members each have a plurality of passageways and are arranged in the housing so that the passageways of one fin member are offset from the passageways of adjacent fin members.

Method and apparatus for making snow by generating water spray from a triple array of multiple nozzle sub-boom branch-pipes transversely protruding from the upper end of a main boom of a pivotably adjustable snow making pipe tower. Three air jet streams, one for each branch pipe, are simultaneously discharged under high pressure into and sequentially through the throats of each associated multiple stack of water sprays issuing from each set of branch pipe nozzles to thereby form multiple spray plumes of atomized and seeded water all directed forwardly from the upper end of the tower pipe. The water pipe may be an elliptical aluminum extrusion with two interior air tubes respectively controllably feeding large and small diameter air jet arrays to thereby provide a range of air jet water spray interaction. The pipe tower may be pivotally raised and lowered by a block-and-tackle or chain fall type drive mechanism that may be recoupled to the tops of a lifting pole and tower pipe for bodily raising the entire tower pipe and its support pipe telescopically on a ground support pole. Spreader-supported guy wires may be used to brace the tower pipe and also provide an electrical deicing circuit. Air jet control, blow-out valving and water drain conduit arrangements are disclosed, and also universally adjustable ground support systems for the pipe tower, including an underground-fed combined telescopic hydraulic ram forming air and water conduits.

Disclosed are a heat exchanger for a dehumidifier using a liquid desiccant and a dehumidifier using a liquid desiccant having the same. The heat exchanger for a dehumidifier using a liquid desiccant, comprises: a plurality of plate-type heat exchanger bodies to which a heat transfer medium flows through flow paths formed therein; and a plurality of plates extending between the respective heat exchanger bodies, and inclined with respect to the surfaces of the heat exchanger bodies.

The invention relates to a machine for preparing a cooled food product, comprising: a receiving seat (1), for accommodating an essentially cup-shaped container, comprising a heat exchange element (1a) having a heat exchange contact surface (21) arranged to be in contact with an outer surface of a side wall (8d) of the container when the container is placed in the machine, and a stirring unit (5) connectable to a stirring member (9) and arranged for driving the stirring member (9) according to a combination of movements, wherein at least one of the combination of movements has a component directed towards the interior of the container when placed in the receiving seat (1). The method further relates to a system comprising the machine and a container and a method of preparation.

A heat dissipation system includes a housing, a circulator and a cooler. The housing has at least one surface made of heat-conductive metal to contact with a heat source. The housing includes a recess with a passage formed on the bottom to contain cooling liquid and an inlet and an outlet connected to the recess. Two pipes are provided to connected between the inlet and the outlet and the cooler, respectively. The circulator is installed in the recess to circulate the flowing of the cooling liquid. As such, heat generated from the heat source is directly conducted to the housing and takes away by the cooling liquid circulated by the circulator to the cooler.

In a heat pump type hot water supply apparatus having a compressor (16), an outdoor heat exchanger (22), an expansion valve (24) and at least one indoor heat exchangers, and a water heat exchanger (18) for heat-exchanging refrigerant and water to achieve hot water, the water heat exchanger (18) is equipped in the refrigerant circuit so as to be connected to the outdoor heat exchanger (22) in series in the refrigerant circuit.

In an air conditioning apparatus for a vehicle, a double layer flow mode is set when the maximum heating state is set during an air outlet mode where both a foot opening portion and a defroster opening portion are opened. During the double layer flow mode, an air passage of an air conditioning case is partitioned into a first air passage through which inside air flows and a second air passage through which outside air flows, in such a manner that the first air passage communicates with the foot opening portion and the second air passage communicates with the defroster opening portion. When the double layer flow mode is set, the maximum rotation speed of a blower for blowing air is reduced by a predetermined level as compared with an entire outside air mode or an entire inside air mode. Thus, heating capacity for a passenger compartment of the vehicle can be improved.

The invention refers to a plate heat exchanger where the heat exchanger comprises a first flow channel between a first plate and a second plate, and where the flow channel comprises a first distribution passage, a heat transfer passage and a second distribution passage, where the heat transfer passage is vertically divided in a lower and an upper heat transfer passage and where the lower heat transfer passage is horizontally divided in a plurality of adjacent heat transfer zones, where the intermediate angle between the ridges and grooves in any of the heat transfer zones of the lower heat transfer passage is at least 30° larger than the intermediate angle of the upper heat transfer passage. The advantage of the invention is that an improved heat exchanger is provided, having an increased thermal performance and an improved evaporation capacity.

An air-cargo container is equipped with a modular refrigerating unit, which is attachable into the container shell in substantially one piece. Preferably, a control unit for the modular refrigerating unit is also provided as one single module. The refrigerating unit comprises the entire enclosure of an airflow path around an icebox, and is preferably mounted at a small distance from the wall and ceiling of the container. Simple positioning elements facilitate the actual positioning and mounting procedure. The refrigerating unit preferably comprises sealing flanges which during mounting by the positioning elements automatically are fitted into elements at the container wall. A manufacturing method is also disclosed, which comprises mounting of modular units into a shell of an air-cargo container. The mounting is preferably performed by using positioning elements, which guides the modular units into the proper positions.

A high efficiency combined cycle internal combustion and steam engine includes a cylinder having a piston mounted for reciprocation therein with an internal combustion chamber outward of the piston, a fixed cylinder cap sealingly and slideably mounted within the piston and a steam expansion/recompression chamber inside the piston adjacent the cylinder cap. The cylinder cap can be unheated or heated externally to reduce condensation of steam entering the steam chamber from a steam generator fired by waste combustion heat. Steam remaining in the cylinder when a steam exhaust valve closes at the top center position is recompressed during an inward stroke of the piston up to admission pressure prior to admitting the next charge of steam. One valve or a pair of retractable steam inlet valves connected in series within the cylinder cap act in cooperation with steam recompression and clearance volume to achieve an effective zero steam chamber clearance and a gain in mean Rankine cycle temperature to maximize efficiency. The amount of steam admitted each outward stroke is continuously regulated, e.g. by shifting the phase of one steam admission valve of a pair to vary their overlap for determining the steam mass admitted during each cycle to reduce specific fuel consumption. Other valves balance steam displacement with the steam generator output to use steam more efficiently. Engine coolant can be evaporated in a combustion chamber cooling jacket to form steam which is then superheated in a combustion exhaust manifold.

The present invention relates to a pneumatic tire 1 in which turbulent-flow generating projections 10 each extending from an inner circumference side to an outer circumference side are provided on a outer circumferential face 3a which is tire surface of tire side portion 3 at intervals in a tire circumferential direction. Each of the turbulent-flow generating projections 10 includes an edge portion 10g when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof, and a front wall angle θ formed between a front wall face 10a of each turbulent-flow generating projection 10 and the tire surface (outer circumferential face 3a) is set in the range of 70° to 110°, the front wall face being hit by an airflow.

An evaporation cycle heat exchange system for a vehicle is provided. The evaporation cycle heat exchange system is a new type of cooling system that cools vehicle electronic components, a fuel cell stack, an internal combustion engine, an automatic transmission, a turbocharger, etc. using an evaporative heat exchanger, thus improving cooling efficiency and reducing the size of components such as a radiator. The evaporation cycle heat exchange system cools coolant circulating through a vehicle cooling system by employing an evaporative heat exchanger in which a working fluid flows by a pressure difference caused by volume expansion and capillary phenomenon. Accordingly, it is possible to improve the cooling efficiency of the entire cooling system, reduce the size of components to comply with pedestrian protection regulations, improve fuel efficiency, and ensure the stability of the system. Moreover, the present invention provides an evaporation cycle heat exchange system for a vehicle, in which a product-integrated or line-integrated evaporative heat exchanger capable of being mounted in various vehicle components such as an inverter, a fuel cell stack, an oil fan of an internal combustion engine, a turbocharger, an automatic transmission oil fan, etc. is employed. Accordingly, it is possible to easily apply the evaporative heat exchanger to various vehicle components and various vehicle models, and thus it is possible to increase the degree of freedom of the design of the cooling system.

An SOFC stack module including an integral individual stack manifold containing all of the gas pathways necessary for supply and exhaust of fuel gas and cathode air to and from the stack chimneys. The stack is mounted and hermetically joined directly to the manifold without an intermediate base plate. Flanges at the inlet and outlet ports couple to system distributary manifolds via high temperature sealing joints. The manifold preferably is fabricated of a ferritic stainless steel, and may be formed in a one-piece casting, a combination of multiple castings and stamped plates metallurgically joined (brazed or welded together), or stamped from sheet metal stock. Preferably, the manifold includes fin structures extending into adjacent fuel gas and cathode air chambers to enhance balancing of temperatures by heat exchange therebetween. Heat exchange may be further improved by configuring the manifold to have a plurality of interleaved anode and cathode gas supply chambers.