1117results about How to "Guaranteed heat exchange effect" patented technology

A heat exchanger assembly includes a first single-piece manifold and a second single-piece manifold spaced from and parallel to the first single-piece manifold. Each of the first and second single-piece manifolds has a tubular wall defining a flow path. A plurality of flow tubes extend in parallel between the first and second single-piece manifolds and are in fluid communication with the flow paths. An insert having a distribution surface is slidably disposed in the flow path of the first single-piece manifold to establish a distribution chamber within the first single-piece manifold. A series of orifices defined in the distribution surface of the insert are in fluid communication with the flow path and the distribution chamber for uniformly distributing a heat exchange fluid between the flow path and the flow tubes.

In a magnetic heat pump system, in which heat transport medium is heated or cooled by magnetocaloric effect material accommodated in a magnetic heat pump device. A material having a coefficient of thermal conductivity, which is higher than that of the heat transport medium, or a material having a specific heat or a volume specific heat, which is higher than that of the heat transport medium, is mixed in the heat transport medium. A coefficient of thermal conductivity of the heat transport medium is thereby increased so as to increase heating and/or cooling performance of the magnetic heat pump system.

Embodiments in accordance with the present invention relate to heat exchangers, and more specifically to graphitic foam (GF) heat exchanger assemblies developed for a plurality of thermal management applications including the management of heat from electronic components, primary engine cooling and energy recovery. According to certain embodiments, these assemblies are designed using a pressure normal to the GF exchange element to ensure thermal contact without the use of bonding materials or methods. The bondless assembly is designed to be resistant to high thermal stresses and large thermal expansion coefficient differences thereby achieving and maintaining the highest possible thermal performance.

End rings are coupled with upper and lower ends of a cylindrical body tube. A plurality of first heat exchanger tubes are fitted and held in holes provided in a pair of first tube plates. A plurality of second heat exchanger tubes are fitted and held in holes provided in a pair of second tube plates. The inside of each first heat exchanger tubes forms a first-fluid passage for carrying a reformed gas. The space defined between an outer wall of each first heat exchanger tube and an inner wall of the corresponding second heat exchanger tube forms a second-fluid passage for carrying a coolant. The space defined among an inner wall of the body tube and outer walls of the second heat exchanger tubes form a third-fluid passage for carrying compressed air.

An electronic apparatus comprises a housing containing a heat-generating component, and a cooling unit. The cooling unit includes a heat sink thermally connected to the heat-generating component, a first air passage for guiding air outside the housing to the heat sink and guiding air heated by heat exchange with the heat sink to the outside of the housing, and a second air passage for guiding air within the housing to the outside of the housing.

Bioreactor with a vessel having at least one gas dissipation duct for gas discharge, the orifice of the gas dissipation duct being connected to a hydrophobic sterile filter and to a condenser arranged between them and having condensation surfaces, a turbulence generator for generating a turbulent flow is arranged in the gas dissipation duct in the region of the condenser.

The present invention provides an apparatus for heating or cooling a polishing surface. This apparatus includes a heat exchanger arranged so as to face the polishing surface when the workpiece is polished. The heat exchanger includes a medium passage through which a heat-exchanging medium flows, and a bottom surface facing the polishing surface. At least a part of the bottom surface is inclined with an upward gradient above the polishing surface such that a polishing liquid on the polishing surface generates a lift exerted on the bottom surface during movement of the polishing surface.

The invention discloses an efficient and compact pre-cooling heat exchanger for a pre-cooling gas sucking type engine. The efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine comprises a pre-cooling heat exchanger body in the shape of a similar cylinder; the cross section of the similar cylinder is in the shape of a ring different in diameter; the longitudinal section of the similar cylinder is formed by two symmetrically arranged arc segments; the center angle of each arc segment is 45 degrees; the pre-cooling heat exchanger body comprises a cold flow outlet pipe, a cold flow inlet pipe and a plurality of heat exchanging pipes; each heat exchanging pipe is in the shape of an arc; the arc-shaped center angle of each heat exchanging pipe is 45 degrees; and the heat exchanging pipes are distributed into the similar cylinder in a crossed manner. The efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine can have the engineer realizability on the premise that the heat exchanging effect is guaranteed, so that air incoming flow in front of a gas compressor can be pre-cooled, the high temperature over-running problem of gas compressor blades is solved, the engine thrust is increased, the flight envelop is extended, the welding difficulty is effectively reduced, the frosting blockage problem is effectively solved, the engineer realizability is achieved under the current technology, and after the efficient and compact pre-cooling heat exchanger for the pre-cooling gas sucking type engine is applied to the pre-cooling gas sucking type engine, the engine performance can be substantially improved.

A heat exchanger is constructed by laminating rectangular shaped partition walls and corrugated fins alternately. A first fluid passage through which a high temperature internal air and a second fluid passage through which the low temperature external air flows are formed into rectangular parallelopipe-shape the longitudinal direction of which is upper and lower direction. The corrugated fin is disposed inside the fluid passage to incline frontwardly. A first fluid inlet is provided at an upper position and a first fluid outlet is provided at a lower position of the first fluid passage. While, a second fluid inlet is provided at a lower position and a second fluid outlet is provided at an upper position of the second fluid passage. That is, the first fluid and the second fluid flow in an opposite direction to each other. Therefore, because the fluid introduction area of the corrugated fin is large in comparison with that in a conventional counter-flow type heat exchanger, the pressure loss of the fluid is suppressed, and the corrugated fin does not tend to be choked with a dust or the like.

A heat exchanger comprising a heat exchange core 4 composed of tube groups 11 in the form of rows arranged in the direction of flow of air through the exchanger, each of the tube groups 11 comprising a plurality of heat exchange tubes 9 arranged at a spacing, a refrigerant inlet header 5 and a refrigerant outlet header 6 positioned at the upper end of the core 4 and having respective groups of heat exchange tubes joined thereto, and a refrigerant turn tank 3 disposed at the lower end of the core 4. The turn tank 3 has its interior divided by a partition wall 39 into a refrigerant inflow header 7 and a refrigerant outflow header 8. The heat exchange tubes 9 have lower end portions inserted in the headers 7, 8 and are joined to the headers 7, 8. Refrigerant passing holes 43 are formed in the partition wall 39. The heat exchange tubes 9 have their lower ends positioned below the lower ends of the holes 43. The heat exchanger is improved in heat exchange performance.

A heat exchanger assembled from multiple heat exchanging tubes. Each of the multiple heat exchanging tubes is formed as a flattened tube of 0.5 mm in thickness by press work or bending work of a stainless steel plate member having a thickness of 0.1 mm. Each of the multiple heat exchanging tubes is structured to have multiple lines of sequential wave crests and multiple lines of sequential wave troughs formed on each of flattened faces of the heat exchanging tube. The multiple lines of the sequential wave crests and the multiple lines of the sequential wave troughs are arranged to have a preset angle γ relative to a main stream of an air flow. The lines of the sequential wave crests and the lines of the sequential wave troughs are symmetrically folded back about folding lines arranged at a preset interval W along the main stream of the air flow.

The invention discloses a device for inhibiting frost formation of an evaporimeter by supersonic vibration. The device comprises the evaporimeter which comprises liquid tubes; the liquid tubes are connected with fins; the liquid tubes are connected with a vibration transfer plate; and the vibration transfer plate comprises a vibration bearing surface which is fixedly connected with a power ultrasonic transducer. The vibration of the power ultrasonic transducer is transferred to the fins through the vibration transfer plate and the liquid tubes, so that the supersonic vibration can be dispersed to the whole evaporimeter. Power ultrasonic waves are all distributed on the whole evaporimeter, early crystal growth can be disturbed by using mechanical vibration effect of power ultrasonic waves,and depending on the high accelerated speed and low amplitude action force, and the frost crystal is broken and falls off on the fins on which the frost crystal grows; therefore, the frost blockage between the fins is avoided. The device has a simple structure, is low in energy consumption, has a good frost formation effect and a good frost removal effect, and can inhibit and reduce the frost formation of the evaporimeter, achieve the effect of descaling the surface of the evaporimeter, and guarantee the normal heat exchange of the evaporimeter.

The invention discloses a refrigerating and defrosting method for a movable air conditioner and further discloses the movable air conditioner and a storage medium. The refrigerating and defrosting method for the movable air conditioner comprises the steps that when the movable air conditioner is in a refrigerating mode, the temperature of an indoor heat exchanger is detected; whether the temperature of the indoor heat exchanger is lower than the preset frosting temperature or not is judged; and when the temperature of the indoor heat exchanger is lower than the frosting temperature, operatingparameters of the movable air conditioner are adjusted to increase the temperature of the indoor heat exchanger. According to the technical scheme, by detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the preset frosting temperature or not, whether the frosting risk exists in the indoor heat exchanger or not is determined, when the frosting risk exists in the indoor heat exchanger, the operating parameters of the movable air conditioner are adjusted to improve the frosting situation of the indoor heat exchanger, thus the frosting situation of the indoor heat exchanger can be improved without operating stopping of a compressor, and the user experience is improved while the heat exchanging effect and system operating reliability are ensured.

This disclosure provides a new high-efficiency air conditioning system for cooling a motor vehicle control cabin. Various components of the system have been optimized (including the motor, the drive train and the condenser) in a way that minimizes battery draw-down, and allows long-term operation on battery power alone. The main engine of the vehicle can be shut down during loading or when the driver is resting overnight, and does not need to be restarted for 8 hours or more. The air conditioning system of this invention enhances the driver's comfort and alertness after resting, decreases vehicle weight, and substantially reduces air pollution and noise. The invention has the added benefits of reducing fuel consumption and wear and tear on the truck's engine, thereby sustaining considerable cost benefit for the fleet operator.

To improve a heat exchange efficiency of a heat sink without enlarging the heat sink. The heat sink of the invention comprises a heat receiving base receiving heat from an exothermic element, a plurality of fins radiating heat arranged radially around the heat receiving base at predetermined intervals, and one or more heat pipe(s) comprising a curved portion. One of end portions of the curved portion is individually connected to a predetermined portion of the heat receiving base, and a predetermined region of the curved portion is contacted with the fins in a heat transferable manner.