Abstract:
Echangeur thermique, comportant un corps (3)délimitant un canal central (7) entouré de canaux périphériques (10) et ayant des extrémités pourvues d'organes de définition de circuits indépendants agencés de telle manière que le canal central permette la circulation d'un fluide caloporteur et les canaux périphériques permettent la circulation d'un fluide à traiter thermiquement.
Abstract:
A heat exchanger for an internal combustion engine's cooling system, said heat exchanger comprising a main and an auxiliary circuit and comprising two separated regions, one large region communicating by means of a first radiator tank with the main cooling circuit and the other, small region communicating by means of a second radiator tank with the auxiliary cooling circuit, characterized in that the radiator tanks may communicate with each other through a connection aperture receiving a controlled closing element and in that a drive acting on said closing element is used to selectively open or close the said connection aperture.
Abstract:
A boiler system including a first manifold, a second manifold provided at an elevation above the first manifold, and a heat exchanger conduit fluidly connecting the first and second manifolds. The conduit is provided within a first fluid flow, and the heat exchanger conduit receives a second fluid. A thermocouple is provided within the second manifold to measure a temperature of the second fluid within the second manifold. A control unit is provided to maintain a level of liquid phase of the second fluid such that liquid phase of the second fluid does not enter the second manifold based on the temperature measured by the thermocouple. The boiler system can be provided with first and second conduits, where the second conduit is provided within the first fluid flow downstream of the first conduit, and where the first and second conduits are inclined with respect to a vertical axis.
Abstract:
A system for heat exchange is provided in which process material (1) flows through a heat exchanger comprising multiple heat transfer stages and the heating and or cooling power applied to each stage can be modified independently. The system comprises a unitary heat exchanger comprising a heat transfer surface comprising a plurality of elements or zones over which a process material can flow wherein each element or zone has independent means (V1-V6) to set or control the level of heating or cooling within that zone.
Abstract:
A bed of particulate material 6 is supported by an air distribution bottom 5. Under the distribution bottom 5 exist one or more compartments 7, which each being supplied with cooling air from a fan installation 8. The distribution bottom 5 is sectionalised in a number of smaller areas 9. Each smaller distribution area 9 is connected to the compartment 7 by ducts 10, 11 and 12. The one duct 10 does have a fixed orifice area. The ducts 11 and 12 do have floaters 13A /13B end stop 14A/14B and bottom support 15A/15B. It is hereby obtained that the total pressure loss across the air distribution bottom can be reduced, and so that the flow of the treatment air through the material bed is distributed in a desirable manner across the entire air distribution bottom regardless of the composition of the material bed and the distribution thereon, and optimal heat exchange efficiency is obtained.
Abstract:
A parallel flow heat exchanger system (10, 50, 100, 200) for heat pump applications in which single and multiple paths of variable length are established via flow control systems which also allow for refrigerant flow reversal within the parallel flow heat exchanger system (10, 50, 100, 200), while switching between cooling and heating modes of operation. Examples of flow control devices are an expansion device (80) and various check valves (70, 72, 74, 76). The parallel flow heat exchanger system may have converging or diverging flow circuits and may constitute a single-pass or a multi-pass evaporator together with and a multi-pass condenser.
Abstract:
Die Erfindung betrifft einen Abgaswärmeübertrager (2), insbesondere für Kraftfahrzeuge mit einem Hauptströmungsweg und einem Nebenströmungsweg (Bypass) für das Abgas, mit einer den Abgasstrom steuernden Ventileinrichtung (3), die von einem Stellmotor (4) mittels einer Übertragungseinrichtung (8, 6) betätigbar ist, wobei die Ventileinrichtung (3) ein auf einer Ventilwelle (a) befestigtes Ventilschließglied aufweist. Es wird vorgeschlagen, dass die Ventilwelle (a) durch eine Drehfeder (5) belastbar ist, welche einerseits an der Ventilwelle und andererseits an der Ventileinrichtung (3, 3a) abstützbar ist.
Abstract:
Es kann ein Strom von Abgasen aus der Verbrennung von kohlenwasserstoffhaltigen Brennstoffen mit variabler Temperatur durch Auftrennen der Abgase in zwei separate Teilströme, Kühlung des einen Teilstroms und anschließende Wiederzusammenführung beider Teilströme erzeugt werden. Die Temperatur des wieder vereinigten Abgasstromes kann durch entsprechendes Drosseln der beiden Teilströme vor ihrem Wiederzusammentritt zwischen der Temperatur der Verbrennung der kohlenwasserstoffhaltigen Brennstoffe und der Temperatur des gekühlten Abgasteilstromes eingestellt werden. Der so erzeugte Abgasstrom wird bevorzugt zur definierten Alterung von Autoabgas katalysatoren eingesetzt. Dabei ist es von besonderem Vorteil, daß die Änderung der Temperatur des Abgasstromes keinen Einfluß auf seine Luftzahl hat.
Abstract:
The present invention relates to a heating device adapted for heating a fluid comprising a heat exchanging system (1) having means for passage of at least one fluid (2, 3), a mounting block (6) on which the heat exchanging system (1) is mounted comprising at least one fluid flow inlet (10) of a fluid to be heated, and at least one fluid flow outlet (11) of the same fluid that has been heated and a fluid bypass system (16) arranged between the at least one fluid flow inlet (10) of a fluid to be heated and the at least one fluid flow outlet (11) of the same fluid that has been heated, wherein the fluid bypass system (16) comprises at least one preset fluid flow obstruction means (17) regulating excess fluid flow, in a preset manner, of the fluid to be heated between the at least one fluid flow inlet (10) of a fluid to be heated and the at least one fluid flow outlet (11) of the same fluid that has been heated.