摘要:
A tube in a fire tube boiler, designed to convey exhaust gases and in contact with the water to be heated at an outer surface of the wall (2, 6, 10, 15, 21), which has a constant thickness; the tube has, in contact with the inner surface of the wall having a constant thickness, a plurality of elements (3, 7, 8, 9, 11, 12, 13, 16, 17, 19, 20) provided with protrusions which are mutually locked by elastic deformation.
摘要:
In a water tube boiler comprising a housing enclosing tubes bent to form vertical chambers successively traversed by rising hot combustion gases, the tubes being connected at the bottom to the interior of the jacket of a jacketed cylindrical combustion chamber, which jacket is supplied with cold water, and at the top to a steam manifold, the manifold and jacketed chamber project beyond the housing with a downcomer outside the housing connecting the top of the jacket and the lowest part of the manifold, thereby permitting the boiler to operate with a shallow level of water in the manifold, speeding up circulation of water and its heating, and permitting substantially dry steam to be discharged from the upper manifold. The chambers may include baffles which are angled so that the hot gas hits them at an angle less than 90° so as to be deflected thereby in the direction of its advance, thereby avoiding hot spots. Advantageously successive chambers from bottom to top are reduced in volume to make up for the reduction in volume as the hot gas cools, thereby keeping the gas velocity high and maintaining turbulence which helps heat exchange. A gas or oil burner is situated so that its flame is within the water-cooled jacketed chamber. Alternatively, instead of burning fuel within the chamber, the chamber can be supplied with waste heat as from a turbine exhaust.
摘要:
Known chimneys or chimney furnaces use flue gas flow units for heating buildings, said devices having displaceable or fixed obstacles for deflecting flue gas for generating flue gas turbulence. The invention relates to a device and method for transferring heat through a flue gas discharge pipe (28) in which (44, 45) pivotal guide plates (37) are inserted in the longitudinal direction of the pipe run, at which the flue gas flow (22) is more or less deflected in a sinuous line as a function of the pivot angle (24) of the guide plates (37) that can be adjusted during furnace operation. A fan (19) can increase the flue gas flow (22). An optional furnace heat exchanger (29) generates additional hot water as needed. The controller (5) activates the actuators for the fan (19), guide plate pivot angle setting (24), and at least one circulating pump (10 or 11) as a function of the prescribed controlled variables such as flue gas temperature, reservoir temperature, heat exchanger performance, or flue gas flow. Due to the improved combustion, the invention enables increasing the energy efficiency of the furnace system, reducing pollutant emissions and fuel consumption, and increasing operator comfort. The independent adjustability and activation of the media flow makes integration in other heating circuits easier. Water or solar carrier fluid can be used as a heat transfer fluid for storing heat.
摘要:
Vorrichtung ( 1 ) für den Eintritt von Heißgas in ein Heizflächenrohr eines Abhitzekessels mit einem mit der Kesselwandung, insbesondere mit dem Rohrboden ( 11 ), verbundenen Außenrohr ( 3 ), einem an dem Außenrohr ( 3 ) über eine abgerundete Umkehrkappe ( 6 ) unter Ausbildung einer Eintrittsöffnung ( 16 ) für das Heißgas ( 7 ) anschließenden und von dem Außenrohr ( 3 ) mit Abstand umschlossenen Innen- bzw. Eintrittsrohr ( 5 ) mit Einströmabschnitt ( 17 ) und einem mit dem Heizflächenrohr verbundenen Abströmabschnitt ( 18 ) und mit einem zwischen Außenrohr ( 3 ) und Innenrohr ( 5 ) angeordneten Kühlmittel - Leitrohr ( 4 ), das sich bis in die Nähe der Umkehrkappe ( 6 ) erstreckt, wobei der Einströmabschnitt ( 17 ) und zumindest ein Teil des Abströmabschnittes ( 18 ) des Eintrittsrohres ( 5 ) konisch ausgebildet ist, wobei die Konizität weniger als 2° beträgt und der lichte Querschnitt des konischen Bereiches ( 19 ) des Eintrittsrohres ( 5 ) sich in Richtung des Abströmabschnittes ( 18 ) hin verringert, die Länge ( L ) des konischen Bereiches ( 19 ) wenigstens das 4-fache des Innendurchmessers ( d ) des Eintrittrohres ( 5 ) beträgt und der konische Bereich ( 19 ) des Eintrittsrohres ( 5 ) mit wenigstens zwei unterschiedlichen Konizitäten ausgebildet ist (Figur 1).