Abstract:
A tank-tankless water heater includes primary and secondary heat exchangers, and a combustor for the production of flue gases. In operation, water is first heated as the water and flue gases flow through primary heat exchanger. The water flows into the tank where it is stored and again heated as the flue gases flow through the secondary heat exchanger. A pump moves the water from the secondary heat exchanger, through the primary heat exchanger, and back to the secondary heat exchanger for storage as needed to maintain the stored water at a desired temperature Water is drawn from the secondary heat exchanger during initial demand to provide a ready source of hot water, and the hot water supply is maintained by the primary heat exchanger during sustained hot water draws. The primary heat exchanger may include a temperature or temperature differential control system.
Abstract:
A hot water supply type boiler is disclosed, in which cold water is heated by a waste heat recovery unit and a hot water supply heat exchanger, and then is again heated in a boiler container, thereby remarkably improving a fuel saving efficiency and heat exchanging efficiency. The boiler includes a waste heat exchanging means for primarily heating the water supplied from an exterior using waste heat of an exhaust gas, a hot water supply heat exchanging means for secondarily and thirdly heating mixed water of the primarily heated water and the water supplied from the exterior, and a boiler heat exchanging means for heating the water through the hot water heat exchanging means using the heat generated by a burner or heater and fourthly heating the thirdly heated water.
Abstract:
The invention relates to a heating device comprising at least one heat exchanger (1, 2) that spirals helically around a spiral axis, is traversed by a heating medium and is configured as a flat tube comprising ends (3, 4) of the spiral on the feed flow and return flow sides and heating medium connections (5), said heat exchanger defining a corresponding spiral-shaped flow opening. According to the invention, a cap-type sealing housing (12) is attached in a fluid-tight manner to at least one end (3, 4) of the spiral and the heating medium connection (5) is situated on said housing. At least one end (3, 4) of the spiral is obliquely truncated in relation to the spiral axis and the end of the sealing housing (12) on the spiral side has a corresponding inverse oblique configuration. Preferably, the heating medium connection (5) on the cap-type sealing housing (12) runs in the direction of the spiral axis.
Abstract:
Die Erfindung betrifft einen Heizkessel, umfassend eine Brennkammer (1), wobei die Brennkammer (1) mindestens teilweise von einem als Primärwärmetauscher ausgebildeten Heizgaszug (2) umschlossen ist, wobei der Heizgaszug (2) mindestens teilweise von einem wasserführenden Gehäuse (3) umschlossen ist, wobei dem Heizgaszug (2) ein wasserführender, hydraulisch mit dem Gehäuse (3) verbundener Sekundärwärmetauscher (4) nachgeschaltet ist. Nach der Erfindung ist vorgesehen, dass die Brennkammer (1) mindestens teilweise vom Sekundärwärmetauscher (4) umschlossen ist.
Abstract:
The heat exchanger, associated with a gas or fuel oil burner (6), comprises at least one tubular array (2) through which a fluid to be heated, particularly cold water, circulates and which is mounted inside a jacket (1) which is impermeable to gases, said tubular array (2) being exposed to hot gases generated by the burner (6), whereas the jacket (1) comprises a sleeve (122) for evacuating vapors. The device is characterized in that the jacket (1) has a wall portion which is embodied in the form of a compartment (11, 12) accommodating a gas/air (9) collector heat exchanger enabling part of the heat carried by the fumes exiting from the tubular array (2) to be collected, being displaced towards the exit sleeve (122) in order to transfer it to air captured inside the heat exchanger, whereby means such as a ventilator (V) are also provided in order to transfer air which is heated by the gas/air heat collector to the entrance of the burner (6). The condensation exchanger, particularly designed for domestic use, enables cold and dry vapors to be discharged into the atmosphere and supplies the burner with clean, pre-heated combustion air.
Abstract:
Cet échangeur de chaleur comprend deux faisceaux de tubes hélicoïdaux coaxiaux placés bout à bout, dont l'un (2a) fait office d'échangeur primaire et l'autre (2b) d'échangeur secondaire, chacun de ces faisceaux consistant en un tube et/ou en un groupe de tubes plats montés à l'intérieur d'une enveloppe (1) imperméable aux gaz, des moyens étant prévus pour faire circuler au moins un fluide à réchauffer à l'intérieur des tubes, l'enveloppe (1) présentant une manchette (122) d'évacuation des gaz, l'échangeur étant ainsi agencé qu'un premier gaz chaud, dit principal, par exemple généré par un brûleur (6), traverse radialement les interstices desdits faisceaux, un système déflecteur (7) assurant que ce gaz chaud principal traverse d'abord l'échangeur primaire (2a) de l'intérieur vers l'extérieur, puis l'échangeur secondaire (2b) de l'extérieur vers l'intérieur, après quoi il est évacué hors de l'échangeur via ladite manchette (122). Le déflecteur (7) est composé de deux plaques parallèles voisines (7a, 7b) réalisées dans un matériau thermiquement isolant et l'échangeur est ainsi agencé qu'on peut introduire entre ces plaques un second gaz chaud (additionnel) apte à assurer le réchauffage du fluide circulant dans l'échangeur secondaire, ou à contribuer à son réchauffage. Echangeur à condensation, notamment à usage domestique.
Abstract:
An indirect fired process heater apparatus and method. The apparatus includes a toroidal shell having an outer cylinder and an inner cylinder forming a fluid tight enclosure. A plurality of helical heat transfer coils have transfer fluid passing therethrough wherein said heat transfer coils form an axial passageway. A burner directs heat into the axial passageway. The toroidal shell is in fluid communication with the heat transfer coils in order to circulate the heat transfer fluid therethrough. A plurality of helical process heating coils pass through the toroidal shell in order to heat process fluid passing through the process heating coils.
Abstract:
A spiral shaped device (10) for thermally processing a gas stream (4) and a method of use thereof is provided. The spiral shaped device (10) has at least one sidewall (12) formed into a coil; at least one spiral passage, defined by the sidewall, for directing the gas stream (4) through the device, and having an inlet (20) and an outlet (22), and a matrix of heat resistant inert media (34, 36) disposed in at least a portion of the device (10). The device is particularly useful as a recuperative flameless thermal oxidizer for oxidizing organic material contained in the gas stream or as a heat exchanger. When the device is used as a flameless thermal oxidizer, the device preferably has at least two coiled sidewalls (12, 14), at least two spiral passages defined by the coiled sidewalls (12, 14); a chamber (32) located proximate to the interior ends of the coiled sidewalls for directing the gas stream from the spiral inlet passage (20) to the spiral outlet passage (22); and a matrix of heat resistant inert media (34, 36), preferably disposed in at least the chamber (32).
Abstract:
This invention concerns a boiler (11) fitted with a burner suitable for wall heaters or built-in kitchen heaters in which a mantle-shaped heat exchanger (15) made of pipe elements (43) connected in parallel and/or series divides the boiler chamber into a combustion chamber (17) and an exhaust chamber (19). The heat exchanger (15) has openings (41) for hot flue gases distributed over its mantle. The burner head disposed in the combustion chamber is suitable for burning oil and has a flame tube (23) with an axial flame opening (37) and a flame baffle element (39) disposed at a distance from the flame opening (37) which is constructed so that the flame is diverted into the space between the flame tube (23) and the heat exchanger (15). In addition, a fire chamber mantle can be disposed between the heat exchanger (15) and the flame tube (23) to protect the heat exchanger (15) from direct contact with the flame.
Abstract:
The invention relates to an apparatus for heating fluid, comprising: first supply means (2) for supplying fuel; second supply means (4) for supplying oxidizing agent; burner means (5) for combusting fuel and oxidizing agents after mixing thereof; and a first heat exchanger (8) to be heated by flue gases of the burner means (5) and arranged helically round the burner means (5).