Die Erfindung betrifft einen Wärmeerzeuger mit zwei Brennern und einem Wärmeübertrager, wobei die Brenner den Wärmeübertrager mit Wärme versorgen, um die durch den Wärmeübertrager fließende Flüssigkeit zu erwärmen. Um einen hohen Modulationsgrad für die Heizleistung bei kompakter Bauweise des Wärmeerzeugers zu erreichen, sieht die Erfindung vor, dass dem Wärmeübertrager neben dem ersten Brenner in einer einzigen Brennkammer ein zweiter Brenner zugeordnet ist, die auf unterschiedliche Heizleistungen ausgelegt sind und auf verschiedene, auf diese Heizleistungen angepasste Teilbereiche des gemeinsamen Wärmeübertragers und/oder in unterschiedlichen Richtungen auf diese Teilbereiche einwirken, und dass in Abhängigkeit von dem Heizleistungsbedarf der erste Brenner und/oder der zweite Brenner in Betrieb setzbar ist (sind).

L'invention décrite a pour objectif de réaliser un concept de chauffage évolutif soit dans le domaine du type d'appareil (poêle, chaudière) , soit dans le domaine de la puissance, quelque soit le type d'appareil, soit dans le domaine de la nature du combustible utilisé.

Les évolutions mentionnées ci-dessus se font avec la même cellule à laquelle sont associés des dispositifs spécifiques au type des évolutions choisies.

Ce concept est matérialisé par un objet monobloc de forme spécifique appelé "cellule". Cette cellule est placée au coeur de l'appareil de chauffage représenté (fig.1 et fig.2).

Method and apparatus (80) are provided for establishing and controlling the stability and movement of a reaction wave of reacting gases in a matrix (104) of solid heat-resistant matter, wherein such reacting gases may be recuperatively pre-heated. At least a portion of the bed is initially preheated above the autoignition temperature of the mixture whereby the mixture reacts upon being introduced into the matrix thereby initiating a self-sustaining reaction region, after which the pre-heating can be terminated. The stability and movement of the wave within the matrix is maintained by monitoring the temperatures along the flowpath of the gases through the bed and adjusting the flow of the gases and/or vapors or air to maintain and stabilize the wave in the bed. The method and apparatus provide for the reaction or combustion of gases to minimize NO_x and undesired products of incomplete combustion. A recuperative heat exchange system may be used to preheat the reactants with heat generated by the reaction by channeling hot exhaust gases through the matrix surrounding reactant inlet tubes (96). The inlet tubes are thermally conducting and contain an interior matrix. The matrices interior to and surrounding the inlet tubes promote radiative heat transfer.

Method and apparatus (80) are provided for establishing and controlling the stability and movement of a reaction wave of reacting gases in a matrix (104) of solid heat-resistant matter, wherein such reacting gases may be recuperatively pre-heated. At least a portion of the bed is initially preheated above the autoignition temperature of the mixture whereby the mixture reacts upon being introduced into the matrix thereby initiating a self-sustaining reaction region, after which the pre-heating can be terminated. The stability and movement of the wave within the matrix is maintained by monitoring the temperatures along the flowpath of the gases through the bed and adjusting the flow of the gases and/or vapors or air to maintain and stabilize the wave in the bed. The method and apparatus provide for the reaction or combustion of gases to minimize NO_x and undesired products of incomplete combustion. A recuperative heat exchange system may be used to preheat the reactants with heat generated by the reaction by channeling hot exhaust gases through the matrix surrounding reactant inlet tubes (96). The inlet tubes are thermally conducting and contain an interior matrix. The matrices interior to and surrounding the inlet tubes promote radiative heat transfer.

A heat transfer system has a rotary machine 22 with compressor and expander regions and gas is first compressed in machine 22, passes through heat exchanger 23, is heated in combustor 24, then expands in machine 22, then passes through heat exchanger 23 to heat the gas, then passes through heat exchanger 107 to heat fluid in line 108. The machine 22 drives a heat pump 110 to heat fluid in line 111. Arrangements having two rotary machines are also described.

A rotary machine has a rotor eccentrically mounted in a casing having axial end parts and a circumferential part and with vanes defining compartments with the casing and providing a compression region and an expansion region, valve means 65 in the circumferential part adjacent the upstream edge of the outletfrom one or both of the regions and responsive to pressure in the adjacent compartment to reduce or avoid excess pressure in the compression region or suction in the expansion region.

A rotary machine has a rotor eccentrically mounted in a casing with vanes defining compartments with the casing and providing a compression region and expansion region, in which the rotor has axial parts between which the vanes are located, the axial parts comprising inner and outer parts 221a, 222a defining an internal recess 221d, 222d.

Outlet temperature ΔThw, which is temperature of a heating medium flowing out from a heating heat exchanger for exchanging heat between a refrigerant compressed by a compressor and a liquid heating medium is acquired (step S1). A fundamental frequency is calculated in accordance with a temperature difference obtained by subtracting current outlet temperature Thw from target outlet temperature and in accordance with current outside air temperature Ta (step S3). A positive first correction value is added to a correction frequency when the temperature difference is larger than a positive first reference value and a temporal variation in the outlet temperature Thw is smaller than a reference (step S6). An operating frequency of the compressor is controlled in accordance with a sum of the fundamental frequency and the correction frequency (step S10).

A power control apparatus includes a controller configured to control a fuel cell. The fuel cell generates power and heats water using fuel gas.The fuel gas supplies the power and hot water to a plurality of consumer facilities. The controller obtains an amount of the fuel gas used by the fuel cell. The controller obtains an amount of the hot water supplied to the plurality of consumer facilities. The controller calculates, based on the amount of the fuel gas and the amount of the hot water, an amount of the fuel gas used by each one of the plurality of consumer facilities.

Ein Wasserbadverdampfer (3) für eine verfahrenstechnische Anlage (1), mit einem Mantel (4), einem innerhalb des Mantels (4) angeordneten Kernrohr (19), das einen ersten Endabschnitt (20) und einen dem ersten Endabschnitt (20) abgewandten zweiten Endabschnitt (21) aufweist, und einem Rohrbündel (22), das in einem zwischen dem Mantel (4) und dem Kernrohr (19) vorgesehenen Spalt (26) angeordnet ist, wobei das Kernrohr (19) mit Hilfe des ersten Endabschnitts (20) fluiddicht mit einem Boden (11) des Mantels (4) verbunden ist, und wobei der zweite Endabschnitt (21) des Kernrohrs (19) fluiddurchlässig ist.

A cogeneration system allows users to easily know a remaining power generation duration and prepare for stop of power generation when the cogeneration system is in independent operation. The cogeneration system includes: a cogeneration apparatus which generates electric power using supplied fuel gas (151) and supplies the electric power and heat (102); a heat accumulator (103) which accumulates the heat supplied by the cogeneration apparatus (102); a controller (106) which controls at least start and stop of the cogeneration apparatus (102); and a display unit (104) that displays a remaining power generation duration which is a length of time for which the cogeneration apparatus (102) can continue power generation. The controller (106) further calculates the remaining power generation duration based on a remaining heat accumulation capacity which is a difference between (a) a maximum accumulable heat amount which is the amount of heat the heat accumulator (103) is capable of accumulating and (b) a current accumulated heat amount that is the amount of heat currently accumulated in the heat accumulator (103), and causes the display (104) unit to display the calculated remaining power generation duration.