Abstract:
A method to continuously operate and balance electrical and thermal energy in cogeneration and tri-generation processes. The methods employ the use of variable speed pumps, electrical heating elements, liquid/liquid exchangers to efficiently operate and balance electrical and thermal energy loads in cogeneration and tri-generation processes.
Abstract:
The invention discloses a method for operating a co-generation system comprising a boiler (1), an evaporator (2), an expansion machine (4) and a condenser (6). The method comprises the following steps a) if a first condition is met: supplying a working medium to the evaporator, supplying the evaporated working medium to the expansion machine and operating the expansion machine in such a way that the working medium is expanded, supplying the expanded working medium that has been expanded by the expansion machine to the condenser and transferring heat to a medium in a heating circuit; and b) if a second condition, which is different from the first condition has been met: i) supplying at least part of a working medium to the condenser of the co-generation system, without part of the medium being supplied to the expansion machine, and transfer of heat to a medium in a heating circuit and/or ii) supplying a medium that is supplied from the boiler to the evaporator to a heat transfer device, in which heat is transferred to a medium in a heating circuit.
Abstract:
The present invention is directed to provide an operation method for a micro-cogeneration system that enables the use of heat recovered from a cogenerator for both space heating and generating hot water by connecting the cogenerator and a heat transfer medium channel of the boiler, thereby reducing the cost required for operating the cogeneration system, and facilitates the control of heat to be supplied in heating mode and in hot water mode. To this end, the present invention comprises: operating a cogenerator (100) having a heat exchanger (110) for recovering waste heat that is produced during the power generation; performing a control operation in such a manner that a heat transfer medium supplied from the cogenerator (100) is stored in a heat transfer medium reservoir tank (300) after going through a boiler (200) connected to the heat exchanger (110), and the heat transfer medium stored in the heat transfer medium reservoir tank (300) is circulated into the heat exchanger (110) of the cogenerator (100); operating only the cogenerator (100) when there is no heating and hot water loads; and stopping the operation of the cogenerator (100) if it is determined that the temperature of the heat transfer medium inside the heat transfer medium reservoir tank (300) has reached a preset temperature.
Abstract:
Apparatus (10) for heating a fluid comprises a conduit (12) defining a flow path (12.4) for the fluid extending between an inlet (12.1) and an outlet (12.2) for the fluid. A turbine (14) is arranged to be driven by the fluid flowing in the flow path. A generator (16) of electricity is connected to be driven by the turbine. An electrical heating element (20) is connected to the generator to be energized by the electricity and to heat the fluid in a heating region (12.3) of the conduit (12).
Abstract:
A controller for controlling a combined heat and power (CHP) system which can include one or more CHP units, can comprise a high level optimizer and one or more low level optimizers. The high level optimizer can be configured to optimize a total cost of producing heating, cooling, and electric power, by allocating total heating, cooling, and/or electric power setpoints one or more CHP unit types, based on the fuel price, CHP unit operational constraints, and/or heating, cooling, and/or electric power demand. The low level optimizer can be configured to allocate cooling, heating, and/or electric power setpoints to individual CHP units, based on the high level allocation to CHP unit types.
Abstract:
The invention relates to a thermal solar system comprising a collector that is connected to a heat sink, in particular a heat storage medium, by way of a solar circuit containing a heat exchange medium. In order to reduce the danger of overheating of the system during idling and to improve the efficiency of the solar system, it is proposed that the solar circuit be connected temporarily to at least one heat exchanger by way of a valve control unit, said heat exchanger being disposed at a hot side of a thermogenerator receiving an inflowing heat flow and that a thermal insulation reduces the exchange of thermal energy between the collector of the thermal solar system and the heat exchanger.
Abstract:
Die Erfindung betrifft eine thermische Solaranlage mit einem Kollektor, der über einen ein Wärmeträgermedium enthaltenden Solarkreislauf mit einer Wärmesenke, insbesondere einem Wärmespeicher verbunden ist. Um die Gefahr der Überhitzung der Anlage im Leerlauf zu reduzieren und die Effizienz der Solaranlage zu verbessern, wird vorgeschlagen, dass der Solarkreislauf mittels einer Ventilsteuerung zeitweilig mit mindestens einem Wärmetauscher verbindbar ist, der an einer einen einfließenden Wärmestrom aufnehmenden heißen Seite eines Thermogenerators angeordnet ist und zwischen dem Kollektor der thermischen Solaranlage und dem Wärmetauscher eine Wärmedämmung den Austausch von Wärmeenergie verringert.
Abstract:
The invention relates to a thermogenerator comprising several thermocouples that are electrically connected together, said thermocouples being arranged between one hot side receiving a flowing thermal flow and a cold side that is arranged at a distance from said hot side. The aim of the invention is to produce, based on the known thermoelectric generators, a thermoelectric generator that at least temporarily uses the fed thermal energy efficiently. The solution of said aim is based on the idea that the thermoelectric generator can be designed as a module comprising a collector for a thermal solar system and the thermal carrier medium flowing through the collector is guided, at least temporarily, to a thermoelectric generator by means of a heat exchanger.
Abstract:
The invention concerns a device (1) for generating electrical energy with at least one piezo element (6, 7). It is endeavoured to enable local generation of electrical energy. For this purpose, at least one thermal expansion element (2) is in active connection with the piezo element (6, 7).
Abstract:
A device (1) for heating, generating electric power and cooling enclosed spaces, which is connected to at least one closed-circuit pipe (2) which acts by thermal radiation and comprises at least one turbine or microturbine (4) of the axial or tangential type or of the type that merges into the closed-circuit pipe (2), placed in partial vacuum by means of a first fan (12). An alternator (22) for generating electric power and means for feeding the power to the grid or to user devices, and an absorber (25) for generating cool air or refrigerated water, are connected to the turbine or microturbine (4).