. : C A R N O T B l o c k s e t ™ : .
for use with MATLAB® and Simulink®
The Conventional and Renewable Energy Optimization (CARNOT) Blockset extends the capabilities of Simulink to modeling and simulating the dynamics of heating systems.
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Key Features
The CARNOT Blockset a rich set of tools for modeling and simulating heating systems:
Below is an example of a simple solar hot water system modeled with The CARNOT Blockset. The model combines a solar collector (a heat source) with a simple water storage device which buffers the solar energy and provides heat to the consumer.
The Collector Model is a one-dimensional multinode model for thermal collectors which includes parameters for optical efficiency as well as radiative and wind dependent losses. In the present example, parameters of the model were identified by MATLAB based on actual measured data. The Storage Model is also a multinode one-dimensional model. Any number of ports (pipes or heat exchangers) can be connected to the model. The internal heat exchangers may be used as stratified charging heat exchangers.
The overall system consists of two cycles: the collector or charging cycle and the consumer or discharging cycle. In the discharging cycle, cold water from the water tap is supplied to the storage while hot water is released from the storage. The cold water consumption is modeled as by a water pump with constant mass flow rate (the water tap block) and a repeating sequence. In the charging cycle, the cold water from the storage is “pumped” by means of thermosyphon effects to the collector.
Notice that the blocks connect via THV (Thermo-Hydraulic Vector) lines which pass necessary system information from one block to another. This method is used to compensate for Simulink’s unidirectional concept of data flow.
Applications
The CARNOT Blockset has been successfully applied to many applications, including:
The CARNOT Blockset requires MATLAB 6.0 and Simulink (Release 12.0). A web browser is recommended in order to use the online-help facilities. The blockset is available for Microsoft Windows 98/NT 4.0/2000/XP.
MATLAB® and Simulink® are registered trademarks of The MathWorks, Inc., U.S.A. CARNOT Blockset is a trademark of ExpertControl GmbH, Germany
send me info | DataSheet
Key Features
The CARNOT Blockset a rich set of tools for modeling and simulating heating systems:
- design and optimization of systems
- determination of the energy gain of solar thermal systems
- calculation of the energy consumption in conventional systems
- parameter-identification from measured data (e.g. for component and system test)
- design, optimization and implementation of controllers
- test of components connected to the computer (hardware in the loop)
- control of energy systems in a hardware in the loop environment
- development and improvement of advanced innovative components
- easy implementation of customized functions in existing components (e.g. bacteria growth in hot water systems)
- economic analysis
- ecological analysis
- creation of libraries containing components of different producers
- export of the system model as stand alone program (e.g. for the design of standard systems with few varying parameters)
Below is an example of a simple solar hot water system modeled with The CARNOT Blockset. The model combines a solar collector (a heat source) with a simple water storage device which buffers the solar energy and provides heat to the consumer.
The Collector Model is a one-dimensional multinode model for thermal collectors which includes parameters for optical efficiency as well as radiative and wind dependent losses. In the present example, parameters of the model were identified by MATLAB based on actual measured data. The Storage Model is also a multinode one-dimensional model. Any number of ports (pipes or heat exchangers) can be connected to the model. The internal heat exchangers may be used as stratified charging heat exchangers.
The overall system consists of two cycles: the collector or charging cycle and the consumer or discharging cycle. In the discharging cycle, cold water from the water tap is supplied to the storage while hot water is released from the storage. The cold water consumption is modeled as by a water pump with constant mass flow rate (the water tap block) and a repeating sequence. In the charging cycle, the cold water from the storage is “pumped” by means of thermosyphon effects to the collector.
Notice that the blocks connect via THV (Thermo-Hydraulic Vector) lines which pass necessary system information from one block to another. This method is used to compensate for Simulink’s unidirectional concept of data flow.
Applications
The CARNOT Blockset has been successfully applied to many applications, including:
- design of a district-heating with co-generation
- design of a controller for house-heating systems
- design of a latent heat storage device
- parameter-identification of solar collector and hot water storage-tanks for dynamic testing
The CARNOT Blockset requires MATLAB 6.0 and Simulink (Release 12.0). A web browser is recommended in order to use the online-help facilities. The blockset is available for Microsoft Windows 98/NT 4.0/2000/XP.
MATLAB® and Simulink® are registered trademarks of The MathWorks, Inc., U.S.A. CARNOT Blockset is a trademark of ExpertControl GmbH, Germany
