HVAC SYSTEMS - HFT Stuttgart

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CHAPTER 02
does not provide a graphical programming interface, which makes the model
development of complex models difficult. Further disadvantages are missing
meteorological functions which are required e.g. to calculate the solar radiation
on different orientated façades and long calculation times when solving
simultaneous simulations.
EnergyPlus (open source) is a very powerful building simulation program (open
source) which includes building heat balance simulations as well as building
system simulations like HVAC or PV systems etc. and offers interfaces to
HVACSIM+ and other advanced software. The main disadvantage is the high
level computer literacy required and a missing structured free ware graphical
interface. A commercial graphical interface is provided by DesignBuilder which
makes the model development in EnergyPlus much easier.
SIMBAD Building and HVAC-Toolbox performs transient simulations of HVAC
plants with short time steps. SIMBAD Building and HVAC Toolbox is a HVAC
toolbox for the MATLAB/Simulink environment. The toolbox provides a large
number of ready to use HVAC models and related utilities to perform dynamic
simulation of HVAC plants. This toolbox in connection with other existing
toolboxes (Neural network, fuzzy logic, optimisation etc.) offers a powerful and
efficient tool for design and test of controllers. The weakness of this toolbox is
that there are no models available for solar heating and cooling systems.
Furthermore there are no detailed meteorological functions included.
INSEL 7.0 is a modular simulation environment, with software to understand,
plan, monitor, and visualize energy systems. For this purpose, INSEL provides
state-of-the-art functions as blocks for the simulation of meteorological data,
electrical and thermal energy components. These blocks can be interconnected
to a detailed model of a specific simulation problem. For the interconnection of
the INSEL blocks a runtime version of HP VEE can be used as graphical
interface. In the newer version INSEL 8.0 HPVEE is replaced by a new
integrated graphical interface. INSEL provides very detailed mathematical and
meteorological tool sets and basic simulation tools for solar thermal heating and
cooling systems.