This paper presents CADES, a framework dedicated to system design, based on optimization needs. The framework is defined with a standard implementing the software component paradigm and a pattern to use it. Indeed, this pattern details how to create and use a component (the model of the device to design). This paper highlights the component standard, a generator based on analytical expressions of the system, and an optimization service.

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The optimal building management requires developed models to predict building's systems behavior. We propose to achieve this goal, by making available on the web, remote computation services for the composition, simulation and optimization of buildings components. A paradigm shift is necessary in order to fulfill this goal. The well suited paradigm is software components, associated with web-services technologies. We show that models can be embedded in software components and after that, made available on the web without any special effort of the user. We illustrate the use of a web-service calculation by the realization of a remote optimization without ever holding the model..