dynamic simulation

Atrium is becoming a popular common space in commercial buildings nowadays. In planning the thermal environment and air-conditioning system for an atrium, it is necessary to calculate a cooling load for the occupied zone and to predict the vertical temperature distribution. Besides, the thermal environment varies with time, so dynamic thermal environment analysis, including prediction of vertical temperature, is required. The building design process of the atrium consists of several different stages.

A good level of thermal insulation and an adequate thermal capacity of the building envelope are essential to achieve good energy performance. Many studies have been conducted about this topic, mostly focused on the reduction of energy losses, peak load control and energy savings. Nevertheless, very few studies were realized addressing both insulation and inertia of the building envelope in a thermal comfort perspective, and taking into account the combined effect of different ventilation strategies.

In this past decade, glazed façades use in new buildings has soared. Some of these façades, called "double skin façades", are made of internal and external glazing. As indicated by its name, "double skin façades" are a special type of envelope which air s

We present the dynamic modelling of an absorption system and an application to a large air-conditioned system. This study was performed using the ALLAN.Simulation software, a pre- and post- processor enabling the symbolic description of systems. The absorption system is a direct gas double effect absorption chiller or heater, using LiBr/HB2BO as working fluid. This modelling has two aims. The first one is to optimize the water circuit by determining the volume of a storage tank that maximise the energetical and economic operation performances.

The EPBD prescribes an energy performance certificate for buildings. According to the nationalimplementations of the EPBD for non-domestic buildings the specific data of the building will begathered during the certification process and combined into a multi zone model describing buildingand building systems from an energetic point of view.

The environment demands clean and energy efficient processes. At the same time, higher demands are being placed on thermal comfort, whilst we are also interested in how climate control equipment will behave over time - for instance in terms of reliability and control. The only way to meet all these needs is to use dynamic simulation. The Climasim project strives to develop a simulation platform that will allow several different building services components to be linked together to form climate control units. This services model can then be coupled to a building model.