A sustainability study is an independent study, usually on behalf of the building owners or managers, but also on behalf of an architect, who wants to know the condition of the building in terms of energy consumption and comfort, and what measures can be taken to improve it..
Sustainability studies are carried out by an in-house multidisciplinary team and based on the assignment, this is composed of project architects, technical construction- engineers, energy and -technical installation specialists.
The client´s request determines the study's focus. For example, the request can be to keep the valuable façade aspect of an existing building or interventions solely on the plant installation level. Another issue is whether to focus on the passive means: 'What is the effect of the orientation of certain spaces or the size of façade openings? What is the effect of night cooling?'
In all cases, firstly an in-depth audit of the current design is carried out; subsequently, the following questions are analysed. 'What is the state of the building envelope and technical installations? What is the thermal inertia of the building? What is the present energy consumption? What are the current problems?'
Measures to improve or to increase the building's sustainability are investigated, calculated, designed and evaluated. In defining the measures, we always look for a balance between the design ambitions, energy-efficiency, cost-effectiveness, comfort, use of materials and building management.
For this study, we use a wide range of different tools, including:
- EPB-software and / or numerical dynamic simulations to calculate the energy consumption and to evaluate the risk of overheating
- on site air-tightness measurements
- thermographic images and cold bridge simulations (Trisco)
- soundings and analysis of the thermal inertia
- daylight simulations, shadow studies and cooling load calculations
A sustainability study carried out by BB distinguishes itself by our customised approach, and practical and realistic descriptions of the measures.