Tuesday, January 31, 2017: 8:00 AM-9:30 AM
Building Operation and Performance
Chair:
Tim Dwyer, CEng, UCL Institute for Environmental Design and Engineering (IEDE)
Sponsor: CIBSE ASHRAE Liaison Committee
CoSponsor: 2.8 Building Environmental Impacts and Sustainability
When buildings are designed the predicted energy performance is often over optimistic and, in many cases, owners and occupants suffer from excessive operational costs with unsustainable buildings. This seminar considers how this performance gap can be practically removed by applying methods that more properly understand the reality of the operating building; the sensible application of data rich building modelling software for lifelong performance and future refurbishment; by unravelling end-user expectation to inform the design and construction of a world-beating basketball arena and, finally, by connecting design with performance. Real projects are used to illustrate the explanations.
1 Towards Robust Building Design: A Systematic Approach to Mitigate Design Risk
Modern buildings designed for certification under green building rating systems are commonly rated high based on their predicted energy performance. In many cases, their actual performance deviates from the prediction. The discrepancy can be attributed to the difference between the assumptions made in the building design and the actual operating conditions. It is important to identify robust designs that perform consistently even under varying conditions. This presentation proposes a design approach that incorporates risk assessment for multiple design aspects into an energy performance evaluation workflow. The approach will help mitigate design bias in conventional design approaches.
2 The Role of Building Information Modelling Data for Design and Post Design Purposes
This seminar considers the Glorya Kaufman International Dance Center at the University of Southern California LA project that was handed over in summer 2016. Working with the demanding, yet knowledgeable, technical facilities team the fully connected MEP BIM systems model was developed employing equipment manufacturers' BIM components with data rich component information. As well as delivering design detail the BIM provided record drawings with commissioning data and drastically reduced the RFIs compared the traditional design flow. The BIM model will be maintained by the on-site facilities team and updated to manage maintenance and to inform future refurbishment work.
3 Reinventing the Professional Sports Arena
This presentation sets out a methodology that resets the traditional brute force approach applied in North American venue HVAC design and develops a performance based solution focusing on the wellness and comfort of the attending fans, the venue flexibility and the environmental footprint. This has been applied to the home of the Sacramento Kings professional basketball team that opened for the 2017 NBA season and aims to be the world's most sustainable arena providing fans with the most comfortable and well connected environment. The novel 'fan oriented' design process will be discussed that utilized advanced simulation and building prototyping techniques.
4 Design and Assessment Procedures to Produce Well-Performing Buildings
Assessment procedures, schemes and initiatives will be discussed which result in buildings which perform well in practice, and perform as modelled. The concept of design, and modelling for performance is explored along with schemes and processes which do or do not include these features. The characteristics of schemes which have been effective in this way are identified along with a relevant technical aspect - modelling - and a procedural aspect - the nature of the performance prediction or guarantee. Examples of projects are used to illustrate features, and current developments described along with suggestions for further development.