Kristoffer Negendahl

• PhD, MS. Civ. Eng.
• Professor (Associate) at Technical University of Denmark

In the wake of uncompromising requirements on building performance and the current emphasis on building energy consumption and indoor environment, designing buildings has become an increasingly difficult task. However, building performance analyses, including those of building energy consumption and indoor environment, are generally conducted late...

Building designers make decisions in early design stages that have large impact on building performance, including those of energy-, daylight- and indoor environment performance. Building performance simulation (BPS) tools can support the designer, in making better decisions, by providing the performance consequences of design choices. However BPS...

In the wake of uncompromising requirements on building performance and the current emphasis on sustainability, including building energy and indoor environment, designing buildings involves elements of expertise of multiple disciplines. However, building performance analyses, including those of building energy and indoor environment, are generally...

The AEC industry is concerned about the value for money, interoperability and innovation of closed BIM software. A maturing OpenBIM ecosystem of free andOpen Source (FOSS) tools may soon provide viable alternatives to closed BIM tools. University BIM education could support a transition in the AEC towardsOpenBIM tools. Based on an evaluation of an...

In recent years semantic web ontologies have improved data interoperability within architecture, engineering, construction, and operation of buildings. One of the persisting issues inhibiting quality assurance is a lack of robust model validation of BIM models used for HVAC flow system simulation and analysis. This article provides a novel approach...

Life-cycle assessment (LCA) is currently one of the construction industry's most widely used methods of environmental assessment. Because LCA calculations is based on life-cycle thinking are the lifespan of the building a sensitive parameter in relation to the calculated overall environmental impact of the building. More accurate assessments of the...

While the construction sector is a major consumer of new raw materials, it also contributes largely to waste generation. Therefore, improved estimates of demolition waste and the identification of components and materials for reuse or recycling are an important prerequisite for better waste management in the construction sector. The aim of this stu...

In recent years semantic web ontologies have improved data interoperability within architecture, engineering, construction, and operation of buildings. One of the persisting issues inhibiting quality assurance is a lack of robust model validation of BIM models used for HVAC flow system simulation and analysis. This article provides a novel approach...

In the period from 2015 to 2018, five architectural design studios in Scandinavia, led by the Technical University of Denmark, used life cycle assessment (LCA) as an active design driver in their work [1]. Nearly all of the examined projects began with or ended in analyses that are different from what it is expected as being a common use of LCA. Th...

If the key to sustainable transformation is in the design process – what benefits do ICT tools bring? This is the central question addressed in the book by researchers and architects in the Nordic Region. Together they have developed and implemented digital tools in real design processes for three years. The capabilities of the tools include how de...

The Technical University of Denmark has been carrying out research in the energy balance of buildings in relation to indoor climate for decades. The last two decades have seen a major role played by research in the field of Integrated Energy Design (IED) focusing on the earliest design phases. The research has showed that the greatest effect in rel...

Early stage building performance optimisation as a viable approach is yet to be applied efficiently in building design processes, especially in the early design stages where the design space is open and changes are inexpensive. This article proposes a method of entire building energy optimisation in the early design stage. The main focus is to demo...

Termite is a parametric tool using the Danish building performance simulation engine Be10 written for the Grasshopper3D/Rhino3D environment. e tool Be10 is originally intended for building energy frame calculations and is required by Danish law when constructing new buildings. Termite opens up for fully parametric district- and city-size simulation...