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Daniel Coakley presented at the recent CIBSE Symposium on “Integration for whole life building performance.” His session looked at the “Development of calibrated operational models of existing buildings for real-time decision support and performance optimisation.” Building simulation tools are commonly used in design for performance appraisal and optimisation. However, numerous studies have found that actual building performance often deviates significantly from simulation predictions.
You can view the presentation here:
There is also an accompanying paper, which proposes a detailed framework to produce calibrated operational models, which can support operational decision-making, and real-time control optimisation.
The approach centres around a three-tier calibration process:
• Tier 1 focuses on Building level (Demand-side) variables (e.g. occupancy, equipment, infiltration).
• Tier 2 focuses on system-level (HVAC) model components (e.g. heating / cooling coil capacities). In this phase, we use detailed building data combined with genetic optimisation techniques to calibrate relevant input parameters. In the case where system performance modelling is not necessary, we use free-form profiles (i.e. measured building data) to supplement these model components. Once system-level noise has been eliminated.
• Tier 3 calibrates the remaining plant-level parameters (e.g. central plant, electricity consumption, etc.).
The approach is supported by two novel developments:
(1) Free-form profiles: These are actual historic trends from existing building controllers, which are used to supplement model components where appropriate;
(2) Genetic Optimisation algorithms are utilised to efficiently navigate the solution space to reduce discrepancies between the model and actual system performance. The proposed calibration approach builds upon prior research efforts to standardise the calibration process using evidence-based model development, combined with sensitivity and uncertainty analysis.
Click here to read the full paper.
In a testament to the talent and high level of expertise of our people, Consulting-Specifying Engineer (CSE) magazine, for the 5th time, have selected an IES member of staff to receive a prestigious 40 under 40 award. This year’s winner is Colin Rees, Consultancy Manager at IES.
The award is given to 40 non-residential building industry professionals age 40 and younger who stand out in personal and professional aspects of their lives. And Colin certainly does. As the longest serving Consultant with 14 years of service, Colin has supported the start-up of two IES office’s, San Francisco in 2007 and Pune in 2010. He’s played a key part in ensuring the sustainability and high performance of many renowned projects across the world and has used his expertise and experience to mentor and train other consultants in the IES Consultancy team to help make it the dedicated, highly experienced team it is today. Read Colin’s full winner profile.
Previous IES winners are:
We pride ourselves in hiring people who are committed to sustainability and passionate about what we do. And in turn we offer a flexible and supportive working environment and the opportunity to work with a team of friendly, interesting and diverse people from across the globe. If IES sounds like a place you’d like to work, then keep an eye on our vacancies and follow @IESCareers on twitter. You can also send in a speculative CV to firstname.lastname@example.org.
You can view profiles of all this year’s 40 under 40 winners on CSE Magazine’s website.
As the doors to All Energy closed the other week, so did the end of a busy week for IES. Our R&D division presented on five different European funded projects we’re currently involved in:
INDICATE: Towards the development of a virtual 3D city model: Dundalk, Ireland
Aiden Melia, Project Manager, IES
NewTREND: Next Generation district integrated building retrofit
Nick Purshouse, Project Manager, IES
IMPRESS: Energy reducing pre-fabricated retrofit panels (BIM) integrated
Nick Purshouse, Project Manager, IES
Last Week Daniel Coakley of IES spoke on the topic of “Modelling Natural ventilation in the IESVE: Case studies & Research Outlook” at a half day seminar, organised by Cork Institute of Technology (CIT), for researchers, designers, engineers & architects.
This CIT Technical Seminar: Ventilative Cooling & Overheating Risk was organised in collaboration with IEA-EBC Annex 62 and presented state of the art utilisation of ventilation for reducing cooling energy demand and addressing the risk of overheating in low energy buildings.
In his presentation, Daniel covered;