Building Energy Simulation Workshop

Natural Ventilation and Mixed Mode Operation

Venue: Centre for Advanced Research in Building Science and Energy, CEPT University, Ahmedabad
Dates: 12-14 December 2014
Total seats: 25 (limited free seats available)
Fees: INR 15,000 (+12.36 % service tax)

Building energy simulation has been available to researchers since almost four decades. However, it has only been in the last decade that an increase in computing power and development of graphic user interface have allowed designers to use it in commercial practice. The integration of energy and mass flow calculations in the same engine to investigate mixed mode operation of buildings, for example, natural ventilation and heating/cooling systems, is even more recent. The EnergyPlus is one of the most modern building energy simulation engines with such features. When used with the Design Builder interface, the system provides powerful design and analysis capabilities which will be explored in the 20 contact hours spread over 2.5 days of workshop.

The workshop will involve hands on experience with, with the OpenStudio Plug-in for SketchUp from EnergyPlus and DesignBuilder software. A 30 day evaluation copy of Design Builder will be provided to participants. After covering the basics, viz., building envelope, glazing and shading, internal loads and schedules, the focus of the workshop will be on testing the effectiveness of a naturally ventilated building design. The integrated CFD engine will also be used to review air flow and temperatures.

Graphic_Simulation Workshop

Who should attend:

Designers, architects, engineers, building physicists and university students with an interest in buildings with natural ventilation and mixed mode operation.

Topics to be covered during the workshop:
1. Introduction to Building Energy Simulation
2. Building the Building Envelope
3. Glass and shade
4. Operable windows and controls
5. Internal loads and schedules
6. Heating/cooling loads
7. Natural ventilation and zone temperatures
8. Air flow through operable windows
9. CFD for natural ventilation
10. Brief introduction to :
  • Daylighting analysis
  • Detailed HVAC
Participants will be introduced to the capabilities of the Building Performance Laboratory of the CARBSE during the course of the workshop.

Faculty Members

Drury Crawley:

Dr. Crawley led development of the US Department of Energy’s EnergyPlus simulation program and Commercial Buildings Initiative (now Better Buildings), working to create low and zero-energy buildings. He has more than 35 years of experience in the field of building energy efficiency, renewable energy and sustainability. He is an ASHRAE Fellow and Distinguished Lecturer. Currently, he chairs TC 4.2 Climatic Information and Standard 169 Climatic Data for Building Design Standards. Dr. Crawley is also a Fellow of IBPSA, at-large board member since 1998.

P C Thomas:

PC Thomas has a long history with building energy simulation. He worked with TERI in the 1980′s, as a researcher with Solarch at the University of New South Wales in 1990′s, also worked with Arup (Sydney, Australia) in the early 2000′s. He now runs ‘Team Catalyst’ in Sydney, which specializes in achieving measured energy efficiency outcomes in buildings. He was a member of the IEA expert committee for BESTEST, (now ASHRAE SPC 140C).

Rajan Rawal:

Rajan Rawal is the Executive Director of the Centre for Advanced Studies in Building Science and Energy at CEPT University. Prof. Rawal leads the Indo-US Joint Clean Energy R&D Centre for Building Energy Efficiency sector (CBERD). He is a recognized trainer for building modelling and building energy efficiency.

Hardware Requirements
A laptop with followings specs:

A good 100% OpenGL compatible graphics adapter is required. The mid-range and better NVIDIA cards seem to be the most reliable. Some graphics adapters integrated with the motherboard we have tested are unable to run certain tools.


Windows XP SP2


2.4 GHz dual core processor or faster. Dual Core processors are recommended as they allow you to continue using your computer while simulations are carried out.


4 GB (or more) RAM.


5 GB free disk space


Pointing device


100% OpenGL compatible 3-D graphics adapter with hardware acceleration running in 32-bit color mode


1280×1024 pixels or larger screens for efficiency during the modelling process and for displaying high-quality visualization images and walk-throughs of models and CFD results.

i. Laptop should have internet connection.


Centre for Advanced Research in Building Science and Energy (CARBSE) at CEPT University aims at providing an impetus for research in energy efficiency in built environment and energy resource management at large. Its objective is to carry out in-depth research in the fields of energy efficient building design, energy efficient building construction processes, environment friendly construction materials and resource audit and management. It has been awarded the status of a ‘Regional Energy Efficiency Centre on Building Energy Efficiency’ by USAID ECO-III program and ‘Centre of Excellence’ by Ministry of New and Renewable Energy, Government of India. The centre is also leading research under the prestigious US India Joint Centre for Building Energy Research and Development. CARBSE is supported by Gujarat Energy Development Agency, industry and various philanthropic organizations. (

This workshop is partially supported by Ministry of New and renewable Energy, Government of India.


ASHRAE, the American Society of Heating, Refrigerating and Air-Conditioning Engineers, is the premier international body in the HVAC & Refrigeration field. It has more than 55,000 members in over 132 countries today. The mission of ASHRAE is to advance the arts and sciences of heating, ventilation, air-conditioning, refrigeration and related human factors to serve the evolving needs of the public & ASHRAE members. It is the foremost and authoritative source of technical and educational information, standards and guidelines. ASHRAE in INDIA has 7 Chapters and 2 Sections, including the Western India Chapter, which was established in 1996.

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