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Case Studies
In the following case studies, you can learn more about how we apply an integrated design process and troubleshoot our projects.
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Gregers Reimann
Dec 11, 20244 min read
Solar Photovoltaic Yield: 16 years of Measurements from the CoolTek House, Malaysia
Great lessons from this pioneering domestic solar photovoltaic installation in Malaysia. Feel free to download the measured data.


Wei Han Wong
Dec 6, 20248 min read
COOLER Cities #02: Cool Roof Paint Retrofit
This case study showed annual energy savings of USD60,000 as well as greatly improving the thermal comfort from applying cool roof paint.


Marius Brun
Aug 23, 202411 min read
Invisible Shading for Glass Facades
A new and interesting facade shading system, MicroShade, that is invisible to the human eye. It allows slick fully glazed facades that shade

Romain Beaudouin
Aug 14, 20246 min read
Low-E Glass Impact on Thermal Comfort and Energy Savings
Thermographic documentation and detailed simulation analysis of the energy and thermal comfort benefits of using low-emissivity glass.

Sarah Salim
May 14, 20244 min read
COOLER Cities #01: Surface Temperatures
In this first of the "COOLER Cities" article series, we investigate the surface temperatures around us using our thermographic camera.


Gregers Reimann
Feb 5, 20245 min read
Beauty from the Beast: The Power of Retrofit
Our beautiful retrofit achieved remarkable saving in energy (5-fold), embodied carbon (7-fold), and doubling of the occupant satisfaction.


Annisa Ilias
Jan 24, 20242 min read
Beyond 25°C
Heard of the new government setpoint made last year? The question: Could we bump the setpoint even up beyond 25°C, and still be comfy?

Marine Guinee
Jul 20, 20234 min read
Sky Cooling and Dehumidification Concept
CFD simulations show a proof of concept for our innovative Sky Cooling System for Zero-Energy bedroom air-conditioning at night.

Marine Guinee
Jul 7, 20233 min read
Thermographic Investigation of Greenery on Facade
IEN undertook a thermographic investigation to quantify the cooling effect of facade greenery. A significant temperature drop was observed!


Yamona Segar
Oct 4, 20225 min read
Condensation Risk in a Hospital Building
IEN investigates through simulation the degree of thermal bridging and resulting risk of condensation on the ceiling space below

Gregers Reimann
Sep 19, 20223 min read
Recycling System for Apartment Buildings
In just 2 weeks we installed a recycling system costing less than RM8 (USD2.50) per apartment, and recycling rates more than doubled!

Charles Loo
Aug 17, 20223 min read
Adsorption Cooling from Low Temperature Waste Heat
We installed an adsorption chiller to turn waste heat into free cooling. Even low grade waste heat down to about 60degC can be used.


Suwan Bonma
Jun 30, 20222 min read
Thermal Comfort in the Dome-shaped Hall
The Issue A client approached us to undertake a thermal comfort study of an existing dome-shaped building located in the hot and humid...


Sheena Moses
Jun 9, 20224 min read
LEED for Existing Buildings Operations & Maintenance (O+M): Plaza33 Case Study
The article discusses the continuity of green building performance and optimization from a LEED Certified building standpoint.


Bjorn Bull Hansen
May 31, 20224 min read
Natural Ventilation of School Canteen
The following case study investigates natural ventilation concepts for a school dining pavilion.

Ir. Khim Bok Tan
May 26, 20223 min read
Energy Efficiency "Shopping List" – Getting the best Bang! for your Ringgit.
In this case study, we present how we put together an Energy Efficiency Shopping List that provided the owner with an informed decision


Suwan Bonma
May 20, 20224 min read
Daylight Simulation: Skylight Designs for Large Retail Mall
THE ISSUES We are the sustainability consultant for a new large retail mall in the new financial hub of Kuala Lumpur. The design intent...


Ir. Khim Bok Tan
Mar 24, 20222 min read
Small Industrial Premise Fit-out: Surpassing Energy Efficiency Goals
Adopting the philosophy of providing enough without oversizing, we achieved good energy reduction for the project in this case study


Bjorn Bull Hansen
Mar 21, 20225 min read
Future Climate and effects on Cooling Loads
How will a warmer climate affect the peak load (RT) and annual consumption (RTh) of a building? We are taking a look in this case study.


Bjorn Bull Hansen
Feb 28, 20224 min read
Thermal Comfort in the Workshop
Learn more about our approach and how we used measurements and energy simulations to evaluate various thermal comfort improvement strategies

Ir. Khim Bok Tan
Feb 14, 20223 min read
Troubleshooting Thermal Comfort Issues at Air Conditioned Link Bridge
Read how we helped the building owner find the cause and proposed solutions to the thermal comfort issues at an air conditioned space.
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