Institution of Mechanical Engineers IMechE

Natural Ventilation - a zero carbon method of cooling and ventilation

14 June 2012

As pressure grows to reduce energy use and carbon emissions, the use of 'fresh' outside air for cooling and ventilation offers a relatively simple, proven and cost effective solution based on natural ventilation.

Natural Ventilation is liked by occupants and also perceived to be healthier and more comfortable than many engineered systems. The WHO published a guide to reduced infection control in Hospitals in 2010 advocating natural ventilation as the most reliable route to reduce infection rates in many healthcare applications. Sustainability rating systems such as BREEAM recommend it as the best solution to air quality and minimal environmental impact.

And yet there are clearly times and applications where Mechanical systems have advantages and should be used.

Between these two extremes there are times when modern natural ventilation systems offer the best of both worlds when ‘hybrid ‘designs use natural ventilation as and when best and mechanical systems to supplement air movement, cooling and humidity control when necessary. Such systems are seen to be very cost effective and resilient to future climate change as they can use an ambient energy source for much of the time, introducing energy using systems at the extremes when natural ventilation alone would struggle, so that occupants can have the indoor climate control they seek.

This webinar continues from the basic webinar on natural ventilation run in 2011 to look at the application of natural ventilation in modern buildings where demands for better air quality, comfort and productivity must be accommodated using progressively lower carbon use. The target in the UK Building Regulations toward zero carbon by 2016 (domestic) and 2019 (all other buildings) means that such systems must be considered as they are based on reliable proven technologies albeit with the added benefit of modern control and monitoring features.

The webinar will cover natural ventilation design principles and look at various design options which could be used for non domestic buildings. The design tools need to develop a successful solution will be described and examples shown of their use.

Speaker: Frank Mills BSc, CEng FCIBSE, MASHRAE, MIMechE, Technical Director, Sinclair Knight Merz (SKM)

Frank Mills has designed many successful naturally ventilated buildings in the UK and abroad. He presents the Natural Ventilation short course at the ASHRAE ALI and also presents at conferences on this subject. He has worked with design teams and contractors to develop, innovative design solutions which are now installed and successful. He continues to seek innovative solutions and to explore further options for lower carbon through use of natural ventilation strategies. Frank is a current member and past chair of the Construction and Building Services Division.

Clips:

Natural Ventilation - a zero carbon method of cooling and ventilation

: Speaker: Frank Mills BSc, CEng FCIBSE, MASHRAE, MIMechE, Technical Director, Sinclair Knight Merz (SKM)

Duration: 50mins