Gilberts revives natural ventilation for NHM

Published:  05 September, 2017

Gilberts, natural ventilation, grilles, louvres

While the famous ‘Dippy’ the diplodocus dinosaur exhibit in the Hintze Hall of the Natural History Museum in London was being replaced with a real skeleton of a blue whale, the opportunity was taken to revive, as far as possible, the original ventilation for this iconic, lofty hall. The project in the 150-year-old Grade I listed hall saw consulting engineers SVM utilising the experience of air-movement specialist Gilberts.

With the help of CFD (computational fluid dynamics) modelling, Gilberts produced 24 bespoke units of its Mistrale Model A natural-ventilation units, with a further 42 standard WHF50 high-performance louvres to provide the required levels of fresh and exhaust air.

Each bespoke unit was purpose-designed using a combination of Gilberts’ WHF50 cassette with the VN75 ultra-low-leakage air-volume control damper to fit within existing window apertures and frames, and bolt together into specially designed subframes to avoid any need to fix into the existing terracotta surrounds.

These units were required to provide the appropriate flow of fresh air into the hall without allowing any daylight to pass through and still look aesthetically pleasing. A bespoke combination of Internal K40 fixed-bar grilles and non-vision cores mounted on the rear of the units provided the solution.

In a separate high-level atrium, the glazing was removed from the window frames and replaced with WHF50 louvres to provide high-level discharge of exhaust air.

SVM director Paul Rushmer elaborated, ‘The project involved refurbishing the existing hall and redesigning the space to incorporate additional galleries at ground, first and second floor levels. From the original design, natural-ventilation openings were in place, to an extent, but needed restoring, and new building services had to be integrated alongside to deliver a balanced internal temperature all year round, regardless of summer peaks and winter lows.

‘Conditions in Hintze Hall are crucial to the exhibits, and of course important to the visitors. We had to find a non-invasive solution for the historic space, which stabilised the temperature and humidity. The original building drawings used passive solutions. We have past experience of working with Gilberts, and felt its dampers were particularly appropriate to helping develop a bespoke, sympathetic solution.’

For more information on this story, click here: Sept 2017, 121

comments powered by Disqus

Search

Welcome

Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.
November 2017: DIGITAL EDITION
ARCHIVE OF DIGITAL EDITIONS

Modern Building services has a group
on Linkedin - join us!

Show

Jobs

  • Intermediate / Senior Mechanical Engineer

    The Mechanical team undertake the design and specification of a range of Mechanical building services in a lead or supporting role, depending on project complexity and scale. You should demonstrate a flexible approach to design and team working and wil......

  • Senior Urban Designer

     Applicants will be Master’s Degree qualified Architects / Urban Designers, with a strong portfolio of work highlighting a variety of projects at a range of scales and types, with strong focus on regeneration, infrastructure-led projects and major develo......

  • Principal Structural Engineer

    We are currently recruiting on behalf of a global client, with a diverse range of award winning projects to their name. Their experience spans a host of market sectors, including transport, infrastructure, defence, scientific, education, high-tech and ......

more jobs »

Poll

"Is the Building Services industry lagging behind in the implementation of BIM?"