CIBSE Journal January 2012 www.cibsejournal.com28

BUILDING CASE STUDY EDUCATING ENGINEERS

T

ON-SITE

January 2012 CIBSE Journal 29www.cibsejournal.com

Ventilation strategy

CIBSE Journal January 2012 www.cibsejournal.com30

BUILDING CASE STUDY EDUCATING ENGINEERS

The natural ventilation strategy is helped by the exposed concrete soffits, which add thermal mass. In its basic format, the ventilation strategy is based on two rows of opening windows, one above the other. The high-level windows open and close under control of the building management system (BMS), while the lower windows can be opened manually. For the offices and laboratories on the eastern elevation the

system is controlled as follows:

As the air temperature rises above summer and winter operational settings, the BMS will progressively open the high-level windows.

In winter (from October to the end of April), if the lighting passive infrared sensor (PIR) detector indicates a room is occupied, and when CO2 levels exceed the zone set point, the BMS will open the high-level windows by 5%.

The windows will remain open unless the wind speed exceeds a pre-set level, it starts to rain or internal air temperature falls.

The occupants can override the BMS using a wall-mounted rocker switch to open or close the windows.

In addition, the occupants can also open the lower line of windows manually.

At night the windows will open to remove excess heat under a night purge strategy.

Ventilation Building management system

CJ

Heating strategy

is available online to CIBSE members for free through the Knowledge Portal. It can also be purchased in hard copy (by both members and non-members) at a discount of 75% by using the code GVFJAN. A new edition of the guide will be published in the fi rst quarter of 2012. Visit

Passive designelements:building envelope

Reactive designelements:building services

Human Factors

Interactive elements

External factors, eg, climate

First step Seco

nd St

ep

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BUILDING CASE STUDY

The CIBSE Republic of Ireland branch, chaired by Derek Mowlds and comprising an active and dedicated committee, delivers a number of additional services locally to CIBSE members in Ireland.

The committee arranges a host of interesting CPD events throughout the year in a number of locations, covering a wide range of technical and related topics in engineering and the built environment.

The branch also promotes

a philosophy of integration in design and, to that end, collaborates with other institutions on particular events, such as Green Building Week, with the Irish Green Building Council and the BIM awareness programme with CITA.

They host an annual conference in Croke Park, which attracts members nationwide, and includes speakers from the UK and further afi eld.

Recently, CIBSE Republic of Ireland collaborated with the Dublin Institute of Technology to publish the

which was formally launched on 24 November and is available for download at

For further information, visit

or email

CIBSE branch