ENG DESIGNBUILDING SERVICES CONSULTANTS

HOUSING PROJECT

PROJECT:

DEE PARK

LOCATION:
Reading
CLIENT
CATALYST HOUSING GROUP
DEVELOPER:
THE DEE PARK PARTNERSHIP LLP
MAIN CONTRACTOR:
WILLMOTT DIXON HOUSING LIMITED
ARCHITECT:
HTA
COST:
£9,000,000
Computer generated image of the modelled building

Computer generated model of the building

Sunpipe in a corridor modelled

Modelling a sunpipe in a corridor

Dee Park Extra Care Home

Dee Park, site 6A is a 60-unit "extra care" home for the elderly, which is part of a large regeneration development. As well as the residential units, there are on-site communal facilities, such as a large dining room, commercial kitchen and a hairdressing salon.

Overheating Assessment

To assess possible overheating during the summer months, a 3D model of the building was constructed using dynamic simulation software. The model was rendered in detail, and thorough calculations were performed to analyse internal temperatures arising through various heat gains, looking throughout the year, at hourly intervals. All bedroom and living room temperatures were assessed against criteria put forward by CIBSE. Internal corridors were also assessed, but without specific criteria, the aim being to keep the temperatures as low as possible using only natural ventilation.

Mitigating Overheating

The level of detail in the model allowed the possibility of introducing various methods of minimising temperatures within the key areas of the building. Restricted levels of window opening could be accurately reflected and applied to the living rooms and bedrooms. Within the corridors, which contain the bulk of the heating and hot water pipework, high specification insulation was considered to reduce the heat emitted. Efficient lighting with minimal heat output was also important within these spaces. The model also allowed for a thorough airflow analysis, which considered the effects of adjoining corridor doors being held open, as well as the innovative manual override of the AOVs to introduce a "stack effect" within the central corridor spaces.

Final Scheme

As well as for the thermal assessment, the model was important in establishing a BREEAM "Excellent" rating. In addition, the rating was achieved by utilising ultra-low NOx boilers and water generators, low water consumption sanitary appliances and photovoltaic panels on the roof.

The scheme, now known as "Oak Tree House", was officially opened by HRH the Duke of Kent

EngDesign Ltd, 106-108 Bermondsey Street, London SE1 3TX +44 (0)20 7357 7223 office@engdesign.co.uk