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HEATING, VENTILATION & SERVICES
Secondly, thermal dynamic modelling is a method of building modelling that predicts the internal conditions and energy demands of a building at short time intervals using weather data and building characteristics and follows CIBSE TM59 (to an extent). ADO states a preference for passive ventilation, if possible, but once natural ventilation solutions cannot be applied, then mechanical ventilation will be required. This means a change in TM59 which no longer uses adaptive thermal comfort and the required dwelling rooms will now not exceed a fixed threshold of 26°C for more than 3% of occupied hours.
Integrated cooling solutions External considerations such as noise and solar gains can affect the selection process of trying to remove excess heat from a dwelling. If passive ventilation is not an option, then an alternative option needs to be considered; one alternative is an integrated cooling system which fits on top of a MVHR system.
An integrated cooling system will assist in removing heat from a dwelling and can further enhance a MVHR performance by pre-cooling the incoming fresh air
MVHR systems not only recover heat from extract airflow during winter but also incorporate a summer bypass to mitigate heat gains
during warmer months. By combining the benefits of improved air quality and energy efficiency, MVHR systems with cooling modules contribute significantly to creating more comfortable indoor spaces and supports ADO compliance, whilst recycling energy within a home. As an example, Titon offers a matched cooling module that is a mechanical solution to provide filtered and tempered air during periods of warm weather for user comfort, as part of an overall heat recovery ventilation system that is easy to install and control. Combined with its HRV.25 MVHR, this solution has the ability to enable a perfect combination for mitigating overheating.
James Fisher is commercial director at Titon
WWW.ARCHITECTSDATAFILE.CO.UK
ADF MARCH 2024
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