Low energy heat recovery & fresh air for classrooms

Good air quality in classrooms is good for academic performance as well as the safety of occupants.

Recent events have focused even more attention on indoor air quality and while some new technologies have emerged, the fundamental approach of bringing more fresh air into buildings is still the most effective way to improve indoor air quality. Improved monitoring and better controls have provided more opportunities to optimise energy efficiency while providing better indoor air quality.

Fan Convectors with fresh Air introduction – Dunham-Bush offer a range of products from Series AM fan convectors equipped with fresh air dampers and CO2 controls to networks of fan convectors with additional features.

The Smart-Vector range of fresh air fan convectors offer further innovative options to the client, ensuring recommended indoor air qualities (IAQ) are achieved. Smart-Vector’s provide demand-led tempered fresh air and heating using a stand-alone controller with local setpoint adjustment. Multiple heaters can be operated in master / slave configuration to ensure effective control in larger spaces.

There are five models in the Smart-Vector range: floor standing front outlet models SV19 and SV22; top outlet model SV88; high wall model SV53; ceiling mounted SV80. With nominal outputs ranging from 1.4kW to 14.6kW, comfortable conditions in the space can be maintained. All units incorporate variable air volume (VAV) control function, to maintain design conditions.

Improved Indoor air Quality with Heat Recovery – The next step in the improvement of indoor air quality for schools can include heat recovery, not heat recovery by mixing fresh air with room air and exhausting a mixture of both but the use of a high efficiency metal heat exchanger, a design which ensures excellent specific fan power and very low noise in a compact unit.

The Classmaster heat recovery ventilation unit has been developed specifically for classrooms and along with all the VHR range of units now available from Dunham-Bush, fully complies with the latest BB101 and BB93 guidelines. With airflows ranging from 50 to 600l/s, Classmaster delivers the very highest standards of air quality.

Key features include a patented variable air mass flow heat exchanger, which maintains thermal efficiency at both 100% and 50% airflow. The unique configuration of low resistance heat exchangers, used in conjunction with EC fans, delivers minimal sound levels and excellent heat reclaim efficiency while monitoring and controlling levels of CO₂ in the space.

Classmaster units have the option of ePM2.5 (F7) filters for inner city installations. With a height of only 300mm, Classmaster 260 can be installed within a ceiling void or surface mounted. Space heating coils and frost coils are also available for the Classmaster range.

www.dunham-bush.co.uk