Case Study

Soon after, complaints of over heating and mugginess were reported by the teachers and in August 2005, Manchester City Council approved the installation of the Classvent system as a trial in one of the classrooms. Temperatures and CO² levels were monitored and compared to the adjacent classroom in which the original natural ventilation system remained. Below is a graph indicating daily results.

Below is a graph indicating daily results.

Assessment of Internal CO² concentrations in Mechanical
Ventilated and Ventilated Classrooms (15-09-2005).

As illustrated on the left, the mechanical ventilation system (Classvent) holds the CO² levels below the stipulated 1500 parts per million guideline. Data taken from the naturally ventilated room was taken with the windows open and CO² levels would rise even further should the windows be closed in the winter months.

The trial of the Classvent system in Chorlton High School has been a resounding success. The Classvent units will now be installed in further schools in the area under the Manchester BSF (Building Schools for Future) Project.

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