Why Schools Need Heat Recovery Ventilation Classrooms are among the most densely occupied spaces in any building. With 20 to 30 students per room and high metabolic CO2 loads, ventilation rates under ASHRAE 62.1 approach 10 to 15 litres per second per person. Without recovery, exhausting that air year-round means discarding both heating energy in […]
ERV pour salles de classe : réduire l'énergie CVC dans les écoles sans sacrifier la QAI
Cramped classrooms with 30 students can blow past 1,000 ppm CO2 within an hour of occupancy if ventilation is weak, and ASHRAE 62.1 sets a minimum outdoor-air rate that, met with simple make-up air, dumps expensive conditioned energy straight out the window in winter. An energy recovery ventilator (ERV) or heat recovery ventilator (HRV) breaks […]