In the previous articles you could read about ventilation rates, evolvement of ventilation system throughout the centuries and ventilation systems in residential buildings, and here you can read more about ventilation in non-domestic buildings with focus on system in Sweden.
The non-residential buildings were using fire places to heat up and ventilated. In 1860s the iron / tile stoves were invented where the air intake was taken in through the insulated pipe and let at the bottom of the stove were it was heated and let in the room out of the top of stove. The room’s exhaust air vent, located near the floor, was connected to a flue that ran next to the smoke flue. In this way, the exhaust air flue was heated for efficient airflow.
Calorifère systems were used between 1800s up to 1910s where the air was taken in the building through a heat chamber in the basement and then forwarded to the different floors and rooms. After 1920s the hydronic radiator system became a standard solution with intake air via flap vents in external façade and exhaust air via flues with the help of stack effect. In 1930s to 1960s the low pressure system and early supply and exhaust system were used with separate intake and exhaust air ducts in a false ceiling in offices and schools. After 1975 the heating by air became more common with fan coils and climate beams, followed with variable air volume (VAV) system in early 2000s.
Source: Ventilation in historic buildings by National Property Board Sweden, www.sfv.se