Posts Tagged ‘ventilation’

March 7, 2017

History of Ventilation: CO2 indicator and hygiene in high rooms!

1858: Carbon dioxide as an indicator of indoor pollution The German scientist Max von Pettenkofer started to show interest in the ‘air toxins’ that caused smells in overcrowded rooms. He did not know what sort of poisons they were, how dangerous they might be or how they could be measured but he was satisfied that […]...

AUTHOR: Petra Vladykova Bednarova

February 27, 2017

The first large-scale mechanical ventilation in history!

1854: The first large-scale mechanical ventilation system in the world A few years after the ventilation fiasco in the new, permanent parliamentary buildings, Reid moved to the USA. However, before…...

AUTHOR: Petra Vladykova Bednarova

February 23, 2017

AIR: need, health, energy and environment!

Need for fresh air Our need for fresh air, essential to our functioning as human beings, is not normally contested by anyone. This is because we have basic physiological needs…...

AUTHOR: Petra Vladykova Bednarova

February 20, 2017

The History of Ventilation: Poor ventilation in Parliament!

1852: Poor ventilation in the Houses of Parliament despite major investments Following the encouraging experiences gained from the temporary building for the House of Commons, the next aim was to…...

AUTHOR: Petra Vladykova Bednarova

February 15, 2017

Windows and additional insulation in our homes!

Windows in our homes Modern windows are relatively well insulated and they have normally three sheets of glass but also four glazed windows are readily available (they are especially used…...

AUTHOR: Petra Vladykova Bednarova

February 13, 2017

History of Ventilation Technology: Houses of Parliament in London

1835: Purified supply air heated in winter and cooled in summer in the Houses of Parliament This innovation is given a more thorough account than others, as it embraces such…...

AUTHOR: Petra Vladykova Bednarova

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February 8, 2017

History of Ventilation Technology: Heated air in winter and cool air in summer!

1810: Heated supply air in winter and cool supply air in summer In the then hyper-modern William Strutt Infirmary (later Derbyshire General Infirmary, now London Road Community Hospital) in England,…...

AUTHOR: Petra Vladykova Bednarova

February 6, 2017

How to control air in the room with VOCs!

How to control that your air in a room is clean? The VOCs sensor measures the content of emissions/impurities in % VOC. When an occupant emits CO2, this creates a…...

AUTHOR: Petra Vladykova Bednarova

February 3, 2017

Why do we warm up the house?

Heat balance and indoor air quality Heat balance means that when all the “free heat” given off by people, appliances and solar radiation is not enough to provide comfortable indoor…...

AUTHOR: Petra Vladykova Bednarova

February 1, 2017

VOCs: Emission sources and ventilation!

How clean is the air that we breathe? Most people spend more than 20 hours a day indoors. During this time, an average person drinks around 3 l of water…...

AUTHOR: Petra Vladykova Bednarova

January 31, 2017

History of Ventilation Technology: In prison and hospitals!

1752: Giant bellows fan ventilates a prison The governors of Newgate Prison in London were persuaded by the English scientist Stephen Hales to open up ventilation holes in the cell…...

AUTHOR: Petra Vladykova Bednarova