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Posts Tagged ‘ventilation’

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 walls. A giant bellows was installed to force fresh air into the cells and the health of the inmates was subsequently dramatically improved. Perhaps Hales […]...

AUTHOR: Petra Vladykova Bednarova

January 26, 2017

Fire-heated floors, high ceilings to ventilation towers!

200 BC Fire-heated floors and smoky supply air Perhaps the very first steps towards present-day ventilation can be attributed to the Greeks who were the pioneers of the so-called hypocaust…...

AUTHOR: Petra Vladykova Bednarova

January 23, 2017

CO2 in homes! Measure temperature, humidity and carbon dioxide!

Many hazardous substances in our homes and in indoor air are neither smell nor give any clear symptoms. Clearly, however, that good ventilation is a very important prerequisite for the…...

AUTHOR: Petra Vladykova Bednarova

January 20, 2017

Passive house in warm climates!

The Passivhaus standard was initially developed for mid and northern European climates but the concept has been proven to work extremely well in hot climates as well. High levels of…...

AUTHOR: Petra Vladykova Bednarova

January 19, 2017

How do I know if air at home is good?

How do we know about the air we breathe is clean and healthy? To some extent, we rely on our own minds. For example, we sometimes see large particulate pollutants…...

AUTHOR: Petra Vladykova Bednarova

January 17, 2017

Common signs of polluted indoor air!

What are the common signd of polluted indoor air that you can register yourself? Skin: itching, tingling, tight tions, overheating, itching, dryness and redness Nose: unpleasant odors, irritated, stuffy and…...

AUTHOR: Petra Vladykova Bednarova

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January 16, 2017

Summer overheating and shading in passivhaus!

A central part of the Passivhaus principle is to make use of solar gains in winter to reduce the heating demand. This can mean that there is a potential for…...

AUTHOR: Petra Vladykova Bednarova

January 13, 2017

History of Ventilation Technology! Cooling and design!

Cooling in Buildings Over time, there arose an increasingly large need to cool certain buildings. The primary purpose of ventilation was, of course, to remove polluted air but it had…...

AUTHOR: Petra Vladykova Bednarova

January 12, 2017

We ventilate for health!

Design healthy buildings Occupants are usually not good sensors of air quality in buildings, therefore we must design healthy buildings. The key questions are: what are important contaminants, how do…...

AUTHOR: Petra Vladykova Bednarova

January 11, 2017

Fire, ventilation, smoky supply air and medieval churches!

200 B.C. – FIRE-HEATED FLOORS AND SMOKY SUPPLY AIR Perhaps the very first steps towards present-day ventilation can be attributed to the Greeks who were the pioneers of the so-called…...

AUTHOR: Petra Vladykova Bednarova

January 10, 2017

Ventilation system! Five steps to achieving Passivhaus on-site!

MVHR – step 5 Passivhaus buildings are dependent on their MVHR system to ensure good indoor air quality. The correct design, installation and functioning of the MVHR system mean it…...

AUTHOR: Petra Vladykova Bednarova