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Posts Tagged ‘CO2’

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

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

June 2, 2015

CIBSE guidence on acceptable CO2 levels!

The levels of CO2 can tell us how good is the indoor air quality. CIBSE (www.cibse.org) has set some guidance levels for acceptable CO2 levels. Fresh: 600 ppm A little…...

AUTHOR: Petra Vladykova Bednarova

September 16, 2014

Pollution of outdoor air!

The comfortable indoor can be achieved via mechanical ventilation which takes the outdoor air to supply the air indoors at the comfortable level of temperature, relative humidity and acceptable levels…...

AUTHOR: Petra Vladykova Bednarova

August 20, 2014

History of ventilation! Part 1: What is the minimum ventilation rate?

The ventilation is not only about the ventilation system but also about the amount of the air for ventilating and created good thermal comfort. Read here about finding the suitable…...

AUTHOR: Petra Vladykova Bednarova

July 8, 2014

CO2 and VOC sensors in demand controlled ventilation (DCV) system

Background information on CO2 and VOC The lethal level of CO2 is 100,000 ppm (10%). The CO2 level of 25,000 ppm (2.5%) can cause a severe headache. And maximum control…...

AUTHOR: Petra Vladykova Bednarova

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July 1, 2014

SAA seminars in Germany: A complete story of ventilation!

Swegon Air Academy seminars in May 20-22 in Nürnberg, Stuttgart and Münich have attracted architects, engineers and many people dealing with new and renovated residential buildings. Our speakers have drawn…...

AUTHOR: Petra Vladykova Bednarova

June 16, 2014

First SAA webinar was a success!

Swegon Air Academy opens a new way of sharing the knowledge by using a webinar format (webinarium or webb-seminarium in Swedish). And this very webinar had its own twist where…...

AUTHOR: Petra Vladykova Bednarova

January 15, 2013

Swegon Air Academy in Tallinn on renovation of multi-residential buildings – Part 3: We only get ONE chance to do this right!

This article is a final part of three articles about Swedish experiences with renovation of multi-residential buildings and the application of the right measures at the right time. Åsa Wahlström…...

AUTHOR: Petra Vladykova Bednarova

December 6, 2012

Swegon Air Academy in Tallinn on renovation of multi-residential buildings – Part 2: The right application of renovation measures is the key!

Application of renovation measures lower the lifecycle costs in time and the most beneficial investments are seen as a package of measures. Adding more measures will increase costs and therefore the…...

AUTHOR: Petra Vladykova Bednarova

December 4, 2012

Swegon Air Academy in Tallinn on renovation of multi-residential buildings – Part 1: Unused carbon quota goes to energy efficiency improvements in buildings in Estonia!

Swegon Air Academy seminar took the place on November 22 in Tallinn, Estonia. And it was all about renovation possibilities in multi-residential buildings. Åsa Wahlström shared her experiences with Swedish…...

AUTHOR: Petra Vladykova Bednarova