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Archive for the ‘News’ Category

September 24, 2021

Air in schools!

Decades of research in air quality and ventilation in schools! Several thousand years ago, the first so-called schools were founded, and the school education of people started. Today, education can take up to ¼ of human life, and most of the time is spent indoors – in school buildings. Environment – inside (indoor) and around […]...

AUTHOR: Petra Vladykova Bednarova

August 30, 2021

Swimming pool in passive house!

Energy efficiency for all energy loads! The concept for building a passive house swimming pool focuses on the high-quality building envelope with reduced risk of condensation (insulated, airtight, good window…...

AUTHOR: Petra Vladykova Bednarova

August 18, 2021


All mighty equation! The equation is about indoor environmental quality (IEQ) composing from indoor air quality (IAQ), indoor thermal quality (ITQ – also known as thermal comfort), indoor lighting quality…...

AUTHOR: Petra Vladykova Bednarova

July 29, 2021

Indoor thermal quality also known as thermal comfort!

How to measure indoor climate? In the previous post “How to measure indoor climate? IAQ in focus!” (link here) we talked about indoor environmental quality (IEQ) composing from indoor air…...

AUTHOR: Petra Vladykova Bednarova

July 23, 2021

How to measure indoor climate? IAQ in focus!

What is IEQ? Indoor environmental quality (IEQ) refers to the environmental conditions inside regularly occupied space and it is determined by many factors, including indoor air quality (IAQ), indoor thermal…...

AUTHOR: Petra Vladykova Bednarova

June 23, 2021

Transitioning from IAQ to IEQ!

In short! With an extreme focus and rapid development in recent decades (in research, industries and all types of buildings), indoor air quality (IAQ) is often misused as a substitute…...

AUTHOR: Petra Vladykova Bednarova

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May 21, 2021

Can only 12 parameters evaluate the IEQ in buildings?

What are IEQ and TAIL? The indoor environmental quality (IEQ) is a general indicator of the quality of conditions inside a building. IEQ can be defined and determined by various…...

AUTHOR: Petra Vladykova Bednarova

April 27, 2021

Ventilation is a mediating factor, not a cause!

Ventilation in buildings! Ventilation is an important component of any building, even if achieved by opening windows (adventitious ventilation) or infiltration (unintentional ventilation). It is without a doubt recognized as…...

AUTHOR: Petra Vladykova Bednarova

March 25, 2021

Ventilation: How buildings breathe?

Buildings, as humans, need to breathe! Like the lungs, buildings need to be able to breathe to make sure that fresh air comes in and dirty air goes out. There…...

AUTHOR: Petra Vladykova Bednarova

February 26, 2021

Relative humidity as the main signal for comfort indoors!

Requirements for relative humidity! Humidity definition dates back to the 1300s and is widely proved to be one of the important factors in buildings. Together with temperature, relative humidity is…...

AUTHOR: Petra Vladykova Bednarova

January 29, 2021

What is the human daily intake of air, water and food?

Human daily intake of food, water and air! Jan Vilhelm Bakke in the AIR Swegon Air Academy book (published in 2008) stated: “On average, an adult male with a sedentary…...

AUTHOR: Petra Vladykova Bednarova