Online educational resource on achieving indoor environmental quality with radiant based HVAC systems
Not for profit educational resource on indoor environmental quality.
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Fundamentals of indoor environmental quality / thermal comfort and air quality solutions using radiant based HVAC

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Who new?: 1500 B.C radiant floor heating in the Aleutian Islands, Alaska
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Historical figures in indoor environmental quality, Hippocrates, Vitruvius, Nightingale and Galton

Since the times of Hippocrates, Vitruvius, Nightingale and Galton, the health sciences and building sciences have studied energy and indoor environmental quality.
 

“…a rational calculation of heating and air-conditioning systems must begin with the conditions for comfort…”
Prof. P.O. Fanger

 

Do you really know what thermal comfort is?Thermal plume courtesy of Prof. Gary Settles (PSU)
Image Credit:© Dr. Gary Settles

The fundamentals of thermal comfort Using thermography to show the thermal signature of baby on a cold floor
Image Credit: ©Dr. ArthurTucker/SPL

Room thermostats vs your own thermostats
Over 160,000 thermal sensors versus a $20 thermostat...can you see the problem?
Image Credit: © Martin Dohrn / SPL
 

What makes a building comfortable?
A study in mean radiant temperature








 

Finite Element Analysis of two wall assemblies. Image credit © Bean / Posey.  Blue is the outer surfaces. Notice the cold penetrating the wood stud in the bottom image but not in the top image

 

 

 

 

 

 

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