Physiology

Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more

Ammonia - NH₃ - Concentration in Air and Health Symptoms

Ammonia and health symptoms - smell and threat to life

Area per Person

Normal area per person in some common buildings - the values can be used to calculate indoor climate loads

Carbon Dioxide Comfort Levels

CO2 acceptance and comfort levels

Carbon Dioxide Concentration in Rooms

The carbon dioxide concentration in rooms may be used to indicate the air quality and the efficiency of the ventilation system

Carbon Dioxide Emission from People

The Carbon Dioxide emission from persons depends on their activity.

Clo - Clothing and Thermal Insulation

Clo is used to measure the thermal insulation of clothes

Clothing, Activity and Human Metabolism

Human metabolism at low and high activity with different levels of clothing

Effects of Low-Frequency Noise and Vibration on People

Physiological effects of low-frequency noise and vibration

Health Effects of Carbon Monoxide

Exposure health effects of Carbon Monoxide - CO

Heat Index

Equivalent heat index temperatures at various temperatures and corresponding relative humidity - in degrees Fahrenheit and Celsius

Human need of Air

Man need fresh air for respiration and for transport of heat and vapor emitted from the human body

Illuminance - Recommended Light Levels

Recommended light levels - illuminance - for some common types of working activities

Legionella

Legionella pneumophila - bacterium that thrives in water supply and air conditioning systems - causing Legionnairs disease

Met - Metabolic Rate

The Met is often used as a measuring unit of human heat production

People and Heat Gain

Approximate Heat Gain from Occupants in Air Conditioned Spaces - in btu/hr

Persons and Metabolic Heat Gain

Approximate metabolic heat gain from occupants in air conditioned spaces at different degrees of activities - in watts

Physiology - Activity and Metabolic Rate

Heat production from the human body at some common activities

Recommended Relative Humidity

Recommended relative humidity level

Relative Humidity and Health

Bacteria, viruses, fungi, mites, asthma and range of relative humidity

Sound Power, Intensity and Pressure

An introduction to decibel, sound power, sound intensity and sound pressure

Sound Pressure - Recommended Levels in Rooms

Maximum recommended sound pressure levels in rooms with activities as kindergartens, auditoriums, libraries, cinemas and ...

Wind Chill Index

The cooling or "chilled" temperature of air in movement - the wind chill index

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