Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Metabolic Heat Gain from Persons

Human metabolic heat gain in air conditioned rooms.

Sponsored Links

The table below indicates sensible and latent (vapor) heat from persons. The values can be used to estimate heat loads that must be handled by air conditioning systems.

Note that the values are based on older ISO and ASHRAE standards. Later ISO and ASHRAE standards should be checked for updated values.

For full table - rotate the screen!

Degree of Activity	Typical Application	Average Metabolic Rate - male adult (W)	Room Dry Bulb Temperature (^oC)
			28		27		26		24		22		20
			Heat (W)
			Sens.	Lat.	Sens.	Lat.	Sens.	Lat.	Sens.	Lat.	Sens.	Lat.	Sens.	Lat.
Seated at rest	Cinema, theater, school	100	50	50	55	45	60	40	67	33	72	28	79	21
Seated, very light work	Computer working	120	50	70	55	65	60	60	70	50	78	42	84	36
Office work	Hotel reception, cashier	130	50	80	56	74	60	70	70	60	78	52	86	44
Standing, walking slowly	Laboratory work	130	50	80	56	74	60	70	70	60	78	52	86	44
Walking, seated		150	53	97	58	92	64	86	76	74	84	66	90	60
Moderate work	Servant, hair dresser	160	55	105	60	100	68	92	80	80	90	70	98	62
Light bench work	Mechanical production	220	55	165	62	158	70	150	85	135	100	120	115	105
Moderate Dancing	Party	250	62	188	70	180	78	172	94	156	110	140	125	125
Fast walking	Mountain walking	300	80	220	88	212	96	204	110	190	130	170	145	155
Heavy work	Athletics	430	132	298	138	292	144	286	154	276	170	260	188	242

1 W = 3.41 Btu/hr

Heat Generated from Human Body

The diagram below is for moderate activity- seated, very light work - computer working person.

Human body heat - metabolism

sensible heat = convection and radiation
latent heat = evaporation

Sponsored Links

Related Topics

Physiology - Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more.
Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort.
Air Psychrometrics - Moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content.

Related Documents

Body Weight vs. Body Height - Typical ideal body weight versus height.
Discomfort Index - Comfort vs. dry bulb, wet bulb and dew point temperature.
Emissions from the Human Body - Gaseous polutants emissions from human bodies.
Great Sensible Heat Factor - GSHF - The Great Sensible Heat Factor is the ratio sensible to total heat in a cooling coil.
Heat Discomfort Zones - Maximum work load vs. temperature and relative humidity.
Heat Index - Equivalent heat index vs. air temperature and relative humidity - in degrees Fahrenheit and Celsius.
Heat Index vs. Humidity - The influence of humidity on the apparent temperature and the heat index.
Heat Loss from Electrical Equipment - Heat loss from electrical equipment like switch-gear, transformers and variable frequency drives.
Human Body - Specific Heat - Specific heat of the human body - compared to substances like protein and wood.
Human Body Composition - Composition of the human body.
Human Heat Gain - Heat gain from persons in air conditioned spaces - in btu/hr.
Humans - Required Rest Time - Relaxation rest time vs. working time and activity.
Met - Metabolic Rate - Metabiolic Rate - Met - is used as a measuring unit for human body heat or power production.
pH in Human Biological Material - pH in human materials like blood, salvia and more.
Physiology - Activity and Metabolic Rate - Heat production from the human body vs. activity.
Predicted Mean Vote Index (PMV) - PMV index predicts mean comfort response of a larger group of people.
Required Space per Person - Room area per person - may be used to calculate typical indoor climate loads.
Room Sensible Heat Factor - RSHF - Room Sensible Heat Factor - RSHF - is defined as the sensible heat load divided by the total heat load in a room
Wet Bulb Globe Temperature (WBGT) - The Wet Bulb Globe Temperature can be used to measure the general Heat-Stress index.

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate

About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Advertise in the ToolBox

If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.

Citation

This page can be cited as

Engineering ToolBox, (2004). Metabolic Heat Gain from Persons. [online] Available at: https://www.engineeringtoolbox.com/metabolic-heat-persons-d_706.html [Accessed Day Mo. Year].

Modify access date.

close

3D Engineering ToolBox - draw and model technical applications!

2D Engineering ToolBox - create and share online diagram drawing templates!

Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 30

Sponsored Links