Watts to BTU calculation 1

[malz]

Looking for the calculation which converts watts per sqare foot, to BTU then to refrigeration tonnage. Any help would appreciated.

 

[deanp]

1 watt per square foot is approximately 3.14 btu per square foot

 

[malz]

Thanks!!

 

[rintin]

please note that conversation factor is 3.44 (not 3.14)

 

Isn't 3.413 Unless my Teachers are wrong... Which is entirely possible.

 

[Geof]

A very good conversion program that is free to use and distribute:

http://www.joshmadison.com/software/

lists the coversion as 1 watt-hour = 3.412142 BTU.

 

[svanels]

Gentlemen you are forgetting the basics here !!!

You can not convert watts/ft[sup]2[/sup] to BTU because you can't compare power/area with energy Steven van Els
SAvanEls@cq-link.sr

 

In the UK we have gone through this conversion thing already, so here is typical conversions used

Power

kW -> BTU/hr(x 3412)
Tons Refrigeration -> kW (x 3.517)

Intensity of heat flow rate

BTU/hr square foot -> W/square metre (x 3.155)

Typically for budget cooling load estimating we use 140 W/square metre.