Air-Conditioning Cooling/Heating Capacity

Persistence and gentle persuasion are top of the agenda.

BTU is the international standard

A BTU is the amount of heat required to increase the temperature of a pint of water (which weighs exactly 16 ounces) by one degree Fahrenheit.

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Sounds imperical to me!

actually I was taught one lbs. of water

So 16 ounces is not one pound?

It is a pound. Ounce is too obtuse: wiki::

Definitions[edit]

Historically, in different parts of the world, at different points in time, and for different applications, the ounce (or its translation) has referred to broadly similar but different standards of mass.

Currently in use[edit]

Whatever

http://en.wikipedia.org/wiki/British_thermal_unit

The point was not pound or ounces but that it is not an international standard.

http://en.wikipedia.org/wiki/Avoirdupois

Check this out to get more info on the pound ounces question.

all the calculation I've ever run are based on a gallon weighing 8.33 pounds. I've never run one based on pints or ounces

I run the pints every Friday, Saturday, Sunday and every other day following when I have a chance.

Progress is measured in kilograms but could do in ounces.

"A pint of water's a pound and a quarter."

I would use both for a long time, until everybody knows both....then perhaps phase-out can begin....

12 000 BTU/h = 1 tonelada de refrigeración = 3000 frigorías/h.

Usually governments insist to use SI units in all their standards. Practically still many use FPS system of units. If you are familiar with the conversion factors it will be easy to understand. You can pursue government bodies through academics or scientific association to make a rule to use SI units in all measurements.

The problem is one of nomenclature definitions.An once can be defined in either of weight or volume, but not the same. One once in weight is equal to 1/16 of a pound,i.e.,One pound =16 onces. However, One once in volume is equal to 1/124 of one gallon,i.,e. One gallon =4 quarts=8 pints=124 onces.

When working with physics, one generally equates weight with mass, however, mass is the same regardless of the location anywhere in the universe. But weight may change , dependent upon the location relative to another mass, i.e., An object is approximately 1/6 the weight on the moon's surface compared to it's weight on the earth on the equator.....But the mass is the same. All objects attract each other, regardless of their mass and dependent upon their mass and distance apart. Attraction is inverse, relative to the square root of the distance . This holds true even at the atomic level.

Also, volume may change dependent on it's physical property, i.e. a gas ?, a solid?, it's temperature?