Whirlpool 1.5 ton ac so powerful?

[delhite2]

My first post.
I recently purchased a whirlpool 1.5 ton ac SAI18B59MC0. I read about it on a web selling site and saw that it has maximum cooling capacity better than of all other 1.5 ton AC. It works wonderful and better than my O General 1.5 Ton AC.
My question is, this cooling capacity makes it literally a 1.8 ton AC, so how actually manufacturers decide the tonnage? Basis the cooling capacity (i thought) or some other means?
TIA

[delhite2]

Anyone with some insights? This is actually a bit confusing to me.

[Rob White]

.

It's a calculation to do with heat capacity and efficiency.

We use Kilo Watts now in Europe, Great Britain is still in the Continent of Europe. :)

It is to do with power in to power out. A ratio. Power and heat can be measured and because
heat is a form of energy it can be calculated and converted to power.

How to convert BTU/hr to tons
One refrigeration ton is equal to 12000 BTUs per hour:

1 RT = 12000 BTU/hr

One BTU per hour is equal to 8.33333×10-5 refrigeration ton:

1 BTU/hr = 8.33333×10-5 RT

So the power P in refrigeration tons (RT) is equal to the power P in BTUs per hour (BTU/hr) divided by 12000:

P(RT) = P(BTU/hr) / 12000

It's all about efficiency. In the UK we are big on fuel efficiency in cars. If I have a car that does 10 miles to the litre (mpl) or 50 mile per gallon (mpg) then that is more efficient than a car that doe 8 mpl or 40 mpg.

It's the same as AC power in and cooling out and is all in the maths.
If you have a very efficient eclectic motor in your system it won't use as much power so you get a better efficiency ratio.

How to convert BTU/hr to kW
1 BTU/hr = 0.00029307107 kW

So the power conversion of BTUIT/hr to kW is given by the formula:

P(kW) = P(BTU/hr) / 3412.142

Example
Convert 20000 BTU/hr to kilowatts:

P(kW) = 20000 BTU/hr / 3412.142 = 5.861kW

Hope that helps.

Rob.

.

[delhite2]

.

It's a calculation to do with heat capacity and efficiency.

We use Kilo Watts now in Europe, Great Britain is still in the Continent of Europe. :)

It is to do with power in to power out. A ratio. Power and heat can be measured and because
heat is a form of energy it can be calculated and converted to power.

How to convert BTU/hr to tons
One refrigeration ton is equal to 12000 BTUs per hour:

1 RT = 12000 BTU/hr

One BTU per hour is equal to 8.33333×10-5 refrigeration ton:

1 BTU/hr = 8.33333×10-5 RT

So the power P in refrigeration tons (RT) is equal to the power P in BTUs per hour (BTU/hr) divided by 12000:

P(RT) = P(BTU/hr) / 12000

It's all about efficiency. In the UK we are big on fuel efficiency in cars. If I have a car that does 10 miles to the litre (mpl) or 50 mile per gallon (mpg) then that is more efficient than a car that doe 8 mpl or 40 mpg.

It's the same as AC power in and cooling out and is all in the maths.
If you have a very efficient eclectic motor in your system it won't use as much power so you get a better efficiency ratio.

How to convert BTU/hr to kW
1 BTU/hr = 0.00029307107 kW

So the power conversion of BTUIT/hr to kW is given by the formula:

P(kW) = P(BTU/hr) / 3412.142

Example
Convert 20000 BTU/hr to kilowatts:

P(kW) = 20000 BTU/hr / 3412.142 = 5.861kW

Hope that helps.

Rob.

.
Thanks now it's makes some sense... I was so confused before why the web site shows all 1.5 Ton as having different BTU and cooling power.

[Rob White]

.

I'm going to give you the benefit of the doubt but this thread might be the best I've seen that suckered me into looking at a website selling things.

Rob

.

[frank]

.

I'm going to give you the benefit of the doubt but this thread might be the best I've seen that suckered me into looking at a website selling things.

Rob

.

I've removed the links for you Rob now that his question has been answered :D

[delhite2]

No worries about it. Thanks for the benefit though.