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]

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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

[delhite2]

No worries about it. Thanks for the benefit though.