Calculate cooling air conditioning (cooling per m2)

one fridge is the unit of capacity used to measure the absorption of thermal energy in an enclosure. We talk about a negative kilocalorie, which means that it suggests the number of kilocalories that the system has the capacity to absorb in one hour.

In the calculation of the cooling required by an electronic air conditioning device to absorb heat from an enclosure several elements are involved such as the climatic region of the home, number of windows it has, its orientation, insulation, etc. for this reason, in this article we have made, we will show a very indicative and approximate calculation of the capacity in refrigerators.

Let’s remember that to make a precise dimensioning of an air conditioning installation, is a requirement request a professional and accredited installer let him do the calculation knowing the causes which we discussed earlier.

The result of this calculation will not be the same if we are in the Northern climate region (wetter and colder) than in the Southern region (drier and hotter). Thus, an air conditioner will require a larger capacity in a building without precise insulation or with huge windows that receive direct sunlight.

If we do not make this calculation correctly, we have the possibility of getting a set that is quite strong with which we will waste energy or, on the contrary, we will buy a set with not enough capacity so that we also waste energy by putting it at maximum agility and we may not reach the desired temperature.

if you wish calculate the electrical capacity of the air conditioner that you need knowing the causes as we have already explained how the conductivity of all surfaces, the climate region and distinguishes it from temperature, ventilation losses, etc., in this article we show you the formula to calculate it.

Indicative calculation of refrigerators per square meter m2

In the usual custom, it is used as the basis of the calculation of frigories about 100 frigories per square meter.

An enclosure of 40 m2 would need an electronic of 4,000 refrigerators. For a space of 50 m2, we will need a system of 5,000 fridges and so on.

These calculations are based on indicative suggestions given that to achieve more accuracy we must always consult a professional to analyze the premises and make a more accurate calculation using formulas and particular calculation programs.

If the enclosure has a huge heat load by having a huge glass area or by having a dark exterior wall that absorbs more radiation or the enclosure is in a hot region, etc., it is suggested to increase the calculation base from 100 to 130 fridges per square meter.

Calculate cooling per cubic meters m3

A good option to calculate the air conditioning units we require is multiply the cubic meters of the stay by 50.

To understand how many cubic meters a room has we must multiply the m2 by its height. For example: a room of 20 m2 by a height of about 2.5 m2 will result in a stay of 50 m3.

To understand the refrigerators we require in this room: 50 m3 X 50 = 2,500 refrigerators

And what capacity in Kw do I need?

Knowing that a refrigerator is equivalent to 1.163 w, we have the possibility to make a simple mathematical calculation, we will multiply the number of refrigerators we obtained by the previous formula. According to our example, 2,500 fridges = 2,907 w = 2.9 Kw

In the following table we show some indicative data of the cooling capacity in Kw that we will need to cool according to the m2 of the stay or premises.

Calculation of refrigerators per square meter

In the case of very sunny rooms or attics, the values ​​must be increased by 15%.

If there are heat sources (such as, among other things, the kitchen) it is necessary to increase the capacity to 1 Kw.

Remember that these calculations are very approximate and do not include notable values ​​such as isolation or climate region. For a real calculation and sizing, always find out with an accredited air conditioner installer.

Calculation of watts in refrigerators

To make the transformation from watts to frigories, we must multiply the total capacity watts by 0.86.

For example: example 1,000 watts/hour = 860 frigories/hour.