Cooling of interior areas: when choosing an air conditioner, firstly it is important to pay attention to its cooling capacity (power). In turn, the power of the needed air conditioner directly depends on the size of the refrigerated areas (width, length and height), their purpose, location (north or south), window area, number of people, availability of ventilation system, etc.

Units of power
We also meet the other units of measure except daily using other units of measure . For example, in Britain, the unit of heat is BTU/hour. BTU/hour is the unit of heat needed to heat 1 pound of water per 1 degree Fahrenheit.

Sİ system (International System of Quantities, ISQ) attitude to BTU/hour:
  • 1Wt= 3,412 BTU/hour or
  • 1000 BTU/hour = 293 Wt

How is the power of the air conditioner measured?
Power, this is the main factor in the characteristics of each air conditioner (cooling power). The power of Q (kilowatt) is roughly calculated using the method below:

Q = Q1 + Q2 + Q3

Q1 — Heat coming from the ceiling, walls, windows, floor
Q1 = S * h * q / 1000, here
S — area of the rooms (m2);
h — Room height (m2);
q — the coefficient 30-40 Vt/kv.m. is equal to:
q = 30 for dark or poorly lit rooms;
q = 35 for rooms with medium light;
q = 40 for rooms with high sunlight. If sunlight directly enters the room, there should be blinds or curtains of light colors on the windows.

Q2 — Heat coming from a person.
0,1 kwt— In a calm state;
0,13 kwt — With a little movement;
0,2 kwt — In physical activity;

Q3 — Heat coming from household appliances
0,3 kVt — From the computer;
0,2 kwt — From the TV. For other devices, it is considered that the heat coming from them is equal to 30% of the maximum power consumption.

It should be noted that this technique can only be applied to relatively small areas (apartments, separate rooms, markets). Another technique that has more parameters is used for administrative buildings, large retail and industrial facilities,.

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