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The cooling load calculation is an essential step in the design of cooling systems in order to determine the cooling requirements of a room or building. The VDI 2078 guideline represents a recognized and proven method for carrying out the cooling load calculation. In this article we will give an overview of the most important aspects of the cooling load calculation according to the VDI 2078 guideline.

The VDI 2078 guideline specifies the principles and procedures that must be observed when calculating the cooling load. It ensures that the calculation is carried out in a uniform and comprehensible manner. The guideline takes into account various parameters such as room geometry, heat sources, climate data and room air conditions in order to determine the exact cooling requirements.

An important step in the cooling load calculation according to VDI 2078 is determining the internal loads. This takes into account heat sources such as people, lighting, electrical devices and processes. The guideline provides detailed information on how to calculate the heat output of these sources in order to enable precise cooling load determination.

Another crucial factor is the consideration of external loads. This includes heat input through the building envelope, such as solar radiation, heat losses or gains through windows and walls. The guideline contains specific calculation methods to quantify these external loads and to include them in the cooling load calculation.

The VDI 2078 guideline also specifies that the room air conditions must be taken into account when calculating the cooling load. This includes the room temperature, relative humidity and air flows. Maintaining thermal comfort plays an important role in ensuring a pleasant indoor climate.

Once all relevant loads have been determined, the actual calculation of the cooling load takes place. The guideline provides specific formulas and calculation methods to determine the cooling requirement in kilowatts (kW). This value serves as the basis for selecting and dimensioning the cooling systems, such as air conditioning systems or chillers.

It is important to note that the cooling load calculation according to VDI 2078 is a precise methodology, but it should be carried out by professionals with in-depth knowledge and experience. A correct cooling load calculation enables an efficient design of the cooling systems, resulting in optimized energy consumption and a comfortable indoor climate.

In summary, it can be said that the cooling load calculation according to the VDI 2078 guideline is an indispensable step in the planning of cooling systems. It ensures a precise determination of the cooling requirement and enables efficient dimensioning of the cooling systems. By complying with the guideline, a comfortable indoor climate can be created while energy consumption is optimized.