This article will try to start from the perspective of cooling capacity calculation for outdoor telecom cabinet, focusing on issues that are easily overlooked during actual deployment, so as to help operator customers better understand How to Calculate Cooling . . This article will try to start from the perspective of cooling capacity calculation for outdoor telecom cabinet, focusing on issues that are easily overlooked during actual deployment, so as to help operator customers better understand How to Calculate Cooling . . Proper cooling calculations stop telecom cabinets from overheating and protect equipment. The cooling formula uses internal heat, external heat, and a safety margin for surprises. Internal heat is found by checking how much power devices use over time. External heat depends on things like outside. . They calculate the heat transfer based on the difference between the outside air (e. However, this approach ignores a massive, invisible energy source: The Sun. Solar radiation can bombard an outdoor cabinet with up to 1120 Watts per. . This article discusses the principles for selecting the cooling capacity of cabinet air conditioners and provides related calculation methods. The heat provided due to the. .