To determine the required cooling capacity for a specific space, you need to calculate the total heat gain, which includes internal heat gains (e.g., people, equipment, lighting) and external heat gains (e.g., solar radiation, transmission through walls and windows). You can use tools like heat gain calculations, thermal modeling, or building information modeling (BIM) to estimate the required cooling capacity. It’s essential to consider factors like occupancy, equipment density, and climate when selecting a chilled beam with the appropriate cooling capacity.