This document discusses the physics behind outdoor cabinet thermal management, provides comparisons among passive and active cooling solutions, and offers a methodology for selecting the appropriate enclosure cooling system for your particular heat load and environmental. This document discusses the physics behind outdoor cabinet thermal management, provides comparisons among passive and active cooling solutions, and offers a methodology for selecting the appropriate enclosure cooling system for your particular heat load and environmental. Between solar radiation pounding down on cabinet surfaces, internal electronics adding their own thermal loads, and ambient temperature jumping from colder-than-anything winter to hotter-than-ever summer, the phenomena that threaten overheating are tangible—and costly. One thermal transient event. This Enclosure Thermal Calculator is a practical tool to estimate the thermal behavior of enclosures under natural convection. It lets you calculate either: The maximum power dissipation for a given surface temperature. By entering the. GL has designed climate controlled outdoor cabinets that house sophisticated electronic equipment, such as computers and servers consisting of microprocessors, fiber optic devices, Ethernet routers and switches, UPS units, and other semiconductor components. These electronic systems and components. Here is a comprehensive guide to methods and principles for maintaining optimal thermal conditions in enclosures.