Exactly as it sounds, natural ventilation utilizes forces of nature like wind and temperature to supply and remove air from a space. Buoyancy-driven is a type of natural ventilation that relies on differences in temperature and air density within the shelter to push warm air up and out through a higher level vent. Wind driven natural ventilation uses natural breezes to encourage air circulation. Windows, vents, doors, and turbines are all options available from Shelter Works that aid these processes. When positioned correctly and used in conjunction with one another they create a natural cross flow of air causing the air to circulate.
Mechanical ventilation is a more reliable way to ventilate a shelter when you need consistent results. It uses fans, air conditioners and heaters to force the air to circulate, remove moisture and regulate interior temperature. Mechanical ventilation does have a higher initial cost as well as the higher operating and maintenance costs associated with the equipment. In most cases, a mixed mode balance of both natural and mechanical ventilation can achieve the desired results you need when protecting your critical field equipment.