| 摘要 |
<p>A temperature-controllable equipment enclosure (110) comprising: an air inlet (113) having an inlet fan (228) arranged to supply air into the enclosure from an external environment through the air inlet to provide a positive air pressure within the enclosure when enabled; an air outlet (150); a conduit (125) extending between the outlet and an equipment cabinet (121 ) within the internal volume (115) of the enclosure; and an exhaust fan (127) arranged to drive air through the cabinet and conduit towards the outlet, wherein the conduit comprises an air bypass (240) connecting the internal volume of the enclosure with the interior of the conduit, such that air driven by the exhaust fan through the conduit is recirculated within the internal volume of the enclosure when the inlet fan is disabled and is exhausted from the enclosure through the air outlet when the air inlet fan is enabled.</p> |
