An air filter (111) comprising a duct (118, 120) forming a passageway extending between an inlet (116) and an outlet (113) of the air filter, the duct comprising bristles (310) extending from a wall of the duct across at least a portion of the passageway so as to remov entrained particles from air passing through th...

An equipment cabinet (100) having an air cooling system comprising: an air inlet (101) extending across an outer wall (102) of the cabinet; an air inlet filter (103) disposed between opposing first and second side panels (104, 105) forming the outer wall of the cabinet; and a fan (106) arranged to draw air through t...

An air filter unit (20) configured for attachment to an external wall of an enclosure, the air filter unit comprising an inlet (21 ) at a base of the unit; a filter (23) formed by a passageway extending from the inlet and lined with bristles extending across the passageway along at least a portion of the passageway ...

A temperature-controllable equipment cabinet comprising a diffusion-absorption refrigeration cycle system (5), an evaporator pipe (4) of the refrigeration system extending trough a wall (9) of the cabinet and passing trough a sealed enclosure (3) for containing a heat transfer liquid (12), the sealed enclosure exten...

A diffusion-absorption refrigerator system (1) comprising a condenser pipe (6) passing through and surrounded by a heatsink (2), the heatsink comprising a sealed enclosure defining an internal cavity surrounding the condenser pipe for containing a heat transfer liquid, a cross-section of the heatsink transverse the ...

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) extendi...