27) This is the main ('CYCLONE') fan driving air (entering through the centre) through to the water cooling tower on its left. The cooled water is piped back into the Main Operations Block air conditioning Plant. Note: Air for this system is drawn from the corridor- no filtering is present. The warm and moist air exits the cooling tower above and leaves the system in a separate exit vent on the surface. You may walk down to the left of the fan and look inside the cooling tower at the arrangement of water jets and slats. When looking inside the cooling tower you may look at the main rotary fan assembly

Look further around to your right

 

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Copyright Mark.A.Bennett @ Subterranea Britannica 2000