Importance

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Abstract

A telecommunications outdoor shelter having an interior chamber containing one or more vertical racks of telecommunications and/or electronic components, and an AC powered air conditioner configured to deliver cooled air to said interior chamber, is characterized by a back-up cooling apparatus comprising: an outdoor refrigeration system exterior to the interior chamber configured for supplying refrigerant or chilled heat transfer fluid to an evaporator mounted in the interior chamber and for rejecting heat to ambient outside air; an air cooling unit comprising an air handler and evaporator mounted in the interior chamber and configured to receive refrigerant or heat transfer fluid from the outdoor refrigeration system and provide cool air to the interior chamber; an air distribution assembly cooperating with the comprising air cooling unit and one or more primary air ducts for directing cooled air from the evaporator and a plurality of secondary air ducts communicating with each of the primary air ducts, wherein each of the secondary air ducts is configured for delivering cooled air to one or more selected vertical racks at one or more vertical levels and wherein the handler includes one or more fans for moving warm air from the interior chamber to the evaporator and forcing cooled air through the one or more primary air ducts and the one or more secondary air ducts; an electric power generating unit configured to provide power for operating the outdoor refrigeration system and the indoor air cooling unit; and a sensor configured to initiate operation of the back-up cooling apparatus in response to AC power outage and/or interior chamber air temperature.

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First Claim