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Case Studies

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Generator Runtime Reduction and Utility Savings

Coolsure was selected to participate in GSMA’s Mobile Energy Efficiency (MEE) Optimization case study in Pakistan in 2013, where Coolsure UTS-55W High Efficiency AC/DC split-type air conditioning units were trialed along with trials for deep cycle batteries and methanol fuel cells. Baseline performance was measured on 10 BTS sites across various geographies in Pakistan, and thereafter the Coolsure UTS cooling system was installed and trialed on 2 of these sites. The high efficiency of the Coolsure UTS cooling system demonstrated energy savings of >55% compared to the existing cooling system, which represents over US$2.6 million savings in annual utility bills if implemented across all the indoor BTS sites in the operator’s network. Many regions in Pakistan are subject to extended AC power outages and rolling blackouts. The Coolsure UTS-55W is capable of operating at high efficiency from the existing 24V or 48V battery during AC power outages, allowing the diesel genset starting to be delayed without risk of the BTS site overheating. The UTS-55W DC cooling capability resulted in a 3 hour reduction in diesel generator runtime per day on average and represents a reduction in diesel fuel usage of approximately 1,839,600 liters per annum across the operator’s indoor BTS sites. The tremendous utility and generator savings provided a compelling business case with a payback period of less than 2 years, resulting in deployment of 200 units in the first phase rollout.

GSMA MEE Optimization Case Study

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