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DC split air conditioning:
Going all DC at
off-grid BTS site
A Telecom operator installed a DC split air conditioner to test the energy consumption. The test has been running for 7 months and the performance data is showing an energy use for cooling below 10 kWh/day for more than 50% of the ongoing trial period.
The sites were located off-grid and cooled by AC split air conditioners powered by battery banks/AC diesel generators. An existing test site was running a long-term savings test with a DC diesel generator.
The Dantherm consultant proposed to replace the energy-intensive AC split air conditioners with DC split air conditioners. This would create an all-DC setup: avoid the high inrush current, increase battery backup time and eliminate the need for the very large AC-DC inverter previously needed.
DC Split Air Conditioning: energy-efficient, reliable off-grid cooling
- No power loss in conversion: Purely DC-powered – no need for an inverter
- Stable operation in case of power outage: Built to run on battery backup
- Low power consumption: Capacity-controlled operation
- Increased safety: Closed loop cooling
- Minimum maintenance: High-quality compressor and fans
- Long service life: +10 years
- Cost-efficient installation: The Dantherm DC split unit matches most standard split AC air conditioners in size. Therefore, the existing AC split air conditioners could simply be removed and replaced by the new units using existing bores.
Energy use below 10 kWh per day
Evident from the performance data below, the power consumption of the DC Split Air Conditioner is very low compared to that of conventional AC split air conditioners – even during the hottest months of the year for this region.
- Most interesting however, is the power consumption during the cooler months. From March-June for instance, the power consumption is
- below 10 kWh/day, which makes a significant difference in creating very high energy savings on an annual basis.
More case studies
Read other cases of DC air conditioner installations.
capacity-control vs. on/off air conditioning
Capacity-control generates significant savings over on/off control - this white paper proves it and explains why.
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DC Air Conditioner
No power loss in conversion
Monoblock and split units
Closed loop cooling
Very high performance
For off-grid and hybrid sites
Ideal for battery cooling
Understand the energy savings generated by capacity-controlled DC Air ConditionersGet white paper