NIDON Clean Energy welcomes JEBSCO Mechanical, Inc. as a primary design and build partner. JEBSCO’s expertise in commercial and residential HVAC and solar thermal technology is a major value-add as NIDON continues to scale and expand its business into new frontiers.
This chiller is rated to typically draw about 63 amps but with supplementary power from the SunTrac panels, the load across three days in 28°C experienced a 75% decrease with a near steady state amp draw of 16 amps:
eGauge meter reading across a one-day time interval (April 21, 12:10 PM to April 22, 12:10 PM HST)
eGauge meter reading across a 12-hour time interval (April 21, 12:10 AM to April 22, 12:10 PM HST)
eGauge meter reading across a 10-minute time interval (April 22, 12:00 PM to 12:10 PM HST)
Timestamps reflected on the above data captures follow local Philippine time (PHT) and is to be adjusted back 18 hours to depict actual amp draw with respect to time of day in Honolulu, Hawaii (HST). Follow this link for live meter readings: eGauge Data for 30 Ton Carrier Chiller (To view amp data specific to activity from the SunTrac panels, scroll down to the control box and uncheck all boxes except for CT3, CT1, and CT2 Amperage.)
Along with the massive drop in amp draw, there is a corresponding decrease in the work being conducted by the unit’s digital scroll compressor leading to a significant reduction in the machine’s wear and tear on top of substantial electrical cost savings.
Data is being tracked and recorded by an eGauge metering device in a three-phase configuration and placed inside an outdoor-rated enclosure:
Black, red, white, and blue AWG 12 wires in a three-phase install configuration
The eGauge device is placed inside an outdoor-rated enclosure
AC, CT, and Ethernet cables all safely and professionally lodged
Update: Efficiency data across two weeks
Below is a screen capture of meter readings for the first two weeks of recording with the eGauge. The compressor amp draw still averages at 15-16 amps, with significant dips between midnight and dawn due to the cooler ambient temperature.
Update: One month’s worth of meter readings
A month of meter readings shows amp draw still at an average of 15-16 amps.
EDIT: During a recent swap back testing, it was discovered that the setup of the eGauge recorded lower than the actual amp readings. This was determined while working with Carrier as to how digital scroll compressors work.
This chiller is rated to typically draw about 63 amps but with supplementary power from the SunTrac panels, the load across three days in 28°C experienced a 57% decrease with an average of 27 amps, plus or minus of 2.5 amps.
The recorded amp draw by compressors post-installation is reduced significantly. Energy savings will correspond with amperage drop to the compressors, along with reduced wear.
For the Hawaii market, this is foundational to achieving the Hawaii Clean Energy Initiative which aims to achieve 100% renewable energy reliance by 2045. SunTrac has been successfully deployed across Hawaii on all major brands of air conditioning, to now include commercial systems. The technology reduces demand charges and electrical usage, leading to less land for solar, wind, and battery, protecting the people and the beauty of the islands in the process.