Phaholpolpayuhasena Hospital in Kanchanaburi Province, Thailand, applied THERMAL-XR® graphene coating to two split-type air conditioners and measured a 37% reduction in energy use, translating to an estimated saving of 19,290 THB per year and a return on investment of under 2 years.
Case at a glance
| Customer | Phaholpolpayuhasena Hospital |
|---|---|
| Location | Thailand |
| Site type | Hospital |
| Equipment | Split-Type Air Conditioner x 2 |
| Unit 1 | Saijo Denki, 36,000 BTU, 2 years old |
| Unit 2 | Star Air, 25,000 BTU, 15 years old |
| Energy savings | 37% |
| Annual cost saving | 19,290 THB/year |
| Return on investment | < 2 years |
Background
Air conditioning is one of the largest electricity users in a hospital, where cooling runs around the clock to keep patients and staff comfortable. Over time, condenser coils lose heat transfer efficiency, which forces compressors to work harder and increases energy consumption. At Phaholpolpayuhasena Hospital, the trial covered two split-type air conditioners: a 36,000 BTU Saijo Denki unit in service for 2 years, and a 25,000 BTU Star Air unit in service for 15 years.
The solution: THERMAL-XR®
THERMAL-XR® is a graphene-enhanced coating from Graphene Manufacturing Group (GMG), designed to deliver superior heat transfer and protection for heat exchanger coils. The coating was spray-applied to the condenser coils of both split-type air conditioners, with no change to the equipment itself.
Results
Energy use was compared before and after coating:
- Electricity usage: 32 kWh/day before coating vs 20 kWh/day after
- Electricity cost: 4,338 THB/month before coating vs 2,730 THB/month after
- Carbon emissions: 5 tons CO2/year before coating vs 3 tons CO2/year after
- Annual saving: 19,290 THB per year
- ROI: < 2 years
These results equal an energy saving of 37%.
Takeaway
The Phaholpolpayuhasena Hospital case shows that coating existing split-type air conditioners can deliver large energy savings in healthcare facilities without replacing equipment, on both newer units and units that have been running for 15 years.
Want similar results at your site?
Get in touch with GMG to discuss your cooling equipment, or find a THERMAL-XR® applicator near you.
- Email: [email protected]
- Phone: +61 7 3063 6638
- Find an applicator: graphenemg.com/graphene-products/THERMAL-XR®/find-an-applicator
Measured energy savings presented in this case study are not predictors of future installation results. Estimated savings should be considered as estimates. Standard GMG disclaimer applies. All contents copyright © Graphene Manufacturing Group Ltd. All rights reserved.