Aisin Chemical (Thailand) Co., Ltd., an affiliate of global automotive parts manufacturer Aisin Corporation, applied THERMAL-XR® graphene coating to two air-cooled chillers and measured a 12.30% reduction in energy use, translating to an estimated saving of 432,513 THB per year and a return on investment of under 2 years.
Case at a glance
| Customer | Aisin Chemical (Thailand) Co., Ltd. |
|---|---|
| Location | Thailand |
| Site type | Automotive parts manufacturing plant |
| Equipment | Air-Cooled Chiller |
| Brand | Daikin |
| Capacity | 443 kW x 2 |
| Model | UAA125ST3M-FBB |
| Equipment age | 9 years |
| Energy savings | 12.30% |
| Annual cost saving | 432,513 THB/year |
| Return on investment | < 2 years |
Background
Air conditioning and chiller systems are among the largest electricity users on an industrial site. Over time, condenser coils lose heat transfer efficiency, which forces compressors to work harder and increases energy consumption. At Aisin Chemical, the cooling load is carried by two Daikin air-cooled chillers, each with a capacity of 443 kW, and they have been in service for 9 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 air-cooled chillers, with no change to the equipment itself.
Results
Energy use was compared before and after coating:
- Electricity usage: 2,294 kWh/day before coating vs 2,011 kWh/day after
- Electricity cost: 3,516,365 THB/year before coating vs 3,083,852 THB/year after
- Carbon emissions: 373 tons CO2/year before coating vs 327 tons CO2/year after
- Annual saving: 432,513 THB per year
- ROI: < 2 years
These results equal an energy saving of 12.30%.
Takeaway
The Aisin Chemical case shows that coating existing air-cooled chillers can lower energy consumption and electricity costs without replacing equipment, even on large-capacity units that have been running for 9 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.