Graphene Manufacturing Group Ltd (TSX-V:GMG, OTC:GMGMF) (GMG) has shared the impressive results of heat transfer demonstrations for aluminium coated with THERMAL-XR (TXR) powered by GMG Graphene, compared to uncoated bare aluminium.
The company said the University of Queensland Materials Performance consultancy (UQMP) verified that GMG’s THERMAL-XR when applied to aluminium reduces the surface temperature by around 15% in temperatures between 70C and 90C.
The Brisbane, Australia-based cleantech company explained that in an experiment, a 10 millimeter (mm) thick aluminium plate was divided into two parts. GMG’s THERMAL-XR was applied to the top side of one half of the plate, while the other remained uncoated.
Then the same heat source was applied to the underside of both adjacent plates simultaneously. During the experiment, temperature measurements were then taken from the top and bottom sides of both plates as the heat source was cycled up and down, said the company.
Wide applications
In a statement, Graphene Manufacturing CEO Craig Nicol said: “This is a powerful demonstration of GMG’s THERMAL-XR’s ability to increase the transfer of heat. The graphene-enhanced heat transfer properties of THERMAL-XR are apparently outweighing the traditional insulating effect of coatings.”
“GMG believes the ability to increase heat transfer with a simple application of the technically advanced THERMAL-XR can make a significant contribution to improved performance and efficiency while reducing energy demand in a wide range of applications," he added.
When the THERMAL-XR coating was applied to the top side of the 10 mm aluminium plate, more heat transfer was observed away from the common heat source (compared to the panel that had no coating). Moreover, the non-coated underside of the coated panel – being the side directly exposed to the heat source – remained approximately 15% cooler than the heat-exposed side of the uncoated panel, within the temperature range of 70° C to 90° C, noted the company.
THERMAL-XR powered by the GMG Graphene coating system is a unique way of improving the conductivity of heat exchange surfaces, resulting in efficiency and potential power reduction when applied to air conditioning condenser coils or other industrial processes needing heat transfer.
The firm noted that the performance of existing air conditioners can also be “increased” with THERMAL-XR process fluids (PREP and ACTIVATE) which “clean and remove corrosion on the coil” before applying THERMAL-XR RESTORE.
GMG said it is evaluating other metals used in heat transfer applications and at various temperature settings and will publish market updates from time to time on progress.
GMG is a member of Stanford University’s Thermal and Fluid Sciences Affiliates Program. It said it will continue to work with UQMP on heat transfer data verification.
The company is working with several companies globally to engage distributors and direct sales for the HVAC-R maintenance market. It is also engaging with companies for direct selling of THERMAL-XR for industrial applications with high energy requirements, and high emissions – including oil and gas production, power generation, liquified natural gas production, mining, and mineral processing.
Contact the author Uttara Choudhury at uttara@proactiveinvestors.com
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