EMISSIS MAXWELL ™ CASE STUDY

ARAMCO INSTALLATION CS BUILDING 1900, DHAHRAN, KSA

Pilot Implementation -Building 1900:
12,000 sq ft mixed use, three-story building, cooled by two 60-ton air-cooled chillers (24/7/365).
Local electricity costs are US$ 0.08 per kWh.

• Improvement in chiller energy efficiency of 16.9%
• Overall system energy savings of 15%
• Payback Period of 2.2 years (annual ROI 46% over 10 years)

Assessment of Roll-out plan:
Aramco engineers conducted a company-wide evaluation of the cost / benefit for implementing Maxwell™ in all non-industrial closed-loop chiller systems(totaling 63,000 tons).

• Aramco would achieve annual energy savings of
• US$ 4.64M with an installation cost of US$ 10.2M
• CO2 savings est. 25,000 tons annually

Phase II Implementation:
Maxwell™ has been included in Aramco’s “Proven Technology Database” on the Board of Engineers Portal. HTMS, through Saudi Aramco Energy Ventures, are now engaged in the roll-out of Maxwell with Aramco specifically and the KSA more generally:

• First three HVAC installations with Aramco identified. First industrial application for Aramco in planning. Industrial application for SABIC also in planning. Working with Tabreed (leading District Cooling provider in GCC) on demonstration in KSA.

• Kingdom-wide implementation would result in energy savings of $600M and CO2 savings of 3M tons annually.

Aramco sustainability report details next steps towards operational net-zero ambition

“A revolutionary cooling solution for the challenges of a warming planet”

Maxwell™ is an engineered suspension of sub-micron aluminum oxide particles in a base fluid of water or water/glycol (“nanofluid”). Maxwell™ is a drop-in additive for cooling and heating systems, that works by enhancing heat transfer and thereby significantly reducing energy consumption and carbon emissions.

Maxwell™ is named after James Clerk Maxwell the pioneering Scottish scientist who in the late 19th Century discovered that adding metallic particles to water improved thermal energy transfer, thus creating the world’s first heat transfer fluid. Over a century later, Maxwell™ is our patented implementation of this discovery, allowing systems using closed hydronic loops to benefit from the thermal properties of stable suspensions of metallic nanoparticles.

How Maxwell™ Works in a Chilled Water System

Water (or a water/glycol mix) is circulated from the chiller in a closed evaporator loop to Air Handling UJnits (‘AHU’). Maxwell™ increases the transfer of heat in the chiller evaporation cycle, reducing compressor “lift” or work and thus, the consumption of electrical energy. Maxwell™ also increases thermal energy transfer in the AHU coils, which allows for higher chilled water set points, and lower fluid and air flow rates through pumps and fans, reducing their electrical power consumption. Maxwell™ can also be used in a closed condenser circuit but not with an open cooling tower.