Next-Generation Thermal Solutions

Contact Us

Makai Ocean Engineering provides custom, high-performance heat exchanger designs and fabrication. The proprietary technology, TFHX™, is constructed using novel advanced manufacturing methods. Makai’s facilities include manufacturing, thermal testing, and structural and fatigue testing.

TFHX™ heat exchangers can be designed for liquid, air-cooled, vapor-cycle, or phase change material applications. The technology is the result of over 10 years and over $20million of R&D. Contact us with your need– and let us provide you with a better thermal management solution.

Plants and Processing
Gas Sweetening
OTEC Tower
High-Velocity Air
Custom Shapes
OTEC Tower
Seawater Cooling
Corrosion Resistant
Small Footprint
OTEC Tower


Custom TFHX™ Thermal Management Solutions

The Fundamental Difference:
Makai’s TFHX™ consists of stacked layers of individual proprietary “plates” that together form the heat exchanger core. Manufacturing methods allow for custom non-linear geometries, ultra-compact flow channels, and corrosion resistant materials at dimensions scales from 10cm to 1m.

TFHX™ enables high quality control on the material properties, high smoothness, resistance to fouling, and durability; enabling production of micro-channel heat exchanger performance from small to large scale thermal loads.


Key Features

  • Ultra-compact size
  • Conformance to irregular geometries
  • Corrosion resistance
  • Easy maintenance


  • Significant volumetric performance gains
  • Negligible increase in ΔP
  • Enhanced U-values

Custom Design

  • Expert design team
  • Proven manufacturing methods
  • Rapid turnaround


Contact Us

Makai’s advanced manufacturing and testing facility enables rapid prototyping and construction of custom TFHX™ geometries based on specific needs and operating conditions. Test stations are available for different fluids (water, ethylene glycol water (EGW), anhydrous ammonia, other refrigerants, oil, etc.), flow orientations, operating pressures and fatigue simulation.

HX AlgaeCommercial prototype TFHXTM units installed at an algae growth facility.
HX Test StationMakai’s 100kW heat exchanger test station.