Marani USA, Inc. is a recipient of the 2024 SBIR (Small Business Innovation Research) grant from the US Department of Energy for developing innovative cooling and/or air-conditioning systems powered by low temperature heat (150F and higher) instead of electricity. This is a prestigious award with only 5-10% of applicants being successful in passing the rigorous evaluation process both for technical merit and commercial potential.
 
The technology has emerged from over 20 years of our team’s prior research, which resulted in the invention of an innovative ejector cycle for refrigeration. The system is environmentally friendly by using media completely free of ozone depletion and global warming potential. Besides waste heat, it can be powered by renewable heat sources, such as solar, geothermal or biomass instead of electricity. This brings significant cost savings and clean air benefits. For example, a 50kW unit, which in a conventional design with a compressor would use 15-20kW of electricity, will save annually approx. $30,000 in electricity cost and 100 Tons of CO2 emissions per year.
 
The development is first directed towards specific industry needs, with a prototype, powered by the waste heat from compressors will deliver process water at steady temperatures of 40-50F. Other attractive applications are envisioned, such as for post-harvest crop storage in the field, for solar-powered residential and commercial A/C, cooling field hospitals, clinics, command centers, mobile solar-powered refrigerated storage for food and medicines,
for cooling laptops with heat generated by microprocessor, air-conditioning of vehicle cabins powered by exhaust heat. A significant potential exists in Third World countries and in remote areas where electric energy is unavailable, also during power outages and disasters, when even a small amount of refrigeration might be lifesaving.
 
We at Marani USA, Inc. are proud to be on the forefront of energy transition for the broader use of renewable energies and leading to net zero CO2 emissions.

LOW GRADE WASTE HEAT RECOVERY AND UTILIZATION

15% of the energy consumed by U.S. industry is wasted – 4.4 quadrillion Btu’s

Improving the energy efficiency of industrial processes and facilities as well as reducing global greenhouse gas emissions are two foremost priorities today.  One of the best ways to reduce energy consumption without carrying out any extensive investments is waste heat recovery or energy recycling. It involves tapping into previously discarded thermal energy streams and reusing it for various purposes like space heating and air-conditioning, chilling for industrial processes, electric power generation/cogeneration, pre-heating and others.

Marani USA, Inc. specializes in innovative technologies to practically utilize low -temperature (140-550F) heat from industrial processes and renewable energy sources.

Following US Department of Energy – Technology Roadmap

 

Sources of heat: 

1. Industrial waste heat from:

  • compressor stations
  • diesel and marine engines – heat recovered from: jacket water, exhaust gas, scavenge air, thermal oil circuit
  • hot liquids or steam from various industrial processes in iron and steel, cement, Aluminum processing, glass factories, forest products, power generation, chemical reactors
  • oil and gas fields, petroleum refining
  • food and beverage industry
  • mining
  • landfills/incinerators
  • exhaust of flue gases, exaust air from ovens, dryers

2. Renewable sources of heat from: 

  • biomass
  • geothermal
  • solar

Waste heat – NO FOSSIL FUEL
No burning – No CO2 emissions
Environmentally friendly working fluids
Low initial investment – Fast payback period

Our Innovative Technologies were developed under funding from: US Government
research grants, SBIR/STTR from US National Science Foundation, State of
Connecticut, US Dept. of Agriculture, US Dept. of Energy, European Union

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