08/01/2014

Waste Heat a Source of Energy

Low-grade heat can generate electricity

 
Rechargeable batteries

Rechargeable batteries offer a way to capture low-grade heat expelled by industrial and power plants.

What if excess heat generated by industrial processes and electric power plants could be harnessed to make electricity?

Researchers at MIT and Stanford University have discovered a way to capture this wasted energy with rechargeable batteries.

The low-temperature waste-heat conversion aims at harvesting heat of less than 200 degrees F., which accounts for a large proportion of potentially harvestable waste heat. In a demonstration with waste heat of 60 C. (or 140 F.), the new system has an estimated efficiency of 5.7%.

Since the voltage of rechargeable batteries depends on temperature, the new system combines the charging-discharging cycles of these batteries with heating and cooling, so that the discharge voltage is higher than the charge voltage.

The system can efficiently harness even relatively small temperature differences, such as 120 F.

This potential is particularly attractive as almost 30% of energy consumption in the U.S. ends up as low-grade heat, MIT notes. The process to recover this energy is described in the journal Nature Communications.

 


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Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

Bluebeam® Revu® simplifies digital facilities document management from design review to leveraging as-builts, maintenance manuals and O&Ms submittals.

 


 
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