Capturing the Value of Thermal Energy: Innovations in Ejector Technology from CanmetENERGY

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Authors: Jacques Martel and Dinesh Parakh, Natural Resources Canada

CETC number: 2014-230

Publication date: 2015-01-13

Abstract:

Ejectors are thermally driven compressors that can produce heating, heat upgrading, and cooling (including freezing, refrigeration, air conditioning, and process cooling), as well as improve the efficiency of heating and cooling systems.

CanmetENERGY in Varennes has considerable expertise in applying ejector technology (including ejector design, refrigerant selection, and system integration) to capture value from low grade heat efficiently and at very low cost. This expertise has led us to develop innovations which greatly expand the application of ejectors and make them even more useful.

The proof is, of course, in the results. Based on pilot scale projects, heating and cooling systems which incorporate ejectors can expect increases in efficiency ranging from 10 to 50%.

This brochure highlights the large number of ejector applications for heating and cooling systems and in industrial sectors. For more information about Natural Resources Canada’s activities related to ejectors, visit the Ejectors page of the website.