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Pushing Boundaries on Performance & Design: the ClimateMaster Trilogy® 40 Q-Mode™ Geothermal Heat Pump – Part II


The ORNL R&D 100 award winning team: Van Baxter, Ed Vineyard, Jeff Munk, Anthony Gehl, Moonis Ally, Keith Rice, and Bo Shen picture with the ClimateMaster Trilogy® 40 Q-Mode™ Geothermal Heat Pump.

The ClimateMaster Trilogy® 40 Q-Mode™ Geothermal Heat Pump is the outcome of a 5 year collaboration between ClimateMaster, Inc., and Oak Ridge National Laboratory (ORNL). The Trilogy 40 Q-Mode is an ultra- high-efficiency geothermal heat pump that provides space heating, cooling, and water heating. Laboratory evaluation and modeling by ORNL predicted that the Trilogy 40 Q-Mode could save 55% to 61% of annual energy use and cost for space conditioning and water heating in residential applications versus new mini- mum efficiency (SEER 13) air-source heat pumps and electric resistance storage water heaters. These sav- ings results were confirmed in field trials. The Trilogy series also became the first geothermal heat pumps ever certified by the Air Conditioning, Heating, and Refrigeration Institute (AHRI) to exceed 40 EER at ground-loop (GLHP) conditions.

The ClimateMaster Trilogy® 40 Q-Mode™ Geothermal Heat Pump installed in ZEBRAlliance research home.

The Trilogy 40 Q-Mode reduces energy consump- tion by combining 3 variable speed technologies: an inverter-driven compressor, indoor air blower, and water pump, all of which feature permanent magnet electric motor technology, enabling greater efficiency at part-load conditions. This system concept uses one variable-speed (VS) modulating compressor, a VS indoor blower, a VS pump for ground heat exchanger (GHX) fluid circulation, and a VS pump for hot water circulation. A 50 gallon (~189 l) WH tank is included. (For further details on this system, please refer to “Pushing Boundaries on Performance & Design: the ClimateMaster Trilogy® 40 Q-ModeTM Geothermal Heat Pump (Part 1),” Energy Design Update, August 2013, Vol. 33 No. 8.)

Read more about the ClimateMaster Trilogy® 40 Q-ModeTM Geothermal Heat Pump in this article from Energy Design Update (page 5).

Reprinted with permission of Energy Design Update. Energy Design Update (ISSN 0741-3629) is published monthly by Aspen Publishers, 76 Ninth Avenue, New York, NY 10011. (212) 771-0600. To subscribe, call 1-800-638-8437.

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