News and Press Release
Development of natural refrigerant heat pump receives grant from U.S. Department of Energy

New heat pump technology reduces energy consumption by 50 percent

NASHVILLE, Tenn., August 26, 2013 – Part of a Department of Energy (DOE) project to reduce energy bills and greenhouse gas emissions, S-RAM Dynamics has been awarded a grant to help commercialize a new heat pump that does not use any high global warming refrigerants.

A highly energy efficient technology, the S-RAM heat pump will also reduce energy consumption for commercial and industrial customers by more than 50 percent when compared to other common refrigeration and heating systems.  The system is being developed in coordination with Purdue University and performance testing will be done at DOE’s Oak Ridge National Laboratory, a leading innovator of heat pump technology.

“This is a big award for us. Energy efficiency and greenhouse gas emissions are major concerns, and the DOE recognized the potential impact of the new heat pump using our company’s proprietary compressor and expander technology,” said S-RAM President Lee Jestings.

Assistant Secretary for Energy David Danielson announced the selection of the S-RAM technology as part of the “Next Generation Energy Efficient Buildings Technologies” program.  According to Danielson, “Energy efficient technologies – from improved heating and cooling systems to better windows and lighting – provide one of the clearest and most cost-effective opportunities to save consumers money while curbing greenhouse gas emissions.”

Heat pumps offer the most energy-efficient way to heat and cool buildings in many applications.  They do this by removing or adding heat from the desired area or application using other natural renewable heat sources like the ground, air and water.  Most heat pumps use hydrofluorocarbons (HFCs) to accomplish this, but S-RAM’s heat pump replaces these chemicals with a natural refrigerant, eliminating any greenhouse gas emissions.

“We are excited to be part of testing S-RAM’s technology and to assist them with commercializing this heat pump,” said Dr. Eckhard Groll, the Reilly Professor of Mechanical Engineering at Purdue University.  “This technology can eliminate the use of high global warming refrigerants and improve energy efficiency while providing comfortable and productive indoor environments for occupants.”

About S-RAM Dynamics:

S-RAM Dynamics, based in Nashville, Tenn., is a privately-held energy technology company focused on commercializing next generation, energy-efficient technologies including natural refrigerant HVAC (heating, ventilation, and air conditioning) applications, waste heat to power engines and power generation engines.  The company has 47 patents for its variable power conversion technology.

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Frost & Sullivan Recognizes Pioneering S-RAM Technology

Palo Alto, Calif. — Based on its recent analysis of the power supplies market, Frost & Sullivan recognizes Sanderson Engine Development, LLC (SED) with the 2008 North American Frost & Sullivan Award for Emerging Company of the Year. By designing the revolutionary Sanderson Rocker-Arm Mechanism (S-RAM), SED has successfully created a paradigm shift in the industry, and introduced a technology with disruptive market potential. The S-RAM is an emerging core technology for an entirely new generation of engine-driven pumps, compressors, generators, and any other device for which current power systems deploy multiple components (as in a crankshaft engine and a swash plate hydraulic pump) to transfer power.

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S-RAM Receives New Technology Patents

Upton, MA, May 22, 2007 – Sanderson Engine Development Company, a developer of ultra high-efficiency engine technology, has announced the receipt of three new patents by the U.S. Patent and Trademark Office. The patents cover a highly innovative piston assembly, an associated piston connecting joint, and a variable compression ratio mechanism. The piston joint and associated components are core components of the Sanderson Rocker Arm Mechanism (S-RAM) invented by Robert and Albert Sanderson.

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LSHT Motor Tests Show Impressive Performance

Palo Alto, CA — Hydraulics & Pneumatics Magazine:

The latest tests of a recent invention, the Sanderson rocker-arm mechanism (SRAM), Figure 1, show advantages for this method of converting reciprocating motion into rotary motion. The low frictional losses of the SRAM pay off in high torque and overall efficiency in hydraulic devices, and may lead to lower heat generation and higher starting torque than with conventional motors and pumps.

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Pump Cuts Friction By Eliminating Side Loads

Palo Alto, CA — Hydraulics & Pneumatics Magazine:

Based on its recent analysis of the power supplies market, Frost & Sullivan recognizes Sanderson Engine Development, LLC (SED) with the 2008 North American Frost & Sullivan Award for Emerging Company of the Year. By designing the revolutionary Sanderson Rocker-Arm Mechanism (S-RAM), SED has successfully created a paradigm shift in the industry, and introduced a technology with disruptive market potential.

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Fluid Power Targeted for New Pump-Motor Design

Palo Alto, CA — Hydraulics & Pneumatics Magazine:

Based on its recent analysis of the power supplies market, Frost & Sullivan recognizes Sanderson Engine Development, LLC (SED) with the 2008 North American Frost & Sullivan Award for Emerging Company of the Year. By designing the revolutionary Sanderson Rocker-Arm Mechanism (S-RAM), SED has successfully created a paradigm shift in the industry, and introduced a technology with disruptive market potential.

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