Six 5th generation prototype gas heat pump water heaters were recently commissioned. Five were installed in homes in Southern California while the sixth was sent to a test lab for further evaluation. The units were installed in June of 2018 and will continue operation for 1 year. Prior to installation, one of the prototypes was […]
SMTI’s first commercial water heating field test was commissioned in North East Tennessee in April, 2018. A 140,000 btu/hr gas absorption heat pump prototype was installed at a commercial laundry facility where it will provide base load water heating over the next year. For ease of installation, the GAHP and a pair of 100 gallon […]
SMTI’s advanced gas heating technology featured in October edition of AGA’s American Gas Magazine.
SMTI Wins DOE Grant to Commercialize Its Residential Furnace ProductSMTI is pleased to announce that it has been selected as an awardee by the US Department of Energy’s Building Technology Office for a $2.7 million grant to accelerate commercialization of a residential heat pump warm-air furnace replacement product. This innovative grant, a new approach for […]
SMTI recently achieved a 1.41 COP (coefficient of performance) at design conditions for our “Beta” 140,000 Btu/hr GAHP model. The commercial-sized (for water and space heating) prototype was developed by SMTI in cooperation with Oak Ridge National Lab and an OEM partner. Testing at ORNL in October was below original target (COP of 1.35), which […]
SMTI is proud to announce that a 4th generation GHPWH prototype was installed in a home in Birmingham, Alabama (serving a family of four). SMTI, with an OEM partner for the storage tank, fabricated and tested the prototype prior to installation. Gas Technology Institute is providing M&V (including baseline) and overall project management. The new […]
SMTI’s first residential “combi” field test installation in Erwin, TN was upgraded to a Beta model, nominal 80,000 Btu/hr GAHP. Originally installed in March using an early Alpha prototype, the GAHP provides all of the space and water heating for the home, replacing a standard gas furnace and electric storage water heater.The project, in partnership […]
SMTI delivered a 2nd generation “Beta” prototype to Gas Technology Institute for 3rd party testing. GTI will conduct both steady-state and simulated “real-world” tests at a variety of outside air and delivered water temperatures. The Beta series prototypes incorporate several design improvements from original “Alpha” series prototypes developed and tested under a DOE grant. UPDATE: […]
SMTI’s very first 80,000 Btu/hr GAHP prototype (Alpha 1) was installed as a field test unit, in a warehouse heating application. The original proof-of-concept prototype, developed under a DOE grant, is hydronically connected to two ceiling-mounted fan-coils. Each fan-coil is controlled with its own programmable thermostat, creating two distinct heating zones. The 4:1 modulating GAHP […]
In a competition with 30 other new ventures presenting at National Renewable Energy Laboratory’s 28th annual clean technologies investor event, Stone Mountain walked away with an Outstanding Venture Award. A panel of judges from amongst the financial community / investor attendees rated each presentation across four criteria. SMTI was one of three winners out of […]