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refrigerant. The refrigerant used in the heat pumps in the Alaska SeaLife Center project is known as R-134a. HFC-134A replaced an older refrigerant, CFC-12 when CFCs were largely banned from use in 1987. HFC-134A does not damage the ozone layer like its CFC predecessors. This project also used a dual high efficiency rotary screw compressors on a single water-to-water heat pump that is an emerging technology; this feature is what allows the temperature lifting of heat from as low as 37°F up to the target building heat temperature of 120°F. A stainless steel and titanium coated plate-and-frame heat exchanger is also required to prevent corrosion during the process of removing heat from the raw seawater flow in advance of the heat pump. (Source Alaska Center for Energy and Power) http://energy-alaska.wikidot.com/seawater-heat-pump-demonstration-project#toc3 Heat Pumps at the Seward Sea Life Center Photo by Lang Van Dommelen In Juneau, the NOAA Ted Stevens Marine Research Institute located at Lena Point installed a seawater heat pump energy system in 2011. The facility, with other features, is 100% green. Green can also mean saving green. The seawater energy recovery system will replace 60,000 gallons of heating oil annually, saving taxpayers an estimated $130,000 a year. The system is expected to recoup the half-million dollars invested in it in about five years. The new, year-round seawater heat recovery system produces enough energy to heat 60 houses. It could be used as an energy recovery model throughout the U.S. In fact, analysis is currently underway to see if a similar technology could be used to heat NOAA’s Kodiak facility. Jim Rehfeldt of Alaska Energy Engineering, LLC of Juneau designed the project. 4PDF Image | Heat Pump Technology
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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