Sorry, the comment form is closed at this time. Posted by Craig at 10:00 am Tagged with: geothermal, heat exchanger, variable refrigerant flow The pipe is filled with 50% food-grade propylene/glycol, with inline pumps moving the liquid at 75 gpm. Running the pipes under the ground (an added geothermal source) eliminated the cost of insulated piping. An uninsulated pipe loops between the heat exchanger and the building. The cupronickel heat exchangers are located under a nearby dock and positioned three feet below low tide. HHEDS decide to use a heat exchanger and keep the sea water in the bay. The EPA was talking about studies and field testing. The SMCC had a deadline to renovate the Lighthouse Building. DX Geothermal Heat Pump System /Supply Groundwater Heat Pump. Geothermal Ground Heat Pump / Heat Pump Water Water Supplier. Geothermal Heat Pump / Heat Pump Water-water Supplier. I would have given up before working with the EPA- that could not have been a good experience. Chinese Geothermal Heat Pump Manufacturer. All while working with the EPA to get approval. They found seawater pumps in Japan, filters and strainers across the country in California, titanium plate-and-frame heat exchanger, and insulated piping systems. Rob and David (Harriman’s Higher Education Design Studio) searched the world looking for solutions that would let them take advantage of the sea. On ships, the heat exchanger is used to reject heat, but here, it is used to both extract and reject heat from/to the sea. Only one heat pump model was found with a heating water temperature range of 14☏ to 113 ° F, and this was coupled with a system used in the maritime industry - a cupronickel underwater ‘ship-keel cooler’ heat exchanger - that is highly resistant to saltwater corrosion. Initial roadblocks to using seawater were to find equipment that could efficiently handle the wide temperature ranges in Casco Bay and the corrosiveness of salt water. The issues using sea water are corrosion and the temperature range of Casco Bay: A geothermal heat pump is an electrically powered heating and cooling system that uses the constant heat beneath the surface earth’s surface to provide heating and cooling for a building.
This was somewhat rare, so it didn’t take long until we were only designing close loop systems using Command Aire and Econar heat pumps. We were using Friedrich heat pumps on some large residences, where they had access to active aquifers. I was reminded of my early HVAC years: the first geothermal jobs we work on at Baker Wholesale were open loop systems. The authors explain why the Southern Maine Community College (SMCC) in South Portland, Maine decided to go with geothermal, and the issues using seawater rather than a closed loop with a glycol solution. That said I found this article by Rob Klinedinst and David Reinheimer, using a Geothermal heat pump with seawater, fascinating. I’m not sure it’s possible to be further from seawater than in Fargo, North Dakota.
Spring Point Ledge Light is a sparkplug lighthouse constructed in 1897, adjacent to the campus of Southern Maine Community College.