The patent's inventor is West,
This patent was filed on
From the background information supplied by the inventors, news correspondents obtained the following quote: "Prior-art large scale photovoltaic power converters essentially use three types of heat removal systems, forced air convection, liquid cooling or a combination of the two. In the forced convection case, fans are required to move ambient air across power converter heat producing or heat-sinking components such as semiconductor devices coupled to heatsinks, magnetic components and power capacitors. In the case of prior-art liquid cooling, fans are used to remove heat from a liquid-to-air heat exchanger. In all cases, the ambient air carries particulate contamination that over time decreases the efficiency of the power converter heat-removal systems. Air filters are not a viable option because of maintenance costs as filters cannot be replaced after every dust storm. Cooling fans are typically the least reliable component in a power conversion system and fan replacement is categorically the highest maintenance cost item over the life of the power converter.
"The present invention is a liquid cooled photovoltaic power converter with a liquid-to-earth heat exchanger. With the invention, removal of heat from primary power converter heat sources is accomplished without cooling fans or ambient air exchange in order to eliminate associated particulate contamination and maintenance issues."
Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "The preferred embodiment of the invention is a liquid cooled photovoltaic power converter with a liquid-to-earth heat exchanger. A number of closely related invention variants are disclosed including heat removal from heat producing components within the power converter using; liquid cooled chill plates for primary, conducted heat removal, liquid-to-air heat exchangers for secondary heat removal by forced convection and combinations of both. In the case of liquid-to-air heat exchangers, two sub-variants are disclosed, (i) an open system where a fan is used to draw ambient air through a geo-cooled, liquid-to-air heat exchanger to pre-cool ambient air before directing this air over secondary, less contaminate sensitive heat producing power converter components, like filter chokes and transformers and (ii) a closed system where a fan is used to circulate air inside the power converter enclosure through a geo-cooled, liquid-to-air heat exchanger and over secondary heat producing power converter components to reduce component and interior enclosure temperatures. In the case of the closed system, an opportunity exists to thermally insulate the skin of the power converter from radiant solar gain.
"The preferred embodiment of the invention uses a large coolant reservoir to provide mass thermal storage wherein the temperature of the coolant is raised during the solar day when the power converter is producing power and then lowered during the night by heat exchange though a sub-grade heat exchanger.
"The geo-cooling solution is a natural fit for large solar power plants where a large land area is available for the sub-grade heat exchanger and where piping for the heat exchanger can be place in the same trenches as the photovoltaic system wiring conduits. In addition, metallic heat exchanger piping can serve double-duty as the photovoltaic system ground grid."
For the URL and additional information on this patent, see: West,
Keywords for this news article include: Electronics, Photovoltaic,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC
Most Popular Stories
- Herbalife Puts Off Meeting for Icahn Talks
- Obama, Ukraine Discuss Russian Incursion in Crimea
- Senate Reaches Unemployment Benefits Deal
- Calumet Photo Files for Bankruptcy
- Navarro Celebrates 2 Years of Vida Mia
- Venezuela Death Toll Reaches 28
- Federal Gov't Deficit Continues to Decline
- Russia Holds Large Military Drills in South
- Ukraine Moves Closer to Joining E.U.
- Dmytro Firtash, Ukrainian Billionaire, Arrested in Vienna