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The average population of Missouri's counties is 53,880; St. Louis County is the most populous (987,059), and Worth County is the least (1,907). The average land area is 599 sq mi (1,550 km 2 ). The largest county is Texas County (1,179 sq mi, 3,054 km 2 ) and the smallest is St. Louis city (61.9 sq mi, 160 km 2 ).
A refrigerator designed to reach cryogenic temperatures (below 120 K, -153 °C, -243.4 °F) is often called a cryocooler.The term is most often used for smaller systems, typically table-top size, with input powers less than about 20 kW.
Sunpower, Inc [57] Stirling cycle cryocoolers and externally heated stirling engine technology Jan 2, 2013 Crystal Engineering [58] Pressure calibrators and digital test gauges Aug 7, 2013 Controls Southeast, Inc. [59] Custom-engineered thermal solutions Oct 29, 2013 Creaform (3D) [60] Portable 3D measurement technologies Dec 4, 2013 Powervar [61]
They can go as low as 40–60 K for single-stage machines, depending on the particular design. Two-stage Stirling cryocoolers can reach temperatures of 20 K, sufficient to liquify hydrogen and neon. [32] Cryocoolers for this purpose are more or less competitive with other cryocooler technologies.
Maxeon was spun off from SunPower in August 2020. Maxeon was the primary provider of solar panels for SunPower through March 2024. [ 2 ] Beyond the United States, Maxeon has sales operations in more than 100 countries and has the rights to use the SunPower brand in countries outside the United States.
SolarWorld was founded in 1988 as individual company by engineer and chief executive officer Frank Asbeck, [13] and engaged in projects to produce renewable energy. [14] In 1998, these activities were transferred to the newly founded SolarWorld AG, which went public on 11 August 1999.
Pulse tube cryocoolers are used in niche industrial applications such as semiconductor fabrication and superconducting radio-frequency circuits. [1] They are also used in military applications such as for the cooling of infrared sensors. [2] In research, PTRs are often used as precoolers of dilution refrigerators.
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