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Glow-worm [12] (1934, United Kingdom) Hermann Saunier Duval [13] (1970, Italy) Protherm [14] (1991, Czechoslovakia) The Glow-worm brand in the United Kingdom and the Saunier Duval brands in France were part of Vaillant's acquisition of British competitor Hepworth Limited in 2000. [15] [16] In the UK, the group markets both the Vaillant and Glow ...
erosion of a boiler's plates from the internal water space, particularly where there is a step inside the shell. This was a problem for early boilers made from lapped plates rather than butted plates, and gave rise to many boiler explosions. In later years it was a problem for the non-circular water drums of Yarrow boilers. Handhole
Glowworm or glow-worm is the common name for various groups of insect larvae and adult larviform females that glow through bioluminescence.They include the European common glow-worm and other members of the Lampyridae, but bioluminescence also occurs in the families Elateridae, Phengodidae and Rhagophthalmidae among beetles; as well as members of the genera Arachnocampa, Keroplatus and Orfelia ...
Arachnocampa luminosa (Skuse, 1891), commonly known as New Zealand glowworm or simply glowworm, is a species of fungus gnat, and is solely endemic to New Zealand.The larval stage and the imago produce a blue-green bioluminescence. [2]
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, [1] [page needed] [2] [page needed] including water heating, central heating, boiler-based power generation, cooking, and sanitation.
Arachnocampa is a genus of nine fungus gnat species which have a bioluminescent larval stage, akin to the larval stage of glowworm beetles. The species of Arachnocampa are endemic to Australia and New Zealand, dwelling in caves and grottos, or sheltered places in forests.
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This committee put in the form work for the first edition of the ASME Boiler Code - Rules for the Construction of Stationary Boilers and for the Allowable Working Pressures, which was issued in 1914 and published in 1915. [5] The first edition of the Boiler and Pressure Vessel Code, known as the 1914 edition, was a single 114-page volume.