hardness of water

vandens kietumas statusas T sritis Energetika apibrėžtis Vandens savybė, atsirandanti dėl kalcio ir magnio jonų vandenyje. Šildant vandenį, kietumo druskos išsiskiria nuovirų pavidalu, todėl blogina šilumos mainus. Tokios nuoviros prastina skalbiklių poveikį, ruošiamo maisto kokybę, trukdo įvairiems technologiniams procesams ir kt. atitikmenys: angl. hardness of water vok. Härte, f; Wasserhärte, f rus. жесткость воды, f pranc. dureté de l’eau, f

Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas - Kauno technologijos universitetas. – Kaunas: Technologija. . 2004.

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  • hardness of water — vandens kietumas statusas T sritis ekologija ir aplinkotyra apibrėžtis Vandens savybė, kurią lemia kalcio Ca²⁺ ir magnio Mg²⁺ jonų kiekis jame. Pagal kietumą vanduo skirstomas į: minkštą (kietumas<4 mmol/l), vidutinio kietumo (4–8 mmol/l),… …   Ekologijos terminų aiškinamasis žodynas

  • total hardness of water — suminis vandens kietis statusas T sritis Standartizacija ir metrologija apibrėžtis Vandens karbonatinio ir nekarbonatinio kiečių suma. atitikmenys: angl. total hardness of water vok. Gesamthärte, f rus. общая жесткость воды, f pranc. dureté de… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) …   Wikipedia

  • water softener — n. device attached to a water system for removing hardness from water; substance that reduces hardness of water …   English contemporary dictionary

  • water softener — /ˈwɔtə sɒfənə/ (say wawtuh sofuhnuh) noun any substance or device for destroying the hardness of water, usually by causing the precipitation, or removal from solution, of the metals whose salts cause the hardness …   Australian English dictionary

  • water softener — noun a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power • Hypernyms: ↑softener • Hyponyms: ↑zeolite * * * ˈwater… …   Useful english dictionary

  • Hardness — Hard ness, n. [AS. heardness.] 1. The quality or state of being hard, literally or figuratively. [1913 Webster] The habit of authority also had given his manners some peremptory hardness. Sir W. Scott. [1913 Webster] 2. (Min.) The cohesion of the …   The Collaborative International Dictionary of English

  • hardness — water with a high mineral content, the name deriving from the fact that it is hard to develop a lather for cleaning. The concentration of calcium and magnesium ions in water is expressed as p.p.m. or mg/l of calcium carbonate equivalents. Soft… …   Dictionary of ichthyology

  • Water supply and sanitation in the European Union — still is under the responsibility of each member state. Nevertheless, the European Union established some policies which impact the National water strategies tremendously. However, WSS evolved in every Member State independently until the… …   Wikipedia

  • Water softening — A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water.These hardness ions cause three major kinds of undesired effects. Most visibly, metal ions react with soaps… …   Wikipedia

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