{"id":11104,"date":"2024-09-15T22:30:58","date_gmt":"2024-09-15T20:30:58","guid":{"rendered":"https:\/\/firebox.com.ua\/?p=11104"},"modified":"2024-09-15T22:30:58","modified_gmt":"2024-09-15T20:30:58","slug":"teplonositel-kak-par-opredelenie","status":"publish","type":"post","link":"https:\/\/firebox.com.ua\/cs\/teplonositel-kak-par-opredelenie\/","title":{"rendered":"Chladivo jako p\u00e1ra (definice)"},"content":{"rendered":"

Chladivo jako p\u00e1ra<\/strong> je pracovn\u00ed l\u00e1tka slou\u017e\u00edc\u00ed k p\u0159enosu Term\u00e1ln\u00ed energie<\/a> v syst\u00e9mech vyt\u00e1p\u011bn\u00ed nebo v\u00fdm\u011bny tepla, ve kter\u00fdch je chladic\u00ed kapalina ve stavu p\u00e1ry. P\u00e1ra se pou\u017e\u00edv\u00e1 p\u0159edev\u0161\u00edm v pr\u016fmyslov\u00fdch syst\u00e9mech a koteln\u00e1ch, kde jsou vy\u017eadov\u00e1ny vysok\u00e9 teploty a efektivn\u00ed p\u0159enos tepla.<\/p>\n

Chladivo jako p\u00e1ra: vlastnosti<\/h3>\n
    \n
  1. Vysok\u00e1 teplota<\/strong>:\n
      \n
    • P\u00e1ra jako chladivo je schopna p\u0159en\u00e1\u0161et teplo p\u0159i vy\u0161\u0161\u00edch teplot\u00e1ch ne\u017e kapaln\u00e1 chladiva (nap\u0159\u00edklad voda). D\u00edky tomu je efektivn\u00ed pro procesy, kde jsou vy\u017eadov\u00e1ny vysok\u00e9 teploty (nad 100 \u00b0C), nap\u0159\u00edklad v pr\u016fmyslov\u00fdch nebo tepeln\u00fdch elektr\u00e1rn\u00e1ch.<\/li>\n<\/ul>\n<\/li>\n
    • \u00da\u010dinnost p\u0159enosu tepla<\/strong>:\n
        \n
      • P\u0159i kondenzaci p\u00e1ry (p\u0159echodu z plynn\u00e9ho skupenstv\u00ed do kapaln\u00e9ho) se uvol\u0148uje zna\u010dn\u00e9 mno\u017estv\u00ed latentn\u00ed tepeln\u00e9 energie. D\u00edky tomu je p\u00e1ra \u00fa\u010dinn\u00e1 pro p\u0159enos velk\u00e9ho mno\u017estv\u00ed tepla na velk\u00e9 vzd\u00e1lenosti nebo pro oh\u0159ev velk\u00fdch p\u0159edm\u011bt\u016f.<\/li>\n<\/ul>\n<\/li>\n
      • \u00daspora energie<\/strong>:\n
          \n
        • Pou\u017eit\u00ed p\u00e1ry umo\u017e\u0148uje sn\u00ed\u017eit mno\u017estv\u00ed paliva pro oh\u0159ev chladic\u00ed kapaliny, proto\u017ee p\u00e1ra rychle dos\u00e1hne po\u017eadovan\u00e9 teploty a p\u0159en\u00e1\u0161\u00ed teplo vysokou rychlost\u00ed.<\/li>\n<\/ul>\n<\/li>\n
        • Tlak<\/strong>:\n
            \n
          • Na rozd\u00edl od kapaln\u00fdch syst\u00e9m\u016f mus\u00ed b\u00fdt v parn\u00edch syst\u00e9mech chladivo natlakov\u00e1no, aby p\u0159i vysok\u00fdch teplot\u00e1ch z\u016fstalo v plynn\u00e9m stavu. To vy\u017eaduje zvl\u00e1\u0161tn\u00ed pozornost na t\u011bsnost syst\u00e9mu a provozn\u00ed bezpe\u010dnost.<\/li>\n<\/ul>\n<\/li>\n
          • Parn\u00ed a kondenza\u010dn\u00ed syst\u00e9m<\/strong>:\n
              \n
            • Parn\u00ed syst\u00e9my \u010dasto vy\u017eaduj\u00ed provoz v re\u017eimu p\u00e1ra-kondenz\u00e1t. To znamen\u00e1, \u017ee po p\u0159enosu tepla p\u00e1ra kondenzuje, m\u011bn\u00ed se zp\u011bt na kapalinu a vrac\u00ed se do kotle k op\u011btovn\u00e9mu oh\u0159evu. T\u00edm se syst\u00e9m uzav\u0159e a zv\u00fd\u0161\u00ed se jeho \u00fa\u010dinnost.<\/li>\n<\/ul>\n<\/li>\n
            • Odolnost proti mrazu<\/strong>:\n
                \n
              • Na rozd\u00edl od teplonosn\u00fdch kapalin p\u00e1ra nepodl\u00e9h\u00e1 zamrz\u00e1n\u00ed, tak\u017ee je vhodn\u00e1 pro pou\u017eit\u00ed v prost\u0159ed\u00ed s n\u00edzkou teplotou.<\/li>\n<\/ul>\n<\/li>\n
              • Hardwarov\u00e9 po\u017eadavky<\/strong>:\n
                  \n
                • Pr\u00e1ce s p\u00e1rou vy\u017eaduje specializovan\u00e9 kotle, potrub\u00ed a za\u0159\u00edzen\u00ed, kter\u00e9 jsou odoln\u00e9 v\u016f\u010di vysok\u00fdm teplot\u00e1m a tlaku. Syst\u00e9my \u0159\u00edzen\u00ed p\u00e1ry tak\u00e9 vy\u017eaduj\u00ed p\u0159esn\u011bj\u0161\u00ed lad\u011bn\u00ed a ovl\u00e1d\u00e1n\u00ed.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                  Chladivo jako p\u00e1ra<\/strong> pou\u017e\u00edvan\u00e9 v pr\u016fmyslu, nap\u0159\u00edklad v tepeln\u00fdch elektr\u00e1rn\u00e1ch, v\u00fdrobn\u00edch z\u00e1vodech a velk\u00fdch koteln\u00e1ch.<\/p>","protected":false},"excerpt":{"rendered":"

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