{"id":2900,"date":"2015-01-23T10:22:43","date_gmt":"2015-01-23T09:22:43","guid":{"rendered":"http:\/\/www.tourdebier.cz\/francek\/?p=2900"},"modified":"2016-01-08T17:40:25","modified_gmt":"2016-01-08T16:40:25","slug":"uklidnovaci-spirala","status":"publish","type":"post","link":"https:\/\/www.tourdebier.cz\/francek\/uklidnovaci-spirala\/","title":{"rendered":"Uklid\u0148ovac\u00ed spir\u00e1la"},"content":{"rendered":"

Po dokon\u010den\u00ed hrad\u00edc\u00edho ventilu viz.: https:\/\/www.tourdebier.cz\/francek\/vychod-ze-slepe-ulicky-hradici-ventil\/<\/a> , jsem v m\u00e9m „archivu“ narazil na 1 m dlouhou nerezovou trubi\u010dku o pr\u016fm\u011bru 6mm, kter\u00e1 m\u011b inspirovala pro v\u00fdrobu uklid\u0148ovac\u00ed spir\u00e1ly pro nato\u010den\u00ed „\u0161nytu“ p\u0159i le\u017een\u00ed v KEGu. Trubi\u010dku jsem sto\u010dil na obalu se silikonov\u00fdm tmelem, p\u0159iletoval na n\u00e1trubek 1\/4\u00b4\u00b4, kter\u00fd jsem na\u0161rouboval do kulov\u00e9ho ventilu takt\u00e9\u017e dimenzi 1\/4\u00b4\u00b4. Na druh\u00fd konec kul\u00e1\u010de jsem ud\u011blal z 5\/8\u00b4\u00b4 matice s p\u0159\u00edrubou \u00a0a n\u00e1trubku 1\/4\u00b4\u00b4 op\u011bt letov\u00e1n\u00edm redukci pro na\u0161roubov\u00e1n\u00ed na nar\u00e1\u017ee\u010d. V\u00fdsledek je na obr\u00e1zc\u00edch. Pro optim\u00e1ln\u00ed funkci by bylo vhodn\u00e9 pou\u017e\u00edt trubi\u010dku je\u0161t\u011b s men\u0161\u00edm pr\u016fm\u011brem, anebo 6mm\u00a0 s d\u00e9lkou alespo\u0148 2m.<\/p>\n

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\"SAM_7325\"<\/p>\n

\"SAM_7329\"<\/p>\n

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\"SAM_7326\"\"SAM_7328\"<\/p>\n

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Po na\u0161roubov\u00e1n\u00ed na nar\u00e1\u017ee\u010d vznikl hybrid „Hrad\u00edc\u00ed ventil s uklid\u0148ovac\u00ed v\u00fd\u010depn\u00ed spir\u00e1lou“<\/p>\n

\"SAM_7323\"<\/p>\n

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Dodatek z 28. 8. 2015<\/h5>\n

Pro navr\u017een\u00ed optim\u00e1ln\u00ed\u00a0d\u00e9lky\u00a0pivn\u00edho veden\u00ed s plnopr\u016ftokov\u00fdm ventilem, co\u017e je i v\u00fd\u0161e popsan\u00e9 za\u0159\u00edzen\u00ed, je vhodn\u00e9 zvolit v\u00fdpo\u010dtovou, i kdy\u017e jednoduchou, metodu.\u00a0 Jako z\u00e1klad budeme po\u010d\u00edtat tlakovou ztr\u00e1tu proud\u00edc\u00ed kapaliny t\u0159en\u00edm,\u00a0s korekc\u00ed na v\u00fd\u0161ku t\u00e9to dopravovan\u00e9 kapaliny.<\/p>\n

\u00a0Zad\u00e1n\u00ed:<\/h6>\n

Chci na\u010depovat za 10 sekund 0,5 l piva z le\u017e\u00e1ck\u00e9ho sudu s tlakem 0,6 bar o teplot\u011b 2\u00b0C,\u00a0to odpov\u00edd\u00e1 nasycen\u00ed piva 4,7 g\/l CO2 . Na v\u00fdtoku z kohoutu\u00a0 je pot\u0159eba tlak men\u0161\u00ed ne\u017e 7 kPa.\u00a0K dispozici m\u00e1me ocelovou trubi\u010dku o vnit\u0159n\u00edm pr\u016fm\u011bru 4 mm. Dopravovan\u00e1 v\u00fd\u0161ka 0,5 m.<\/p>\n

\u00a0V\u00fdpo\u010det:<\/h6>\n

Trubi\u010dka\u00a0ocel d\u00e9lky 1 m o pr\u016fm\u011bru\u00a04 mm m\u00e1 tlakovou ztr\u00e1tu\u00a0112\u00a0kPa.<\/p>\n

Pou\u017eita v\u00fdpo\u010dtov\u00e1 pom\u016fcka: \u00a0 http:\/\/vytapeni.tzb-info.cz\/tabulky-a-vypocty\/87-vypocet-tlakove-ztraty-trenim-v-potrubi <\/a><\/p>\n

Od tlaku sudu 0,6 bar<\/span> ode\u010dteme tlak na v\u00fdstupu 7 kPa = 0,07 bar<\/span>, v\u00fdsledek 0,53 bar<\/span>\u00a0zmen\u0161\u00edme o dopravovanou v\u00fd\u0161ku\u00a00,5 m tj\u00a0o 0,05 bar<\/span>, vyd\u011bl\u00edme tlakovou ztr\u00e1tou trubi\u010dky\u00a0d\u00e9lky \u00a01 m\u00a0\u00a0112 <\/span>kPa = 1,12 bar.<\/span><\/p>\n

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(0,6 – 0,07\u00a0– 0,05) \/ 1,12 = 0,43\u00a0 m<\/h3>\n

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Vypo\u010dten\u00e1 d\u00e9lka trubi\u010dky je \u00a00,43 m<\/span><\/h5>\n

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Pro trubi\u010dku o pr\u016fm\u011bru 5 mm je d\u00e9lka 1,37 m<\/p>\n

Pro trubi\u010dku o pr\u016fm\u011bru\u00a06 mm je d\u00e9lka\u00a03,7 m<\/p>\n

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Z v\u00fdpo\u010dtu je vid\u011bt, \u017ee trubi\u010dka, kterou jsem pou\u017eil, v\u00fdpo\u010dtu siln\u011b neodpov\u00edd\u00e1, co\u017e se projevilo i v praxi, nebo\u0165 jsem musel \u010depovat p\u0159es kohout jenom \u010d\u00e1ste\u010dn\u011b otev\u0159en\u00fd a to zp\u016fsobovalo v\u011bt\u0161\u00ed p\u011bn\u011bn\u00ed ne\u017e je obvykl\u00e9.<\/p>\n

Optim\u00e1ln\u00ed by bylo nahradit 6 mm trubi\u010dku trubi\u010dkou 4 mm.<\/p>\n

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