{"id":4330,"date":"2025-10-20T09:32:09","date_gmt":"2025-10-20T08:32:09","guid":{"rendered":"https:\/\/alkion.eu\/?p=4330"},"modified":"2025-10-29T10:16:16","modified_gmt":"2025-10-29T09:16:16","slug":"konference-stp-tesnost-vzduchotechniky-prispiva-k-dekarbonizaci-budov","status":"publish","type":"post","link":"https:\/\/alkion.eu\/cs\/konference-stp-tesnost-vzduchotechniky-prispiva-k-dekarbonizaci-budov\/","title":{"rendered":"Konference STP: T\u011bsnost vzduchotechniky p\u0159isp\u00edv\u00e1 k dekarbonizaci budov"},"content":{"rendered":"\n

Energie, kterou nevid\u00edme<\/h2>\n\n\n\n

Dekarbonizace budov pat\u0159\u00ed mezi kl\u00ed\u010dov\u00e9 priority evropsk\u00e9 energetick\u00e9 politiky. Zat\u00edmco v\u011bt\u0161ina pozornosti sm\u011b\u0159uje na ob\u00e1lku budovy, zdroje tepla nebo obnoviteln\u00e9 zdroje, \u010dasto unik\u00e1 jeden z nejv\u011bt\u0161\u00edch skryt\u00fdch zdroj\u016f ztr\u00e1t \u2013 net\u011bsnosti ve vzduchotechnick\u00fdch rozvodech. Ty zvy\u0161uj\u00ed spot\u0159ebu energie ventil\u00e1tor\u016f i pot\u0159ebu tepla a chladu pro \u00fapravu vzduchu, a t\u00edm z\u00e1sadn\u011b ovliv\u0148uj\u00ed uhl\u00edkovou stopu provozu.

Jak uv\u00e1d\u00ed \u010dl\u00e1nek prezentovan\u00fd Dalimilem Petril\u00e1kem na konferenci Klimatizace a v\u011btr\u00e1n\u00ed 2025<\/a>, \u201enet\u011bsnosti mohou zv\u00fd\u0161it spot\u0159ebu ventil\u00e1tor\u016f o des\u00edtky procent\u201c (Fisk et al., LBNL 2004). Konferenci po\u0159\u00e1d\u00e1 ka\u017ed\u00e9 dva roky Spole\u010dnost pro techniku prost\u0159ed\u00ed<\/a> a jedn\u00e1 se o presti\u017en\u00ed akci pro projektanty, in\u017een\u00fdry a odborn\u00edky na TZB budov pro v\u00fdm\u011bnu informac\u00ed z oboru a navazov\u00e1n\u00ed kontakt\u016f. Letos se konference \u00fa\u010dastnilo p\u0159es 500 expert\u016f.
Prezentovan\u00e9 v\u00fdsledky potvrzuj\u00ed i zku\u0161enosti z re\u00e1ln\u00fdch projekt\u016f Alkionu. Syst\u00e9m, kter\u00fd vykazuje \u00faniky na \u00farovni b\u011b\u017en\u00e9 t\u0159\u00eddy ATC 5 (A), m\u016f\u017ee m\u00edt ve srovn\u00e1n\u00ed s potrub\u00edm t\u0159\u00eddy ATC 2 (D) n\u011bkolikan\u00e1sobn\u011b vy\u0161\u0161\u00ed ztr\u00e1ty. Takov\u00e1 net\u011bsnost znamen\u00e1, \u017ee ventil\u00e1tor mus\u00ed trvale p\u0159ekon\u00e1vat vy\u0161\u0161\u00ed tlakov\u00e9 ztr\u00e1ty, co\u017e se prom\u00edt\u00e1 do vy\u0161\u0161\u00ed elektrick\u00e9 spot\u0159eby i opot\u0159eben\u00ed za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Kdy\u017e rozhoduj\u00ed procenta<\/h2>\n\n\n\n

Historick\u00e9 normy (\u010cSN EN 1507, 12237) rozli\u0161ovaly t\u0159\u00eddy t\u011bsnosti A\u2013D, nov\u011bj\u0161\u00ed norma \u010cSN EN 16798-3<\/a> (resp. \u010cSN EN 17192<\/a>) v\u0161ak p\u0159inesla p\u0159esn\u011bj\u0161\u00ed syst\u00e9m ATC 1\u20137. Pro lep\u0161\u00ed p\u0159edstavu:
\u2013 ATC 5 (A) odpov\u00edd\u00e1 p\u0159ibli\u017en\u011b 6 % \u00faniku vzduchu,
\u2013 ATC 3 (C) kolem 0,7 %,
\u2013 a ATC 2 (D) pouze 0,2 % objemov\u00e9ho pr\u016ftoku.

Rozd\u00edl n\u011bkolika procent tak v praxi p\u0159edstavuje v\u00edce ne\u017e devades\u00e1tiprocentn\u00ed pokles ztr\u00e1t, co\u017e potvrzuj\u00ed i v\u00fdsledky m\u011b\u0159en\u00ed UCEEB<\/a>. Pr\u00e1v\u011b tato data byla z\u00e1kladem pro v\u00fdpo\u010dtovou p\u0159\u00edpadovou studii prezentovanou v r\u00e1mci konference.<\/p>\n\n\n\n

\n

St\u00e1hn\u011bte si cel\u00fd odborn\u00fd \u010dl\u00e1nek<\/a>.<\/p>\n<\/blockquote>\n\n\n\n

V\u00fdsledky m\u011b\u0159en\u00ed UCEEB: od teorie k praxi<\/h2>\n\n\n\n

V r\u00e1mci spole\u010dn\u00e9ho projektu Alkion \u2013 \u010cVUT UCEEB prob\u011bhlo v roce 2024 m\u011b\u0159en\u00ed t\u011bsnosti vzduchotechnick\u00e9ho potrub\u00ed p\u0159ed a po aplikaci technologie Aeroseal. Zku\u0161ebn\u00ed s\u00ed\u0165 vykazovala p\u0159ed ut\u011bsn\u011bn\u00edm t\u0159\u00eddu ATC 5 (A), po aplikaci Aerosealu dos\u00e1hla hodnot ATC 2 a\u017e ATC 3 (t\u0159\u00eddy D a C). Podle z\u00e1v\u011bre\u010dn\u00e9 zpr\u00e1vy UCEEB klesla net\u011bsnost o 92 a\u017e 96 %, p\u0159i\u010dem\u017e u pracovn\u00edho tlaku 400 Pa dos\u00e1hlo potrub\u00ed nejvy\u0161\u0161\u00edho zlep\u0161en\u00ed.
PIV anemometrie nav\u00edc uk\u00e1zala, \u017ee k \u00fapln\u00e9mu ut\u011bsn\u011bn\u00ed otvoru o pr\u016fm\u011bru 4 mm doch\u00e1z\u00ed b\u011bhem n\u011bkolika minut \u2013 proces je tedy nejen \u00fa\u010dinn\u00fd, ale i rychl\u00fd.<\/p>\n\n\n\n

\"\"
Sn\u00edmek z PIV anemometrie – UCEEB.<\/figcaption><\/figure>\n\n\n\n

Modelov\u00fd objekt: \u00faspory v \u0159\u00e1du des\u00edtek megawatthodin<\/h2>\n\n\n\n

Na z\u00e1klad\u011b t\u011bchto v\u00fdsledk\u016f zpracovalo UCEEB<\/a> v\u00fdpo\u010dtovou p\u0159\u00edpadovou studii velkoprostorov\u00e9 prodejny s n\u00e1vrhov\u00fdm pr\u016ftokem 54 680 m\u00b3\/h.
V\u00fdchoz\u00ed net\u011bsnost odpov\u00eddala p\u0159ibli\u017en\u011b 11 % objemov\u00e9ho pr\u016ftoku (t\u0159\u00edda ATC 6 \/ 2,5A), po ut\u011bsn\u011bn\u00ed klesla na 1 % (t\u0159\u00edda ATC 2 \/ C).
Dispozi\u010dn\u00ed tlak ventil\u00e1toru se sn\u00ed\u017eil z 421 Pa na 345 Pa a p\u0159\u00edkon z 19,4 kW na 13,8 kW. P\u0159i b\u011b\u017en\u00e9 otev\u00edrac\u00ed dob\u011b 14 hodin denn\u011b to p\u0159edstavuje \u00fasporu 28,6 MWh ro\u010dn\u011b, tedy v\u00edce ne\u017e 28 000 kWh elektrick\u00e9 energie u jedin\u00e9ho syst\u00e9mu. U provoz\u016f s nep\u0159etr\u017eit\u00fdm chodem by ro\u010dn\u00ed \u00faspora dos\u00e1hla t\u00e9m\u011b\u0159 50 MWh.<\/p>\n\n\n\n

Praktick\u00e9 dopady a doporu\u010den\u00ed<\/h2>\n\n\n\n

Zlep\u0161en\u00ed t\u011bsnosti se neprojevuje jen v energetick\u00e9 bilanci. Zat\u011bsn\u011bn\u00e9 syst\u00e9my zaji\u0161\u0165uj\u00ed stabiln\u011bj\u0161\u00ed tlakov\u00e9 pom\u011bry, rovnom\u011brn\u011bj\u0161\u00ed p\u0159\u00edvod vzduchu do koncov\u00fdch z\u00f3n a ni\u017e\u0161\u00ed hlu\u010dnost. Z praxe v\u00edme, \u017ee po aplikaci Aerosealu se m\u011bn\u00ed i chov\u00e1n\u00ed regula\u010dn\u00edch prvk\u016f \u2013 syst\u00e9my s VAV klapkami pracuj\u00ed plynuleji a l\u00e9pe reaguj\u00ed na \u0159\u00edzen\u00ed podle skute\u010dn\u00fdch pot\u0159eb.

Pro projektanty a provozovatele z toho plyne jednozna\u010dn\u00e9 doporu\u010den\u00ed: m\u011b\u0159it t\u011bsnost podle \u010cSN EN 12599<\/a> (V\u011btr\u00e1n\u00ed budov \u2013 Zku\u0161ebn\u00ed postupy a metody m\u011b\u0159en\u00ed pro p\u0159ed\u00e1v\u00e1n\u00ed v\u011btrac\u00edch a klimatiza\u010dn\u00edch za\u0159\u00edzen\u00ed), vyhodnocovat skute\u010dn\u00e9 \u00faniky a c\u00edlit na t\u0159\u00eddy ATC 2 a\u017e ATC 3 (t\u0159\u00eddy D a C).
Tyto hodnoty odpov\u00eddaj\u00ed \u00fanik\u016fm maxim\u00e1ln\u011b jednoho procenta objemov\u00e9ho pr\u016ftoku, co\u017e je dnes dosa\u017eiteln\u00e9 i u st\u00e1vaj\u00edc\u00edch syst\u00e9m\u016f bez nutnosti stavebn\u00edch z\u00e1sah\u016f.<\/p>\n\n\n\n

\"\"
Vyu\u017eit\u00ed technologie Aeroseal b\u011bhem experimentu na UCEEB-\u010cVUT.<\/figcaption><\/figure>\n\n\n\n

Aeroseal jako n\u00e1stroj dekarbonizace<\/h2>\n\n\n\n

Z\u00e1v\u011bry \u010dl\u00e1nku publikovan\u00e9ho ve sborn\u00edku STP potvrzuj\u00ed, \u017ee modern\u00ed metoda intern\u00edho t\u011bsn\u011bn\u00ed potrub\u00ed je \u00fa\u010dinn\u00fdm n\u00e1strojem dekarbonizace budov. Omezen\u00edm ztr\u00e1t vzduchu se sni\u017euje nejen spot\u0159eba ventil\u00e1tor\u016f, ale i energetick\u00e9 n\u00e1roky na oh\u0159ev a chlazen\u00ed vzduchu. V sou\u010dtu to p\u0159edstavuje des\u00edtky megawatthodin \u00faspor ro\u010dn\u011b a citeln\u00fd pokles emis\u00ed CO\u2082.

Jak zazn\u011blo v p\u0159\u00edsp\u011bvku na konferenci:<\/p>\n\n\n\n

\n

T\u011bsnost vzduchotechnick\u00fdch rozvod\u016f je oblast, kter\u00e1 byla dlouho p\u0159ehl\u00ed\u017eena, p\u0159esto\u017ee m\u00e1 p\u0159\u00edm\u00fd vliv na energetickou bilanci budov. Modern\u00ed technologie dnes umo\u017e\u0148uj\u00ed sn\u00ed\u017eit \u00faniky o v\u00edce ne\u017e 90 % a dos\u00e1hnout \u00faspor energie v \u0159\u00e1du des\u00edtek MWh ro\u010dn\u011b.<\/p>\n<\/blockquote>\n\n\n\n

Z\u00e1v\u011br<\/h2>\n\n\n\n

T\u011bsnost vzduchotechniky je v\u00edc ne\u017e detail \u2013 je to parametr, kter\u00fd rozhoduje o tom, zda budova skute\u010dn\u011b spl\u0148uje sv\u016fj energetick\u00fd a ekologick\u00fd potenci\u00e1l. Technologie Aeroseal<\/a> p\u0159in\u00e1\u0161\u00ed investor\u016fm i projektant\u016fm praktickou cestu, jak dos\u00e1hnout vy\u0161\u0161\u00edch t\u0159\u00edd t\u011bsnosti, stabiln\u011bj\u0161\u00edho provozu a rychl\u00e9 n\u00e1vratnosti investice. Pro dekarbonizaci budov tak p\u0159edstavuje jeden z nejefektivn\u011bj\u0161\u00edch a nejm\u00e9n\u011b invazivn\u00edch krok\u016f, kter\u00e9 lze dnes realizovat.<\/p>\n\n\n\n

\n

P\u0159e\u010dt\u011bte si cel\u00fd odborn\u00fd \u010dl\u00e1nek<\/a>.<\/p>\n<\/blockquote>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Energie, kterou nevid\u00edme Dekarbonizace budov pat\u0159\u00ed mezi kl\u00ed\u010dov\u00e9 priority evropsk\u00e9 energetick\u00e9 politiky. Zat\u00edmco v\u011bt\u0161ina pozornosti sm\u011b\u0159uje na ob\u00e1lku budovy, zdroje tepla nebo obnoviteln\u00e9 zdroje, \u010dasto unik\u00e1 jeden z nejv\u011bt\u0161\u00edch skryt\u00fdch zdroj\u016f ztr\u00e1t \u2013 net\u011bsnosti ve vzduchotechnick\u00fdch rozvodech. Ty zvy\u0161uj\u00ed spot\u0159ebu energie ventil\u00e1tor\u016f i pot\u0159ebu tepla a chladu pro \u00fapravu vzduchu, a t\u00edm z\u00e1sadn\u011b ovliv\u0148uj\u00ed uhl\u00edkovou stopu provozu. Jak uv\u00e1d\u00ed […]<\/p>\n","protected":false},"author":3,"featured_media":4337,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-4330","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aktuality"],"acf":[],"yoast_head":"\nKonference STP: T\u011bsnost vzduchotechniky p\u0159isp\u00edv\u00e1 k dekarbonizaci budov - Alkion<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alkion.eu\/cs\/konference-stp-tesnost-vzduchotechniky-prispiva-k-dekarbonizaci-budov\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Konference STP: T\u011bsnost vzduchotechniky p\u0159isp\u00edv\u00e1 k dekarbonizaci budov - Alkion\" \/>\n<meta property=\"og:description\" content=\"Energie, kterou nevid\u00edme Dekarbonizace budov pat\u0159\u00ed mezi kl\u00ed\u010dov\u00e9 priority evropsk\u00e9 energetick\u00e9 politiky. 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