{"id":3852,"date":"2024-11-22T08:29:11","date_gmt":"2024-11-22T08:29:11","guid":{"rendered":"https:\/\/regenerative-thermal-oxidizers.com\/rto-with-heat-recovery-energy-efficiency\/"},"modified":"2024-11-22T08:29:11","modified_gmt":"2024-11-22T08:29:11","slug":"rto-with-heat-recovery-energy-efficiency","status":"publish","type":"post","link":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/rto-with-heat-recovery-energy-efficiency\/","title":{"rendered":"RTO s energetickou \u00fa\u010dinnost\u00ed rekuperace tepla"},"content":{"rendered":"

RTO s energetickou \u00fa\u010dinnost\u00ed rekuperace tepla<\/h1>\n

V tomto blogov\u00e9m p\u0159\u00edsp\u011bvku se budeme zab\u00fdvat t\u00e9matem RTO s rekuperac\u00ed tepla<\/a> Energetick\u00e1 \u00fa\u010dinnost do hloubky. RTO, co\u017e je zkratka pro Regenerative Thermal Oxidator (regenerativn\u00ed term\u00e1ln\u00ed oxid\u00e1tor), je v pr\u016fmyslu \u0161iroce pou\u017e\u00edvan\u00e1 technologie pro kontrolu zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed a sni\u017eov\u00e1n\u00ed emis\u00ed t\u011bkav\u00fdch organick\u00fdch slou\u010denin (VOC). Za\u010dlen\u011bn\u00edm syst\u00e9m\u016f pro rekuperaci tepla do RTO lze v\u00fdrazn\u011b zv\u00fd\u0161it energetickou \u00fa\u010dinnost, co\u017e vede k v\u00fdznamn\u00fdm \u00faspor\u00e1m n\u00e1klad\u016f a p\u0159\u00ednos\u016fm pro \u017eivotn\u00ed prost\u0159ed\u00ed.<\/p>\n

1. \u00davod do RTO s rekuperac\u00ed tepla<\/h2>\n

Regenerativn\u00ed termick\u00e9 oxid\u00e1tory (RTO) jsou syst\u00e9my pro tepeln\u00e9 odstra\u0148ov\u00e1n\u00ed emis\u00ed, kter\u00e9 vyu\u017e\u00edvaj\u00ed vysok\u00e9 teploty k p\u0159em\u011bn\u011b \u0161kodliv\u00fdch zne\u010di\u0161\u0165uj\u00edc\u00edch l\u00e1tek na ne\u0161kodn\u00e9 vedlej\u0161\u00ed produkty prost\u0159ednictv\u00edm procesu oxidace. Integrac\u00ed syst\u00e9m\u016f pro rekuperaci tepla mohou RTO zachycovat a znovu vyu\u017e\u00edvat p\u0159ebyte\u010dn\u00e9 teplo generovan\u00e9 b\u011bhem oxida\u010dn\u00edho procesu, co\u017e vede ke zlep\u0161en\u00ed energetick\u00e9 \u00fa\u010dinnosti.<\/p>\n

2. Princip \u010dinnosti<\/h2>\n

J\u00e1drem tepeln\u00e9ho \u010derpadla s rekuperac\u00ed tepla (RTO) je regener\u00e1tor, kter\u00fd je zodpov\u011bdn\u00fd za zachycov\u00e1n\u00ed a ukl\u00e1d\u00e1n\u00ed tepeln\u00e9 energie. Kdy\u017e v\u00fdfukov\u00e9 plyny proch\u00e1zej\u00ed jedn\u00edm regener\u00e1torem, uvol\u0148uj\u00ed svou tepelnou energii a p\u0159edeh\u0159\u00edvaj\u00ed vstupuj\u00edc\u00ed plyn s obsahem zne\u010di\u0161\u0165uj\u00edc\u00edch l\u00e1tek. Tento p\u0159edeh\u0159\u00e1t\u00fd plyn pot\u00e9 vstupuje do dal\u0161\u00edho regener\u00e1toru, kde se d\u00e1le oh\u0159\u00edv\u00e1, ne\u017e vstoup\u00ed do spalovac\u00ed komory k oxidaci. Proces je cyklick\u00fd, p\u0159i\u010dem\u017e regener\u00e1tory st\u0159\u00eddaj\u00ed sv\u00e9 role, aby byla zaji\u0161t\u011bna nep\u0159etr\u017eit\u00e1 rekuperace energie.<\/p>\n

3. V\u00fdhody rekuperace tepla v za\u0159\u00edzen\u00edch RTO<\/h2>\n

Za\u010dlen\u011bn\u00ed syst\u00e9m\u016f rekuperace tepla do za\u0159\u00edzen\u00ed RTO nab\u00edz\u00ed n\u011bkolik v\u00fdhod:<\/p>\n

    \n
  • Zv\u00fd\u0161en\u00e1 energetick\u00e1 \u00fa\u010dinnost: Vyu\u017eit\u00edm zachycen\u00e9ho tepla mohou RTO se syst\u00e9my rekuperace tepla dos\u00e1hnout vy\u0161\u0161\u00ed tepeln\u00e9 \u00fa\u010dinnosti a sn\u00ed\u017eit tak celkovou spot\u0159ebu energie.<\/li>\n
  • \u00daspora n\u00e1klad\u016f: Z\u00edsk\u00e1n\u00e9 teplo m\u016f\u017ee kompenzovat pot\u0159ebu dodate\u010dn\u00e9 spot\u0159eby paliva, co\u017e m\u00e1 za n\u00e1sledek v\u00fdznamn\u00e9 \u00faspory n\u00e1klad\u016f pro provozovatele.<\/li>\n
  • Sn\u00ed\u017een\u00fd dopad na \u017eivotn\u00ed prost\u0159ed\u00ed: Zv\u00fd\u0161en\u00e1 energetick\u00e1 \u00fa\u010dinnost vede ke sn\u00ed\u017een\u00ed uhl\u00edkov\u00e9 stopy a p\u0159isp\u00edv\u00e1 k iniciativ\u00e1m v oblasti udr\u017eitelnosti.<\/li>\n<\/ul>\n

    4. Konstruk\u010dn\u00ed aspekty<\/h2>\n

    P\u0159i n\u00e1vrhu RTO s rekuperac\u00ed tepla je t\u0159eba vz\u00edt v \u00favahu n\u011bkolik faktor\u016f:<\/p>\n

      \n
    • V\u00fdb\u011br m\u00e9dia pro v\u00fdm\u011bnu tepla: V\u00fdb\u011br m\u00e9dia pro v\u00fdm\u011bnu tepla, jako je keramika nebo kovy, ovliv\u0148uje \u00fa\u010dinnost a trvanlivost syst\u00e9mu.<\/li>\n
    • Mechanismy regulace pr\u016ftoku: Spr\u00e1vn\u00e1 regulace pr\u016ftoku plynu a p\u0159ep\u00edn\u00e1n\u00ed mezi regener\u00e1tory je z\u00e1sadn\u00ed pro udr\u017een\u00ed optim\u00e1ln\u00ed rekuperace tepla.<\/li>\n
    • Izolace: \u00da\u010dinn\u00e1 izolace minimalizuje tepeln\u00e9 ztr\u00e1ty a zaji\u0161\u0165uje maxim\u00e1ln\u00ed vyu\u017eit\u00ed rekuperovan\u00e9 energie.<\/li>\n<\/ul>\n

      \"RTO<\/p>\n

      5. Aplikace RTO s rekuperac\u00ed tepla<\/h2>\n

      RTO s rekuperac\u00ed tepla nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch, v\u010detn\u011b:<\/p>\n

        \n
      • Chemick\u00e1 v\u00fdroba: RTO se pou\u017e\u00edvaj\u00ed ke kontrole a sni\u017eov\u00e1n\u00ed emis\u00ed t\u011bkav\u00fdch organick\u00fdch slou\u010denin (VOC) b\u011bhem chemick\u00fdch proces\u016f.<\/li>\n
      • Barvy a n\u00e1t\u011bry: Procesy vytvrzov\u00e1n\u00ed a schnut\u00ed v pr\u016fmyslu barev \u010dasto vy\u017eaduj\u00ed certifikaci RTO (Resident Technical Tools - certifikace pro testov\u00e1n\u00ed), aby byl zaji\u0161t\u011bn soulad s environment\u00e1ln\u00edmi p\u0159edpisy.<\/li>\n
      • Tisk a balen\u00ed: RTO se pou\u017e\u00edvaj\u00ed k \u010di\u0161t\u011bn\u00ed v\u00fdfukov\u00fdch plyn\u016f vznikaj\u00edc\u00edch b\u011bhem tisku a balen\u00ed.<\/li>\n<\/ul>\n

        6. \u00dadr\u017eba a optimalizace<\/h2>\n

        Spr\u00e1vn\u00e1 \u00fadr\u017eba a optimalizace jsou kl\u00ed\u010dov\u00e9 pro zaji\u0161t\u011bn\u00ed dlouhodob\u00e9ho v\u00fdkonu a energetick\u00e9 \u00fa\u010dinnosti za\u0159\u00edzen\u00ed RTO s rekuperac\u00ed tepla:<\/p>\n

          \n
        • Pravideln\u00e9 kontroly: Pravideln\u00e9 kontroly pom\u00e1haj\u00ed identifikovat jak\u00e9koli potenci\u00e1ln\u00ed probl\u00e9my nebo sn\u00ed\u017een\u00ed v\u00fdkonu.<\/li>\n
        • \u010ci\u0161t\u011bn\u00ed a v\u00fdm\u011bna: \u010ci\u0161t\u011bn\u00ed teplosm\u011bnn\u00fdch m\u00e9di\u00ed a v\u010dasn\u00e1 v\u00fdm\u011bna po\u0161kozen\u00fdch sou\u010d\u00e1st\u00ed udr\u017euj\u00ed optim\u00e1ln\u00ed \u00fa\u010dinnost p\u0159enosu tepla.<\/li>\n
        • Monitorov\u00e1n\u00ed procesu: Neust\u00e1l\u00e9 monitorov\u00e1n\u00ed procesn\u00edch parametr\u016f umo\u017e\u0148uje \u00fapravy a optimalizaci pro maximalizaci energetick\u00e9 rekuperace.<\/li>\n<\/ul>\n

          7. Budouc\u00ed v\u00fdvoj a inovace<\/h2>\n

          Oblast RTO s rekuperac\u00ed tepla se neust\u00e1le vyv\u00edj\u00ed a prob\u00edhaj\u00edc\u00ed v\u00fdzkum a v\u00fdvoj se zam\u011b\u0159uj\u00ed na:<\/p>\n

            \n
          • Nov\u00e9 materi\u00e1ly pro v\u00fdm\u011bnu tepla: Pro zlep\u0161en\u00ed rekuperace energie se zkoumaj\u00ed nov\u00e9 materi\u00e1ly se zlep\u0161en\u00fdmi vlastnostmi p\u0159enosu tepla.<\/li>\n
          • Pokro\u010dil\u00e9 \u0159\u00edzen\u00ed a automatizace: Inteligentn\u00ed \u0159\u00eddic\u00ed syst\u00e9my umo\u017e\u0148uj\u00ed optimalizaci v re\u00e1ln\u00e9m \u010dase a lep\u0161\u00ed hospoda\u0159en\u00ed s energi\u00ed.<\/li>\n
          • Integrovan\u00e1 \u0159e\u0161en\u00ed: Integrace RTO s dal\u0161\u00edmi energeticky \u00fasporn\u00fdmi technologiemi nab\u00edz\u00ed komplexn\u00ed a udr\u017eiteln\u00e1 \u0159e\u0161en\u00ed.<\/li>\n<\/ul>\n

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

            Energetick\u00e1 \u00fa\u010dinnost za\u0159\u00edzen\u00ed RTO s rekuperac\u00ed tepla hraje kl\u00ed\u010dovou roli ve zm\u00edr\u0148ov\u00e1n\u00ed zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed a sni\u017eov\u00e1n\u00ed spot\u0159eby energie v pr\u016fmyslov\u00fdch procesech. Maximalizac\u00ed rekuperace tepla a optimalizac\u00ed v\u00fdkonu syst\u00e9mu p\u0159isp\u00edvaj\u00ed za\u0159\u00edzen\u00ed RTO s rekuperac\u00ed tepla k udr\u017eiteln\u011bj\u0161\u00ed a ekologi\u010dt\u011bj\u0161\u00ed budoucnosti.<\/p>\n

            \n

            Jsme p\u0159edn\u00ed high-tech podnik specializuj\u00edc\u00ed se na zpracov\u00e1n\u00ed odpadn\u00edch plyn\u016f s t\u011bkav\u00fdmi organick\u00fdmi slou\u010deninami (VOC) a sni\u017eov\u00e1n\u00ed emis\u00ed uhl\u00edku a na technologie \u00faspory energie pro v\u00fdrobu \u0161pi\u010dkov\u00fdch za\u0159\u00edzen\u00ed.<\/h2>\n

            Na\u0161e spole\u010dnost se v\u011bnuje poskytov\u00e1n\u00ed komplexn\u00edch \u0159e\u0161en\u00ed pro zpracov\u00e1n\u00ed odpadn\u00edch plyn\u016f s t\u011bkav\u00fdmi organick\u00fdmi slou\u010deninami (VOC) a zav\u00e1d\u011bn\u00ed technologi\u00ed pro sni\u017eov\u00e1n\u00ed emis\u00ed uhl\u00edku a \u00fasporu energie v oblasti v\u00fdroby \u0161pi\u010dkov\u00fdch za\u0159\u00edzen\u00ed. S t\u00fdmem v\u00edce ne\u017e 60 technik\u016f v\u00fdzkumu a v\u00fdvoje, v\u010detn\u011b 3 vedouc\u00edch in\u017een\u00fdr\u016f na \u00farovni v\u00fdzkumn\u00edk\u016f a 16 vedouc\u00edch in\u017een\u00fdr\u016f, jsme se v t\u00e9to oblasti etablovali jako experti.<\/p>\n

            Mezi kl\u00ed\u010dov\u00e9 technologie na\u0161\u00ed spole\u010dnosti pat\u0159\u00ed tepeln\u00e1 energie, spalov\u00e1n\u00ed, t\u011bsn\u011bn\u00ed a automatick\u00e9 \u0159\u00edzen\u00ed. D\u00edky na\u0161im pokro\u010dil\u00fdm simula\u010dn\u00edm mo\u017enostem dok\u00e1\u017eeme p\u0159esn\u011b modelovat teplotn\u00ed pole a proud\u011bn\u00ed vzduchu, co\u017e n\u00e1m umo\u017e\u0148uje optimalizovat na\u0161e \u0159e\u0161en\u00ed. Na\u0161e laboratorn\u00ed za\u0159\u00edzen\u00ed zahrnuj\u00ed:<\/p>\n

              \n
            • Zku\u0161ebn\u00ed stolice pro vysoce \u00fa\u010dinnou technologii regulace spalov\u00e1n\u00ed:<\/strong> Tato zku\u0161ebn\u00ed stolice n\u00e1m umo\u017e\u0148uje vyv\u00edjet a testovat pokro\u010dil\u00e9 technologie \u0159\u00edzen\u00ed spalov\u00e1n\u00ed pro dosa\u017een\u00ed optim\u00e1ln\u00edho v\u00fdkonu a energetick\u00e9 \u00fa\u010dinnosti.<\/li>\n
            • Zku\u0161ebn\u00ed stolice pro \u00fa\u010dinnost adsorpce molekul\u00e1rn\u00edm s\u00edtem:<\/strong> S touto zku\u0161ebn\u00ed stolic\u00ed m\u016f\u017eeme vyhodnotit a vybrat nej\u00fa\u010dinn\u011bj\u0161\u00ed materi\u00e1ly pro adsorpci molekul\u00e1rn\u00edch s\u00edt pro \u010di\u0161t\u011bn\u00ed odpadn\u00edch plyn\u016f od VOC.<\/li>\n
            • Vysoce \u00fa\u010dinn\u00e1 zku\u0161ebn\u00ed lavice pro keramickou technologii akumulace tepla:<\/strong> Tato zku\u0161ebn\u00ed stolice n\u00e1m umo\u017e\u0148uje zkoumat a vyv\u00edjet \u00fa\u010dinn\u00e9 keramick\u00e9 materi\u00e1ly pro akumulaci tepla pro rekuperaci energie ve vysokoteplotn\u00edch aplikac\u00edch.<\/li>\n
            • Zku\u0161ebn\u00ed stolice pro rekuperaci odpadn\u00edho tepla pro ultra vysok\u00e9 teploty:<\/strong> S touto zku\u0161ebn\u00ed stolic\u00ed m\u016f\u017eeme experimentovat a optimalizovat rekuperaci odpadn\u00edho tepla p\u0159i ultravysok\u00fdch teplot\u00e1ch, co\u017e p\u0159isp\u00edv\u00e1 k \u00faspo\u0159e energie.<\/li>\n
            • Zku\u0161ebn\u00ed stolice pro t\u011bsnic\u00ed technologie plynn\u00fdch kapalin:<\/strong> Tato zku\u0161ebn\u00ed stolice n\u00e1m umo\u017e\u0148uje vyv\u00edjet a testovat pokro\u010dil\u00e9 technologie t\u011bsn\u011bn\u00ed pro plynn\u00e9 kapaliny, kter\u00e9 zaji\u0161\u0165uj\u00ed \u00fa\u010dinn\u00e9 zadr\u017eov\u00e1n\u00ed a zabra\u0148uj\u00ed \u00fanik\u016fm.<\/li>\n<\/ul>\n

              \"Platformy<\/p>\n

              Jako uzn\u00e1n\u00ed na\u0161eho \u00fasil\u00ed o inovace a excelenci jsme z\u00edskali celkem 68 patent\u016f souvisej\u00edc\u00edch s na\u0161imi kl\u00ed\u010dov\u00fdmi technologiemi, v\u010detn\u011b 21 patent\u016f na vyn\u00e1lezy, 41 patent\u016f na u\u017eitn\u00e9 vzory, 6 patent\u016f na pr\u016fmyslov\u00e9 vzory a 7 autorsk\u00fdch pr\u00e1v k softwaru.<\/p>\n

              \"Vyznamen\u00e1n\u00ed<\/p>\n

              Na\u0161e v\u00fdrobn\u00ed kapacity zahrnuj\u00ed automatizovan\u00e9 trysk\u00e1n\u00ed a lakov\u00e1n\u00ed ocelov\u00fdch plech\u016f a profil\u016f, ru\u010dn\u00ed trysk\u00e1n\u00ed, za\u0159\u00edzen\u00ed pro odpra\u0161ov\u00e1n\u00ed a ochranu \u017eivotn\u00edho prost\u0159ed\u00ed, automatizovan\u00e9 lakovac\u00ed kabiny a su\u0161\u00e1rny. Tato za\u0159\u00edzen\u00ed n\u00e1m umo\u017e\u0148uj\u00ed efektivn\u011b vyr\u00e1b\u011bt vysoce kvalitn\u00ed produkty.<\/p>\n

              \"V\u00fdrobn\u00ed<\/p>\n

              Zveme na\u0161e z\u00e1kazn\u00edky ke spolupr\u00e1ci a k \u200b\u200bvyu\u017eit\u00ed na\u0161ich v\u00fdhod:<\/p>\n

                \n
              • Pokro\u010dil\u00e9 technologie:<\/strong> Na\u0161e odborn\u00e9 znalosti v oblasti \u010di\u0161t\u011bn\u00ed odpadn\u00edch plyn\u016f z VOC a technologi\u00ed pro sni\u017eov\u00e1n\u00ed emis\u00ed uhl\u00edku zaji\u0161\u0165uj\u00ed efektivn\u00ed a udr\u017eiteln\u00e1 \u0159e\u0161en\u00ed.<\/li>\n
              • Komplexn\u00ed \u0159e\u0161en\u00ed:<\/strong> Nab\u00edz\u00edme \u0159adu produkt\u016f a slu\u017eeb, kter\u00e9 uspokojuj\u00ed rozmanit\u00e9 pot\u0159eby z\u00e1kazn\u00edk\u016f, a poskytujeme komplexn\u00ed \u0159e\u0161en\u00ed.<\/li>\n
              • Zku\u0161enosti v oboru:<\/strong> D\u00edky dlouholet\u00fdm zku\u0161enostem s v\u00fdrobou \u0161pi\u010dkov\u00fdch za\u0159\u00edzen\u00ed rozum\u00edme jedine\u010dn\u00fdm v\u00fdzv\u00e1m a po\u017eadavk\u016fm na\u0161ich z\u00e1kazn\u00edk\u016f.<\/li>\n
              • Zaji\u0161t\u011bn\u00ed kvality:<\/strong> N\u00e1\u0161 z\u00e1vazek ke kvalit\u011b se odr\u00e1\u017e\u00ed v na\u0161ich p\u0159\u00edsn\u00fdch procesech kontroly kvality, kter\u00e9 zaji\u0161\u0165uj\u00ed spolehliv\u00e9 a trvanliv\u00e9 produkty.<\/li>\n
              • Odpov\u011bdnost za \u017eivotn\u00ed prost\u0159ed\u00ed:<\/strong> Zam\u011b\u0159ujeme se na ochranu \u017eivotn\u00edho prost\u0159ed\u00ed a sni\u017eov\u00e1n\u00ed emis\u00ed uhl\u00edku prost\u0159ednictv\u00edm na\u0161ich inovativn\u00edch technologi\u00ed.<\/li>\n
              • Spokojenost z\u00e1kazn\u00edk\u016f:<\/strong> Prioritou je spokojenost z\u00e1kazn\u00edk\u016f a usilujeme o budov\u00e1n\u00ed dlouhodob\u00fdch partnerstv\u00ed zalo\u017een\u00fdch na vz\u00e1jemn\u00e9 d\u016fv\u011b\u0159e a \u00fasp\u011bchu.<\/li>\n<\/ul>\n

                \"V\u00fdhody<\/p>\n

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

                RTO with heat recovery energy efficiency In this blog post, we will explore the topic of RTO with heat recovery energy efficiency in depth. RTO, which stands for Regenerative Thermal Oxidizer, is a widely used technology in industries for air pollution control and volatile organic compound (VOC) abatement. By incorporating heat recovery systems into RTOs, […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[40],"tags":[41],"class_list":["post-3852","post","type-post","status-publish","format-standard","hentry","category-rto-with-heat-recovery-blog","tag-rto-with-heat-recoveryrto-gas-treatmentlrto-thermal-oxidizerregenerative-thermal-oxidizer"],"_links":{"self":[{"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/posts\/3852","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/comments?post=3852"}],"version-history":[{"count":0,"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/posts\/3852\/revisions"}],"wp:attachment":[{"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/media?parent=3852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/categories?post=3852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/regenerative-thermal-oxidizers.com\/cs\/wp-json\/wp\/v2\/tags?post=3852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}