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href="https://ecfangrid.pl/category/aktualnosci/">Aktualności</a> <span class="current">Przykład (1) projektu modernizacji centrali wentylacyjnej z zastosowaniem ECFANGRID</span></div> </div> </div> </div> </div> </div> </div>  </header> <div class="factrie-content-inner"> <div class="container"> <div class="row"> <div class="col-lg-12 page-has-no-sidebar"> <div id="primary" class="content-area"> <main id="main" class="site-main single-post-template"> <article id="post-6527" class="post-6527 post type-post status-publish format-standard has-post-thumbnail hentry category-aktualnosci category-retrofit category-technologia tag-plug-fans tag-siatka-wentylatorow tag-wentylatory-modulowe"> <div class="article-inner post-items"> <div class="post-format-wrap"> <div class="post-thumb-wrap"> <img width="1280" height="649" src="https://ecfangrid.pl/wp-content/uploads/2023/06/RosenbergECFANGRID_Przyklad1.jpg" class="img-fluid wp-post-image" alt="" decoding="async" srcset="https://ecfangrid.pl/wp-content/uploads/2023/06/RosenbergECFANGRID_Przyklad1.jpg 1280w, https://ecfangrid.pl/wp-content/uploads/2023/06/RosenbergECFANGRID_Przyklad1-768x389.jpg 768w" sizes="(max-width: 1280px) 100vw, 1280px" /> </div> </div> <div class="entry-meta top-meta clearfix"> <div class="post-meta pull-left"> <ul class="nav"> <li class="nav-item"><div class="post-author"><a href="https://ecfangrid.pl/author/admin/"><span class="author-img"></span><span class="author-name">PC</span></a></div></li><li class="nav-item"><div class="post-date"><i class="before-icon icon icon-calendar"></i><a href="https://ecfangrid.pl/2023/06/28/" >2023-06-28</a></div></li><li class="nav-item"><div class="post-category"><i class="before-icon icon icon-folder-alt"></i><a href="https://ecfangrid.pl/category/aktualnosci/">Aktualności</a>,<a href="https://ecfangrid.pl/category/retrofit/">Retrofit</a>,<a href="https://ecfangrid.pl/category/technologia/">Technologia</a></div></li> </ul> </div> <div class="post-meta pull-right"> <ul class="nav"> </ul> </div> </div> <div class="entry-content"> <h2 class="wp-block-heading">Projekt</h2> <div style="height:15px" aria-hidden="true" class="wp-block-spacer"></div> <p>Do modernizacji została zaplanowana centrala wentylacyjna z nawiewem w dużym kompleksie biurowym. Celem klienta była oszczędność energii przy jednoczesnym zapewnieniu najmniejszej możliwej awaryjności systemu. Ostatnia awaria starego systemu, z silnikiem odśrodkowym, spowodowała sześciotygodniowy przestój. Szczególnie, że sytuacja miała miejsce w miesiącach letnich, powodowało to napięcia między administratorem budynku a najemcą, ze względu na brak klimatyzacji. Charakterystyka zastanej jednostki przedstawia się następująco.</p> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow" style="flex-basis:50%"> <p><strong>a) Karta techniczna urządzenia</strong></p> <figure class="wp-block-table is-style-stripes"><table><tbody><tr><td></td><td></td></tr><tr><td>Przepływ nominalny</td><td>70.000 m³/h</td></tr><tr><td>Całkowity przyrost ciśnienia</td><td>1.550 Pa</td></tr><tr><td>Moc na wale</td><td>45 kW</td></tr><tr><td>Wymiary wewnętrzne<br>(wysokość x szerokość)</td><td>2.840 mm x 2.840 mm</td></tr></tbody></table></figure> </div> <div class="wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow" style="flex-basis:50%"> <figure class="wp-block-image alignfull size-large"><img loading="lazy" decoding="async" width="993" height="694" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.6.Pierwotnie-zainstalowany-wentylator-993x694.jpg" alt="" class="wp-image-6554"/><figcaption class="wp-element-caption">[Rys. 1] Pierwotnie zainstalowany wentylator</figcaption></figure> </div> </div> <p>Po pierwsze, całkowity wzrost ciśnienia (dynamiczny + statyczny) musi zostać przekształcony we wzrost ciśnienia statycznego. Ze względu na zmniejszony przekrój wylotu, powstają duże prędkości powietrza, a ciśnienie dynamiczne osiąga wartości > 100 Pa. Tutaj, zgodnie z arkuszem danych, 140 Pa. </p> <p>Następnie należy obliczyć zużycie energii elektrycznej na podstawie mocy wału. Tylko ta wartość ma decydujące znaczenie dla kosztów energii. Jest on obliczany poprzez podzielenie mocy wału i sprawności poszczególnych komponentów (silnika, paska i przetwornicy częstotliwości).</p> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <p><strong>b) Karta techniczna jednostki dla projektu</strong></p> <figure class="wp-block-table alignfull is-style-stripes"><table><tbody><tr><td></td><td></td></tr><tr><td>Przepływ nominalny</td><td>70.000 m³/h</td></tr><tr><td>Całkowity przyrost ciśnienia</td><td>1.410 Pa</td></tr><tr><td>Elektryczna moc wejściowa</td><td>49 kW</td></tr></tbody></table></figure> <p></p> </div> <div class="wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow"> <figure class="wp-block-image alignfull size-large"><img loading="lazy" decoding="async" width="993" height="694" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.7.Centrala-wentylacyjna-do-konwersji-993x694.jpg" alt="" class="wp-image-6555"/><figcaption class="wp-element-caption">[Rys. 2] Centrala wentylacyjna do konwersji</figcaption></figure> </div> </div> <p>Ponieważ kilka identycznych systemów miało zostać zmodernizowanych, klient zdecydował się na pomiar dla pierwszego systemu. Porównanie między b) i c) ujawnia dalszy potencjał oszczędności, który jest korzystny dla nowego projektu. Podczas gdy samo użycie nieobciążonych urządzeń zapewnia najgorsze warunki do konwersji. Pomiar pokazuje, że objętość powietrza i ciśnienie statyczne są niższe niż sugerowałaby karta jednostki, pomimo uwzględnienia żywotności filtra. Pomiar przy częściowym obciążeniu przy 36 000 m³/h (60%) i ciśnieniu statycznym 385 Pa dał w rezultacie elektryczną moc wejściową 11 kW. Uwzględnienie pracy przy częściowym obciążeniu jest niezbędne do późniejszego obliczenia amortyzacji.</p> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-4 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <p><strong>c) Pomiary</strong></p> <figure class="wp-block-table alignwide is-style-stripes"><table><tbody><tr><td></td><td></td></tr><tr><td>Przepływ nominalny</td><td>60.000 m³/h</td></tr><tr><td>Całkowity przyrost ciśnienia</td><td>1.050 Pa</td></tr><tr><td>Elektryczna moc wejściowa</td><td>39 kW</td></tr></tbody></table></figure> </div> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow" style="flex-basis:100%"> <figure class="wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex"> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="468" height="694" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.8.Demontaz-starego-wentylatora-468x694.jpg" alt="" class="wp-image-6556"/><figcaption class="wp-element-caption">[Rys. 3] Demontaż starego wentylatora</figcaption></figure> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="468" height="694" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.9.Przegroda-w-istniejacej-centrali-wentylacyjnej-468x694.jpg" alt="" class="wp-image-6557"/><figcaption class="wp-element-caption">[Rys. 4] Przegroda w istniejącej centrali wentylacyjnej</figcaption></figure> </figure> </div> </div> </div> </div> <h2 class="wp-block-heading">Podsumowanie</h2> <p>Na podstawie pomiarów, ECFanGrid jest projektowany przy użyciu bezpłatnego oprogramowania RoVent10. Oferta obejmuje wszystkie niezbędne części do konwersji (wentylatory, szafa sterownicza, części blaszane, śruby, materiał montażowy) i może być rozszerzona o wyrzutnię, jeśli jest to wymagane. Ponieważ pominięto poprzednio używaną przegrodę, punkt pracy można obniżyć o 80 Pa. Najbardziej wydajną konstrukcją jest 3×3 ECFanGrid z 8 wentylatorami EC pracującymi równolegle. Nowy punkt pracy znajduje się w tabeli poniżej.</p> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-5 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <figure class="wp-block-table alignwide is-style-stripes"><table><tbody><tr><td></td><td></td></tr><tr><td>Przepływ nominalny</td><td>60.000 m³/h</td></tr><tr><td>Całkowity przyrost ciśnienia</td><td>970 Pa</td></tr><tr><td>Elektryczna moc wejściowa</td><td>25 kW</td></tr></tbody></table></figure> </div> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <figure class="wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex"> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="468" height="624" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.11.Strona-cisnieniowa-ECFanGrid.jpg" alt="" class="wp-image-6559"/><figcaption class="wp-element-caption">[Rys. 5] Strona ciśnieniowa ECFanGrid</figcaption></figure> <figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="468" height="624" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.10.Strona-ssawna-ECFanGrid.jpg" alt="" class="wp-image-6558"/><figcaption class="wp-element-caption">[Rys. 6] Strona ssawna ECFanGrid</figcaption></figure> </figure> </div> </div> <h2 class="wp-block-heading">Kalkulacja amortyzacji</h2> <p>Za pomocą danych pomiarowych i projektowych można dokonać szczegółowego obliczenia amortyzacji. Indywidualne obliczenia amortyzacji dla tego projektu można znaleźć w załączniku lub pobrać poniżej. Oprócz systemu ECFanGrid, wszystkie materiały instalacyjne i pomiar przepływu objętościowego są wliczone w cenę. Aby pokryć koszty robocizny, w obliczeniach uwzględniono zespół instalacyjny zatrudniony na dwa dni. Cena energii elektrycznej została ustalona na 0,16 € / kWh zgodnie z danymi z inwentaryzacji. Potencjalne dotacje państwowe nie zostały uwzględnione.</p> <div class="wp-block-columns is-layout-flex wp-container-core-columns-is-layout-6 wp-block-columns-is-layout-flex"> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"> <figure class="wp-block-table alignwide is-style-stripes"><table><tbody><tr><td></td><td></td></tr><tr><td>Okres zwrotu:</td><td>2,82 Roku</td></tr></tbody></table></figure> <div style="height:35px" aria-hidden="true" class="wp-block-spacer"></div> <h2 class="wp-block-heading">Rozbudowa i konwersja</h2> <p>Obudowa wentylatora odśrodkowego z napędem pasowym musi zostać zdemontowana w centrali wentylacyjnej za pomocą szlifierki kątowej, porównaj Rysunek 3. Następnie ściana grodziowa jest montowana hermetycznie zgodnie z załączoną instrukcją montażu. Znajduje się ona w załączniku lub do pobrania, patrz poniżej. Wszystkie części znajdują się w zestawie. Następnie każdy wentylator jest wkładany do ściany kolejno od góry do dołu. Na zewnątrz obudowy, szafa sterownicza jest mocowana za pomocą nakrętek. Korzystając z dołączonych kabli, kanałów kablowych i przepustów panelowych, każdy wentylator jest teraz podłączany do szafy sterowniczej. Aby móc mierzyć przepływ objętościowy, dostarczony czujnik przepływu jest podłączany do pierścieniowego przewodu pomiarowego wentylatorów. Teraz można uruchomić system. Rysunki 5, 6 i 7 przedstawiają przebudowany system ECFanGrid.</p> </div> <div class="wp-block-column is-layout-flow wp-block-column-is-layout-flow"><div class="wp-block-image"> <figure class="alignright size-full"><img loading="lazy" decoding="async" width="468" height="618" src="https://ecfangrid.pl/wp-content/uploads/2023/07/Rys.12.Szafa-sterownicza-ECFanGrid.jpg" alt="" class="wp-image-6560"/><figcaption class="wp-element-caption">[Rys. 7] Szafa sterownicza ECFanGrid</figcaption></figure></div></div> </div> <h2 class="wp-block-heading"></h2> </div> <footer class="entry-footer"> <div class="entry-meta bottom-meta clearfix"> <div class="post-meta pull-left"> <ul class="nav"> <li class="nav-item"><div class="post-tags"><i class="before-icon icon-tag"></i><a href="https://ecfangrid.pl/tag/plug-fans/">PLUG FANS</a>,<a href="https://ecfangrid.pl/tag/siatka-wentylatorow/">SIATKA WENTYLATORÓW</a>,<a href="https://ecfangrid.pl/tag/wentylatory-modulowe/">WENTYLATORY MODUŁOWE</a></div></li> 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