kormos yacht service

Field test: PV Modules

A real world comparison between Mono, Poly, PERC and Dual PV Modules.

* This is a field test and the results are specific for this installation on this location please research which is the best solution for your own situation as the results can be different based on environmental influences.

Total solar yield as of 27/03/2023 when the results were reset: Mono: 9158 kWh Split-cell: 9511 kWh Poly: 9113 kWh Perc: 9471 kWh Perc-east: 1970 kWh Perc-west: 1730 kWh

Silent cruising

Classic launch gets electric propulsion.

Users stories

Is it possible to improve a classic Petterson ‘Gentleman’s Launch’ built in Sweden in 1938?

It seems it is.

As part of the restoration of one example of these craft, new owner Zsolt Szabó has fitted her with a state of the art electric motor and a lithium battery bank which allows her to glide silently over the regulated waters of Lake Balaton where navigation is only allowed by non-polluting craft.

At the time of purchase the seven-metre launch was fitted with an old 43kW Blade 4900 diesel engine. The shaft was out of alignment causing excessive noise and vibration, and the discomfort was exacerbated by engine fumes.

Electric Propulsion

The new electric propulsion unit is a Krautler WAd 15kW 48V 370A which weighs just 76kg and is capable of propelling a craft of up to six tons displacement.

The main contractor for the project was Budapest-based yacht broker and electric boat specialist Power and Sail working in partner ship with boatbuilders Kormos Yacht Service who repaired the woodwork and made new fittings around the engine bay. The electric propulsion system was installed by Sturm und Drang.

Power Train

The MultiPlus-II 48/3000 Inverter/Charger has been installed to allow the use of domestic appliances on board and also provides battery charging from AC shore power. Berthed at her usual marina there is a 16A power supply – whilst elsewhere on the lake, shore power is limited to 6A. Those varying limitations present no problems for the MultiPlus II – the settings of which can easily be changed to limit the current drawn from the shore supply, avoiding annoying fuse-tripping.

More than that, if an on-board device is turned on which draws more than 6A whilst connected to shore power, the MultiPlus II will automatically provide the power shortfall straight from the battery bank, allowing the owner to enjoy using whatever appliances he has on board.

When the power hungry device is turned off, battery charging resumes using all available power up to 6A …or 16A …or indeed up to 35A – which is the maximum battery-charging current for the chosen model.

Battery charging is controlled using a Lynx Smart BMS – a battery management system specifically for Victron lithium batteries. The BMS is part of the Lynx Distributor system of components based around fused busbars offering modular extension …making for really tidy installations.

An Orion Tr 48/12 DC-DC converter, and an Orion Tr 12/24 DC-DC have been fitted. The Orion devices installed on board operate as power supplies which allow navigational equipment rated at 12V, and at 24V to be run straight from the 48V battery installation.

In combustion engined installations Orion devices are often employed as battery chargers to protect the alternator from overload – but here they are used to provide a constant voltage to navigation equipment – regardless of the load placed on the battery bank.

The Orion supply voltage is user-configurable between 10V and 15V – for the 12V output models and between 20V and 30V – for the 24V output models.

Power and Sail’s manager Tamás Lőrincze says his company has been involved with the renovation and electric-conversion of around 60 propulsion systems. Our main marine market is lake Balaton where regulation allows navigation only by electric propulsion, wind, or by hand. There are many, many boats on the lake that basically run on 100% Victron systems. Tamás suggests we run a series of blogs under the heading Victron boats of Balaton!

Power and Sail will soon be carrying out an electric conversion for a motorboat measuring over 40ft on deck.

You can explore more marine energy applications of all sizes in the Victron Marine Brochure.

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Werft Portrait Kormos S.A.

Preisspanne

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Új vagy régi hajók ozmózis védelme
Hajók aljának előkészítése
Ozmózis által károsodott hajók javítása
Állapot felmérés

Ozmózis a folyadékok diffúziója az anyagok porózus részecskéin keresztül.

Ez az üvegszál erősítésű vízi járműveken is előfordul, ami veszélyt jelent a számukra, mert a víz áthatolva a gél köpenyen károsítja a laminátot, ami súlynövekedést és savas erjedést okozhat. Az ilyen hibákat jobb megelőzni, mert a javítás nehézkes és sokkal többe is kerül, mint a megelőzés költsége. Ez vonatkozik a kis evezős hajókra és a nagy értékű motoros vagy vitorlás hajókra egyaránt, tehát érdemes erre nagyobb figyelmet fordítani.

A megfelelő védelmet a legkönnyebb még az első vízre tétel előtt elvégezni. Ha azonban már használjuk a hajót, és nem észlelünk a hibára utaló jeleket, még ekkor sem késő a megelőző védőrendszer kialakítása. Több ozmózis megelőző rendszer létezik. Ezek bármelyike nem csak az ozmózis ellen védi a hajótestet, hanem megőrzi, és esetleges eladásakor növeli a hajó értékét. Az ozmózist megelőző kezeléshez a hibátlan és alaposan átvizsgált hajótestet speciális folyadékkal kell alaposan letisztítani. Ezt követően alapozásként egymást követően több rétegben kell epoxy alapozóval átvonni a hajótestet, majd szükség esetén 2-3 réteg algagátló felhordásával alakul ki a speciális, ozmózis ellen védő bevonat.

Az ozmózis kialakulása

A laminátumokon belül a víz és a még meg nem kötött anyagmaradványok kémiai reakcióba jönnek. A víz a gél záró rétegén keresztül a laminátba hatol, és ott a gyártásból megmaradt, de meg nem kötött anyagokkal savas erjedésbe kezd. Ez nagy belső nyomást gerjeszt, ami azután hólyagosodást és repedéseket idéz elő a külső felületeken. Ha a víz egyszer áthatol a gél záró rétegén, akkor azt a laminát, mint a szivacs, magába zárja, és elindul a káros folyamat. Ozmózist azonban nemcsak kívülről, hanem a hajófenékből behatoló víz is okozhatja. Ezért is fontos, hogy a hajófenék mindig száraz legyen. Minden védtelen hajótesten előbb-utóbb megtalálhatók az ozmózis jelei. Megjelenésének, kialakulásának ideje függ a vízfajtájától (édes, vagy sós víz), annak hőmérsékletétől és természetesen a hajótest gyártási minőségétől. Néhány esetben már a hajó fiatal korában is jelentkezhetnek az ozmózis jelei, ha a gél rétegében és a laminátban reaktív szennyeződések is vannak. Ám még a jól megépített hajóknál is megjelenhetnek az ozmózisra utaló hólyagok és repedések. Ezért is ajánlott epoxi védőréteggel megakadályozni a már csak körülményesen javítható hibák kialakulását.

Az ozmózis tünetei

Ennek a folyamatnak a leggyakoribb jelei a gélen kialakuló apró hólyagok. Ha ezek megjelennek, feltétlenül szakemberrel kell megvizsgáltatni a hajót. A hólyagok a gombostűfejnyi méretűektől kezdve akár tenyérnyiek is lehetnek. Folyadéktartalmuk szúrós szaga és ragacsossága biztos jele az ozmózisnak. Az is az igazsághoz tartozik, hogy hólyagokat más okok is előidézhetnek. Ezek többnyire kicsik és általában a vízvonal környékén jelennek meg. Nagyon kemények, szárazak és szagtalanok. Legtöbbször levegő bezáródás miatt keletkeznek, ám nagyobb problémát nem jelentenek. Ezt azonban csak szakember képes egyértelműen eldönteni. Komolyabb problémára utalnak a csillagrepedések, amelyek a laminát eltöredezésének látható jelei. Ezek többnyire hajlításos igénybevétel, vagy mechanikai károsodás következtében jönnek létre és így teszik lehetővé a víz laminátba való behatolását. A pórusos kis lyukacskák csökkentik a gél rétegvastagságát, és megkönnyítik a víz behatolását. Ez akkor is előállhat, ha a gél réteg anyagát nem megfelelő arányban keverték ki, vagy a környezeti feltételek nem voltak megfelelőek a kikeményedéshez, és ezért vált pórusossá a gél réteg. A laminátból kiálló rostszálak is veszélyesek e szempontból, mert olyanok, mint a lámpabél, és a laminátba a hajszálcsövesség alapján jutatják be a vizet. Ez is ozmózist okoz, bár csak kis területen, ám ha több ilyen kiálló rostszál van, az akár nagyobb területet is károsíthat.

A kezelés fázisai

Az ozmózis okozta hibákat csak szakember tanácsai, vagy az ő közreműködésével ajánlott kijavítani. Ehhez előbb a gélréteget részben, vagy teljesen el kell távolítani, majd a laminátréteget teljesen ki kell szárítani. Ha a laminát réteg nem szárad ki teljesen, a hólyagképződés újra elkezdődik, és az újbóli javítás már sokkal körülményesebb feladatot jelent. A gél réteget csak egyszer lehet eltávolítani az újbóli gélréteg felvitele előtt, mert másodszor már pótolni kell a laminát vastagságának csökkenéséből adódó veszteséget, amit csak szövetlaminálással lehet megoldani. Ám akkor is ezt kell tenni, ha az ozmózis okozta károsodás kiterjedt méretű és a delaminálódás mértéke jelentős. Az oldószermentes epoxigyanta lezárja a laminátot és összetartja a szabadon lévő rostokat, e mellett ez az alapozás vízzáró réteget képez, ami minimálisra csökkenti az ozmózis kialakulásának a lehetőségét. A műanyag hajókat tehát érdemes gyakrabban átvizsgálni, hogy az ilyen jellegű károsodást időben észrevegyük és megszüntethessük.

(Forrás: International yachtpaint.com )

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Kormos Yacht Service
KORMOS Service Kft. 8171 Balatonvilágos, József Attila utca 15. gkormos @ vipmail . huÍrj üzenetet! +36 ‑ 20/537 ‑ 6051 Hívj minket! Kormos Yacht Kft.
Kormos Yacht Service
Kormos Yacht Service, Balatonvilágos. 861 likes · 2 talking about this. Kormos Yacht Service - Hajójavítás, felújítás, villamosság szerelés, ozmózis javítás, hajó tárolás, elektromos hajó kezelés.
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Kormos Yacht Service - Kapcsolat. Kapcsolat. KORMOS Service Kft. 8171 Balatonvilágos, József Attila utca 15. Kormos Gábor. gkormos @ vipmail . hu. +36-20/537-6051. Hívj minket!
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Kormos Yacht Kft. Hajójavítás - Hajóépítés - Hajóvezetés - Balaton. Mühelyünben vállaljuk hajók teljes körű, külső-belső felújítását.
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Kormos Yacht Service added a new photo. · April 11, 2022 · April 11, 2022 ·
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(800) 555-5555; Member Login. Marine Specialists - Get Listed Today; Marine Services; How It Works; Vessel Sale & Charter; Kormos Yacht Service. Vessel Sale & Charter Balatonvil?g
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