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Relais Autonome » Historique » Version 34

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Laurent GUERBY, 02/06/2012 00:12

Relais Autonome

Issue #60

Essais Liens Mats Systemes Panneaux solaires Photovoltaique amorphe Batteries

Piles a combustible

Piles au methanol pour les caravanes avec un modele en vente (ebay & boutiques meme sur Toulouse) autour de 2000 euros pour 25W (12V * 2A) de capacité, petite boite 43,5 x 20,0 x 27,6 cm / 6.5 kg et 0.9 litre de methanol par kWh produit. A 10W cela fait 45 jours d'autonomie pour 40 euros la recharge de 10 litres.

Eolien Forums Doc Solutions radio

Cell Type: The type of silicon that comprises a specific cell, based on the cell manufacturing process. Each cell type has pros and cons. Monocrystalline PV cells are the most expensive and energy intensive to produce but usually yield the highest efficiencies. Though polycrystalline and ribbon silicon cells are slightly less energy intensive and less expensive to produce, these cells are slightly less efficient than monocrystalline cells. However, because both poly- and ribbon silicon panels leave fewer gaps on the panel surface (due to square or rectangular cell shapes), these panels can often offer about the same power density as monocrystalline modules. Thin-film panels, such as those made from amorphous silicon cells, are the least expensive to produce and require the least amount of energy and raw materials, but are the least efficient of the cell types. They require about twice as much space to produce the same power as mono-, poly-, or ribbon-silicon panels. Thin-film panels do have better shade tolerance and high-temperature performance but are often more expensive to install because of their lower power density.
Sanyo’s "bifacial" HIT panels are composed of a monocrystalline cell and a thin layer of amorphous silicon material. In addition to generating power from the direct rays of the sun on the panel face, this hybrid panel can produce power from reflected light on its underside, increasing overall panel efficiency.
Cells in Series: Number of individual PV cells wired in series, which determines the panel design voltage. Crystalline PV cells operate at about 0.5V. When cells are wired in series, the voltage of each cell is additive. For example, a panel that has 36 cells in series has a maximum power voltage (Vmp) of about 18V. Why 36? Historically, panels known as 12V were designed to push power into 12V batteries. But to deliver the 12V, they needed to have enough excess voltage (electrical pressure) to compensate for the voltage loss due to high temperature conditions. Panels with 36 ("12V") or 72 ("24V") cells are designed for battery-charging applications.
Panels with other numbers of cells in series are intended for use in grid-tied systems. Due to the increased availability of step-down/MPPT battery charge controllers, grid-tied panel

Projet

http://blog.lekermeur.net/?page_id=287

RB433, 2 minipci R52 ~ 15V 250 mA = 3.75W

Ca fait 90 Wh par jour soit 15 euros et 2.7 kg par jour
d'autonomie sur une batterie plomb, il faut encore multiplier
par 2 ou 3 pour eviter de decharger trop.

Le test par Olivier :

http://chiliproject.tetaneutral.net/projects/tetaneutral/wiki/Relais_Autonome
http://chiliproject.tetaneutral.net/projects/tetaneutral/wiki/Test_du_kit_Photovoltaique_Ekko_12W_pour_alimenter_un_WRT_autonome

Il faudra sans doute 50 a 100W de panneau photovoltaique pour un relai,
on trouve du 90W amorphe pour 121 euros livrés :

http://www.ebay.de/itm/Schott-Solar-ASI-90-Dunnschicht-Solarmodul-/250927063886?pt=Solaranlagen&hash=item3a6c6b234e#ht_500wt_1413

20kg de batterie (100 euros) + panneau (121 euros) + regulateur (50 ?)
+ matos wifi et antennes (300 ?) ~ 600 euros.

http://www.interprojekt.com.pl/mikrotik-routerboard-level-64mb-3xlan-3xminipci-p-394.html
http://www.interprojekt.com.pl/mikrotik-routerboard-r52nm-minipci-p-898.html
http://www.interprojekt.com.pl/mikrotik-routerboard-r52hn-300mbps-80211abgn-high-p-745.html
MIMO et dual 2.4/5.5

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Une solution alternative :

- un routerboard a la place du switch
- un cable pieuvre power jack 1 femelle vers 8 males
- une alimentation de portable 19V 3.42A
- un splitter PoE passif
- des injecteurs PoE passif

http://shop.varia-store.com/product_info.php?info=p1052_MikroTik-RouterBOARD-750--RB750--RB-750--Level-4-300-MHz.html
http://cgi.ebay.com/DC-1-8-Power-Cable-CCTV-Camera-DVR-Save-Adapter-/320442726434?pt=LH_DefaultDomain_0&hash=item4a9bdff822
http://cgi.ebay.com/PoE-Power-Over-Ethernet-Injector-Splitter-Adpater-Kit-/120719762126?pt=LH_DefaultDomain_0&hash=item1c1b7562ce
http://cgi.ebay.com/Acer-Notebook-AC-Adapter-Charger-19V-3-42A-5-5mm-2-1mm-/270686346419?pt=Laptop_Adapters_Chargers&hash=item3f0629dcb3

L'avantage du routerboard est qu'il accepte 9 a 28V DC en alimentation
donc a peu pres comme les ubiquity et que ses temperatures de
fonctionnement sont tres larges de -40 a +55C.

La doc du routerboard n'est pas tres claire sur la taille du power jack
est-ce 5.5/2.0 ou le plus standard 5.5/2.1 ?