<div dir="ltr"><div dir="ltr"><div>Nemam fotovoltaniku, mam ohrev vody - kto chce, nech si porovna namerane data s predpokladanymi v ponukach predajcov tychto systemov.</div><div>Technicke udaje mojho riesenia:<br></div><div>aktivna plocha 3x2.26 m^2 ( 3x TS500 )<br></div><div>skon 53 stupnov ( strecha )<br></div><div>azimut si presne nepamatam, cca juhozapad (strecha), vecer mozem presne odmerat</div><div>Datum instalacie: 2. april 2016</div><div>Ratanie energie:</div><div>- teplota na vystupe kolektora</div><div>- teplota vratky do kolektora</div><div>- pulzny prietokomer v kolektorovom okruhu</div><div>- zname parametre solarnej kvapaliny ( hlavne merna tepelna kapacita )<br></div><div><br></div><div>Odber energie zo solarov je sustavny, aj v lete.</div><div>Prednost ma ohrev teplej vody</div><div>nasleduje ohrev vratky kurenarskej vody do plynoveho kotla ( akoby predohrev pred plynovym kotlom ) <br></div><div><br></div><div>V lete sa tymto teplom cez vymennik susi pivnica ( 3 radiatory ).<br></div><div><br></div><div>To znamena, ze odber tepla z kolektorov je pocas celeho roka a nikdy sa nestalo, ze by nebol odber a kolektory sli nad 100 stupnov smerom na stagnacnu teplotu.<br></div><div><br></div><div>Od tohoto datumu mam denne statistiky nazbieranej energie, na poziadanie mozem zverejnit.</div><div>Mesacne hodnoty energie v kWh su tu:<br></div><div><br></div>
<span></span>
<table style="font-family:"Liberation Sans";font-size:x-small" cellspacing="0" border="0">
<colgroup width="85" span="2"></colgroup>
<tbody style="font-family:"Liberation Sans";font-size:x-small"><tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/4</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">220,0</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/5</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">380,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/6</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">400,9</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/7</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">443,9</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/8</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">464,9</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/9</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">436,5</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/10</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">133,7</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/11</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">107,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2016/12</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">82,2</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left"><br></td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="left"><br></td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/1</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">102,7</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/2</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">96,2</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/3</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">280,4</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/4</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">253,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/5</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">459,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/6</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">479,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/7</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">454,8</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/8</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">494,4</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/9</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">235,6</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/10</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">216</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/11</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">97,6</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2017/12</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">64,5</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left"><br></td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="left"><br></td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/1</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">51,1</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/2</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">106,1</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/3</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">145,7</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/4</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">444,6</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/5</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">427,2</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/6</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">369,4</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/7</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">466,3</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/8</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">499,8</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/9</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">411,1</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/10</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">271</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/11</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">104,2</td>
</tr>
<tr style="font-family:"Liberation Sans";font-size:x-small">
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" height="17" align="left">2018/12</td>
<td style="border-color:rgb(0,0,0);border-style:solid;border-width:1px;font-family:"Liberation Sans";font-size:x-small" align="right">38,8</td>
</tr>
</tbody></table>
</div><div><br></div><div>Kto chce, nech si prerata realne namerane nazbierane energie a prerata navratnost pri cene elektriky okolo 0.145 - 0.15 eur/kWh v elektrike a okolo 0.05Eur/kWh v plyne.</div><div>Rovnako davam do pozornosti rozdiel medzi najlepsim a najhorsim (doterajsim) mesiacom. Je to vhodne hlavne pri uvahach "ci" a "ako" predimenzovat solare, ci FV a co to spravi v lete.</div><div>Januar 2019 bude dost podobny decembru 2018. <br></div><div><br></div><div>Navratnost s dotaciami je v mojom pripade voci elektrike zatial vychadza cca 5.9 roku, voci plynu cca 16.9 roku, pri 100% vyuziti ziskaneho tepla. Ak by teplo bolo vyuzite na menej %, doba navratnosti by bola umerne dlhsia, mozno az za predpokladanu zivotnost riesenia.<br></div><div><br></div><div><br></div><div>Dodo<br></div><div><br></div><div><br></div><div><br></div><div><br></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">ut 29. 1. 2019 o 14:42 Vláďa Anděl <<a href="mailto:vaelektronik@vaelektronik.cz">vaelektronik@vaelektronik.cz</a>> napísal(a):<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p><font face="Times New Roman">Zaujala mě jakási reklama
<a class="gmail-m_-7502691718368187913moz-txt-link-freetext" href="https://www.solarniexperti.cz/solarni-systemy/fotovoltaika/hybridni-solarni-elektrarna-s-bateriemi-li-ion-354-kwp-na-klic/" target="_blank">https://www.solarniexperti.cz/solarni-systemy/fotovoltaika/hybridni-solarni-elektrarna-s-bateriemi-li-ion-354-kwp-na-klic/</a>
kde říkají, že skutečná cena montáže 3,5 KWp elektrárny je
266000 Kč a nabízejí to s dotací za 161000. <br>
</font></p>
<p><font face="Times New Roman">No když to počítám, 13 panelů po
3300 Kč, baterie 2x2,4 KWh celkem za 54000 a měnič za 48000, je
to dohromady 144 900 Kč. Nevím, kolik může stát montáž. Že by
121000? Připadá mi, že bez dotace (bez nadiktovaných dodavatelů)
by se to dalo pořídit všechno levněji.<br>
</font></p>
<p><font face="Times New Roman">Trochu jsem počítal, kolik solárních
panelů bych na co potřeboval a jestli se mi taková sranda
vyplatí. Pro ohřev vody počítám 100 l/den, cca 4 KWh. Možná těch
100l je pro 2 lidi v létě zbytečně moc, na jaře a na podzim zase
panely nebudou stíhat. Takže dejme tomu, že mi bude stačit 5
panelů po 1,66m2 (1,4 KWp) a něco málo budu ukládat do baterky.
Už tak v létě skoro nebudu vědět co s energií.</font></p>
<p><font face="Times New Roman">Pak jsem počítal, jak by to
vycházelo alespoň pro částečné pokrytí vytápění. Mám tepelnou
ztrátu domu 5 KW při -15 st.C, takže když je v zimě okolo nuly,
potřebuju cca 3 KW. S tepelným čerpadlem s topným faktorem 5 je
to 615W, tedy 14,8 KWh za den. Protože mám podlahovku, teplo se
dá dobře akumulovat v anhydritu a většinou stačí topit přes den.
Asi nemá cenu počítat nějaké průměrné hodnoty, to by stejně
nefungovalo. TČ má tepelný výkon 7,5 KW, příkon ze sítě cca 1,5
KW. Pro běh kompresoru tohle potřebuju s rezervou, další rezerva
když se po obloze přežene mráček. Takže budu počítat 3KW při
jasné obloze a to mi dají panely, které by v létě daly cca 6
KWp. Jenže slunečných dní v zimě moc není a tak by vzniklo
monstrum s 22 panely, které stejně přes zimu moc energie nedá a
v létě už vůbec nebudu vědět, co s energií.</font></p>
<p><font face="Times New Roman">Trochu jsem koukal po CIS panelech,
mají mít ten poměr léto/zima příznivější. Jenže jsem našel jen
spoustu reklamních věcí, ale nějaké solidní měření a porovnání
panelu CIS/Si jsem nenašel.</font></p>
<p><font face="Times New Roman">Taky jsem koukal po těch virtuálních
bateriích. Platí se tam distribuční náklady a ze silové
elektřiny dostanu zpátky (dle dodavatele) jen část. Takže je to
taky o ničem. Zkrátka pokud topím TČ, ostrovní systém je utopie
a všechno ostatní je finančně (z hlediska úspory) bezvýznamné.
Zatím mám na střeše jeden CIS panel 100W, mám i nějaké (staré
NiCd) baterky, tak možná to časem trochu rozšířím, ale jen tak s
rozumem.</font></p>
<p><font face="Times New Roman">Anděl</font><br>
</p>
</div>
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</blockquote></div></div>