Bernstein, Aaron, Naturwissenschaftliche Volksbücher, Bd. 12-16, 1897

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          <p>
            <s xml:id="echoid-s6061" xml:space="preserve">
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            veranſchaulicht. </s>
            <s xml:id="echoid-s6062" xml:space="preserve">— Jeder der zu erwärmenden Räume erhält
              <lb/>
            einen Ofen von entſprechender Heizkraft. </s>
            <s xml:id="echoid-s6063" xml:space="preserve">Im Keller ſteht der
              <lb/>
            gemeinſame Keſſel mit der Feuerung. </s>
            <s xml:id="echoid-s6064" xml:space="preserve">Die Verbindung des
              <lb/>
            Keſſels mit den einzelnen Öfen ſtellen je zwei Rohre, die “Zu-
              <lb/>
            leitung” und die “Rückleitung” her. </s>
            <s xml:id="echoid-s6065" xml:space="preserve">Das ganze Heizſyſtem
              <lb/>
              <figure xlink:label="fig-0438-01" xlink:href="fig-0438-01a" number="24">
                <caption xml:id="echoid-caption19" xml:space="preserve">Fig. 9.</caption>
                <description xml:id="echoid-description1" xml:space="preserve">EXPANSIONS-GEFÄSS
                  <lb/>
                LUFTLEITUNG
                  <lb/>
                ZULEITUNG
                  <lb/>
                RÜCKLEITUNG
                  <lb/>
                REGULATOR
                  <lb/>
                KESSEL</description>
              </figure>
            wird mit Waſſer gefüllt, wobei die Luft durch die hierfür vor-
              <lb/>
            geſehene “Luftleitung” ſelbſtthätig nach dem Expanſionsgefäß
              <lb/>
            aufſteigt. </s>
            <s xml:id="echoid-s6066" xml:space="preserve">Das Expanſionsgefäß hat den Zweck, Raum für
              <lb/>
            die mit der Erwärmung ſich ausdehnende Waſſermaſſe zu
              <lb/>
            ſchaffen. </s>
            <s xml:id="echoid-s6067" xml:space="preserve">Das einmal aufgefüllte Waſſer bleibt ſtändig in der
              <lb/>
            Heizung und man hat nur den, erſt nach längerem Betriebe
              <lb/>
            hervortretenden, ſehr geringen Waſſerverluſt zu erſetzen.</s>
            <s xml:id="echoid-s6068" xml:space="preserve"/>
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