{"id":3035,"date":"2017-11-30T09:15:13","date_gmt":"2017-11-30T08:15:13","guid":{"rendered":"http:\/\/agora.xtec.cat\/iesmoianes\/?p=3035"},"modified":"2017-11-30T09:41:55","modified_gmt":"2017-11-30T08:41:55","slug":"eficiencia-estalvi-denergia-i-canvi-climatic","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/iesmoianes\/batxillerat\/eficiencia-estalvi-denergia-i-canvi-climatic\/","title":{"rendered":"Efici\u00e8ncia, estalvi d\u2019energia i canvi clim\u00e0tic"},"content":{"rendered":"

La Cristina Forcada, llicenciada en Ci\u00e8ncies Ambientals i membre de GAIA – Serveis Ambientals, ha proposat als alumnes de Ci\u00e8ncies per al M\u00f3n Contemporani de 1r de Batxillerat un estudi sobre el consum i l\u2019estalvi energ\u00e8tic. El taller s\u2019estructura en dues sessions separades per 15 dies i on els alumnes estudiaran el consum energ\u00e8tic al centre.<\/p>\n

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La Cristina ha comen\u00e7at explicant quin \u00e9s el consum mundial d\u2019energia, la distribuci\u00f3 desigual entre l\u2019hemisferi nord i l\u2019hemisferi sud, i els tipus d\u2019energies utilitzades. Del total de combustibles consumits, les fonts d\u2019energia renovables s\u00f3n minorit\u00e0ries, mentre que l\u2019\u00fas d\u2019energia nuclear i d\u2019energia procedent dels combustibles f\u00f2ssils \u00e9s molt majorit\u00e0ria.<\/p>\n

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L\u2019\u00fas de combustibles f\u00f2ssils i de minerals radioactius \u00e9s altament contaminant. \u00c9s destacable l\u2019efecte d\u2019aquest \u00fas en el medi ambient, responsable de la pluja \u00e0cida i, en gran mesura, del canvi clim\u00e0tic.<\/p>\n

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L\u2019alternativa a l\u2019\u00fas de combustibles contaminants \u00e9s l\u2019\u00fas d\u2019energies renovables: energia solar fotovoltaica, energia solar t\u00e8rmica, biomassa, energia hidr\u00e0ulica i energia geot\u00e8rmica.<\/p>\n

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En un centre escolar, el 81% de l\u2019energia es gasta en calefacci\u00f3, mentre que en llum es consumeix\u00a0un 6% (la resta correspon a l\u2019\u00fas d\u2019aparells electr\u00f2nics, cuina, etc.). Els alumnes hauran de determinar quin \u00e9s el consum real al nostre centre, aix\u00ed com valorar mesures d\u2019estalvi energ\u00e8tic a l\u2019institut. Per a obtenir aquestes dades, els alumnes analitzaran factures reals de consum de llum, aigua i gas. Abans d\u2019aix\u00f2, per\u00f2, els alumnes han de saber llegir les dades de les factures, no sempre gaire clares. La Cristina els ha explicat els conceptes de CUPS, mix el\u00e8ctric, pot\u00e8ncia contractada, consum, tarifa d\u2019acc\u00e9s, termes fixos i variables de la factura, etc. Els alumnes tamb\u00e9 recolliran dades reals de consum dels diferents aparells el\u00e8ctrics utilitzats regularment a l\u2019institut (fluorescents, ordinadors, etc.). Per a aix\u00f2, la Cristina els deixar\u00e0 mesuradors de consum en Wh endoll-endoll.<\/p>\n

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Prendre la decisi\u00f3 d\u2019aplicar mesures d\u2019estalvi \u00e9s necessari per a reduir la despesa i\u00a0el consum energ\u00e8tic, per\u00f2 sobretot per a evitar problemes mediambientals. Els alumnes descobriran diverses\u00a0mesures d\u2019estalvi, sovint senzilles per\u00f2 que no valorem adequadament i, alhora, en proposaran algunes per a l\u2019institut.<\/p>\n","protected":false},"excerpt":{"rendered":"

La Cristina Forcada, llicenciada en Ci\u00e8ncies Ambientals i membre de GAIA – Serveis Ambientals, ha proposat als alumnes de Ci\u00e8ncies per al M\u00f3n Contemporani de 1r de Batxillerat un estudi sobre el consum i l\u2019estalvi energ\u00e8tic. El taller s\u2019estructura en dues sessions separades per 15 dies i on els alumnes estudiaran el consum energ\u00e8tic al 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