Masseovn: Forskelle mellem versioner
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Den '''finske masseovn''' ('''russisk masseovn''' eller bare '''masseovn''' - muligvis også visse [[kakkelovn]]e) er en [[ovn]], som har 2 forbrændningskamre; det normale og et lidt længere fremme i "S"-luftkanalen, hvor uforbrændte gasser forbrændes. Dette bevirker, at masseovne er dobbelt så effektive som normale ovne og 30% bedre end de bedste ovne.
<ref>[http://www.tempcast.com/planninguide/plan01.html Temp-cast: Masonary Heating] Citat: "...Recent testing in Finland shows that masonry heaters typically attain combustion efficiencies of 88 to 91%. The Temp-Cast 2000 fireplace was tested by an independent lab in April 1992, showing combustion efficiency of 94.4%..."</ref>
Herudover har masseovnen en relativt stor [[masse]] (ca. 4.000 kg), som både [[isolere]]r og gemmer varme. Især afstanden på ca. 2,5 cm mellem den indre og ydre masse isolerer.
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Varmen fra den indre masse afgives over et døgn, så man faktisk kun behøver at fyre en gang i døgnet.
<ref>[http://heatkit.com/html/whatsa.htm What’s a Masonry Heater?] Citat: "...you can rapidly burn a large charge of wood without overheating your house. The heat is stored in the masonry thermal mass, and then slowly radiates into your house for the next 18 to 24 hours..."</ref>
En masseovn kan med fordel have en indbygget bageovn.
Masseovnen er en gammel [[opfindelse]] som kan spores tilbage til [[romer]]ske og [[arabisk]]e konstruktioner. [[Mark Twain]] roste (tyske) masseovne.
<ref>[http://www.timelyconstruction.com/MasonryHeaters/MarkTwain.htm Mark Twain om tyske masseovne. from 'Europe and Elsewhere' by Mark Twain] Citat: "...At half past seven on a cold morning the servant brings a small basketful of slender pine sticks...All day long and until past midnight all parts of the room will be delightfully warm and comfortable, and there will be no headaches [ [[carbonmonooxid]]-forgiftning?] and no sense of closeness or oppression...One firing is enough for the day; the cost is next to nothing; the heat produced is the same all day, instead of too hot and too cold by turns..."</ref>
==Kilder/referencer==
<References/>
==Se også==
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==Eksterne henvisninger==
▲*[http://www.geocities.com/RainForest/Vines/4095/masonry/masonry02.html Masonry Stove Construction Plans] Citat: "...Some Reasons for Building a Masonry Stove..."
===Selvbyg===
*[http://www.geocities.com/RainForest/Vines/4095/masonry/nav.html developed by the Missouri Department of Natural Resources' Division of Energy: Masonry Stove Construction Plans Navigation Page]
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