Bungwe la British Thermal Unit (BTU) ndi kuchuluka kwa mphamvu ya kutentha yomwe imayenera kutulutsa kutentha kwa madzi imodzi peresenti F. Ichi ndi chiyero chogwiritsiridwa ntchito kufotokoza kuchuluka kwa mphamvu zomwe mtundu wa mafuta uli nawo kuchuluka kwa kuchuluka kwa chida chilichonse chopangira kutentha. Mitundu yambiri ya mpweya, magetsi, ndi zotentha zotentha zimatha kuwerengedwa mu BTU. Chiwerengero ichi chawunikira amalola anthu ogula zipangizo zamagetsi ndi zipangizo kuti azindikire kuchuluka kwa mphamvu zomwe zimatha kulenga.
Momwe BTU imagwirira ntchito mu Layman's Terms
Tangoganizani kutenga madzi okwana mapaundi ndi kuziika pa chitofu. Ngati madziwo ndi madigiri 60 (15 digiri C), ndipo mukufuna kubweretsa ku chithupsa cha madigiri 212 (100 digrii C), ndiye kuti mufunikira ma BTU 1,200 kuti mutero. Izi zikutanthauza njira yotsekedwa, yomwe mtola wanu, grill grill, kapena zipangizo zina zilizonse za kuphika sizinali. Malinga ndi lamulo la thermodynamics, njira yotsekedwa ili kutali ndi malo ake pafupi ndi malire omwe alibe kutengeramo mphamvu kuchokera kwa ilo. Pankhani iyi, mabungwe a BTU amawononga mphamvu.
Makometsedwe a mpweya
Kukwera kwa mpweya wabwino kumayimilira ndi BTU. Mwachitsanzo, mpweya wokhala ndi mpweya woyenera pawindo ungakhale ndi chiwerengero cha BTU cha 10,000. Kuti mupeze mpweya wabwino pawindo lanu ndi chipinda, muyenera kulingalira zazithunzi zapanyumba za BTU komanso zofunikira kwambiri, makamaka m'malo onse kuti mukhale ozizira.
Kuonjezera apo, ndi BTU, mukhoza kuwerengera mphamvu yowonjezera mphamvu (EER). Kuti muchite zimenezi, ingolinganizani kuwerengera kwa BTU pamtunda. Kumvetsetsa mawuwa kukuthandizani kusankha malo abwino otenthetsera ndi ozizira omwe amapezeka kunyumba kwanu.
Zida Zosautsa
Zida zotentha zonse zili ndi chiwerengero cha BTU.
Mwachitsanzo, propane ili ndi pafupifupi 15,000 BTU pa mapaundi, makala amakhala ndi BTU pafupifupi 9,000 pa paundi, ndipo nkhuni zouma zili ndi BTU pafupifupi 7,000 pa paundi. Izi zimakupatsani chidziwitso cha mafuta omwe mungafunikire kuphika, mwachitsanzo.
Zophika zingathenso kuganizira mtundu wa BTU. Sitovu panyumba imakhala ndi ma BTU 7,000 pazitsulo, pamene zopsereza zomwe zimapangidwira kuphika kuli ndi pafupifupi 3,000 mpaka 5,000 BTU. Komabe, chiwerengero cha BTU cha mtundu wotenthawu chikhoza kufika 12,000. Mosiyana, kafukufuku wamagetsi asanu ndi umodzi nthawi zonse amakhala ndi 12,000 mpaka 20,000 BTU, ndipo mtunduwu uli ndi pakati pa 90,000 mpaka 150,000 BTU, pafupifupi.
Grill Grills
Pankhani ya grills , onse ali ndi chiwerengero cha BTU pa ola limodzi. Mwachitsanzo, ngati mukuwona grill 35,000 BTU grill, zimatanthauza kuti grill imatulutsa 35,000 BTU kuchokera kumoto wake wonse pamodzi mu ola limodzi, kapena amagwiritsa ntchito mapaundi awiri a propane ola limodzi.
Ngakhale kuti chiwerengero cha BTU pa grill gasi sichikudziwitsani momwe kutentha kumatulutsa, kumakupatsani lingaliro lachidziwitso cha kutentha kwake, ndipo limakuuzani kuchuluka kwa mafuta omwe mudzakhala mukuyaka. Zina mwa zinthu zokhudzana ndi momwe grill idzathere, kapena momwe zidzakhalire bwino kutentha kwakukulu, zokhudzana ndi zomangamanga, momwe kutentha kumachitikira mkati mwa grill, ndi mapepala ophika.