Kev ua haujlwm kom tsim nyog ntawm lub qhov rooj qhov rooj tub yees lossis lub tub yees txias yog qhov tseem ceeb, thiab kev ntxuav yuav tsum yog qhov tseem ceeb rau kev ua haujlwm kom ua haujlwm. Yog tias tsis muaj kev ntxuav, av, hmoov av, thiab gime yuav txhim tsa, thiab yuav ua rau muaj kev ua tsis tau zoo. Raws qab
Nkag siab R - Tus nqi ntawm insulated iav qhia txog r - tus nqi yog ib lub ntsiab lus tseem ceeb zaus yog lub archeting thiab archulation thaum tham txog thermal rwb thaiv tsev. Nws sawv cev lub peev xwm ntawm ib daim lev
Kawm txog Fridge rooj iav: ib qho kev tsom xam dav dav, thev naus laus zis tau ua tiav cov kev daws teeb meem kev lag luam tub yees yog lub tswv yim ntawm lub fridge rooj iav. Kab lus no delve
Hauv kev nrawm - Paced lub ntiaj teb ntawm kev lag luam chaw, qhov twg kev txaus siab, thiab cov neeg siv khoom sib koom tes ua ke tuaj yeem cuam tshuam ua rau kev ua lag luam ua tau zoo. fridge ob lub rooj kaw lub rooj chav nyob ua ke yog pivotal fixtures muab ib