Lub ntsiab lus ntawm "thermal bridge" yog lub theej xwm zoo tshaj plaws nyob hauv keeb kwm kho tsev thiab keeb kwm tshuab, qhia txog qhov chaw nyob rau hauv qhov kho tsev uas muaj keeb kwm tuaj ntau dua li nyob hauv cov khoom siv nyob ze nrog vim muaj thermal conductivity siab dua. Xav tias nws yog "teeb meem" rau keeb kwm tuaj los ntawm ib daim kab keeb kwm. Nyob rau hauv ib daim kab kho tsev zoo, cov khoom siv kho tsev muaj kev pab cuam siab rau keeb kwm tuaj. Tab sis, yog tias muaj ib qho khoom siv muaj kev sib kis siab, xws li ib tug metal stud loss ib tug concrete column, tshwm sim ib kab uas muaj kev pab cuam tsawg dua. Ntawd yog thermal bridge. Lub peev xwm tsis yog tsuas yog ib qho kev loss energy leej twg; nws yog ib qho phem nyob meej thiab tshaj tshwv. Lub ntsiab lus kho tsev nyob rau hauv Fourier's Law ntawm keeb kwm tshuab, uas qhia tias lub sijhawm keeb kwm tuaj yog sib npaug rau kev sib kis ntawm khoom siv thiab lub teb chaws, thiab sib faib los ntawm lub teb chaws. Nyob rau hauv ib qho thermal bridge, kev sib kis siab ntawm khoom siv (xws li aluminum nyob rau 160 W/m·K thaum khoom siv nyob rau 0.03 W/m·K) ua rau muaj keeb kwm tuaj ntau nyob rau hauv chaw no. Ntawd ua rau muaj txhuv cua tsood tsood dua nyob rau hauv sab nraud ntawm thermal bridge kom compared to cov chaw siv khoom siv nyob ze. Thaum lub txhuv cua no tsood tsood dua lub dew point, condensation yuav tshwm sim, thiab tag nrho cov kev puas tsuaj rau mold thiab kev phom sij ntawm khoom siv. Yog li ntawd, kev paub txog lub ntsiab lus ntawm thermal bridge tsis yog tsuas yog ib qho ntsiab lus loj; nws koom nrog kev paub txog nws tus kheej phem, nws kev puas tsuaj rau keeb kwm kho tsev, neeg nyob, thiab kev siv zog, thiab lub tseemlo ntawm kev tsim kho kom tiv thaiv loss yog kom txo nws los ntawm kev sib sau ntawm thermal continuity.