$$T_j=T_a+R_{θJA}⋅P$$
$$R_{θJA}=R_{θJC}+R_{θCH}+R_{θHA}$$

$$T_h=T_a+R_{θHA}⋅P$$
$$T_c=T_h+R_{θCH}⋅P$$
$$T_j=T_c+R_{θJC}⋅P$$

P []
Ta []
Tc []
Tj []
TθJA []
TθJC []
TθCH []
TθHA []