f_htot 99[mm] Total height of the frame f_hr1 29[mm] Height of the first right part of the frame f_hr2 6[mm] Height of the second right part of the frame f_hr3 24[mm] Height of the third right part of the frame (insulation panel thickness) f_hr4 28[mm] Height of the fourth right part of the frame f_hr5 12[mm] Height of the fifth right part of the frame f_wtot 48[mm] Total width of the frame f_wb1 31[mm] Width of the first bottom part of the frame f_wb2 17[mm] Width of the second bottom part of the frame f_wt1 31[mm] Width of the first top part of the frame f_wt2 17[mm] Width of the second top part of the frame uc1_h 31[mm] Height of the first unventilated cavity uc1_w 25[mm] Width of the first unventilated cavity uc2_h 9[mm] Height of the second unventilated cavity uc2_w 10[mm] Width of the second unventilated cavity uc3_h 19[mm] Height of the third unventilated cavity uc3_w 12[mm] Width of the third unventilated cavity uc4_h 19[mm] Height of the fourth unventilated cavity uc4_w 25[mm] Width of the fourth unventilated cavity uc5_h 30[mm] Height of the fifth unventilated cavity uc5_w 5[mm] Width of the fifth unventilated cavity uc6_h 35[mm] Height of the sixth unventilated cavity uc6_w 15[mm] Width of the sixth unventilated cavity uc7_h 37[mm] Height of the seventh unventilated cavity uc7_w 36[mm] Width of the seventh unventilated cavity svc_h 8[mm] Height of the slightly ventilated cavity svc_w 3[mm] Width of the slightly ventilated cavity pvc_t 3[mm] PVC thickness epdm_t 3[mm] EPDM thickness m_t1 2[mm] First thickness of the unknown material m_t2 3[mm] Second thickness of the unknown material m_t3 6[mm] Third thickness of the unknown material pvl 190[mm] Panel visible length pp 12[mm] Panel Penetration sp1 2[mm] Useful space sp2 5[mm] Useful space sp3 6[mm] Useful space sp4 7[mm] Useful space A_uc1 int_uc1(1) Area of the first unventilated cavity A_uc2 int_uc2(1) Area of the second unventilated cavity A_uc4 int_uc4(1) Area of the fourth unventilated cavity A_uc6 int_uc6(1) Area of the sixth unventilated cavity A_uc7 int_uc7(1) Area of the seventh unventilated cavity uc1_h2 h_resized(A_uc1,uc1_h,uc1_w) Equivalent height for the first unventilated cavity uc2_h2 h_resized(A_uc2,uc2_h,uc2_w) Equivalent height for the second unventilated cavity uc4_h2 h_resized(A_uc4,uc4_h,uc4_w) Equivalent height for the fourth unventilated cavity uc6_h2 h_resized(A_uc6,uc6_h,uc6_w) Equivalent height for the sixth unventilated cavity uc7_h2 h_resized(A_uc7,uc7_h,uc7_w) Equivalent height for the seventh unventilated cavity R_uc1 1/(ha_2(uc1_h2,max_uc1(T6)-min_uc1(T6))+hr(uc1_h,uc1_w,ave_uc1(T6),epsilon,epsilon)) Thermal resistance of the first unventilated cavity R_uc2 1/(ha_2(uc2_h2,max_uc2(T6)-min_uc2(T6))+hr(uc2_h,uc2_w,ave_uc2(T6),epsilon,epsilon)) Thermal resistance of the second unventilated cavity R_uc3 1/(ha_2(uc3_h,max_uc3(T6)-min_uc3(T6))+hr(uc3_h,uc3_w,ave_uc3(T6),epsilon,epsilon)) Thermal resistance of the third unventilated cavity R_uc4 1/(ha_2(uc4_h2,max_uc4(T6)-min_uc4(T6))+hr(uc4_h,uc4_w,ave_uc4(T6),epsilon,epsilon)) Thermal resistance of the fourth unventilated cavity R_uc5 1/(ha_2(uc5_h,max_uc5(T6)-min_uc5(T6))+hr(uc5_h,uc5_w,ave_uc5(T6),epsilon,epsilon)) Thermal resistance of the fifth unventilated cavity R_uc6 1/(ha_2(uc6_h2,max_uc6(T6)-min_uc6(T6))+hr(uc6_h,uc6_w,ave_uc6(T6),epsilon,epsilon)) Thermal resistance of the sixth unventilated cavity R_uc7 1/(ha_2(uc7_h2,max_uc7(T6)-min_uc7(T6))+hr(uc7_h,uc7_w,ave_uc7(T6),epsilon,epsilon)) Thermal resistance of the seventh unventilated cavity R_svc 1/(ha_1(svc_h)+hr(svc_h,svc_w,ave_svc(T6),epsilon,epsilon)) Thermal resistance of the slightly ventilated cavity Rp f_hr3/lambda_p Thermal resistance of the central area of the insulation panel Up_n 1/(Rsi_n+Rp+Rse) Thermal transmittance of the insulation panel (normal) Up_p 1/(Rsi_p+Rp+Rse) Thermal transmittance of the insulation panel (protected) Up (Up_p*f_hr4+Up_n*(pvl-f_hr4))/pvl Thermal transmittance of the panel