sigma 5.67051e-8[W/(m^2*K^4)] Stefan-Boltzmann constant em 0.98 Emmisivity hwall 10[W/(m^2*K)] Vial wall heat transfer coefficient rho_vap 2.6[kg/m^3] Vapor density rho_ice 920[kg/m^3] Ice density k_ice 2.56 Ice heat conductivity P0 20[Pa] Vacuum chamber pressure Mv 18[kg/kmol] Vapor molecular mass T_ice 230[K] Initial ice temperature R 8.314[J/(K*mol)] Gas constant T_c 200[K] Condenser temperasture Pvc 1[Pa]*exp(9.550426-5723.265[K]/T_c+3.53068*log(T_c*1[1/K])-0.00728332[1/K]*T_c) Vapor partical pressure at condenser c_c Pvc/R/T_c Vapor concentration at condenser Pv_ice 1[Pa]*exp(9.550426-5723.265[K]/T_ice+3.53068*log(T_ice*1[1/K])-0.00728332[1/K]*T_ice) Initial vapor partical pressure c_ice Pv_ice/R/T_ice Initial vapor partical pressure Cp_vap 840 Vapor heat capacity k_vap 0.025 Vapor heat conductivity Z0 0.008[m] Ice level T_amb 700[K] Temperature of heat radiator Dv 0.259[cm^2/s]*1.013e5[Pa]/P0*(T_ice/308[K])^2.334 Vapor diffusivity L_ice 2.84e6[J/kg] Latent heat of sublimation Cp_ice 1800[J/kg/K] Ice heat capacity R0 5e-3[m] Vial radius T0 T_ice External temperature