sigma 5.67051e-8[W/(m^2*K^4)] Stefan-Boltzmann constant em 0.98 Emissivity h_wall 10[W/(m^2*K)] Vial-wall heat transfer coefficient rho_v 2.5[g/m^3] Effective density of moist gas rho_ice 920[kg/m^3] Ice density k_ice 2.56[W/(m*K)] Ice heat conductivity P0 20[Pa] Vacuum chamber pressure M_v 18[kg/kmol] Vapor molecular mass R 8.314[J/(mol*K)] Gas constant T_ice 230[K] Initial ice temperature T_c 200[K] Condenser temperature P_v_c 1[Pa]*exp(9.550426-5723.265[K]/T_c+3.53068*log(T_c[1/K])-0.00728332[1/K]*T_c) Vapor partial pressure at condenser c_c P_v_c/(R*T_c) Vapor concentration at condenser P_v_ice 1[Pa]*exp(9.550426-5723.265[K]/T_ice+3.53068*log(T_ice[1/K])-0.00728332[1/K]*T_ice) Initial vapor partial pressure c_ice P_v_ice/(R*T_ice) Initial vapor concentration Cp_v 1.85[kJ/(kg*K)] Effective heat capacity of moist gas k_v 0.025[W/(m*K)] Effective heat conductivity of moist gas Z0 8[mm] Ice level T_amb 700[K] Temperature of heat radiator D_v 0.05[m^2/s] Effective diffusivity of vapor L_ice 2.84[MJ/kg] Latent heat of sublimation Cp_ice 1.8[kJ/(kg*K)] Ice heat capacity R0 5[mm] Vial radius T0 230[K] External temperature