Quantitative analysis of combustor length with GM (1, 1) model for MTPV system

Micro combustion chamber is the core part of the MTPV power system. But the size of the combustor always is determined by the experience. In the article, we attempt to predict the size of Micro combustion chamber according to the temperature distribution trend of wall with GM (1, 1) model of the grey theory system. Conversion efficiency map of GaAs photoelectric element is forecast feasible condition. Monochromatic radiation of MgO style radiators moves to the shortwave direction regularly with higher temperature. Draw out a temperature range for the efficient conversion of GaAs photoelectric element. The length of plate-type combustor is determined by radiation wall temperature, that makes fuel burning heat to the maximum participation GaAs photoelectric element changeover, finally to improve energy efficiency.