An experiment on a cylindrical Ni-Al radiant burner with heat recuperation

Abstract

This paper presents experimentally studied temperature and radiation parameters of a gas-fired luminous radiant heater based on a conical aluminium recuperator and a cylindrical Ni-Al burner. Two operation modes have been investigated: (i) with air preheating by means of heat recuperation when the air is supplied into the burner through the hollow recuperator, and (ii) without air preheating when the fuel mixture is directly supplied to the burner. The dependences of radiation efficiency on a burner firing rate in the range of 100-340 kW/m 2 are analyzed. The specific requirements to obtain the radiation efficiency up to 70% are discussed.