VENTED, GAS-FIRED AIR HEATER

摘要

High efficiency compact heaters for temporary heating applications are desirable. To avoid combustion gases being released, indirect fired heaters are preferable. The present invention provides a highly efficient heater having a heat exchanger with enhanced heat transfer characteristics and an improved burner design providing a relative short distance between the burner inlet and flame together with a venturi action in the burner head to promote air and gas mixing.