Patent ID: 6360699
Filing Date: 2002-03-26
Classification: F24H

Abstract:
Device for heating fluid, comprising:a first section for heating the fluid in which fuel and air are mixed and combusted; a second section for heating the fluid which is disposed substantially in the line of the combustion section and in which a number of pipes for the fluid extend substantially transversely of the flow direction of the combustion gases; and a third section for heating the fluid which is disposed substantially in the line of the second heating section and in which a number of pipes for the fluid extend substantially transversely of the flow direction of the combustion gases, wherein at least a number of the pipes in the third section are provided with ribs or fins enhancing the heat transfer; characterized in thatthe first section comprises a space formed between outer casing 67 and inner casing 62 in which space the fluid is heated.