Heat transmitting apparatus

An apparatus for exchanging heat between small liquid volume flows and large gaseous volume flows, comprising:

• means for forming a circularly cylindrical pressure chamber of a predetermined length comprising a side wall defining radially directed gaseous flow output means and first and second end wall means;
• pipe means coaxially aligned within said pressure chamber and extending from one of said first and second end wall means to the other of said end wall means, said pipe means having an axial gaseous flow input aperture and an elongate radially disposed gaseous flow aperture into said pressure chamber;
• means forming first and second enclosed deflection chambers at said first and second end wall means and respectively provided with liquid flow input and output means;
• a plurality of liquid flow tubular members extending between said first and second deflection chambers through said pressure chamber in a concentric arrangement around said pipe means and provided on their exterior with heat dissipating means;
• substantially smooth thermally insulating web means extending in a convoluted path from said pipe means toward said side surface for forming a plurality of substantially annular chambers circumscribing said pipe means for receiving said tubular members and providing unidirectional gas flow thereacross between said gaseous flow aperture and said gaseous flow output means, said web means being of a width substantially equal to said predetermined length;
• and
• means for drawing said web means into taut tangential contact with said tubular members.