Heat exchanger

Apparatus comprising:

• (a) a first rod baffle comprising a first outer arc-shaped member having an arc of about 150.degree. to about 180.degree., and a first end and a second end;
• a plurality of rods affixed to the first outer arc-shaped member as chords and a first arc-closure member affixed to the first end of the outer arc-shaped member and the second end of the outer arc-shaped member;
• (b) a second rod baffle comprising a second outer arc-shaped member having an arc of about 150.degree. to about 180.degree., a first end and a second end, a second arc-closure member affixed to the first end of the second outer arc-shaped member and the second end of the second outer arc-shaped member, and a second plurality of parallel rods each rod of the second plurality of parallel rods affixed by one end to the second outer arc-shaped member and by the other end to the arc-closure member;
• and
• (c) at least one support member affixed to each of the first arc-closure member and the second arc-closure member so as to retain the outer arc-shaped member and the arc-closure member of the first rod baffle in juxtaposed relationship with the outer arc-shaped member and the arc-closure member of the second rod baffle;
• wherein each of the first arc-closure member and the second arc-closure member comprises an inner arc-shaped member in juxtaposed relationship with the outer arc-shaped member and having a first end and a second end and a first elongate member extending between the first end of the inner arc-shaped member and the first end of the outer arc-shaped member and a second elongate member extending between the second end of the inner arc-shaped member and the second end of the outer arc-shaped member and wherein the at least one support member comprises a U-shaped bracket with each of the first baffle and the second baffle affixed to the outside edge of one of the legs of the U-shaped bracket.