Secondary coolant finned coil

摘要

A heat exchanger has a fin pack, with a first supply header and a first return header at the first end of the fin pack. A first group of U-shaped tubes is provided with a first segment extending from the first supply header to the second end of the fin pack, and a second segment extending from the second end of the fin pack to the first return header. A second supply header and a second return header are also provided at the first end of the fin pack. A second group of U-shaped tubes is provided with a first segment extending from the second supply header to the second end of the fin pack, and a second segment extending from the second end of the fin pack to the second return header, where the second plurality of U-shaped tubes is disposed inwardly of the first plurality of U-shaped tubes.

主权项

1. A heat exchanger for a refrigeration device, comprising:
a plurality of fins spaced apart from one another in a substantially parallel arrangement to form a fin pack, with a first fin at a first end of the fin pack and a last fin at the second end of the fin pack; a first supply header disposed proximate the first end of the fin pack and a first return header disposed proximate the first end of the fin pack; a first plurality of U-shaped tubes having a first segment extending from the first supply header at the first end of the fin pack to the second end of the fin pack, and a second segment extending from the second end of the fin pack to the first return header at the first end of the fin pack; a second supply header disposed proximate the first end of the fin pack and a second return header disposed proximate the first end of the fin pack; a second plurality of U-shaped tubes having a first segment extending from the second supply header at the first end of the fin pack to the second end of the fin pack, and a second segment extending from the second end of the fin pack to the second return header at the first end of the fin pack; wherein the second plurality of U-shaped tubes is nested within the first plurality of U-shaped tubes.