Patent ID: 6886362

Claim:
A heat exchanger comprising: a tank; at least two coils sequentially coupled to each other, the at least two coils being disposed in the tank such that their exterior surfaces are exposed to a common volume defined within the tank; at least one coil inlet configured to admit a first stream through at least one of the at least two coils; a plurality of coil outlets configured to pass the first stream from the coils; at least two tank inlets configured to flow a second stream through the tank, each of the at least two tank inlets being positioned proximate a corresponding coil of the at least two coils to cause the second stream to flow over at least the coil with which the respective tank inlet is positioned proximately; and a tank outlet configured to remove the second stream from the tank and wherein the heat exchanger is configured such that the first stream may be selectively flowed through a desired number of the at least two coils and such that the second stream may be substantially simultaneously flowed over the same coils through which the first stream is selectively flowed.