HEAT EXCHANGERS
Mueller has built heat transfer equipment since 1940, and the range divides cleanly into two families: plates that fluid flows between, and inflated panels that put surface directly against whatever needs heating or cooling. Nearly every duty we quote is one or the other.
The core Mueller plate line: true counterflow, expandable packs, and full access to every surface.
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Spot-welded inflated panels that put heat transfer surface exactly where a conventional jacket cannot go.
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Temp-Plate evaporator plates chill water directly, with no glycol loop and no secondary exchanger.
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Vacuum brazed 316 stainless with no gaskets, for clean duty where compactness and pressure matter.
SELECTThat single question routes most enquiries. If both fluids can be pumped, an Accu-Therm plate and frame exchanger is normally the most efficient answer available: corrugated plates create turbulence at low velocity, giving a very high heat transfer coefficient, a temperature approach of two to three degrees and a unit occupying a fraction of the floor space of the alternatives.
If the fluid cannot be pumped, or the thing needing heat is a tank rather than a stream, Temp-Plate is the answer. Inflated panels are formed to shape and hung inside a vessel, bolted to the outside of one, or welded into a component so heat transfer becomes part of the equipment itself.
A falling film chiller is a Temp-Plate evaporator with water running down its face, which is why it chills water directly with no secondary loop and no freeze-up. A brazed plate unit is a plate pack with the gaskets and frame removed and the whole thing brazed into a sealed block.
Understanding that makes the range far easier to navigate. Once you know whether your duty is a plate problem or a panel problem, the specific product usually chooses itself.
Material follows the chemistry at the surface rather than the bulk stream. Gasket compound follows the temperature and the cleaning regime, and on many duties it is the binding constraint rather than the plate. Pressure drop decides plate pattern and frequently the whole selection, and it is the input most often left off an enquiry.
Send both fluids with flow rates, inlet and required outlet temperatures, pressures and the allowable pressure drop on each side, and the unit will be rated before it is priced.
The heat transfer line: Accu-Therm plate and frame in all its variants, Temp-Plate inflated heat transfer assemblies, falling film chillers, Fre-Heater heat recovery and brazed plate exchangers.
Ask whether both fluids can be pumped through an exchanger. If yes, a plate pack is more efficient and more compact. If the fluid sits in a tank or cannot be pumped, Temp-Plate puts the heat transfer surface where the fluid already is.
On a gasketed plate exchanger, yes, provided the frame was specified with room. Plates are added within the existing frame. Brazed and fully welded units cannot be expanded, which is one of the trade-offs of choosing them.
Plates in 304 and 316 stainless, titanium, Hastelloy and Incoloy. Temp-Plate in 304 and 316 stainless, carbon steel, titanium and higher alloys. Material is selected against the chemistry at the surface rather than against general severity.