Volume flows in the glycol/ice water heat exchanger

In 2-circuit refrigerant systems it is known that at full load the volume flow of the generator circuit should rather be larger, but in no case smaller than that of the consumer circuit. Otherwise, the stratified storage tank would continue to discharge despite the refrigeration unit’s full cooling capacity, and warm return flow from the storage tank would mix with the cold flow of the refrigeration unit, thus raising the flow temperature. It is less known that the same has to be taken into account when designing and controlling a heat exchanger connected between the generation and consumption circuit. To keep temperature losses as small as possible, the heat exchanger is usually designed for a temperature difference between glycol/ice water of 1K at both the inlet and outlet. This means that the ratio of the volume flows of glycol and water is then also optimal.

Fluctuating water volume
Fluctuating water volume
Split tank under the falling-film chiller
Split tank under the falling-film chiller
Ice water inlet
Ice water inlet

We have always assimilated engineering science and thermodynamics optimally in the various manufacturing processes.

Thermodynamicists,mechanical engineers and welding engineers define the dimensioning, design and construction of customised heat exchanger panels and systems in materials ranging from mild and austenitic steels through to titanium, and ensure successful distribution of their work worldwide.

In doing so they fall back on production engineering expertise and calculations developed in the course of the past hundred years that are still being continuously optimised in an ongoing process.

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