The wort after mashing must be cooled to fermenting temperature(10-20℃) with 30-40 minutes. For your choice, we designed two solutions to cool the wort.
The first solution: It requires two stages plate heat exchanger(PHE), glycol tank and chiller
First stage in PHE Second stage in PHE
Wort(95℃-98℃)→→→→→→Wort(40℃-50℃)→→→→→→Wort(10℃-20℃)
Cooled by city water cooled by glycol water in glycol tank
The second solution: It requires two stages or single stages plate heat exchanger(PHE), glycol tank, cold liquor tank and chiller
If it s two stages heat exchanger, the procedure will be:
First stage in PHE Second stage in PHE
Wort(95℃-98℃)→→→→→→Wort(40℃-50℃)→→→→→→Wort(10℃-20℃)
Cooled by city water cooled by cold water in cold liquor tank
If it is single stage heat exchanger, the procedure will be:
Single stage in PHE
Wort(95℃-98℃)→→→→→→→→→→→→→→→→→Wort(10℃-20℃)
cooled by cold water in cold liquor tank
Comparison: About the first solution, it does not need cold liquor tank, so it can save the budget better. And the brewer had better use two stages heat exchanger. If using the single stage heat exchanger, the wort will need much more glycol water cooled. In this case, it is necessary to increase the capacity of glycol tank and chiller. Accordingly, the cost will be higher. Therefore, two heat exchanger is better choice.
About the second solution, some brewer prefer single stage heat exchanger. As we all know, the temperature of cold water is lower a lot than city water, so it can speed up the wort cooling. Of course, both two stages and single stage heat exchanger works better than the first solution. On the one hand, the cold liquor tank can store the cold water in advance, so it can reduce the working load of chiller more or less. On the other hand, once the heat exchanger is broken by accident, the wort would touch the city water/cold water rather than glycol water. Therefore, it can avoid the wort polluted, more safe design.
In addition, the city water and cold water after exchanging heat can be recycled to hot liquor tank for next batch.
Friends, if you have better solution or different comments, contact us freely.
We look forward to talk further with you.
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