Glycol pump recirculating way in micro brewery
- Nov 10, 2017
- 80
- beer
Glycol pump recirculating way in micro brewery
In the communication about the brewery specifications with our customers, here is one of the topic about the glycol pump recirculating type. Hope it give you an answer if you exactly have the same question.
Customer question: We do expect that the GWT pump will be operating all the time (supplying glycol water to the circulating ring main), so it does not need to be turned on/off automatically by the temperature control panel.
This situation is normal seen in some USA breweries. Their chiller has much bigger capacity and include a very small glycol tank inside (normally 50L or 100L or 30L to hold the pure glycol).
The GWT keeps running all the time to recirculate the pure glycol inside the glycol piping. When a certain fermenter needs to be cooled, the solenoid valve opens, so the pure glycol directly go into the fermenter.
We probably have up to 6 fermenters and a brite tank using glycol water for cooling... so there will almost always be at least one tank using glycol. So the glycol needs to be permanently available to flow into a cooling jacket when any solenoid asks for it, and therefore circulating under backpressure back to the GWT. Plus, it would be unusual for a temperature controller to send two control signals - first to open a solenoid valve and second to switch on the pump.
To the above worries:
1) Since the fermenters/BBTs are insulated, and plus that the temperature dropping speed/process is step by step, and besides we do not normally set an exact temerature point, but a +/- scope (for example, we set 5℃ on the temperature meter, and then we nornally set upper tolerance lower tolerance of 0.5℃, so from 0.45-0.55℃, so there is a while time that the solenoid valves do not open). Those points tell us that the GWT no need to work all the time.
2) The temperature meter will send one same signal ( not two signals) to the solenoid valve and GWT pump at the same time. And all the solenoid valves are parallel connected with the GWT pump. So there will be not messay work even if 6 fermenters needs to be cooled at the same time-- as long as one solenoid valve is on, the pump will not stop work, and only all valves are off, then the pump stops work.
We are manufacture of micro beer brewing equipment from 100L to 10000L per brew. Welcome to any different ideas and comments from you.
Edited by Jana
Sales manager
[email protected]
In the communication about the brewery specifications with our customers, here is one of the topic about the glycol pump recirculating type. Hope it give you an answer if you exactly have the same question.
Customer question: We do expect that the GWT pump will be operating all the time (supplying glycol water to the circulating ring main), so it does not need to be turned on/off automatically by the temperature control panel.
This situation is normal seen in some USA breweries. Their chiller has much bigger capacity and include a very small glycol tank inside (normally 50L or 100L or 30L to hold the pure glycol).
The GWT keeps running all the time to recirculate the pure glycol inside the glycol piping. When a certain fermenter needs to be cooled, the solenoid valve opens, so the pure glycol directly go into the fermenter.
We probably have up to 6 fermenters and a brite tank using glycol water for cooling... so there will almost always be at least one tank using glycol. So the glycol needs to be permanently available to flow into a cooling jacket when any solenoid asks for it, and therefore circulating under backpressure back to the GWT. Plus, it would be unusual for a temperature controller to send two control signals - first to open a solenoid valve and second to switch on the pump.
To the above worries:
1) Since the fermenters/BBTs are insulated, and plus that the temperature dropping speed/process is step by step, and besides we do not normally set an exact temerature point, but a +/- scope (for example, we set 5℃ on the temperature meter, and then we nornally set upper tolerance lower tolerance of 0.5℃, so from 0.45-0.55℃, so there is a while time that the solenoid valves do not open). Those points tell us that the GWT no need to work all the time.
2) The temperature meter will send one same signal ( not two signals) to the solenoid valve and GWT pump at the same time. And all the solenoid valves are parallel connected with the GWT pump. So there will be not messay work even if 6 fermenters needs to be cooled at the same time-- as long as one solenoid valve is on, the pump will not stop work, and only all valves are off, then the pump stops work.
We are manufacture of micro beer brewing equipment from 100L to 10000L per brew. Welcome to any different ideas and comments from you.
Edited by Jana
Sales manager
[email protected]
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