I am purchasing new 10 hL brewhouse (~8.5 bbl) and I have doubt about diameters of SS pipes and EPDM hoses.
Brewhouse will have MLT and BK/WP which are hard piped with SS pipes. For HEX->FV and FV->BBT transfer I will use EPDM hose.
Pumps (fixed and mobile) inlet is 51mm, outlet is 38mm.
Manufacturer suggest SS pipes that are 51 mm diameter on pump suction side and 38 mm on pump outlet, with 32 mm EPDM hose (all inner diameters).
For non metric users: 51 mm- 2", 38 mm- 1.5", 25 mm- 1"
My concern is that these diameters are huge for this size of brewhouse, and I am closer to 32 mm for inlet and 25 mm diameter for pump outlet (both for SS pipes and EPDM hoses).
Logic behind is this:
- If we aim for 1.5 m/sec flow speed at production side, and want to cool 1100 L (9.5 bbl) of wort in 30 min, required flow would be 2200 L/h (19 bbl/h). With this speed and flow we need ~23 mm inner diameter (aprox 25mm).
- At cleaning pipes (CIP), if we want 2 m/sec flow speed, with 2600 L/h (~22 bbl/h) flow we need ~22mm diameter.
Calculations are based on this calculator: http://www.1728.org/flowrate.htm
Brewery in neighborhood also have different diameters and brewmaster complained to me about complicity since there are a lot of different connections.. but I don't see issue here.
What do you think, is my math correct or using different diameters is over-complicating and will create confusion in practice?
Any other suggestions for anything I probably overlooked are also welcome.
Brewhouse will have MLT and BK/WP which are hard piped with SS pipes. For HEX->FV and FV->BBT transfer I will use EPDM hose.
Pumps (fixed and mobile) inlet is 51mm, outlet is 38mm.
Manufacturer suggest SS pipes that are 51 mm diameter on pump suction side and 38 mm on pump outlet, with 32 mm EPDM hose (all inner diameters).
For non metric users: 51 mm- 2", 38 mm- 1.5", 25 mm- 1"
My concern is that these diameters are huge for this size of brewhouse, and I am closer to 32 mm for inlet and 25 mm diameter for pump outlet (both for SS pipes and EPDM hoses).
Logic behind is this:
- If we aim for 1.5 m/sec flow speed at production side, and want to cool 1100 L (9.5 bbl) of wort in 30 min, required flow would be 2200 L/h (19 bbl/h). With this speed and flow we need ~23 mm inner diameter (aprox 25mm).
- At cleaning pipes (CIP), if we want 2 m/sec flow speed, with 2600 L/h (~22 bbl/h) flow we need ~22mm diameter.
Calculations are based on this calculator: http://www.1728.org/flowrate.htm
Brewery in neighborhood also have different diameters and brewmaster complained to me about complicity since there are a lot of different connections.. but I don't see issue here.
What do you think, is my math correct or using different diameters is over-complicating and will create confusion in practice?
Any other suggestions for anything I probably overlooked are also welcome.
Comment