Hi all,

I want to know about the calculations to design chiller for brew process , these kind of chillers have the condensator unit (compressor, condensator and evaporator ) , commonly the evaporator is a cupper pipe which is submerged in a insolated stainless pool with a blend of water + Glycol (commonly 50%). Chiller also has a 1/2 HP pump that drives the glycol and water from the pool to the fermenter jacket (which solenoid is activated) in order to cool the beer.

So I followed this post: https://bvthermal.com/how-to-size-a-brewery-chiller/ to calculate the power ,with that information I made an excel sheet where I entered the value of the total volume of wort that I need to cool in 18 hours (which is the normal time ) from 75F to 34F and the excel calculates the condensator unit power (in BTU/hr) that I need using the formule of heat ( C = Q /(m × ΔT)) . That method looks great and excel works perfect.

Nonetheless ,I want to calculate the volume of the chiller's pool, (as I mentioned is an insulated stainless box). Is there any information to get some formula to that purpose?

In other words what I want to model has these variables (input and output)

inputs:

Outputs

-Power of Unit compressor (BTU/hr) . Current I have this value.

-Volume of Chiller Pool .(m3 or liters)

-Large of the Evaporator Pipe.

attached the excel that I did and some photos of the chiller that I am talking about in this link https://we.tl/t-elnsrfhnj0

Thanks in advance.

Walter

I want to know about the calculations to design chiller for brew process , these kind of chillers have the condensator unit (compressor, condensator and evaporator ) , commonly the evaporator is a cupper pipe which is submerged in a insolated stainless pool with a blend of water + Glycol (commonly 50%). Chiller also has a 1/2 HP pump that drives the glycol and water from the pool to the fermenter jacket (which solenoid is activated) in order to cool the beer.

So I followed this post: https://bvthermal.com/how-to-size-a-brewery-chiller/ to calculate the power ,with that information I made an excel sheet where I entered the value of the total volume of wort that I need to cool in 18 hours (which is the normal time ) from 75F to 34F and the excel calculates the condensator unit power (in BTU/hr) that I need using the formule of heat ( C = Q /(m × ΔT)) . That method looks great and excel works perfect.

Nonetheless ,I want to calculate the volume of the chiller's pool, (as I mentioned is an insulated stainless box). Is there any information to get some formula to that purpose?

In other words what I want to model has these variables (input and output)

inputs:

**-Volume of Beer to be cooled (in lb or Liters),**

-Final Temperature

-Initial Temperature

-Pull down (crash) Time-Final Temperature

-Initial Temperature

-Pull down (crash) Time

Outputs

-Power of Unit compressor (BTU/hr) . Current I have this value.

-Volume of Chiller Pool .(m3 or liters)

-Large of the Evaporator Pipe.

attached the excel that I did and some photos of the chiller that I am talking about in this link https://we.tl/t-elnsrfhnj0

Thanks in advance.

Walter

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