20HL Electrical Requirments

[CCB Co.]

Hi All, i have to enter into an electrical contract with a provider for my new 20HL brewery and their minimum guaranteed load seems excessive.
my brewery consists of the following

- 20HL brewhead (separate mash and lauter, combo whirlpool / kettle)
- 9 x fermenters
- 3 x BBTs
- 35KW Chiller for above fermenters and BBTs (apparently only operates at 90amps..?)
- Boiler for above brewhead and CIP - so no electric heating anywhere
- coldroom for goods (6mtr x 6mtr x 3mtr) or (20'x20'x10' in US terms)
- manual bottling, labeling and kegging

power is 230V, 3phase...
is a minimum monthly demand of 53KW excessive...?
any comments on what others guys are having as their monthly kw/hr consumption etc..
i believe they have not factored the correct operating load..?

appreciate any advise guys,

regards
Brad Hannam
CCB Co.

[Starcat]

Electrical Loads

Please give BBL instead of HL if you are in the USA.
If the MAX nameplate on the chiller is 90A, thats not where it will run. The RLA is typically also not where motor loads run, but the max they should ever see in normal operation.
Does your cold room have a separate DX system or is it fed from the chiller?
If you are not running any electric resistance heat systems your largest single loads will be refrigeration units.
The best way to get another more realistic take on the math is to enlist a savvy electrician to help you add up all the loads being sure nothing is missed.
It helps to walk the plant because the tendency is to miss things, eg. exhaust fans etc.

[CCB Co.]

cheers, about 17BBL...yes have a separate system for the cold room its not part of chiller (ive allowed 10kw for cold room..?)..
total computed load is about 70KW.... does that sound roughly correct...?

[Starcat]

Equipment List

Brad, I'd have to see a detailed list of all loads to comment.
Its a lot easier for me to think in terms of AMPs first as with respect to refrigeration loads.
Use the MIN. nameplate circuit ampacity converted to WATTS for your HVACR calculations.
INSTALL the MAX circuit protection [Breaker SIZE] on Refrigeration and AC ALWAYS.
Be sure your Electricians do this.
When you are looking at real world AMPs figures for refrigeration units it will be something approaching the COMPRESSOR RLA for said machine but typically less than in actuality. Good machinery installed very well will help you on HVACR RLA. This pertains efficiency especially on the condenser side.
The Electric Utility should calculate diversity correctly based on duty cycle of said loads, so the tally has to be complete and accurate,
Best of luck.