Energy Efficiency in the Brewing
Industry
National Conference on Thermal Energy
Management
in the
Food & Drink Industries
By
Eric Candy
Brewing Industry Energy Efficiency
Areas to be Covered
• Past
• Present
• Future
Drive for Energy Efficiency
Not New
“In short, I expect almost totally to
prevent waste of steam”
James Watt – letter to Dr Lind 1765
Past
Mann’s Brewery Whitechapel
• Brewery on Site from 1808
• Developed in 1880’s with:
• Copper Pans,
• Copper Vapour Heat Recovery,
• Waste Steam from Beam Engine
heating Mash Tuns
• By 1930’s Electricity Generation with
District Heating Scheme
Past
Copper Pans
Courtesy “A

• Concern over steam leaks, need for
good lagging, finding uses for waste
products (O Overbeck)
• Brewery Refrigeration – need for
insulation, Carbon Dioxide & Ammonia
Primary Refrigerants (G Harrap)
Past
Papers in Brewing Journals
(G Harrap)
Past
Papers in Brewing Journals
(G Harrap)
Past
Papers in Brewing Journals
• 1902 Zeit.ges.Brauw
• Cheaper to generate electricity from
steam engines rather than gas engines
because of both lower fuel cost plus
use of spent steam for other uses (C
Eberle)
Past
Papers in Brewing Journals
• 1903 Zeit.ges.Brauw
• Use spent steam to heat water
• Use flue gas to heat boiler feed water &
mash tun sparging water.
• Condensate returned straight to boiler
(C Eberle)
Past
Papers in Brewing Journals

(
Basis for Benchmarking Fuel Ranges Not Known, probably excludes lighting)
Range
Madlener1900 Germany
BrownCoalkg/hl 25 50
EstGCVMJ/kg 17 24
MJ/hl 436 1193
Maynard1908 UK
Coallbs/brl 48 90
EstGCVMJ/kg 32 42
MJ/hl 426 1048
(Low end low Coal GCV, High end high Coal GCV)
Past 1947
Efficient Use of Steam – O Lyle
222 to 229 MJ/hl
(Low end low Coal GCV, High end high Coal GCV)
Existing Process No Heat Recovery
Past 1947
Efficient Use of Steam – O Lyle
124 to 163 MJ/hl
(Low end low Coal GCV, High end high Coal GCV)
No Process Mod Heat Recovery
• Preheat through Refrigeration condenser
• Wort cooling preheat liquor
• Copper Vapour
Past 1947
Efficient Use of Steam – O Lyle
106 to 140 MJ/hl
(Low end low Coal GCV, High end high Coal GCV)