Sakda Sittikruear. Application of Analytic Hierarchy Process (AHP) and Energy Efficiency Improvement in Community - Scale Whisky Industry. Master's Degree(Energy Technology). King Mongkut's University of Technology Thonburi. KMUTT Library. : King Mongkut's University of Technology Thonburi, 2011.
Application of Analytic Hierarchy Process (AHP) and Energy Efficiency Improvement in Community - Scale Whisky Industry
Abstract:
A policymaker always faces a decision-making problem with multiple criteria. Some problems
are difficult to decide due to the complexity of the criteria. This research aims to apply the Analytic
Hierarchy Process (AHP), a powerful decision-making support tool used worldwide for prioritizing
energy conservation measures in a selected community-scale whisky factory and its companies. There
are 4,595 community-scale whisky producers in Thailand. Most of them are in rural areas and lack
engineering knowledge of equipment design and operation. The selected factory underwent an energy
audit and was used for demonstration and dissemination. The energy efficiency improvement
opportunities consist of 7 measures: insulation for the evaporator, heat recovery from waste water, pre-
heating for fermented liquor, high efficiency evaporator, high efficiency condenser, high efficiency
stove and air-fuel ratio improvement and waste water treatment for biogas production. All the measures
were installations and modifications, except for biogas production due to its very high investment cost
but poor returns. An estimate of the conserved energy of the modified unit with proper operation and
maintenance such as rate of fuel feed into the stove, control of fuel fed during temperature raising
period (before the alcohol is evaporated) and temperature maintenance period (when the alcohol
evaporates), and soot removal schedule is 1,094 GJ/year and the avoided CO2 emission is 119 ton/year.
The payback period of each measure ranges from 0.36 to more than 15 years. The evaluation of actual
conserved energy was slightly lower due to uncontrollable moisture content in fuel and ambient
condition and inconsistent behavior of operators. The AHP application showed that the owners had
prioritized the high efficiency evaporator measure in the first place and biogas producing in the last
one. Most of them focused on saving potential, capital and maintenance cost criteria. The barriers of
AHP application in this research are so great due to low collaboration and the AHP methodology for
the villagers was not easy.
King Mongkut's University of Technology Thonburi. KMUTT Library