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case study - energy management chiller power plant

the CASE

Chiller Power Plant A multipurpose building (35.000 m2), comprising several tenants (hotel, health club, etc.) is equipped with a central chiller plant that produces chilled water which is sold to the tenants. Building management team was uncomfortable with plant operation and maintenance for two reasons: lack of confidence in the metering system used to charge energy to tenants and high energy costs. EdifĂ­cios SaudĂĄveis was called and, within 6 months, solved all the metering problems and achieved a 50% (!) reduction in energy costs just by implementing quick wins with an average payback of 3 months.

the building

Location: Portugal Area: 35.000 m


Opening-year: 1986 Space-types: Hotel SPA Congress Center Health-Club Business Center Medical Clinic

the chiller plant

Power (thermal): 2.500 kW Main Equipments: water-water chillers cooling towers pumps (400 kW) heat exchangers energy cost (CHILLER PLANT ONLY): 230 kâ‚Ź

Actions & Results

Energy Saving measures (only quick wins): · Equipment schedules (fine tuning) · Chillers re-scheduling (maximum efficiency in each load); · Fine-tuning of water temperatures (including outdoor air temperature reset) · Optimization of start- up and shut down routines · Peak load control

115 kâ‚Ź/year 3 months payback

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