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
2
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