Air conditioning is consuming huge energy presentation when comparing other equipment of the organization.it will be around the 60% of the whole energy cost of the energy bill in the organization. Due to that there should be a proper energy management system for the air conditioning system. Energy Manager is an intelligent energy metering system providing a vital insight into the energy consumption of a chiller or air conditioning system. Capable of sophisticated analysis, Energy Manager identifies key areas where potential energy savings can be made and operational costs significantly reduced. Using an intuitive set of analysis and reporting tools and user-friendly interface, Energy Manager can be installed in new or retrofit installations and can be analyzed by the site BMS. Chiller Sequence Manager is a super-intelligent control system which integrates air or water cooled chillers into a single operating system pre-programmed to run as master/slave or run/standby. The master controller will ‘play’ the cooling system for best-fit, energy efficient solutions ensuring equal wear on compressors, fully utilizing fresh air for free cooling and allowing remote or time zone set point adjustment across the sequence. It will react immediately to critical alarms and network failure.
AHU control
The AHU control strategy is to modulate the chilled water flow thought coil in response to changes in cooling load. This is achieved by monitoring. The AHU control strategy s to maintain the supply air temperature and modulate the supply air flow rate in response to changes in cooling load. This is achieved by monitoring the static pressure in the supply air ducting and varying the speed of the fan to maintain a fixed static pressure value. The temperature of supply air is maintained constant by modulating the chilled water low through the coil using a control valve.
Pump control
Most pumps used in building are normally part of chiller system and their operations are therefore controlled by the respective chiller system. Other independent pumping systems can be controlled based on parameters such as tank levels, temperature pressure or flow rate.
FCU control
in fan coil unit the space temperature is maintain at a set value by using a valve to control chill water flow through the cooling coil in response to changes in the cooling load .fn coil unit controls generally also have promotion to adjust the fan speed
Monitoring/Surveillance
• Building conditions
• Equipment status
• Utility demand
• Climate data
Control
• Schedule events
• Optimized start/stop
• Enthalpy optimization
• Chiller optimization
• Temperature setback/setup
Demand Limiting
• Load shedding
• Duty cycling
Maintenance
• Remote operation and control of equipment
• Generation of maintenance schedules
• Diagnosing breakdowns
Record Generation
• Trends and operation logs
• Utility demand profile
• Modification/replacement analysis
• Energy conservation documentation
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