Efisiensi Energi pada HVAC dengan Pengendalian Dinamis AHU Berbasis PLC
DOI:
https://doi.org/10.25170/jpk.v2i05.7030Keywords:
HVAC, PLC, VSD, THD, Smart BuildingAbstract
Common implementation of HVAC in high rise buildings involves combination of multiple AHUs, chillers and cooling towers. Where the adaptive operation only happens with the chillers as the chilled and cool water circulates between AHU – chiller – cooling tower. This paper is the design and implementation of adaptive AHU operation based on the supply and return air of each AHU within the HVAC system. The usage of PLC as local controller, multiple sensor and actuators within the AHU system (thermocouple sensor, pressure transmitter, air temperature –humidity sensor, air damper position sensor), common area & outdoor air temperature – humidity sensor, VSD, motorized valve, motorized fresh air damper, power meter, PLC and networked control system will ensure adaptive and programmable system suitable for various AHU operation and installation conditions. With the target temperature of 25℃ in the common area, the system dynamically adjust the actuators to keep temperature within +/- 1C° range. Within the implementation, the energy usage on the AHU system itself can be lowered from 100% to
65% - 73%.
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