semas_PRODUCT SEMAS Technology

  • Save up to 50% of energy.
  • Control panel with variable-speed drive capability utilizing an intelligent control system (Fuzzy Logic Control-FLC) methods.
  • Feedback signals generated from electronic thermal sensors contribute to the efficiency of the system
  • Cascade control through the use of an advanced controller with the frequency drive inverter and soft-starter for two refrigerant compressors.

Novelty of Product

  • Capability of controlling two compressor circuit of an air-conditioning system with variable-speed operation.
  • Ability of matching the performance of the air-conditioning system with cooling load.
  • Temperature controller based on reset value of fuzzy logic control.
  • ETC-1 gives a good controller performance and easy to handle compared with conventional controller (On/Off, PID and PLC controllers).

 Market Potential

  • Replacement/Retrofitting of conventional centralized water-cooled packed AHU systems.
  • Replacement of the conventional control systems in mobile air-conditioning units such as Express Trains.

 Project Experience

  • Thermal environmental room (FKM-UTM).
  • Industrial laboratory (FKM-UTM).
  • Train application (FKM-UTM).
  • The whole project is achieving energy savings amounting to = 50%


dr henryIr. Dr. Henry Nasution

Fellow Researcher/ Senior Lecturer

Automotive Development Centre (ADC)

Universiti Teknologi Malaysia


Tel : 07-5535447 / 010-8858204