TY  - JOUR
AU  - Mirinejad, H. 
AU  - Sadati, S. H. 
AU  - Ghasemian, M. 
AU  - Torab, H. 
PY  - 2008
TI  - Control Techniques in Heating, Ventilating and Air Conditioning (HVAC) Systems
JF  - Journal of Computer Science
VL  - 4
IS  - 9
DO  - 10.3844/jcssp.2008.777.783
UR  - https://thescipub.com/abstract/jcssp.2008.777.783
AB  - Problem statement: Heating, Ventilating and Air Conditioning (HVAC) systems are among the main installations in residential, commercial and industrial buildings. The purpose of the HVAC systems is normally to provide a comfortable environment in terms of temperature, humidity and other environmental parameters for the occupants as well as to save energy. Achieving these objectives requires a suitable control system design. Approach: In this overview, thermal comfort level and ISO comfort field is introduced, followed by a review and comparison of the main existing control techniques used in HVAC systems to date. Results: The present overview shows that intelligent controllers which are based on the human sensation of thermal comfort have a better performance in providing thermal comfort as well as energy saving than the traditional controllers and those based on a model of the HVAC system. Conclusion: Such an overview provides an insight into current control methods in HVAC systems and can help scholars and HVAC learners to have the comprehensive information about a variety of control techniques in the field of HVAC and therefore to better design a proper controller for their work.