Energy Efficiency of a Variable Speed of the Centralized Air Conditioning System Using Pid Controller (original) (raw)
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PID Controller for Optimum Energy Efficiency in Air-Conditioner
International Journal of Electrical, Energy and Power System Engineering
Air conditioning is a process of excluding moisture and heat in interior space for better thermal comfort. It is also one of the largest energy consumers in a household. The air-conditioner uses a lot of energy to maintain desired room temperature. The world is getting old and technologies are getting more advanced every day, energy-efficient appliances are needed to preserve the world. This paper presents a design and testing of the PID control for temperature and humidity control using Arduino to get the optimum energy efficiency. The system was developing by implementing the DHT22 sensor. The objectives of this work are; to design experimental model of air conditioning system, and to optimize the system using PID control. The Arduino is used in this work to showcase the temperature and humidity reading. The experimental model has been successfully built for use with PC fan with 12V and 0.26A current rate. The real-life performance is quite satisfactory.
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Jurnal Teknologi, 2016
Variable speed compressor (VSC) offers a wider range of cooling capacity control according to the cooling load of the system. The on/off controller consumes larger energy as the compressor is always working at maximum speed despites the cooling load and continuously on and off to prevent from over cool the room. This study focused on the implementation of VSC to increase energy efficiency with better temperature control inside the room for split unit air conditioning system. The experiments are done at room temperature of 23 and 24oC with internal heat load of 500 and 1000 W. The proposed system indicates as much 37% of energy saving as compared to on/off controller
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PID controller tuning and implementation aspects for building thermal control
WSEAS Transactions on Circuits and Systems, 2006
Abstract:-The control of the indoor environmental parameters of buildings is an open problem with many practical difficulties which stem from the non-linear, multivariable nature of the building models. This paper presents the tuning process of a conventional PID controller for the thermal comfort control application, in buildings utilizing fieldbus systems. The PID controller has been chosen taking into account its widespread deployment and its attractive features like low computational cost and simplicity of implementation. On the ...
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Management of Condenser Fan Speed and its Influence on the Split Air Conditioner Performance
Global Journal of Energy Technology Research Updates, 2019
Energy saving is the challenge of decreasing the quantity of energy consumption needed. This can be done by employing reliable and smart control system. In this article, an experimental study has been carried out to investigate the performance of a split air conditioning unit having a variable speed condenser fan. The rate of heat rejection airflow has been controlled according to the outdoor air temperature via a Proportional Integral Differential (PID) controller. The control algorithm allows increasing the condenser fan speed with the increase of outdoor air temperature and vice verse. The maximum rate of air flow of the fan is 0.43 m 3 /s at 42ºC outdoor air temperature and the minimum flow is 0.28m 3 /s. To facilitate variation of refrigerant flow rate according to the evaporator load, the traditional capillary tube was replaced with a suitable thermostatic expansion valve and liquid refrigerant reserve. The influence of condenser airflow modulation and its temperature on the air conditioner performance and also on the compressor power consumption has been investigated and presented at different evaporator loads. It has been found that a 10 % reduction in compressor power is achieved by increasing the condenser air flow by about 50%.
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Heat Ventilation & Air- Conditioning System with Self-Tuning Fuzzy PI Controller
In this paper, a Self-tuning Fuzzy PI controller is used for the supply air pressure Control loop for Heating, Ventilation and Air-Conditioning (HVAC) system. The modern H. V. A. Cussing direct digital control methods have provided useful performance data from the building occupants. The self-tuning Fuzzy PI controller (STFPIC) adjusts the output scaling factor on-line by fuzzy rules in accordance to the current trend of the control process. This research work has got the integration and application of these fundamental sources of information, using some modern and novel techniques. In Comparison to PID and Adaptive Neuro-Fuzzy (ANF) Controllers, the simulation results show that STFPIC performances are better under normal conditions as well as extreme conditions where in the HVAC system encounters large variations. The cost and scalability of the setechniques can be positively influenced by the recent technological advancement in computing power, sensors and data bases.
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