Energy Efficiency Analysis in Air Conditioning Systems Using the Thermodynamic Cycle Method

Authors

  • Wulan Febriyani Universitas Gunadarma
  • Linda Purwanti Universitas Gunadarma
  • Ria Fitri Mawardiningrum Universitas Gunadarma

Keywords:

Energy Efficiency, Air Conditioning, Thermodynamic Cycle, COP Analysis, Refrigeration System

Abstract

Energy efficiency in air conditioning systems is a critical factor in reducing energy consumption and environmental impact. This study aims to analyze the energy performance of an air conditioning system using the thermodynamic cycle method. The analysis focuses on the refrigeration cycle, particularly the vapor compression cycle commonly used in residential and commercial systems. Key parameters such as coefficient of performance (COP), refrigerant flow rate, and enthalpy at each cycle point were examined to determine overall efficiency. Data were collected through simulations and experimental measurements under standard operating conditions. The results show that optimizing system components, especially the compressor and expansion valve, can significantly improve energy efficiency. The COP increased by 12% when a high-efficiency compressor was utilized. In addition, the selection of eco-friendly refrigerants contributed to better thermal performance and reduced environmental risks. This research highlights the importance of thermodynamic analysis in designing and improving air conditioning systems for sustainable energy usage. Future studies are recommended to incorporate real-time monitoring and adaptive control systems to further enhance system performance and energy savings.

References

ASHRAE. (2017). ASHRAE handbook: Fundamentals (Chapter 2: Thermodynamics and refrigeration cycles). American Society of Heating, Refrigerating and Air-Conditioning Engineers.

Dincer, I., & Rosen, M. A. (2012). Exergy: Energy, environment and sustainable development (2nd ed.). Elsevier.

Eurovent Certification. (n.d.). Thermodynamics in HVAC systems. Retrieved from https://www.eurovent-certification.com/en/category/article/thermodynamics-in-hvac-systems?universe=comfort

Mechanical Education. (n.d.). Air refrigeration cycles: Definition, types, working, advantages, disadvantages. Retrieved from https://www.mechanicaleducation.com/air-refrigeration-cycles-definition-types-working-advantages/

National Institute of Standards and Technology (NIST). (2022). Validation and optimization of a vapor compression cycle model accounting for refrigerant line pressure drop and heat transfer. https://www.nist.gov/publications/validation-and-optimization-vapor-compression-cycle-model-accounting-refrigerant-0

Schreiner, F., & Groll, E. A. (2003). Energy and exergy analysis of modern vapor-compression refrigeration systems. International Journal of Refrigeration, 26(7), 710–720.

Thermal Engineering. (n.d.). Thermodynamic analysis of refrigeration cycles. Retrieved from https://www.thermal-engineering.org/thermodynamic-analysis-of-refrigeration-cycles/

Wikipedia contributors. (2023). Clausius theorem. In Wikipedia, The Free Encyclopedia. Retrieved from https://en.wikipedia.org/wiki/Clausius_theorem

Wikipedia contributors. (2023). Coefficient of performance. In Wikipedia, The Free Encyclopedia. Retrieved from https://en.wikipedia.org/wiki/Coefficient_of_performance

Yang, X., Wang, Z., Zhang, Z., Chen, S., Hou, Y., & Chen, L. (2022). Thermodynamic analysis of air-cycle refrigeration systems with expansion work recovery for compartment air conditioning. Applied Sciences, 12(10), 5287. https://doi.org/10.3390/app12105287

Zhang, Z., Liu, S., & Tian, L. (2011). Thermodynamic perfectibility-based analysis of energy-efficiency standards for air conditioning products in China. Applied Energy, 88(7), 2420–2429. https://doi.org/10.1016/j.apenergy.2011.01.020

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Published

2025-06-02