EES-Based Thermodynamic Model for Evaluation of Bio-PCM Solar Cold Storage System in Tropical Climate

DOI

10.2991/978-94-6463-926-1_68How to use a DOI?

Keywords

Bio-PCM Thermal Energy Storage; Solar Cold Storage; Sustainable Refrigeration System; Thermodynamic Model

Abstract

An EES-based thermodynamic model was established to evaluate the temperature and energy performances of an on-grid bio-PCM solar cold storage system. The bio-PCM solar cold storage system comprises a 3.1 kWp monocrystalline solar PV integrated with a refrigeration system using R290 refrigerant. Its solar PV was installed at a 17° tilt angle to optimize solar energy capture. The system is al-so completed with real-time instruments to monitor and measure energy genera-tion, and refrigeration system performance. Data obtained was applied to develop a thermodynamic model in Engineering Equation Solver (EES) platform. Then the model was implemented to evaluate key performance parameters such as coefficient of performance (COP) and solar energy contribution to the cooling load. On days with the highest solar irradiation, the PV system generated up to 18.5 kWh of electricity, with 17.5 kWh utilized directly by the cold storage system, which had a total daily energy consumption of 39.8 kWh. The arrangement indi-cates utilization rate of solar energy as high as 69%, and of about 31% the solar energy generated from the system arrangement was exported to the national grid. Although solar PV systems reduce dependence on grid electricity, additional en-ergy is still required for nighttime, cloudy and defrost operations which can be met from thermal energy stored in the bio-PCM.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - I Nyoman Suamir
AU  - Adi Winarta
AU  - I Made Rasta
AU  - I Wayan Adi Subagia
AU  - Achmad Wibolo
AU  - I Made Sudana
PY  - 2025
DA  - 2025/12/31
TI  - EES-Based Thermodynamic Model for Evaluation of Bio-PCM Solar Cold Storage System in Tropical Climate
BT  - Proceedings of the International Conference on Applied Science and Technology on Engineering Science 2025 (iCAST-ES 2025)
PB  - Atlantis Press
SP  - 610
EP  - 616
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-926-1_68
DO  - 10.2991/978-94-6463-926-1_68
ID  - Suamir2025
ER  -