Performance enhancement and environmental analysis of vapor compression refrigeration system with dedicated mechanical subcooling

International Journal of Air-Conditioning and Refrigeration - Tập 31 Số 1
Naveen Solanki1, Akhi̇lesh Arora2, Raj Kumar Singh2
1Department of Mechanical Engineering, Maharaja Agrasen Institute of Technology, Delhi, India
2Department of Mechanical Engineering, Delhi Technological University, Delhi, India

Tóm tắt

AbstractThe primary focus of this study is on the energy, exergy, and environmental (3E) analysis of a dedicated mechanical subcooled vapor compression refrigeration (DMS-VCR) system for applications involving commercially available water chillers that employ R134a (in both subcooler and main cycle). For a cooling capacity of 100-kW water chillers, the mathematical model of the DMS-VCR system is built to determine the performance parameter of the system. The DMS-VCR system reduces electricity usage by 15.52% and increase in COP by 9.5%, which results in a significant reduction in CO2 emissions of about 15.55%. When compared to equivalent vapor compression refrigeration system (VCRS), the system’s exergetic efficiency is also increased by 8%. Since the computer simulation results will undoubtedly give design engineers a better option, the subcooling and superheating of the vapor compression refrigeration system become alluring in this study. Consequently, the DMS-VCR system performs better as per the combined 3E study.

Từ khóa


Tài liệu tham khảo

Catalán-Gil, J., Llopis, R., Sánchez, D., Nebot-Andrés, L., & Cabello, R. (2019). Energy analysis of dedicated and integrated mechanical subcooled CO 2 boosters for supermarket applications. International Journal of Refrigeration, 101, 11–23.

Qureshi, B. A., & Zubair, S. M. (2012). The effect of refrigerant combinations on performance of a vapor compression refrigeration system with dedicated mechanical sub-cooling. International Journal of Refrigeration, 35(1), 47–57.

Qureshi, B. A., & Zubair, S. M. (2013). Mechanical sub-cooling vapor compression systems: current status and future directions. International Journal of Refrigeration, 36(8), 2097–2110.

Qureshi, B. A., Inam, M., Antar, M. A., & Zubair, S. M. (2013). Experimental energetic analysis of a vapor compression refrigeration system with dedicated mechanical sub-cooling. Applied Energy, 102, 1035–1041.

Selbaş, R., Kizilkan, Ö., & Şencan, A. (2006). Thermoeconomic optimization of subcooled and superheated vapor compression refrigeration cycle. Energy, 31(12), 2108–2128.

She, X., Yin, Y., & Zhang, X. (2014). A proposed subcooling method for vapor compression refrigeration cycle based on expansion power recovery. International Journal of Refrigeration, 43, 50–61.

Koeln, J. P., & Alleyne, A. G. (2014). Optimal subcooling in vapor compression systems via extremum seeking control: Theory and experiments. International Journal of Refrigeration, 43, 14–25.

Pottker, G., & Hrnjak, P. (2015). Experimental investigation of the effect of condenser subcooling in R134a and R1234yf air-conditioning systems with and without internal heat exchanger. International Journal of Refrigeration, 50, 104–113.

Llopis, R., Toffoletti, G., Nebot-Andrés, L., & Cortella, G. (2021). Experimental evaluation of zeotropic refrigerants in a dedicated mechanical subcooling system in a CO2 cycle. International Journal of Refrigeration, 128, 287–298.

Agarwal, S., Arora, A., & Arora, B. B. (2020). Exergy analysis of dedicated mechanically subcooled vapour compression refrigeration cycle using HFC-R134a, HFO-R1234ze and R1234yf. Singapore: Springer.

Aminyavari, M., Najafi, B., Shirazi, A., & Rinaldi, F. (2014). Exergetic, economic and environmental (3E) analyses, and multi-objective optimization of a CO2/NH3 cascade refrigeration system. Applied Thermal Engineering, 65(1–2), 42–50.

Sayyaadi, H., & Nejatolahi, M. (2011). Multi-objective optimization of a cooling tower assisted vapor compression refrigeration system. International Journal of Refrigeration, 34(1), 243–256.

Jain, V., Sachdeva, G., & Kachhwaha, S. S. (2015). NLP model based thermoeconomic optimization of vapor compression-absorption cascaded refrigeration system. Energy Convers. Manag., 93, 49–62.

Arora, A., Arora, B. B., Pathak, B. D., & Sachdev, H. L. (2007). Exergy analysis of a vapour compression refrigeration system with R-22, R-407C and R-410A. International Journal of Exergy, 4(4), 441–454.

Nag, P. K. (2002). Basic and applied thermodynamics by PK Nag: Thermodynamics by PK Nag (p. 781)

Carlsson, B., Meir, M., Rekstad, J., Preiß, D., & Ramschak, T. (2016). Replacing traditional materials with polymeric materials in solar thermosiphon systems - Case study on pros and cons based on a total cost accounting approach. Solar Energy, 125, 294–306.

Agarwal, S. (2019). Thermodynamic performance analysis of dedicated mechanically subcooled vapour compression refrigeration system. J. Therm. Eng., 5(4), 222–233.

ADB. (2021). Carbon Pricing for Green Recovery and Growth.

European Union. (2020). Carbon emissions pricing Some points of reference. March.

Thông tin
Thông tin xuất bản

International Journal of Air-Conditioning and Refrigeration

Tập 31 Số 1

Thông tin tác giả