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Optimization of the injection-port geometries of a vapor injection scroll compressor based on SCOP under various climatic conditions

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  • Kim, Dongwoo
  • Chung, Hyun Joon
  • Jeon, Yongseok
  • Jang, Dong Soo
  • Kim, Yongchan

Abstract

An analytical study is conducted to optimize the injection-port geometries of a vapor injection asymmetric scroll compressor operating under various climatic conditions. A numerical model was developed to predict the performance of the vapor injection asymmetric scroll compressor in the heating mode according to various operating parameters, and this numerical model was validated using data measured in a vapor injection heat pump. The effects of the location and number of injection ports on the performance of the asymmetric scroll compressor were analyzed using the numerical model. Both the optimal injection-port angle and required injection-port area increased as the outdoor temperature decreased in order to increase the injection mass flow rate. The optimized injection port designs were then proposed for the asymmetric scroll compressor in order to achieve the maximum SCOP (seasonal coefficient of performance) under various climatic conditions, improving the SCOP by 2%–6% relative to the baseline injection compressor.

Suggested Citation

  • Kim, Dongwoo & Chung, Hyun Joon & Jeon, Yongseok & Jang, Dong Soo & Kim, Yongchan, 2017. "Optimization of the injection-port geometries of a vapor injection scroll compressor based on SCOP under various climatic conditions," Energy, Elsevier, vol. 135(C), pages 442-454.
    • Handle: RePEc:eee:energy:v:135:y:2017:i:c:p:442-454
    DOI: 10.1016/j.energy.2017.06.153
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    References listed on IDEAS

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    1. Baek, Changhyun & Heo, Jaehyeok & Jung, Jongho & Cho, Honghyun & Kim, Yongchan, 2014. "Performance characteristics of a two-stage CO2 heat pump water heater adopting a sub-cooler vapor injection cycle at various operating conditions," Energy, Elsevier, vol. 77(C), pages 570-578.
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    3. Cho, Il Yong & Seo, HyeongJoon & Kim, Dongwoo & Kim, Yongchan, 2016. "Performance comparison between R410A and R32 multi-heat pumps with a sub-cooler vapor injection in the heating and cooling modes," Energy, Elsevier, vol. 112(C), pages 179-187.
    4. Qin, Fei & Zhang, Guiying & Xue, Qingfeng & Zou, Huiming & Tian, Changqing, 2017. "Experimental investigation and theoretical analysis of heat pump systems with two different injection portholes compressors for electric vehicles," Applied Energy, Elsevier, vol. 185(P2), pages 2085-2093.
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    Cited by:

    1. Jung, Jongho & Jeon, Yongseok & Cho, Wonhee & Kim, Yongchan, 2020. "Effects of injection-port angle and internal heat exchanger length in vapor injection heat pumps for electric vehicles," Energy, Elsevier, vol. 193(C).
    2. Piotr Kolasiński, 2020. "Domestic Organic Rankine Cycle-Based Cogeneration Systems as a Way to Reduce Dust Emissions in Municipal Heating," Energies, MDPI, vol. 13(15), pages 1-22, August.
    3. Kim, Dongwoo & Myeong, Seongryeol & Cha, Dowon & Kim, Yongchan, 2019. "Novel optimized operating strategies of two-phase injection heat pumps for achieving best performance with safe compression," Energy, Elsevier, vol. 187(C).
    4. Kutlu, Cagri & Erdinc, Mehmet Tahir & Li, Jing & Su, Yuehong & Pei, Gang & Gao, Guangtao & Riffat, Saffa, 2020. "Evaluate the validity of the empirical correlations of clearance and friction coefficients to improve a scroll expander semi-empirical model," Energy, Elsevier, vol. 202(C).
    5. Kim, Dongwoo & Song, Kang Sub & Lim, Junyub & Kim, Yongchan, 2018. "Analysis of two-phase injection heat pump using artificial neural network considering APF and LCCP under various weather conditions," Energy, Elsevier, vol. 155(C), pages 117-127.
    6. Piotr Kolasiński, 2020. "The Method of the Working Fluid Selection for Organic Rankine Cycle (ORC) Systems Employing Volumetric Expanders," Energies, MDPI, vol. 13(3), pages 1-28, January.
    7. Maeng, Heegyu & Kim, Jinyoung & Kwon, Soonbum & Kim, Yongchan, 2023. "Energy and environmental performance of vapor injection heat pumps using R134a, R152a, and R1234yf under various injection conditions," Energy, Elsevier, vol. 280(C).
    8. Wen, Qiangyu & Zhi, Ruiping & Wu, Yuting & Lei, Biao & Liu, Shanwei & Shen, Lili, 2020. "Performance optimization of a heat pump integrated with a single-screw refrigeration compressor with liquid refrigerant injection," Energy, Elsevier, vol. 207(C).
    9. Jai Pyo Sung & Joon Hong Boo & Eui Guk Jung, 2020. "Transient Thermodynamic Modeling of a Scroll Compressor Using R22 Refrigerant," Energies, MDPI, vol. 13(15), pages 1-21, July.

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