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Combined heat and power unit capacity for high-heat to power ratio buildings without selling excess electricity to the grid

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  • Cho, Woojin
  • Kim, Janghyun
  • Lee, Kwan-Soo

Abstract

This study presents a simple approach to estimate the capacity of combined heat and power (CHP) units suitable for installation in high heat-to-power ratio (HPR) buildings when excess electricity cannot be sold back to the grid. The two different methods used in this approach, a graphical method and a simple equation, are capable of predicting the optimum capacity to within 7% and 15%, respectively, of the methods presented in previous studies. In particular, the simple equation has the advantage of selecting the optimum capacity using the base and peak of the demand power load. The two easy-to-use methods can be used with any building, region, and energy-price structure that satisfies the conditions considered in this study, and will be of great use to future CHP owners.

Suggested Citation

  • Cho, Woojin & Kim, Janghyun & Lee, Kwan-Soo, 2012. "Combined heat and power unit capacity for high-heat to power ratio buildings without selling excess electricity to the grid," Energy, Elsevier, vol. 38(1), pages 354-361.
    • Handle: RePEc:eee:energy:v:38:y:2012:i:1:p:354-361
    DOI: 10.1016/j.energy.2011.11.049
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    References listed on IDEAS

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    1. Kim, Janghyun & Cho, Woojin & Lee, Kwan-Soo, 2010. "Optimum generation capacities of micro combined heat and power systems in apartment complexes with varying numbers of apartment units," Energy, Elsevier, vol. 35(12), pages 5121-5131.
    2. Wakui, Tetsuya & Yokoyama, Ryohei, 2011. "Optimal sizing of residential gas engine cogeneration system for power interchange operation from energy-saving viewpoint," Energy, Elsevier, vol. 36(6), pages 3816-3824.
    3. Oh, Si-Doek & Oh, Hoo-Suk & Kwak, Ho-Young, 2007. "Economic evaluation for adoption of cogeneration system," Applied Energy, Elsevier, vol. 84(3), pages 266-278, March.
    4. Oh, Si-Doek & Lee, Ho-Jun & Jung, Jung-Yeul & Kwak, Ho-Young, 2007. "Optimal planning and economic evaluation of cogeneration system," Energy, Elsevier, vol. 32(5), pages 760-771.
    5. Hawkes, A.D. & Leach, M.A., 2007. "Cost-effective operating strategy for residential micro-combined heat and power," Energy, Elsevier, vol. 32(5), pages 711-723.
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    Cited by:

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    3. Wakui, Tetsuya & Yokoyama, Ryohei, 2014. "Optimal structural design of residential cogeneration systems in consideration of their operating restrictions," Energy, Elsevier, vol. 64(C), pages 719-733.
    4. Li, Bo & Li, Xu & Su, Qingyu, 2022. "A system and game strategy for the isolated island electric-gas deeply coupled energy network," Applied Energy, Elsevier, vol. 306(PA).

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