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The energy analysis of a hybrid hot tap water preparation system based on renewable and waste sources

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  • Dudkiewicz, Edyta
  • Fidorów-Kaprawy, Natalia

Abstract

The paper deals with many issues concerning hybrid water heating system based on the cooperation of thermal solar collectors, economizer using gas tube heaters' exhaust and gas boiler, which has not been recognized in literature enough. The energy analysis for such hybrid system has been performed after optimal system components sizing. Two analysis methods for hybrid system are discussed: the authors own hour-by-hour method and per-moth method suitable for engineering design. The operation time of the peak source and the temperature in the hot water tank during the year were checked. The annual energy shares of the particular sources were determined during analysis. The economizer gave 18.6% (per-month method) or 17.5% (hour-by-hour method) of energy; 62.0% (per-month method) or 60.0% (hour-by-hour method) of energy had been obtained using 68 solar collectors, but using 34 solar collectors the gains were 37.5% or 40.7% (per-month or hour-by-hour method). The design guidelines for engineers were specified and provided. The hybrid system analysis confirms that the devices should cooperate well when the appropriate sizing and control strategy are applied. The use of conventional source is at the level of 20%, so 80% of running costs and emissions are to be avoided.

Suggested Citation

  • Dudkiewicz, Edyta & Fidorów-Kaprawy, Natalia, 2017. "The energy analysis of a hybrid hot tap water preparation system based on renewable and waste sources," Energy, Elsevier, vol. 127(C), pages 198-208.
  • Handle: RePEc:eee:energy:v:127:y:2017:i:c:p:198-208
    DOI: 10.1016/j.energy.2017.03.061
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    1. Hasanuzzaman, M. & Rahim, N.A. & Hosenuzzaman, M. & Saidur, R. & Mahbubul, I.M. & Rashid, M.M., 2012. "Energy savings in the combustion based process heating in industrial sector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 4527-4536.
    2. Yang, Xiaochen & Li, Hongwei & Svendsen, Svend, 2016. "Evaluations of different domestic hot water preparing methods with ultra-low-temperature district heating," Energy, Elsevier, vol. 109(C), pages 248-259.
    3. Liu, Lanbin & Fu, Lin & Jiang, Yi, 2010. "Application of an exhaust heat recovery system for domestic hot water," Energy, Elsevier, vol. 35(3), pages 1476-1481.
    4. Abdelaziz, E.A. & Saidur, R. & Mekhilef, S., 2011. "A review on energy saving strategies in industrial sector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(1), pages 150-168, January.
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    Cited by:

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    2. Mamdooh Alwetaishi & Ashraf Balabel & Ahmed Abdelhafiz & Usama Issa & Ibrahim Sharaky & Amal Shamseldin & Mohammed Al-Surf & Mosleh Al-Harthi & Mohamed Gadi, 2020. "User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation," Sustainability, MDPI, vol. 12(22), pages 1-23, November.
    3. Orest Voznyak & Nadiia Spodyniuk & Ievgen Antypov & Edyta Dudkiewicz & Mariana Kasynets & Olena Savchenko & Svitlana Tarasenko, 2023. "Efficiency Improvement of Eco-Friendly Solar Heat Supply System as a Building Coating," Sustainability, MDPI, vol. 15(3), pages 1-18, February.
    4. Łukasz Amanowicz & Janusz Wojtkowiak, 2021. "Comparison of Single- and Multipipe Earth-to-Air Heat Exchangers in Terms of Energy Gains and Electricity Consumption: A Case Study for the Temperate Climate of Central Europe," Energies, MDPI, vol. 14(24), pages 1-28, December.
    5. Paweł Szałański & Piotr Kowalski & Wojciech Cepiński & Piotr Kęskiewicz, 2023. "The Effect of Lowering Indoor Air Temperature on the Reduction in Energy Consumption and CO 2 Emission in Multifamily Buildings in Poland," Sustainability, MDPI, vol. 15(15), pages 1-19, August.
    6. Łukasz Amanowicz, 2021. "Peak Power of Heat Source for Domestic Hot Water Preparation (DHW) for Residential Estate in Poland as a Representative Case Study for the Climate of Central Europe," Energies, MDPI, vol. 14(23), pages 1-15, December.
    7. Zhang, Dongwei & Gao, Zhao & Fang, Chenglei & Shen, Chao & Li, Hang & Qin, Xiang, 2022. "Simulation and analysis of hot water system with comprehensive utilization of solar energy and wastewater heat," Energy, Elsevier, vol. 253(C).
    8. Edyta Dudkiewicz & Natalia Fidorów-Kaprawy & Paweł Szałański, 2022. "Environmental Benefits and Energy Savings from Gas Radiant Heaters’ Flue-Gas Heat Recovery," Sustainability, MDPI, vol. 14(13), pages 1-16, June.
    9. Edyta Dudkiewicz & Natalia Fidorów-Kaprawy, 2020. "Hybrid Domestic Hot Water System Performance in Industrial Hall," Resources, MDPI, vol. 9(6), pages 1-12, May.

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