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Experiment-based optimization of an energy-efficient heat pump integrated water heater for household appliances

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  • Atasoy, Erkan
  • Çetin, Barbaros
  • Bayer, Özgür

Abstract

Novel experimental-based study aims to determine the extent to which performance parameters of water heater system are altered when the heat pump is integrated and to clarify the optimum values of system variables by means of an optimization procedure using reliable experimental data. Considering compressor speed, air flow over evaporator as variables, experiments for both conventional electrical resistance and proposed heat pump integrated water heater for household appliances were conducted. Energy consumption, noise level and operating time were recorded. Experimental results reveal that energy consumption for heating 4 L water up to 50 °C is decreased by up to 26% in heat pump integrated water heater system, whereas noise level and operating time is increased by minimum 0.9 dBA and 65 min, respectively. Time-averaged COP value ranges in between 3.0 and 3.54 in the experiments, but for more realistic ambient temperature cases it may increase up to 7.5. Multi Objective Particle Swarm Optimization algorithm was performed for system components using curve fitted experimental data for the optimum values of system variables by considering energy consumption, noise level and operating time as objectives. Results lead to 17% decrease in energy consumption, 3.9 dBA increase in noise level and 82 min longer operating time.

Suggested Citation

  • Atasoy, Erkan & Çetin, Barbaros & Bayer, Özgür, 2022. "Experiment-based optimization of an energy-efficient heat pump integrated water heater for household appliances," Energy, Elsevier, vol. 245(C).
    • Handle: RePEc:eee:energy:v:245:y:2022:i:c:s0360544222002110
    DOI: 10.1016/j.energy.2022.123308
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    References listed on IDEAS

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    1. Keykhah, Sajjad & Assareh, Ehsanolah & Moltames, Rahim & Izadi, Mohsen & Ali, Hafiz Muhammad, 2020. "Heat transfer and fluid flow for tube included a porous media: Assessment and Multi-Objective Optimization Using Particle Swarm Optimization (PSO) Algorithm," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 545(C).
    2. Deng, S. & Wang, R.Z. & Dai, Y.J., 2014. "How to evaluate performance of net zero energy building – A literature research," Energy, Elsevier, vol. 71(C), pages 1-16.
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    Cited by:

    1. Fujun Ju & Zhenzhen Mu & Guozhu Li & Lihao Hou & Xiaowei Fan & Hongtao Liu & Qinglei Liu & Wenbo Liu, 2023. "Experimental Study on the Feasibility of Quick Startup of Instant Heat Pump Water Heaters Based on Active Control of Heat Sink Flow Step," Energies, MDPI, vol. 16(17), pages 1-15, August.
    2. Adria Banks & Colin Grist & Jonathan Heller & Hyunwoo Lim, 2022. "Field Measurement of Central CO 2 Heat Pump Water Heater for Multifamily Retrofit," Sustainability, MDPI, vol. 14(13), pages 1-18, July.
    3. Arpad Nyers & Jozsef Nyers, 2023. "Enhancing the Energy Efficiency—COP of the Heat Pump Heating System by Energy Optimization and a Case Study," Energies, MDPI, vol. 16(7), pages 1-20, March.

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