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Research on Energy Saving Potential for Dedicated Ventilation Systems Based on Heat Recovery Technology

Author

Listed:
  • Lian Zhang

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
    School of Electrical and Energy, Tianjin Sino-German Vocational Technical College, Tianjin 300350, China)

  • Yu-Feng Zhang

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China)

Abstract

Research results have identified the use of heat pipe heat exchangers (HPHXs) for heat recovery as a way to reduce the pre-cooling and re-heating energy. This paper suggests decoupling dehumidification from cooling to reduce energy consumption. The feasible usage and the energy saving potential of heat pipe heat exchanger at the air handler dedicated in accomplishing this objective is investigated. In this paper a dedicated ventilation system combined with a HPHX to reduce energy consumption is tested and investigated under varying conditions by laboratory experiments. The energy saving potential and heat pipe (HP) effectiveness are tested and calculated under various outdoor conditions. The simulation and experimental results demonstrate that for all cases examined, the average HP effectiveness and energy savings have the same trend at various outdoor temperatures and Relative Humidity (RH) values. It has been found that the heat pipe can be applied to save over 60% energy for the air-conditioning operating hours. The reduction in overall energy is from 1.8% to 2.8% for the whole system. Therefore, the results confirm that the proposed set-up is useful for buildings to achieve intended energy saving objectives in subtropical climates where air-conditioning demand is highly variable.

Suggested Citation

  • Lian Zhang & Yu-Feng Zhang, 2014. "Research on Energy Saving Potential for Dedicated Ventilation Systems Based on Heat Recovery Technology," Energies, MDPI, vol. 7(7), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:7:p:4261-4280:d:37760
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    References listed on IDEAS

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    1. Yasuhiko H. Mori & Jun-ichi Ochiai & Ryo Ohmura, 2012. "Using Submarine Heat Pumps for Efficient Gas Production from Seabed Hydrate Reservoirs," Energies, MDPI, vol. 5(3), pages 1-6, March.
    2. Hsin-Jung Huang & Sheng-Chih Shen & Heiu-Jou Shaw, 2012. "Design and Fabrication of a Novel Hybrid-Structure Heat Pipe for a Concentrator Photovoltaic," Energies, MDPI, vol. 5(11), pages 1-10, October.
    3. Pierre Peigné & Christian Inard & Lionel Druette, 2013. "Ventilation Heat Recovery from Wood-Burning Domestic Flues. A Theoretical Analysis Based on a Triple Concentric Tube Heat Exchanger," Energies, MDPI, vol. 6(1), pages 1-23, January.
    4. Srimuang, W. & Amatachaya, P., 2012. "A review of the applications of heat pipe heat exchangers for heat recovery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(6), pages 4303-4315.
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    Citations

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    Cited by:

    1. Lian Zhang & Yu Feng Zhang, 2016. "Research on Heat Recovery Technology for Reducing the Energy Consumption of Dedicated Ventilation Systems: An Application to the Operating Model of a Laboratory," Energies, MDPI, vol. 9(1), pages 1-20, January.
    2. Lian Zhang & Zi Jian Chen, 2017. "Design and Research of the Movable Hybrid Photovoltaic-Thermal (PVT) System," Energies, MDPI, vol. 10(4), pages 1-13, April.
    3. Min-Hwi Kim & Joon-Young Park & Jae-Weon Jeong, 2017. "Energy Saving Potential of a Thermoelectric Heat Pump-Assisted Liquid Desiccant System in a Dedicated Outdoor Air System," Energies, MDPI, vol. 10(9), pages 1-19, September.
    4. Cheon, Seong-Yong & Lim, Hansol & Jeong, Jae-Weon, 2019. "Applicability of thermoelectric heat pump in a dedicated outdoor air system," Energy, Elsevier, vol. 173(C), pages 244-262.
    5. Kai-Shing Yang & Ming-Yean Jiang & Chih-Yung Tseng & Shih-Kuo Wu & Jin-Cherng Shyu, 2020. "Experimental Investigation on the Thermal Performance of Pulsating Heat Pipe Heat Exchangers," Energies, MDPI, vol. 13(1), pages 1-15, January.
    6. Rafal Andrzejczyk, 2018. "Experimental Investigation of the Thermal Performance of a Wickless Heat Pipe Operating with Different Fluids: Water, Ethanol, and SES36. Analysis of Influences of Instability Processes at Working Ope," Energies, MDPI, vol. 12(1), pages 1-28, December.

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