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Analysis of the Working Characteristics of the Ejector in the Water Heating System

Author

Listed:
  • Drenusha Krasniqi Alidema

    (Faculty of Mechanical Engineering, University of Prishtina “Hasan Prishtina”, 10000 Prishtina, Kosovo)

  • Marigona Krasniqi

    (Faculty of Civil Engineering, University of Prishtina “Hasan Prishtina”, 10000 Prishtina, Kosovo)

  • Risto V. Filkoski

    (Faculty of Mechanical Engineering, Ss. Cyril and Methodius University, 1000 Skopje, North Macedonia)

  • Fejzullah Krasniqi

    (Faculty of Mechanical Engineering, University of Prishtina “Hasan Prishtina”, 10000 Prishtina, Kosovo)

Abstract

This paper presents original research of a model of water–water ejector whose aim is to mix a quantity of water of the return network with the water of the supply network of a central heating system. The water of the supply network at a certain pressure passes through the ejector nozzle, where the pressure energy in the nozzle is converted into kinetic energy, and consequently in the space around the nozzle vacuum gauge pressure is created which enables the absorption of a quantity of water from the network return, which is mixed with the water of the supply network. This water regulates the temperature of the water at the entrance of the central heating radiator. For the model ejector, characteristic equation was written and was analyzed in terms of pressure and mixing coefficient. The analysis was tested using nozzles of different sizes. To analyze the role of the diffuser as a part of the ejector, the ejector characteristics were analyzed without a diffuser. The characteristics of diffuser and non-diffuser ejectors are presented in the same diagram for comparative analysis of the pressure difference and mixing coefficients achieved by the ejector for different ratios f 3 / f r 1 .

Suggested Citation

  • Drenusha Krasniqi Alidema & Marigona Krasniqi & Risto V. Filkoski & Fejzullah Krasniqi, 2022. "Analysis of the Working Characteristics of the Ejector in the Water Heating System," Energies, MDPI, vol. 15(6), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:2025-:d:768338
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    References listed on IDEAS

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    1. Ali Khalid Shaker Al-Sayyab & Joaquín Navarro-Esbrí & Victor Manuel Soto-Francés & Adrián Mota-Babiloni, 2021. "Conventional and Advanced Exergoeconomic Analysis of a Compound Ejector-Heat Pump for Simultaneous Cooling and Heating," Energies, MDPI, vol. 14(12), pages 1-27, June.
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