An experimental investigation on the radiant cooled wall's heat transfer characteristics in a fully conditioned real-sized living environment


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Koca A., Karakoyun Y., Acikgoz Ö., Dogu M., Dalkilic A. S.

Energy and Buildings, cilt.277, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 277
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.enbuild.2022.112578
  • Dergi Adı: Energy and Buildings
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Environment Index, INSPEC, Pollution Abstracts, Public Affairs Index, Civil Engineering Abstracts
  • Anahtar Kelimeler: Radiant wall, Radiant ceiling, Radiant floor, Heat transfer coefficient, Radiant cooling
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

© 2022 Elsevier B.V.Radiant wall applications have been favored compared to floor and ceiling ones owing to their advantages. In the current work, the heat transfer characteristics of a radiant cooled wall, which are heat fluxes, and heat transfer coefficients, have been experimentally investigated by altering supplied water temperatures and using proper reference temperatures in a fully conditioned real-sized test chamber where the obstacles such as unrealistic room sizes and insufficient air conditioning processes have been eliminated. Detailed methodology for the determination of reference temperature, used thermocouples’ locations, and heat gains were revealed. As a result, investigated radiant cooled wall's average total, radiative, and convective heat transfer coefficients were determined as 7.83, 5.14, and 2.57 W/m2K, in turn. 67 % of the total heat transfer rate in the mean was found to belong to radiation. Furthermore, novel empirical correlations on the total, radiative, and convective heat transfer coefficients were derived with the mean squared errors of 99 %, 98 %, and 99 %, respectively. There is no experimental investigation on radiant wall cooling excluding authors’ previous publications. Finally, a detailed measured and calculated dataset, obtained from the third investigation on the radiant cooling wall system in open sources, was presented for the sake of other researchers.