An experimental investigation on heat transfer characteristics arising over an underfloor cooling system exposed to different radiant heating loads through walls

Karakoyun Y., Açıkgöz Ö., Yumurtacı Z., Dalkılıç A. S.

APPLIED THERMAL ENGINEERING, vol.164, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 164
  • Publication Date: 2020
  • Doi Number: 10.1016/j.applthermaleng.2019.114517
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Business Source Elite, Business Source Premier, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Keywords: Radiant floor cooling, Power economy, Hydronic system, Radiant design standards, TRANSFER COEFFICIENTS, FLOOR, PERFORMANCE, BUILDINGS
  • Yıldız Technical University Affiliated: Yes


In the present study, four different surface configurations have been created, one corresponding to only cooling by the floor, whereas, three of them pertaining to simulations in each, one more sidewall has been used as a heat gain of the experimental chamber. The underlying reason behind sidewalls to be used as heat gain sources is that especially under hot climate conditions, uninsulated or improperly insulated walls of buildings to cause undesired heat gains. To experimentally realize these thermal conditions, tests have been performed within supply water mass flow rate and temperature ranges of 0.056 kg/s - 0.200 kg/s and 10 degrees C to 20 degrees C, respectively. Sidewalls' temperatures have been selected between 22 degrees C and 40 degrees C, to utilize them as heat gain sources.