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Science and Technology for the Built Environment Volume 21, 2015 - Issue 4
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Original Articles

Loss coefficients of bends in fully stretched nonmetallic flexible ducts

D. KulkarniField Controls, Kinston, NC, USA
&
Stephen IdemDepartment of Mechanical Engineering, Tennessee Tech University, 115 W. 10th St., Cookeville, TN38505-0001, USACorrespondence[email protected]
Pages 413-419 | Received 17 Jul 2013, Accepted 11 Dec 2014, Published online: 12 May 2015

References

  • Abushakra, B., I.S. Walker, and M.H. Sherman. 2004. Compression effects on pressure loss in flexible HVAC ducts. International Journal of Heating, Ventilating, Air-Conditioning and Refrigeration Research 10(3):275–89.
  • ASHRAE. 2005. ASHRAE Guideline 2-2005, Engineering Analysis of Experimental Data. Atlanta: ASHRAE.
  • ASHRAE. 2008. ANSI/ASHRAE Standard 120-2008, Method of Testing to Determine Flow Resistance of HVAC Ducts and Fittings. Atlanta: ASHRAE.
  • ASHRAE. 2012. ASHRAE Duct Fitting Database. Version 6.00.01. Atlanta: ASHRAE.
  • Beckwith, T.G., R.D. Marangoni, and J.H. Lienhard. 1993. Mechanical Measurements, 5th Ed. Appendix G, pp. 857–61. Reading, MA: Addison-Wesley.
  • Culp, C., and D. Cantrill. 2009. Static pressure losses in 12″, 14″ and 16″ non-metallic flexible ducts with compression and sag. ASHRAE Transactions 115(1):622–8.
  • Culp, C.H. 2011. HVAC flexible duct pressure loss measurements. ASHRAE Research Project RP-1333, Final Report, Atlanta.
  • Hodges, R.K., D. Kulkarni, and S. Idem. 2013. Pressure loss in fully stretched nonmetallic flexible duct with a bend. HVAC&R Research 19:87–100.
  • Weaver, K., and C. Culp. 2007. Static pressure losses in nonmetallic flexible duct (6″, 8″ & 10″). ASHRAE Transactions 113(2):400–5.

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