Wednesday, June 28, 2017: 9:45 AM-10:45 AM
Fundamentals and Applications
Chair:
James D. Lutz, P.E., Hot Water Research
Technical Committee: 6.6 Service Water Heating Systems
This seminar presents recent research on the performance of hot water distribution systems and parts. One presentation is about unexpected results of laboratory testing of flow rates and pressure drop across plumbing fittings. The second presentation discusses measurements of energy and water losses in a residential hot water distribution system using a PEX home-run manifold configuration.
1 Energy and Water Losses in a Residential a PEX Home-Run System
 |
Tania Ullah, National Institute of Standards and Technology |
This presentation examines measurements of energy and water losses in a residential hot water distribution system using a PEX home-run manifold.
2 Pressure Drop and Flow Rates in Residential Water Piping
 |
Gary Klein, Gary Klein and Associates, Inc. |
This seminar presents the results of pressure drop testing of pipe, with and without fittings and compares these results to the numbers found in standard engineering reference manuals. A selection of copper, CPVC and PEX piping from 1/4 - 3/4 inch nominal and commonly available elbows at velocities from 1-12 gpm have been tested. The method of tests and the results are presented. Come learn whether these are higher or lower and discuss the implications of not having good numbers for the future of safe, efficient and high performance plumbing design.