Chad Wiggins

Jul 11, 2024 | pumpsandsystems.com | Chad Wiggins |Amin Almasi

How often does a user stand in front of one of their pumps and wonder if its performance matches their expectations or the design specifications? Do they examine the tag displaying the flow rate (X gallons per minute [gpm]) and total dynamic head (TDH) (Y TDH) and think, “Does this tell the whole story?” Perhaps they have questioned whether the pump is operating according to its curve and design point or if recent system changes have been made in order to impact production.

Aug 31, 2023 | physoc.onlinelibrary.wiley.com | Kevin Webb |Michael Joyner |Chad Wiggins |Timothy W. Secomb

1 INTRODUCTION Human activity is drastically constrained at extreme altitudes due to low environmental oxygen availability. Few humans can reach the highest elevation on earth, the summit of Mt. Everest (~8850 m), without supplemental oxygen, and those who do are limited to such a degree that a slow uphill walk approaches the maximum capacity for oxygen uptake and utilization (V̇O2max).