flow rate - Page 1 | Plumbing & Mechanical

Guard on Compliance | Misty Guard

Beyond flow rates: the structural shift in state-level mechanical and plumbing regulation

The most significant compliance fissure lies between states that codify specific metrics and those that adopt "dynamic" regulatory pointers.

Misty Guard

March 6, 2026

Although lower flow rates and higher energy factors remain central, the bills pending in Arizona, Illinois, Massachusetts, Pennsylvania and Virginia reveal a more profound structural shift.

The Glitch & The Fix: Identify the flow problems

September 27, 2024

The two photos below were from the same project. Flow is upward through the vertical pipe in Figure 1. Without any more details being described, can you spot at least two problems in each photo?

Renewable Heating Design | John Siegenthaler

Concepts for varying flow rate in geothermal earth loops

Max COP Tracking — Part 1

John Siegenthaler, P.E.

November 2, 2023

The goal is to keep the system COP as high a possible as the operating conditions of the heat pump change. The logic behind maximum COP tracking is to continually look for an earth loop flow rate that improves the system COP.