Over the last few weeks the Monday Morning Minutes posts have looked at pumping issues with multiple condensers and pumps. One of our most-received questions …
Parallel Pumping in Condenser Applications: Limiting the Flow Rate (Part 2)
In part 1 of this series we offered an example condenser water pumping system. The design of this example is 800 GPM per condenser for a …
Parallel Pumping in Condenser Applications (Part 1)
Applying a single constant-speed pump for each condenser in a chilled water application is a normal design for the HVAC engineer. The chiller manufacturers suggest …
Hydronic Expansion Joints (Part 2): It’s All About the Guides
Expansion joints in hydronic systems are used when the natural flexibility of the pipe will not handle the calculated movement caused by thermal expansion. Those joints could …
Hydronic Expansion Joints (Part 1)
Piping flexible connectors for pumps, chiller, towers, and other equipment are often described in two different sections of the mechanical specifications for new and retrofit …
Hydronic Pump Piping and Trim: Rubber Flexible Connectors
This week we look at rubber flexible connectors and compare. The first thing the reader will notice in the photo are the words “expansion joints” …
Sizing Pressure Relief Valves for Closed Chilled Water Systems
Pressure relief valve sizing for heating systems is well documented by ASHRAE, boiler codes, and product manufacturers such as Bell & Gossett. Relief valve sizing …
Open Cooling Tower Systems – An External Water Treatment Example
External water treatment in cooling tower systems will save labor and operational costs. It also saves the planet by reducing your clients’ dependance on chemicals …
Open Cooling Tower Systems — External Water Treatment Options
When people think of water treatment, they think of adding chemicals to the water to change it. That is the internal water …
Open Cooling Tower Systems — Internal Water Treatment Options
Cooling tower water will contain a variety of contaminants which are bad for the system and bad for people around the tower. Due …