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Category: Chilled Water System

link to What is Chiller Lift?

What is Chiller Lift?

When it comes to improving chiller efficiency, the term chiller lift keeps repeating. Chiller lift does affect chiller efficiency. So, what exactly is chiller lift? How does it affect chiller...

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link to Hydronic Balancing Basics (Chilled Water System)

Hydronic Balancing Basics (Chilled Water System)

Hydronic balancing is important to the efficiency and effectiveness of chilled water system. However, many engineers find it very difficult to understand. So, I did some intensive studies. Liquid...

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link to What is Reverse Return Piping?

What is Reverse Return Piping?

Reverse return piping setup is not uncommon in both the chilled water system and hot water system. It promised to provide a balanced hydronic system. But, I'm curious to see if it is true. So, I did...

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link to What is Net Positive Suction Head? (Centrifugal Pump)

What is Net Positive Suction Head? (Centrifugal Pump)

A sufficient net positive suction head is one of the requirements of centrifugal pumps. Without it, centrifugal pumps will not move water and cavitation may occur thereby damaging the pumps. So, I...

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link to Secondary Pump Chilled Water System Explained

Secondary Pump Chilled Water System Explained

Secondary pumps are very common in the chilled water system. Chillers require primary pumps to move water through their evaporators but why do most chilled water systems have secondary pumps? I'm...

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link to 5 Types of Chillers in HVAC (Capacity & Efficiency)

5 Types of Chillers in HVAC (Capacity & Efficiency)

Chillers are one of the most important components in HVAC. They are the heart of the HVAC chilled water system. There are many types of chillers in HVAC and thus, what are the most common types of...

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About Me

My name is Yu Chang Zhen. I'm an HVAC professional with more than 7 years of practical experience, covering from design and installation to service and maintenance. I'm also a project manager and hot water heat pump specialist. Thus, my sharing of knowledge on this website not just about HVAC but also include project engineering, construction and hot water system.

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