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Category: Chilled Water System

link to Chiller Efficiency Calculation: kW/Ton, COP, EER & IPLV/NPLV

Chiller Efficiency Calculation: kW/Ton, COP, EER & IPLV/NPLV

Chiller efficiency is one of the most discussed topics among HVAC engineers. However, chiller efficiency is represented in many different units of measurement and certain units may not be stated on...

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link to Why Do Cooling Towers Have a Blowdown Valve?

Why Do Cooling Towers Have a Blowdown Valve?

Cooling towers are one of the major components of the chilled water system. Many people encounter the blowdown valve of cooling towers but they're not entirely sure why it is needed. So, I did some...

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link to How to Calculate Chilled Water Pump Head?

How to Calculate Chilled Water Pump Head?

Pump head is an essential parameter for chilled water pumps as well as condenser water pumps. It determines if the pumps are able to deliver the required water flow rate. So, how do you calculate the...

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link to Chiller Surge: Symptoms, Causes & Preventions

Chiller Surge: Symptoms, Causes & Preventions

Chiller surge is a problematic behaviour in buildings that are equipped with a chilled water system. Operators and engineers are having a hard time figuring out why chiller surge is happening. So, I...

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link to Chilled Water Pipe Insulation Thickness: Chart & Calculation

Chilled Water Pipe Insulation Thickness: Chart & Calculation

Chilled water pipes must be insulated to prevent condensation as well as conserve energy. Many junior engineers don't quite understand how the thickness of chilled water pipe insulation is...

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link to How Cooling Towers Work? (HVAC Applications)

How Cooling Towers Work? (HVAC Applications)

Cooling towers are one of the major components of HVAC. They are used to reject heat in chilled water systems. Many people don't actually realize the principle behind cooling towers. So, how cooling...

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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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