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Category: HVAC Basics

link to COP | SEER | EER | CEER | kW/Ton | HVAC Efficiency Guide

COP | SEER | EER | CEER | kW/Ton | HVAC Efficiency Guide

The energy efficiency of air conditioners and chillers is commonly represented in either COP, SEER or EER. Sometimes, people like to use kW/Ton and windows air conditioners use CEER to indicate...

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link to What is VAV in HVAC?

What is VAV in HVAC?

If you're working in the HVAC industry for a while, you probably heard the word VAV. So, what exactly is VAV in HVAC, how does it work and why do we use a VAV? VAV stands for variable air volume....

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link to Is Radiant Cooling Efficient? (Fundamentals Explained)

Is Radiant Cooling Efficient? (Fundamentals Explained)

Radiant cooling is considered an advanced cooling system in many countries. It is said to yield a higher efficiency than a conventional VAV+VSD chilled water system. So, is radiant cooling more...

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link to What is Sensible Cooling Capacity? (Sensible vs Latent Load)

What is Sensible Cooling Capacity? (Sensible vs Latent Load)

Air conditioners often display both the total cooling capacity and the sensible cooling capacity. Many people wonder what is sensible cooling capacity so am I. Hence, I did a little...

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link to How to Read a Psychrometric Chart?

How to Read a Psychrometric Chart?

Psychrometric Chart is a useful tool in HVAC. It shows the properties of air and the relationship between temperature and humidity. Hence, it's important for HVAC engineers to understand how to read...

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link to What is a Plenum Box? (Purpose on FCUs and Diffusers)

What is a Plenum Box? (Purpose on FCUs and Diffusers)

A plenum box is a common and essential component in HVAC. However, not many people realize the true function of a plenum box. So, what exactly is a plenum box and what is the purpose of a plenum...

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Hi, my name is Yu Chang Zhen. I've been working as a professional in the HVAC industry for more than 7 years, covering from design and installation to commissioning and maintenance. With my experience, I want to help people solve their HVAC problems. Welcome, I hope you can find your solutions here.

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