What is Double Skin in AHU? (vs Single Skin)
If you are dealing with air handling units, you definitely come across the term double skin. Air handling units can be constructed in either single skin or double skin. So,…
What is Economizer in Chiller?
Large chillers often have an economizer to improve energy efficiency. However, engineers often don’t quite understand what is economizer in chiller. So, I did some studies. Chiller economizer produces cold…
Centrifugal Chiller vs Screw Chiller (Chiller Selection Guide)
Large buildings often need chillers for cooling. But, there are many types of chillers available on the market. Many engineers find it particularly difficult to choose between a centrifugal chiller…
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…
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…
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…
