If you want to learn about different types of control valve characteristic curves and their specific applications, follow the link below to my LinkedIn article: https://www.linkedin.com/pulse/control-valves-characteristic-curves-types-amir-reza-mahmoudi/?published=t
Control Valve’s Characteristic Curve Read More »
Here, I’m going to sum up a more elaborated article on the subject which was originally written in Persian language and is available at: Basically, selecting an approach for balancing a large-scale hydronic HVAC system depends on various parameters, e.g. system size, complexity, variable/constant flow system required level of balancing required level of control the
Methods for Balancing and Control of HVAC Hydronic system Read More »
In this post, I’m going to quickly review and recommend a book that is a really informative and authentic book capable to be seen as a source for learning the subject of HVAC&R, specially for the beginners. The title is ” Fundamentals of HVAC Control Systems “ by: Robert McDowall & Ross Montgomery The book
Book Review: FUNDAMENTALS OF HVAC CONTROL SYSTEMS Read More »
In the case of a PICV, the authority is calculated by comparing the pressure lost across the flow control element with the controlled pressure differential; these two values are nearly equal resulting in an authority close to 1. Depending on the design of the PICV, the authority of the flow control element may change as
Valve Authority for PICV Read More »
In the last decade, many articles have been published in technical journals, the majority of which emphasized on the necessity of manipulating balancing valves in HVAC systems. Here, we will go through how automatic balancing valves work and what their variability are as well as two important considerations when choosing and working with automatic balancing
What is Automatic (dynamic) balancing valve Read More »
PICV stands for Pressure Independent Control Valve. A PICV is a valve that can be fitted in heating and chilled water systems to provide: • Flow control – enabling modulating control of heating/cooling outputs • Flow regulation – enabling flow rates to be set at their specified design values • Differential pressure control – ensuring