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Eur Ing Professor Tim Dwyer
Variable geometry chilled beams for efficient variable air volume (VAV) systems
It has been almost 10 years since a CIBSE Journal CPD last discussed variants and applications of the ‘chilled beam’. In the meantime, the installation of beams has gathered pace, and they are now commonly seen in commercial applications. This CPD will revisit the basic functions of chilled beams, …Welat Han
Displacement ventilation - a forgotten concept with huge potential
Have you ever wondered why some indoor environments cause discomfort and draughts despite being a large and open space, a classroom for instance? As experts in the industry of heating, ventilation and air conditioning (HVAC) the above is an obvious example of when the selection of ventilation …Niklas Jacobsson
2-step optimisation for energy efficiency and IEQ
A good indoor climate is fundamental for people to perform, rest and thrive inside built premises. However, energy efficiency is in nearly all cases on top of the agenda when designing an indoor climate solution – sometimes leading to a perceived conflict between indoor climate and energy …Dan Jones
The Crucial Role of Ventilation in Healthcare Facilities
Ensuring healthcare facilities are properly ventilated is the key to maintaining a safe and healthy environment for both patients and healthcare workers. With HVAC design and installation, there are many factors to consider. Although room terminal selection plays a significant role in the overall …Börje Lehrman
Why are the needs of HVAC solutions often oversized?
As an expert in software design for product selection and energy calculations, I believe it is common for solutions for heating, ventilation and cooling (HVAC) to be oversized. I would actually say that it is more common that they are oversized, than the other way around. This is because several …Carl-Ola Danielsson
What are the advantages of dry cooling?
The concept of dry cooling is all about delivering sensible cooling from a hydronic circuit. It might sound simple, but it has a prerequisite - the temperature of the system’s circulating water has to be kept above dew point at all times. Once this criterion is met, there is a clear potential to …Carl-Ola Danielsson
Active chilled beams with variable k-factor - an option for both CAV and VAV systems
To create a healthy and comfortable indoor environment where people can perform an thrive, it is important to ensure good air quality. This, without creating noise and without causing discomfort due to high air velocities, temperature gradients or radiant asymmetry. The challenge is to design a …Malin Höij
Continuous improvements and standardisation - interview with Johan Lundgren
Significant improvements and genuine contributions for better tomorrow can be achieved when products and production processes are known in every detail. That is what Johan Lundgren, Plant Manager at the Swegon factory in Tomelilla, believes and he has enthusiastically told me about the many …Carl-Ola Danielsson
How to choose between active chilled beams and fan coils?
When designing an HVAC system there are a number of different choices that have to be made. One such choice is the type of terminal unit to use meet set requirements. There are many factors that influence the choice, such as energy consumption, service need, ease of system design and installation. …By topics