2. 2
Sommaire de la présentation
• Évolution et optimisation des composantes des
systèmes hydroniques
– Élimination d’air
– Réservoirs d’expansion
– Systèmes de pompage
– Vannes de contrôle
• Optimisation des réseaux de chauffage
– Réseaux Primaire
– Réseaux Primaire / Secondaire
– Réseaux Primaire variable
– Réseaux Primaire variable / secondaire variable
3. 2400 GPM
2400 GPM
1980 GPM (83% charge)
2 pompes en
opération
Pompe Simple Pompes en parallèle
Profil de charge
Ligne bleue = Profil au
design
Ligne rouge = Profil
véritable
Pourcentage de la charge
Nombred’heuresparannée
The purpose of this presentation is to:
Define Free Cooling,
Discuss the different types of free cooling systems that have, and are being used, along with the advantages and disadvantages of each,
Walk thru the design of a typical free cooling system while developing an understanding of the factors affecting performance and cost, and
Go thru “tips” for successful operation.
We setup our example with a 2,400 GPM secondary pumping station. The first two graphs are the 100% pump on the left, and the 50/50/50 on the right. The bell curve represents our building load profile. The blue line is the ‘’design’’ profile, whereas the red line is the ‘’Actual’’ profile line (notice the red line has a lower peak, and is to the left a little). What the graph on the right is showing us is that starting at 83% load, we start running on one pump (2 redundant).