Pumped Glycol Energy Recovery | Preliminary Design Questions

Preliminary Design Questions for a Pumped Glycol Energy Recovery System:

Dartmouth Burke Hall - Konvekta System

Every energy recovery design starts with a list of questions that should be answered.  If these items are explored and discussed early on it makes for a significantly better design.  There are several distinct advantages in packaged pumped glycol systems from Konvekta.  A key system aspect is that you can take energy from multiple exhaust units and distribute it to multiple supply units.  This is a big part of what makes the system so efficient;  you take the energy from where it is and transfer it to where it is needed. 

Here are the key items that we look for in preliminary design of a Pumped Glycol Energy Recovery System:

1. Project Name: 
2. Project Location: 
3. Supply Air
• AHU Qty: 
• CFM/ AHU:
• Outside Air Percentage: 
• Coil bank size – dimensions if possible, Face Velocity at minimum (500, 400 FPM): 
• Desired LAT – DB/WB – Summer & Winter: 
• If providing full heating through energy recovery coil:  Heat source – Hot water or steam, Temperatures available
4. Exhaust Air
   
   

   Konvekta Pumping Skid

• EAHU Qty: 
• CFM/ EAHU:
• Coil bank size – dimensions if possible, Face Velocity at minimum (500, 400 FPM)
• Exhaust Air Temperatures – DB/WB: 
• Exhaust quality – What is being exhausted?  Would the coils need a coating?
• Adiabatic Cooling – would this be an option
5. General Data
• Schedule of occupancy  – night setbacks, partial occupancy, summer shutdowns, etc.
• Utility Rates – average $/KWh, $/BTU heating, etc
• Glycol – Ethylene or propylene

The more complete the information,  the better the analysis.  In this preliminary phase we like to come up with a payback analysis for the project.  That’s always a starting point with any energy recovery application.

See related Blog Posts on Konvekta:
Pumped Glycol Energy Recovery | What’s so special about Konvekta?
Pumped Glycol Energy Recovery | Konvekta High Performance Heat Exchanger Coil
Ask Rick: Pumped glycol energy recovery systems | Reasons for poor performance in traditional systems