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MAPP Plastics Discussion Forum

The MAPP Plastic Industry Discussion Forum allows members to rapidly communicate with each other. Post both questions and answers to questions that other MAPP members have about any industry topic from material and process issues to R&E Tax Credits and other business issues.

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Plastic Industry Forum - Converse with Plastics Processing Leaders / Equipment / Closed Loop System: Heat Pump vs. Chiller, Glycol or Water?
Posted:  24 Jun 2014 02:08
We have a member who currently has an open system that uses water tower cooling.  The water tower is at the end of it's useful life, and they have decided to move to a closed-loop system.

The member had an engineering consultant propose a system with two heat pumps and an air handler to disperse the acquired heat.

They would like to know from the MAPP community:

Does anyone have experience with a heat pump vs. a chiller?  Are heat pumps as reliable as chillers?

If you have a closed-loop system, are you running water or glycol and why?


Dustin McKissen
Posted:  24 Jun 2014 14:59
We use a closed loop chiller with treated water.  Are you contemplating a 100% glycol system or a water/glycol blend?  You will have leaks, and sometimes a hose will blow, so you need to think about the environmental side of cleaning up leaks.  I have no experience with a heat pump solution.  I am interested in following this topic to see what the community has to say.
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