Effects of low ambient temperatures on propylene glycol properties and avoiding performance modeling pitfalls

Posted by Louis Rogerson on May 3, 2021 11:18:43 AM

This Doctor's Orders blog is a guest post from SRC Richmond's Director of Strategic Accounts, Louis Rogerson. 

Low-temperature heat transfer applications regularly use anti-freezing agents like propylene glycol (PG) to enable lower-temp operation. However, at very low ambient temps, properly calculating critical fluid properties like viscosity, fluid velocity, and their impacts on heat transfer becomes more complex. This post will analyze the correlation among those properties at low ambient temperatures and provide guidance for how to best model a coil’s performance at such conditions.

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Topics: Heat Exchangers, Quality, Reliability, Engineering

SRC Launches Validated R-449A & R-448A Condenser Performance Model

Posted by Dr. Jian Yu on Feb 10, 2021 11:53:03 AM

We’re super excited to announce that we’ve validated the performance ratings for R-449A and R-448A condensers in Enterprise, our coil selection software. We believe the condenser coil performance model we’ve developed is the most comprehensive and accurate of its kind in the industry.

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Topics: Heat Exchangers, Efficiency, Expertise, Reliability, Engineering, Refrigerants

Condensate’s Impact on Air Friction in Heat Exchangers Under Wet-Surface Conditions

Posted by Dr. Jian Yu on Jan 21, 2021 8:23:06 AM

This post summarizes the design and results from a set of tests recently conducted at Super Radiator Coils.

Plate fin-tube heat exchangers are widely used in many residential, commercial, and industrial systems, such as HVAC, food freezing/drying, data center cooling, heat recovery, dehumidification, etc.

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