Posts tagged heat transfer fluid

Perfect Paratherm Fit: New Business Director Ed Delate Aboard Team

If you read our December blog you already know about the addition of Ed Delate to the Paratherm team this past August. For those of you who missed our post – Ed is our newest Business Director, bringing an abundance of great ideas to further our company goals and initiatives.

Ed’s previous experience includes roles such as the Vice President of Global Engineering, Corporate Social Responsibility, and Safety at Keystone Foods, a division of The Marfrig Group. Before joining his new work family, Ed worked very closely with top global food industry companies. His senior level executive experience in the food industry, BS in Chemical Engineering, and MBA further his capabilities to bring excellence to our customer service focus.

Ed was already familiar with Paratherm when he set his sight on Business Director. Past employers used Paratherm for heat transfer fluid needs such as heating fry oil, for ovens, baking, and meat and poultry processing – to name a few. As a result, we were pleased to learn that Ed already felt a personal connection with our company.

After working with Ed for the past four months we know we made the right decision in bringing him on board. His strong leadership, management, and strategy execution have increased our momentum as specialists in the hot-oil system and heat transfer fluid industries. Our service-oriented crew, with a variety of training, skills, and experience, is equally thrilled about everything Ed brings to the table. We foresee a bright future ahead with our sales continuing to drive upward through Ed’s welcomed direction and assistance.

Ed recognizes the tremendous legacy here at Paratherm, recently guided by his now-retired predecessor, George Schreiber. Ed is already carrying on with a similar work ethic to keep our mission, and his inherited personal mission, of exceeding high customer-service expectations right on track. He continues to emphasize the necessity of sample testing, analysis, and technical operation needs. Under Ed’s guidance, our group will maintain its successful efforts of focusing on old and new customers alike. What he finds best about the company? The fact that we have the background knowledge to connect our customers with the best personnel specific to job requirements, as well as getting the job done right! We continue to pride ourselves on keeping close contact with the OEM’s for equipment such heaters, heat users, and other components, to understand the ins and outs of working closely with our clients and fully understanding their needs.

As we look toward 2016 the team would like to publicly welcome Ed to the Paratherm family and Lubrizol organization. We look forward to what you will bring to the table in the New Year, Ed – congratulations on all of your hard work and success!

What Makes Paratherm Different

How does Paratherm differ? We drew the differences in a 2-minute video — whiteboard style!

And, for those of you who prefer to read, skim, study, and/or critique the written word, here is the voice-over script…

videofrontThe beauty of closed-loop hot-oil technology is that it operates simply and uniformly with little of the maintenance intervention required by alternatives like steam or direct heat. But this low-maintenance characteristic of the technology may leave you in the dark about the operating condition of your application, or what to do when shut down — or slowdown — occurs. Paratherm focuses on keeping you involved in every aspect of the care of your system, from the fluid sale and initial fill, to fluid analysis, troubleshooting and preventive maintenance. Paratherm’s experts will help advise you in the selection of the right fluid for your unique circumstances, and their professional fluid analysis will help guide preventive and predictive maintenance to help improve the system’s operation—and extend its operating life. Unplanned downtime with your application can cost you thousands of dollars every hour that you’re not in production. Therefore, Paratherm utilizes a streamlined logistics flow for fast supply when you need an expedited response. We keep our fluids in stock at several locations throughout the country. When you send us an order, we’re typically able to ship it the same day. When issues with your hot-oil system arise, Paratherm’s Technical Services section is ready with probing questions, and then, troubleshooting tips to help get it working again. You can reach someone by phone for technical assistance or an emergency shipment at any time, including evenings and weekends. At Paratherm, thermal fluid is all that we do, so we have to be the best. For more information on our products and services, simply call or visit our website and fill out our online form.”

To receive a series of emails about Paratherm, and thermal fluid technology in general, visit the Learn About Paratherm page at About Paratherm.

Paratherm Extends Globally

For over 25 years, Paratherm has been exceeding the expectations that come along with our reputation as a premier provider of heat transfer fluids and related expertise in North America.  This is the inherent result of our refusal to compromise on the quality of our products and our genuine dedication to supporting the needs of our customers.  We have proven ourselves with end users and key industry specifiers as the “go-to” support team whenever a mishap or crisis occurs.  As our business capabilities extend globally, our commitment to staying true to the core practices that make us who we are puts Paratherm in a position to become a true world leader in thermal-fluid products & services.


It is a common occurrence for plant managers to reach out to us in a panic for a fast and reliable solution to their thermal-fluid crisis situation.  Paratherm has heard it all, from catastrophic system issues (“somebody” backed the forklift into a valve and there’s 300 gallons of fluid on the floor) to moisture flashes forcing hot fluid to be violently discharged from top of the expansion tank (but how could THAT MUCH water get into my system?!).

Admittedly, the majority of Paratherm’s emergency responses are related to less dramatic situations such as the immediate need for more fluid due to a “routine” maintenance-induced leak or a significant miscalculation of volume on an initial fill.  The point is that Paratherm’s on-call team has the practical experience and dedicated availability that allows us to help get operations back up and running quickly and safely regardless of what has occurred and why.

As you can imagine, emergencies of this nature tend to happen during off-peak hours and/or during the most crucial points in time.   Luckily, Paratherm is committed to serving our customers no matter the time of day (or night for that matter) or their location.  Our customer service and logistics teams will respond regardless if it’s the weekend, middle of the night or a holiday.  We will respond to your call for help, provide any technical feedback necessary over the phone and proceed to contact our warehouse operators and expedited shipping services to urgently supply the necessary volume of heat transfer fluid to avert the crisis and minimize the loss of production.


The reason we can serve our customers during these most crucial times is that we have built and qualified a network of resources that effectively covers the industrialized world.  Quite literally, we have dedicated infrastructure, inventory and support personnel in strategic locations worldwide.

While Paratherm is already well known in the industry for our presence throughout the US and Canada, we also have a global distribution channel and support capabilities that we are quite proud of.  And now, as a result of being acquired The Lubrizol Corporation in 2012, Paratherm has a physical presence in 8 countries, effectively extending the reach of our capabilities across 6 continents.  We are genuinely excited about our recent growth and honored to be serving this industry on a truly global scale where we can continue to aid in its progress and become the leading source of heat transfer fluid solutions and distribution.


To inquire more about our heat transfer fluids, hot-oil systems cleaners, or technical services around the world, please visit Paratherm’s international support page.



Did you know…?

Paratherm now has websites in four languages.





A Few Frequent Questions…With Answers

In Depth Answers to a few Frequently Asked Questions about Heat Transfer Fluids

Heat Transfer Fluid FAQ


The technology of heat transfer fluids is not extremely complicated. It involves liquids, heaters, pumps, flow rates, thermal and physical properties, and a few basic engineering principles.

Still, some of the more curious aspects of the fluids themselves fit with common-sense expectations, while at the same time, some other behaviors of these rascals fit into the non-intuitive category.

As one of the leading publishers of online content and information about the technology and use of heat transfer fluids in the process industries, we get a fair number of questions…

Questions that we are happy to help answer for you and questions that reach both ends of a very broad spectrum. That being said, we have found that there are just a few questions that we hear more than others. In an effort to help guide our customers to the best understanding possible of our products, we have put together a list of the top questions that we receive as well as providing our answers.

Here are three of them, in no particular order. In future blog postings, we’ll add to this list.

If we did not cover a question that you have, please call us! We would love to hear from you.


Q1.    If I can use water why would I want to use HTF?

A1. You probably wouldn’t. We often tell people that they’re better off with water, or water with freeze protection There are, however exceptions:

  • Once you get above 212°F, water boils and thus creates pressure in the system.  Get up to 400° and that pressure becomes substantial.  Non-aqueous heat transfer fluids don’t reach their boiling ranges until above 600°F.  High pressures (think steam) require different equipment, oversight, and maintenance practices for application and process management.
  • Water also freezes at 32°F.  Non-aqueous HTFs will remain liquid down to 0, -10, -35 and lower.
  • Water is also corrosive unless carefully treated and maintained. Not HTF.


Q2. What presentations do you offer?

A2. 5-gallon poly pails, 55-gallon steel drums, 1000-liter skidded totes, 330-gallon totes, and bulk by the gallon in trailer tankwagons or lined ocean 20- and 40-foot containers.


Q3.    Do you have local stock in Silverville?

A3. Paratherm has North American stock in Pennsylvania, Georgia, Arkansas, Indiana, Nevada, and Ontario.  Internationally, in Europe and with distributors in Brazil, Argentina, Mexico, China and Thailand. Not all products are stocked in all locations. Call for specific availability.

Q4.    Do you have a fluid for a) 800 degrees F?  b) 1200°F? c) -100°C?

A4. a) 800°F – We don’t but we know manufacturers that do. This is the limit for commonly used chemistries. Paratherm’s highest temperature product will withstand a film-temperature of 750°F

  1. b) 1200°F – Nobody does.  Rarely used molten salts have performed over 900°F, but they’re quite a challenge to handle and utilize.  We can recommend firms who provide these products, and engineer these systems.
  2. c) -100°C – Paratherm’s lowest goes to -88°C.  For lower temperatures, other technologies such as liquid nitrogen and helium are used.

Was your question answered above? If not, reach out to us by clicking here.

Sampling Part 2: Where and How

Where and how you take a thermal fluid sample can make all the difference in what the test results reveal.

Where a sample should be taken is simple – any location where there is flow and the temperature is above 180°F. A blowdown valve on the pump suction strainer housing is a good bet since that’s where you’ll find the lowest pressure and temperature in most systems.  Piping drain valves will work as long as you purge several containers worth of fluid before taking the sample. Expansion tank or thermal buffer tank drain valves are tempting as a sample location because they are (usually) cool and (mostly) accessible. Don’t do it. For a long list of reasons, it’s almost the worst place to take a sample, just above scooping it off the floor near the pump.

Shows jar, tubing, safety-gloved hands, heat transfer fluid sampling

Taking the Hot Oil Sample

How to take a sample is not quite as simple. Why?  Because improper sampling practices can actually alter the physical characteristics of the sample that will be measured.

Ideally, a sample should be taken directly into a glass sample jar so any contamination or carbon in the fluid is easy to measure. The problem with glass is that it can shatter if the sample is taken too hot (above 250°F).  So if the next heater shutdown isn’t scheduled until the Phillies win the pennant, install 18-24” of ¼” copper tubing on the sample port and bend a loop or two through a bucket of water. This will knock the sample temperature down the couple hundred degrees needed to keep the glass from breaking.  Or take the sample in a clean metal can with a screw top and send that in (just remember to label it with the system name and date).  Do not take the hot sample in a metal “cooling” bucket and then transfer it to the sample container.


Image of Cooling Apparatus, Copper Coils in a Jar

Improvised Fluid Sampling Cooler


See Paratherm’s one-minute video on fluid sampling and testing here —
Heat Transfer Fluid Sampling

Proper Fire Prevention and Safety in Laundries

Laundry fires are among the more common types of fire that occur in institutional settings. They happen with regular frequency—yet, they often can be prevented. It’s a matter of following correct procedures utilizing the best heating systems.  Recently, an entire high school had to be evacuated when one of the laundry dryers caught fire.  Thankfully, no one was hurt; but it could have been much worse, and possibly, could have been preventable.

General rules for safe operations and fire prevention in laundry facilities include use of preventive maintenance (lint removal, cleaning, checking for proper exhaust, etc.), never leaving equipment unattended while in use, proper knowledge of manufacturers’ safety precautions, and never drying materials with rubber or cleaning solvents on them.

One specific way to increase safety in industrial laundries is by specifying a thermal-oil system instead of other heating alternatives.  Not only are there many other benefits—increased productivity, lower operating costs, no system corrosion, less maintenance, fewer environmental hazards, and possibly eliminating the need for a licensed operating engineer—there are also lower risks associated with hot oil.  For example, the Paratherm HE heat transfer fluid has a flash point of 440 degrees and a fire point of 500 degrees, which are higher than the operating temperature of hot-oil ironers.

While the potential for serious fires when using thermal fluid systems is low, it’s important to keep certain things in mind to mitigate risk as much as possible. In general, when using these systems, allow for adequate ventilation, consider using a dike to contain leaks, install isolation and bleed valves, use a properly sized expansion tank, and ensure all insulation is placed and maintained properly.  Also, have your fluid supplier analyze the fluid once a year, or more often if you notice changes in system performance.  Chemical analysis of the hot oil can help pinpoint what’s wrong with the equipment, and can even help prevent future problems and system downtime.

We’ve seen great success with the use of our products in industrial laundries throughout the country. In California, for instance, where the law requires the use of a 24-hr licensed attendant for direct-fired steam systems, but not for thermal fluid systems, hospitals throughout the state have replaced steam with hot oil and specified Paratherm, saving money and staying safe.

Always remain cautious and follow procedures correctly, and the use of thermal fluid systems in laundries will prove highly beneficial and safe.

Air and Heat Transfer Fluids, Part III

How well (or how poorly) does lab testing reflect real-world manufacturing conditions?


In the real world, oxidation of heat transfer fluids occurs in a vented reservoir or expansion tank that for whatever reason is hot (>70°C).

The acids formed in the expansion tank subsequently circulate through the system, decomposing in the heater and producing carbon sludge.

To determine which of several tests is more representative of the real world, several brands of fluid that contain additive packages were tested with the following methods:

  1.  A modified D-2440 test running at 200°C with 15 liters/hour oxygen for 24 hours – essentially an IP-48 (Institute of Petroleum Standards) test.
  2. The standard ASTM D-2440 test running at 100°C with 1 liter/hour oxygen for 164 hours.

Fluid Sample Prepared for Oxidation Testing

The IP-48 test trashed all of the fluids.  Acid Numbers ranged from 1.9 to 3.9 mg KOH/g sample (normal upper limit is 0.4).  Sludge ranged from 14 to 18 weight % (any sludge is a problem).

Glass Tube with Oil Sample and Oxygen Supply Inserted Into Heating Apparatus for IP-48 or D-2440 Tests

Prepared Sample In Heating/Oxygen Apparatus

The results of the D2440 test were more representative of what is expected from additized heat transfer fluids.  Acid Numbers were 0.01 to 0.03 mgKOH/g sample and Sludge was less than 0.1 weight %. We also tested fluids that contained no additive packages using the D-2440.  Acid Numbers were at least 30 mg KOH/g sample and Sludge was at least 1.5 weight %.

Unsubmerged Info Post #1

Business Technology is another area we wish to comment upon occasionally in this blog. We will interpret this term broadly. Tools and techniques to enable business objectives? Sounds good to us.