Instant Online Heat Transfer Fluid Comparisons

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Pressure drop and heat transfer coefficient calculations on the web.

In an online form, enter a temperature and flow-rates, select a heat transfer fluid or plain water, and the Paracalc™ software will instantly generate a spreadsheet reporting pressure drop, heat transfer coefficient, and Reynolds number across a range of flow rates and fluid velocities. Hit the back button, select a different fluid, and instantly see how that fluid will perform under the same conditions.

On the web at is a newly updated tool for engineers and designers, and thermal-fluid system users. Paracalc Online 2.0 is a web-based live service available now.

No downloading or installation is necessary. The software will provide data on Paratherm fluids as well as water. The program has 2 modules; Module 1 provides physical property data versus temperature, and includes density, specific gravity, specific heat, thermal conductivity, viscosity and vapor pressure.

Module 2 generates a custom table reporting pressure drops, flow velocity, heat transfer coefficient and Reynolds number across a customized range of flow rates and pipe diameters. Both modules work with a comprehensive choice of units within the standards of both SI and English systems—including temperatures in Fahrenheit as well as Celsius.

The software, available online since 2001, has recently been updated to provide calculations for Paratherm’s newer heat transfer fluids. Paracalc Online will now deliver properties versus temperature, pressure drops and heat-transfer-coefficient data for seven Paratherm fluids, at temperatures as low as -100°C (Paratherm CR™ Heat Transfer Fluid) and as high as 343°C (Paratherm NF® Heat Transfer Fluid.)

For plain water, the software will deliver values for temperatures from 0°C to 315°C.

About Paratherm Corporation:

Paratherm’s Sludgebusters™ team provides advice, expertise, and analysis for thermal fluid systems and heat transfer fluids. Through their relationships with heater and equipment manufacturers, and their focused attention on the needs of customers, Paratherm engineers deliver smoothly operating systems and applications, and maximum production, to processors that choose Paratherm. Manufacturing and marketing non-toxic, high efficiency heat transfer fluids (also called thermal fluids or hot oils) since 1988, Paratherm Corporation currently has a customer base of over 3,000 users, largely in the chemical, food processing and plastics industries. The line consists of nine products performing at temperatures from -148° F to +650° F.


Andy Andrews

Paratherm Corporation

4 Portland Road

West Conshohocken, PA

19428 USA

Phone 800-222-3611

or (610) 941-4900

fax 610-941-9191


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Andy Andrews
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