Privacy Policy

CRTech Privacy Policy

Last updated May 22, 2018

This privacy policy discloses the privacy practices for and other websites operated by C&R Technologies, Inc. (“CRTech”). This privacy policy applies solely to information collected by these web sites, through email communications, and through sales transactions. It will notify you of the following:

  1. What personally identifiable information is collected from you through the web site, how it is used and with whom it may be shared.
  2. What choices are available to you regarding the use of your data.
  3. The security procedures in place to protect the misuse of your information.
  4. How you can correct any inaccuracies in the information.

We are the sole owners of the information collected on this site. We only have access to/collect information that you voluntarily give us via email or other direct contact from you. We will not sell or rent this information to anyone.

What Information is Collected

The following personal data may be collected. To the extent that applicable data protection laws require special treatment of specific types of personally identifiable information, CRTech shall take such measures as are necessary for compliance with these laws.

  • Email communication data: full name, job title, department, company name, email address, phone number
  • Account registration data: username, email address, full name, company name, company physical address, CRTech Customer ID, passwords (encrypted)
  • Support services data: full name, email address, phone number, company name, CRTech customer ID, license information, product name(s) and version levels, computer operating system, support ticket information and models you may send us
  • Licensing data: for certain types of licensing we collect information to pair license IDs with particular users
  • Transaction data: your contact information, products you are interested in or own, billing information, billing and shipping addresses
  • General web data collection: When submitting information through our website, we acquire information which is used to validate submissions which may include IP address and location data. Cookies and similar tracking technologies are also used for business analytics (web traffic and statistics) and email campaign statistics.

How Information is Used and Shared

CRTech staff will use your information for the following purposes:

  • To respond to you, regarding the reason you contacted us.
  • Send you occasional emails about product updates and product related notices
  • Send you occasional emails for product training and other services
  • Providing annual maintenance quotes
  • To identify you for the purposes of ensuring compliance with the terms of our license agreements products and services you purchase from us
  • To identify you for the purposes of ensuring export compliance
  • To identify you and verify that both the product and the your use of it are appropriately licensed

We will not share your information with any third party outside of our organization, other than as necessary to fulfill your request, e.g. to ship an order.

Unless you ask us not to, we may contact you via email in the future to tell you about specials, new products or services, or changes to this privacy policy.

Your Access to and Control Over Information

You may opt out of any future contacts from us at any time. You can do the following at any time by contacting us via our contact information:

  • See what data we have about you, if any.
  • Change/correct any data we have about you.
  • Have us delete any data we have about you.
  • Express any concern you have about our use of your data.


We take precautions to protect your information. When you submit sensitive information via the website, your information is protected both online and offline.

Wherever we collect sensitive information (such as credit card data), that information is encrypted and transmitted to us in a secure way. You can verify this by looking for a closed lock icon at the bottom of your web browser, or looking for "https" at the beginning of the address of the web page.

While we use encryption to protect sensitive information transmitted online, we also protect your information offline. Only employees who need the information to perform a specific job (for example, billing or customer service) are granted access to personally identifiable information. The computers/servers in which we store personally identifiable information are kept in a secure environment.


CRTech’s web site contains links to other sites. Please be aware that we are not responsible for the content or privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of any other site that collects personally identifiable information.

Data Retention Period

We retain your data only as long as is necessary for the purposes set out in this Privacy Policy, or as permitted or required by applicable laws. At the end of the applicable retention period, we will securely delete your data.


Our Privacy Policy may change from time to time and all updates will be posted on this page.

If you feel that we are not abiding by this privacy policy, you should contact us immediately.

dispersed vs. coalesced front

Tuesday, June 26, 2018, 1-2pm PT, 4-5pm ET

This webinar describes flat-front modeling, including where it is useful and how it works. A flat-front assumption is a specialized two-phase flow method that is particularly useful in the priming (filling or re-filling with liquid) of gas-filled or evacuated lines. It also finds use in simulating the gas purging of liquid-filled lines, and in modeling vertical large-diameter piping.

Prerequisites: It is helpful to have a background in two-phase flow, and to have some previous experience with FloCAD Pipes.

Register here for this webinar

FloCAD model of a loop heat pipe

Since a significant portion of LHPs consists of simple tubing, they are more flexible and easier to integrate into thermal structures than their traditional linear cousins: constant conductance and variable conductance heat pipes (CCHPs, VCHPs). LHPs are also less constrained by orientation and able to transport more power. LHPs have been used successfully in many applications, and have become a proven tool for spacecraft thermal control systems.

However, LHPs are not simple, neither in the details of their evaporator and compensation chamber (CC) structures nor in their surprising range of behaviors. Furthermore, there are uncertainties in their performance that must be treated with safety factors and bracketing methods for design verification.

Fortunately, some of the authors of CRTech fluid analysis tools also happened to have been involved in the early days of LHP technology development, so it is no accident that Thermal Desktop ("TD") and FloCAD have the unique capabilities necessary to model LHPs. Some features are useful at a system level analysis (including preliminary design), and others are necessary to achieve a detailed level of simulation (transients, off-design, condenser gradients).

CRTech is offering a four-part webinar series on LHPs and approaches to modeling them. Each webinar is designed to be attended in the order they were presented. While the first webinar presumes little knowledge of LHPs or their analysis, for the last three webinars you are presumed to have a basic knowledge TD/FloCAD two-phase modeling.

Part 1 provides an overview of LHP operation and unique characteristics
Part 2 introduces system-level modeling of LHPs using TD/FloCAD.
Part 3 covers an important aspect of getting the right answers: back-conduction and core state variability.
Part 4 covers detailed modeling of LHPs in TD/FloCAD such that transient operations such as start-up, gravity assist, and thermostatic control can be simulated.