Try DTC Courses Before You Buy for $50

With our Test Drive and Pay-As-You-Go options, you can try out our courses for only $50 before you buy the full course. We’re so sure you’ll like what you see that there’s no obligation beyond your initial purchase. “Just finished the intro and it was great! I was skeptical about subscribing to anything and was […]

A Cold Blast from the Past: Beijing Olympics Cooled by Natural Refrigerants

Since the 1980’s scientists have been concerned about the effects refrigerants have on the environment. R-11 and R-12 are wonderful refrigerants that provide for efficient cooling systems, but they destroy ozone in the upper atmosphere. With the Montreal Protocols, their use in refrigeration systems have been banned. R-22 and later R-134a were used as substitutes. […]

Attention HVAC Engineers!

PE Exam Review for HVAC & Refrigeration

WATCH OUR VIDEO! Dr. Tom’s Classroom now offers an HVAC & Refrigeration PE Exam Review, specifically developed for the CBT format exam. It had long been a goal at DTC to add an HVAC course to our line up. After completing our new Machine Design & Materials and Thermal & Fluid Systems Reviews for the […]

Researchers Create a Better Carbon Dioxide Filter

Scientists at the University of Delaware have developed a method to efficiently remove carbon dioxide from the air using technology from fuel cells and, in doing so, help solve a roadblock to adopting fuel cell technology. The research team work with hydroxide exchange membrane (HEM) fuel cells that convert hydrogen to water and produce electricity. […]

Start for Only $50 and Pay-As-You-Go

With our Pay-As-You-Go option, you can now try out our courses for only $50 before you buy the remaining course modules. We’re so sure you’ll like what you see that there’s no obligation beyond your initial purchase. Just buy the next course module when you’re ready for it – a nice way to spread out […]

Dog Saved After Drone Carrying Sausage Lures Her To Safety

We keep learning about new ways drones can be useful. In a recent dog rescue in England, the creative rescuers used a drone, with sausages attached, to lure a dog to safety and out of the way of a rising tide on mud flats. – Daniel Findley, DTC Engineering Economics Instructor PE Exam Prep That Works!Pay Up […]

DTC – Flexible to Fit Your Schedule and Budget

All DTC courses are designed to give you the maximum flexibility in working your PE Exam preparation into an already busy schedule. We keep lessons short and focused, we provide you with detailed study plans, and we make it all available 24/7. And we offer three flexible payment options to make becoming a PE as […]

What Color is Your Hydrogen?

A recent Infographic by Jeffrey Winters, Editor-in-Chief of ASME magazine, highlighted how the different types of hydrogen are identified using color codes. The different hydrogens are not actually different colors, all are colorless, however since it must be manufactured, the different processes have been given a color code. For example, “brown” hydrogen is the least expensive to […]

FEATURED TESTIMONIAL – “Save Hundreds and Get a Better Course”

“I followed the course, watched the lectures, worked the problems, did the quizzes, submitted questions on the online forums and then I passed the test. There were many nights that I was worn out and it took everything I could muster just to stay awake to watch a lecture or do a problem, but I was […]

Mad Max Rest Stop

Watch Video For those of you lucky enough to drive between the futuristic cities of Dubai and Abu Dhabi in the United Arab Emirates, you’re in for a treat if you need to refuel, eat some food, or de-stress. A Mad Max themed rest area, known as “Last Exit” is a great option with food trucks, […]