SpinOffs

A blog on what's new, notable, and next in turbomachinery

Posts about Turbines

How Many Pieces of Turbomachinery (Fans, Blowers, Compressors, Turbines, Pumps) Do You Have in Your House? Part 2

How Many Pieces of Turbomachinery (Fans, Blowers, Compressors, Turbines, Pumps) Do You Have in Your House? Part 2

By Daniel V. Hinch, Corporate VP Sales and Marketing, Concepts NREC
May 14, 2021

In my last blog I wrote about visiting a local middle school to give a talk on ‘What is Turbomachinery, and How Does It Work?’   The quiz at the end of the talk was for the students to list all the...

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How Many Pieces of Turbomachinery do You Have in Your House?  (and a Pop Quiz)

How Many Pieces of Turbomachinery do You Have in Your House?  (and a Pop Quiz)

By Daniel V. Hinch, Corporate VP Sales and Marketing, Concepts NREC
Apr 16, 2021

On occasion I’m invited to a local middle school to give a talk to one of the science classes about ‘What Is Turbomachinery, and How Does It Work?’.   I teach in several of the turbomachinery design...

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Entropy Happens… Deal with It!

Entropy Happens… Deal with It!

By Francis A. Di Bella, P.E.
Jul 19, 2019

If there’s one thing good about sitting in snarled traffic in Boston, it’s that you get to see some very original bumper stickers. The most recent bumper sticker I saw was probably the strangest one,...

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Supercritical CO2, CFD, Alligators & Gladiators – Thoughts & Trends from Turbo Expo 2019

Supercritical CO2, CFD, Alligators & Gladiators – Thoughts & Trends from Turbo Expo 2019

By Mark R. Anderson
Jul 5, 2019

I recently got back from my favorite annual conference: ASME’s Turbo Expo. This year, someone thought it would be a good idea to hold it in Phoenix, Arizona…in the summertime.  While that’s not the...

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In Thermodynamics: “What Goes Around-Comes Around” is a Good Thing

In Thermodynamics: “What Goes Around-Comes Around” is a Good Thing

By Francis A. Di Bella, P.E.
Jun 28, 2019

When discussing the efficiency of transforming one form of energy to another, circularity is the way to go. Anyone who has spent even a little time studying engineering thermodynamics knows that the...

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Abstracts From Papers Presented at Turbo Expo 2019

Abstracts From Papers Presented at Turbo Expo 2019

By Barbara Shea
Jun 21, 2019

Wow, Concepts NREC had a lot going on at this year's ASME Turbo Expo 2019 in Phoenix, AZ! We held our North American CAE User Group Meeting, spoke to over 200 people at our booth, chaired several...

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Top Summer Vacations for Turbomachinery Engineers

Top Summer Vacations for Turbomachinery Engineers

By Barbara Shea
Jun 14, 2019

Summer is almost here, at least in my hemisphere, so here are some of the best places around the world people in the turbomachinery industry might find interesting! Know of another? Share your...

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The Ultimate Fluid Model: Non-Equilibrium Modeling

The Ultimate Fluid Model: Non-Equilibrium Modeling

By Mark R. Anderson
May 24, 2019

In this blog series, I covered a lot of thermo-fluid options in engineering analysis, from the simplest perfect gas (When Perfect is Good Enough – Perfect Gas Models) and ideal liquid, (Fluid...

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The Tesla Turbine – A Solution Looking for the Right Problem

The Tesla Turbine – A Solution Looking for the Right Problem

By Barbara Shea
May 17, 2019

The great engineer, Dr. Nikola Tesla, is best known for his work with alternating current (AC) electricity, but, did you know that he patented a bladeless type of turbomachinery in 1913? Called the...

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Going Through a Phase – Modeling Phase Change with Cubics

Going Through a Phase – Modeling Phase Change with Cubics

By Mark R. Anderson
Apr 26, 2019

When fluids undergo a phase change (see Phase Change - Make Mine a Double), it typically has a very significant effect of the flow behavior and energy level of the system.  Some examples of this are:...

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Water & Turbomachinery - Two Great Things, That Go Great Together

Water & Turbomachinery - Two Great Things, That Go Great Together

By Andrew Provo
Mar 22, 2019

I work with water a lot here at Concepts NREC. Water is frequently the fluid that flows through various types of rotating equipment we design to either release or store energy. Mankind’s fascination...

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What's Better than Perfect? Semi-Perfect Gas Models

What's Better than Perfect? Semi-Perfect Gas Models

By Mark R. Anderson
Mar 8, 2019

In a previous blog, Fluid Phenomena Primer: Energy Versus Temperature, Specific Heat, I explained the behavior for gas phase fluids and how the temperature is affected at high energy levels.  In...

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How the Design of a Wind Turbine Differs from Other Types

How the Design of a Wind Turbine Differs from Other Types

By Kerry Oliphant
Mar 1, 2019

Wind power generation is rapidly growing worldwide, and with that growth, demand for wind turbine design engineers is also growing.  However, an engineer who has experience designing turbines in most...

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7 Turbomachinery Themed Valentine’s Day Cards – Which is Your Favorite?

7 Turbomachinery Themed Valentine’s Day Cards – Which is Your Favorite?

By Barbara Shea
Feb 8, 2019

Valentine’s Day is February 14, and while some cynics refer to it as a “Hallmark holiday”, most people commemorate the day in some way. One of the biggest challenges is finding a card that perfectly...

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Increases in Temperature Envelopes and Its Implications on Material Selection

Increases in Temperature Envelopes and Its Implications on Material Selection

By Arsalan Adil
Feb 1, 2019

Temperature envelopes in the turbomachinery industry are constantly increasing as the state of the art evolves in pursuit of better performance. This means engineers need to design compressors with...

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Specific Speed Demystified

Specific Speed Demystified

By Mark R. Anderson
Jan 11, 2019

In my blog Flow Coefficient and Work Coefficient, I outlined the basic concept behind the flow and work coefficient. These nondimensional parameters are widely used to characterize axial and radial...

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Reverse Engineering - Going from Part to Art

Reverse Engineering - Going from Part to Art

By Sharon Wight
Dec 7, 2018

Have you ever needed to know the exact geometry of a compressor that has been running for years in your process plant? Perhaps you need to analyze how it would perform if the process fluid had to be...

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20 Great Gifts for Engineers from $10 to $2 Million

20 Great Gifts for Engineers from $10 to $2 Million

By Barbara Shea
Nov 23, 2018

Gifts for Engineers can usually be segmented into a few categories: Things you have to put together, science fiction, gaming, new technology, and witty phrases printed on stuff. A Google search of...

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Site Selection for Low- and No-Head Hydroelectric Pilot Plants

Site Selection for Low- and No-Head Hydroelectric Pilot Plants

By Andrew Provo
Nov 15, 2018

According to the 2014 Oak Ridge National Laboratory study on untapped hydro-power potential, there is nearly 65 GW of untapped power in America’s waterways. The vast majority of this power remains...

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Why are Turbine Blades Twisted?

Why are Turbine Blades Twisted?

By Dan Hinch
Oct 12, 2018

It’s a straightforward question, but many turbomachinery engineers can’t easily explain the physics behind blade twist. Some shorter high-pressure turbine (HPT) blades appear nearly 2D in shape...

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Investing in Designing Gas Turbines for Power Generation

Investing in Designing Gas Turbines for Power Generation

By David Teal
Sep 14, 2018

Gas turbines (or GTs) are important in the power generation sector due to their high efficiency, cleaner emissions and faster startup than old coal-powered plants. These power generators can range...

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Yellow Ropes

Yellow Ropes

By Jim Miller
Aug 17, 2018

In the mid 1980’s, while serving in the Canadian Air Force, I had the good fortune, on one of my many adventures, to fly into Sondrestrom Air Base in Greenland. The Base is at the head of a beautiful...

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The Challenges & Cures of CFD Solution Failures

The Challenges & Cures of CFD Solution Failures

By Mark R. Anderson
Aug 3, 2018

Computational fluid dynamic analysis (CFD) has become a standard part of the turbomachinery design process. Within Concepts NREC’s Agile Engineering Design System, FINE/Turbo, from our Partner NUMECA...

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Preliminary Sizing of Supersonic Turbines with Partial Admission for Best Performance Using AXIAL™

Preliminary Sizing of Supersonic Turbines with Partial Admission for Best Performance Using AXIAL™

By Oleg Dubitsky
Apr 27, 2018

Many energy recovery, drive cycles (Organic and Steam Rankine cycles) and rocket propulsion cycles require the use of a turbine that operates at low volumetric flow and high-pressure ratio....

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Reverse-Brayton Cryocoolers

Reverse-Brayton Cryocoolers

By Dimitri Deserranno
Apr 19, 2018

Perhaps it is because Spring is so slow to come this year, but I have been thinking a lot about refrigeration and the different types of systems there are. Refrigeration systems that operate below...

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Optimizing the Radial-to-Axial Duct Geometry for a Gas Turbine Radial Compressor Impeller

Optimizing the Radial-to-Axial Duct Geometry for a Gas Turbine Radial Compressor Impeller

By Oleg Dubitsky
Apr 13, 2018

Many gas turbines with radial compressors utilize a radial-to-axial inlet duct upstream of the first compressor stage. Aside from the fact that flow in the duct generates aerodynamic losses, the flow...

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Flow Coefficient and Work Coefficient Applications

Flow Coefficient and Work Coefficient Applications

By Mark R. Anderson
Mar 29, 2018

In my last blog, I explored the concept of the flow and work coefficient.  In this blog, I will explore the practical application of the two parameters in machine selection and optimization. 

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Reaction Versus Impulse Type Turbomachinery

Reaction Versus Impulse Type Turbomachinery

By Mark R. Anderson
Mar 8, 2018

The universe of turbomachinery consists of many different design concepts that are radically different from one another. Each class of machine has a particular flow and power range that is best...

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Ground Source Heat Energy Storage for Power Generation

Ground Source Heat Energy Storage for Power Generation

By Francis A. Di Bella, P.E.
Nov 15, 2017

Have you ever been to the beach on a very hot day? Then I am sure you noticed that the sand is very, very hot, uncomfortably so. Congratulations, you have had first-hand experience with ground source...

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Getting your Bearings – Challenges of Selecting the Right Bearing for the Job

Getting your Bearings – Challenges of Selecting the Right Bearing for the Job

By Kevin Fairman
Sep 15, 2017

Bearing selection is an interesting concept. Can you really select the bearing – or does the bearing select you? It seems that we have come to understand where to use bearings by where they have been...

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Optimization of Cycle Parameters, Fuel Consumption, and Weight of a Turboshaft Engine Using 1D Design Tools

Optimization of Cycle Parameters, Fuel Consumption, and Weight of a Turboshaft Engine Using 1D Design Tools

By Oleg Dubitsky
Jun 1, 2017

New engine development is a costly endeavor and making the right decisions early in the engine design is extremely important. It requires multi-disciplinary consideration of the engine thermodynamic...

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Multidisciplinary Optimization of Turbocharger Turbine with Non-Radial Blades for Two Operating Points

Multidisciplinary Optimization of Turbocharger Turbine with Non-Radial Blades for Two Operating Points

By Dr. Nicholas C. Baines and Oleg Dubitsky
May 25, 2017

The turbine of an automotive turbocharger is subject to a wide and demanding range of requirements and constraints. High efficiency is required to reduce the pumping work of the engine that can make...

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Designing Gas Turbines - It Really Requires Rocket Science

Designing Gas Turbines - It Really Requires Rocket Science

By Barbara Shea
Feb 16, 2017

Engineers who design aircraft engines face a conundrum. Gas turbines in aircraft engines have to operate at very high temperatures for thermal efficiency and power output. These high temperatures put...

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Agile Engineering Design System for Steam and Organic Rankine Cycle Turbines

Agile Engineering Design System for Steam and Organic Rankine Cycle Turbines

By Concepts NREC
Sep 1, 2016

Expanding design capabilities for advanced high-performance turbines for steam and organic Rankine cycle power generation is a constant area of focus in developing Concepts NREC’s Agile Engineering...

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