Using data science to quantify CIWH and the suppression effect of air
Data science shows that CIWH can be suppressed by adding a small amount of non-condensible gas.
Easily size steam trap inlet piping
Size steam trap inlet lines to be free draining.
When a burden is lifted
This sermon was based on Mark 1:4–11. It was shared in the online worship service with the Innisfail and Springbank United Church. In our house, the seasons of Advent and Christmas was best described as settling down for a long winters nap. We did not get nearly enough exercise, and we watched too many classic movies.…
Thermal expansion design margin
Introduction Process engineers are concerned about safety, and we spend a lot of our time considering overpressure protection. A simple example is thermal expansion of a blocked in heat exchanger. The cold cold side warms up, the cold fluid expands a tiny bit and the exchanger ruptures. The solution is to install a small PSV…
Twenty years ago today…
I was digging through an old hard drive and found something that made me smile. It was a GIF animation that I created 20 years ago (give or take a few weeks). No, not something with the qualities to go viral. This was the continuation of simulation work that I did for my PhD thesis.…
Sermon: Choices
I lead the worship service in Innisfail on February 16, 2020. The arrangement of the prayers and hymns was part of my LLWL course. Scripture for the service included Deuteronomy 30:15–20. This became the central theme for the sermon. The other reading was 1Corinthians 3:1–9. This provided the “pie or cake” analogy when the early…
Sermon: Different Sides to a Story
Inspired by Exodus 32:7-14. Patient God, your guiding light shines before us, illuminating our faith, Illuminating our path, towards you. Amen. Stories are told from different sides or perspectives. The really important stories are about conflict. It could be a marital disagreement. An argument at school. A law suit. Sometimes we are asked to be…
To VFD or not to VFD: centrifugal pump flow control
A variable frequency drive is often used to control the flow rate for a centrifugal pump. We can save power by adjusting the pump speed to control flow rate. But this method does not work in all applications. This video explains where a VFD works, and where it doesn’t.
Sermon: Speak up
Inspired by Psalm 82. Unceasing God, Your endless power is shown by everything that is True. Your endless forgiveness is shown when we doubt you. Amen Music stirs our emotions. It gives us goose bumps, like Elvis Presley singing How Great Thou Art. Music stirs activism, like Johnny Cash’s Bitter Tears album about the plight…
Sermon: Spare change
I was invited to lead worship service in Olds and Sundre on May 19, 2019. The scripture references are Acts 11:1-8 and Revelation 21:1-6, and the topic is repentance (change). I received enthusiastic feedback from the retired Rev. David Gilchrist. He was very pleased with my desire to weave scientific truth with theological truth. Anything…