In the past two years, the PVF sector has faced a multitude of challenges, that, when combined, created what some call the perfect storm. Concerns among plumbing professionals included supply chain shortages and trade disruption, material price increases, freight inflation, fleet shortages and more.
METUS' Cain White discusses commercial water heating trends.
January 26, 2023
As the United States moves to decarbonize commercial and residential building structures, all eyes turn to heat pumps as a way to increase energy efficiency and reduce carbon emissions for not only space heating but domestic hot water as well.
Prior to the 1980s, all restroom fixtures required manual operation — an aspect that we have since learned coincides with a high exposure to germs and bacteria. In fact, manual faucet and toilet handles harbor anywhere between 107 to 17,976 germs per 10 square centimeters.
Across commercial applications and in different climate zones, the combination of ambient air temperature, humidity and pipes’ surface temperature can have a big influence on the efficiency and economics of chilled water piping systems.
I hope everyone had a happy and safe holiday season and welcomed the new year with family and friends. I always love the blank slate a new year brings, and 2023 is chock-full of new opportunities in the plumbing and HVAC industry.
The processes and systems in place for designing and installing mechanical, electrical and plumbing systems have largely remained the same for decades. Sure, there have been many improvements, from CAD and Revit to press fittings, and hundreds of innovations and systemic improvements.
If you’re my age, you’ll remember Chubby Checker singing the Limbo song. If you’re wondering who and what that is, check out the link. I found myself thinking of that song and how low can you go when reviewing some flat panel radiator pictures.
Many of the topics I have discussed in my column to this point have been about temperature considerations within the supply and return system based on recommendations in the community and right-sizing domestic water piping to reduce the overall volume of water in the building’s piping system.
Almost 80% of all water consumption comes from two groups: No. 1, thermoelectric power, and No. 2, irrigation (farming). Public supply, which includes industrial buildings, commercial buildings and residences, accounts for only 10%.
Somewhere along the way, fossil fuels have gotten a bad rap. Coal, oil, natural gas — you name it. We use fossil fuels for everything from creating electricity, warming the shelters we live in and scooting around town. Burning fossil fuels has become a necessity for our way of life.
As with most things hydronic, there are multiple approaches, and the “best” approach for each installation has to consider cost, aesthetics, access to the existing piping, available wall space and the goal of how the overall system will operate based on existing or newly created zones.
This month marks the 28th anniversary of the founding of PM Engineer magazine. The magazine was started by four individuals: George Zebrowski, my publisher; Tim Fausch, the group publisher; Jim Olsztynski, my editor; and myself, the plumbing/mechanical engineer. Our concept was to create a new magazine addressing the wet side of plumbing and mechanical engineering.
The latest updates in Version 3.0 of the calculator include the addition of more than 50 new pipe sizes, methanol as a fluid choice for geothermal designs, sodium chloride and calcium chloride brine solutions as fluid choices for chilled water, and the new Static Water Column Pressure function.
Grundfos announced the next generation of small circulators for the residential heating market with the introduction of the Grundfos Digital NEXT range — starting with the UPSe 15-58 in late 2022, followed by the release of the new, digital ALPHA 15-58 in early 2023.
Engineered to deliver superior performance and reliability with less maintenance, Ultima Selectronic Touchless Diaphragm Flush Valves are equipped with advanced touchless technology, self-cleaning wiper springs, full mechanical override for use without external power and premium chemical-resistant diaphragm material to help ensure a superior level of water efficiency, cleanliness, reliability and longevity, the company says.