When I started building systems commissioning 25 years ago, it did not take long to figure out that more was needed to confirm that the commissioned systems were complete and ready for testing than just the general contractor’s word for it.
The forward march of progress in terms of basic equipment and controls sophistication has made the combination of condensing and non-condensing boilers more attractive than ever. Still, you can’t just grab one of each and expect miracles.
Reviewing documents, sizing equipment and systems, and sketching on the go: got an app for that? Also, we compare tablet vs. phone and the advantages or worries that come with taking your tablet into imperfect field conditions. How do you use yours?
After a brief hiatus, we are resuming exploration of the tablet as engineering tool. In the first article, we examined the energy study and how the tablet can facilitate tasks such as annotating existing documents, taking notes, and storing and accessing documents.
When the facilities management staff of Mount Vernon Hospital completed an assessment of its central chilled water plant, it became evident that while the original chillers had served the hospital well since its opening in 1975, they were ready for replacement.
The U.S. Defense Department is pursuing energy efficiency and other measures to lower its energy bill and increase its energy security, officials told the U.S. House Armed Services Committee in late March. The department spends $4 billion a year on energy, Dorothy Robyn, deputy undersecretary of defense for installations and environment, testified at the hearing on planned energy investments. DOD operates more than 300,000 buildings, which have an environmental footprint six times greater than the General Services Administration and three times larger than Walmart, Robyn said.
Retrieving every last bit of performance from the system while stopping short of the surge line is no small feat. Dig into sizing, tower selection, chilled water loads and stability, and condenser water management to leave no efficiency stone unturned. Read more in April issue