Years after an HVAC engineer starts to design closed-loop water systems and then progressively moves up the ladder of engineering success, he can forget and/or overlook many of the issues, concerns, details, opportunities, etc. associated with engineering these systems.
How often does an existing closed loop hot water heating or chilled water cooling system get reused as part of a building renovation project, and/or used to expand the area served by the system coverage to provide additional heating or air conditioning?
Clarify the difference between pressure dependent and pressure independent systems, and then make a deep dive into this TAB process. There’s a lot of science involved, but in the end, steering and tweaking the process may seem more like an art.
Nu-Calgon has launched new 100- and 200-count bulk jars of Gel Tabs™. The company says the tabs are an effective treatment that prevents condensate drain pans from clogging and getting musty odors. Gel Tabs feature a gel locking technology — once activated by condensation, the gel formulation locks the tablet in place until it completely dissolves.
There are no industry standards for rebalancing HVAC water systems, so it got me thinking about the topic and I came up with several questions pertaining to rebalancing chilled water, condenser water, and hot water heating systems.
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