The idea of replacing the boilers in an existing central energy plant can be daunting. This is very high capacity, very large, and very pricey equipment. The renovation can take a long time and require extensive modifications to the existing mechanical room. The logistics of getting the old equipment out and getting the new in is a full project by itself.
Air in a hydronic HVAC system can be a problem, specifically when it comes to the development of corrosive iron oxide. When system components, like pump volutes or expansion tanks, made of cast iron or steel are mixed with oxygen and water, corrosive iron oxide is formed. Commonly known as "black sludge," iron oxide includes magnetite. Magnetite is a naturally occurring brownish-black or black material that is extremely fine and becomes a black, sticky mess inside hydronic systems. Magnetite can get into valves and ECM motors. It can also build up on the surfaces in a boiler or heat exchanger and act as an insulator to reduce heat transfer and system efficiency.
The advent of new products and innovation in the HVAC industry unfailingly starts with the AHR Expo in January. This past week in Atlanta, GA, was no exception. Attendees may have had sore feet, but their enthusiasm didn’t seem to waver on the showroom floor as they engaged manufacturers to show off their latest products.
We're so thrilled to be a part of a thriving commercial building industry in NC and SC. 2018 has brought many challenges and we've worked hard with engineers, building owners, and contractors to bring new (and old) HVAC and engineered plumbing projects to life. A coming new year always inspires reflection and goal-setting. In that spirit, we're sharing the top 10 blog posts of all time while we take some time offline to review topics that may be of new interest in 2019.
Conventional commuter trains are generally limited to a top speed of 60 miles per hour. The train speed is limited by the track condition, curvature, and elevation changes. It takes a lot of energy to move that big, heavy equipment up and down the track. Additionally, the train must overcome rolling resistance between the train wheels and the track to get to higher speeds.
Pumps are serious business in the world of commercial building. Engineers spend vast numbers of hours reviewing usage requirements so that the correct pumps are specified, purchased and installed for building and system needs. However, you may hear months, or even years, later that the building owner is experiencing problems with that same pump you painstakingly selected.
Halloween is here, the scariest night of the year! We all know that HVAC and plumbing engineers are brave, strong, and essentially fearless. After all, they design systems out of thin air, easily troubleshoot annoying problems that haunt other mortals, and relentlessly stick to their guns when specifications are called into question. Engineers are basically the John Wayne of the professional world. They just don't scare easily.
energy (n): Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.
Our obsession with energy, how to harness it and how to use it efficiently is not a new thing. After humans first warmed themselves with the sun, they eventually discovered fire. Early humans used wood fires to cook food and keep warm. Modern humans still do it in home fireplaces, wood-burning stoves and during camping adventures.
Innovation doesn't come easy these days. We're all so busy just getting things done day after day that it's tough to spend the extra time and thought energy into creating better technology, business practices and equipment. Innovation, however, is a critical piece in offering solutions that improve the customer experience.
Hospital HVAC systems work overtime. Every day of the year, around the clock, they must be working properly for patient comfort, maintaining air quality and keeping airborne disease transmission at bay. And, since HAIs (Hospital-acquired Infections) are a hot topic among hospital administrators and the news media, system designers and facilities managers are increasingly pressured to ensure that systems are chosen, installed and maintained with care.