Spring is just around the corner. Restaurants everywhere will be opening up patios so that customers can indulge in outdoor dining to enjoy the weather. Unfortunately, outdoor dining isn't always as pleasant as it might seem when diners have to battle unseasonably chilly weather and bugs. Fortunately for restaurant owners and design engineers, you can create a space that allows for the most enjoyable outdoor dining conditions.
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.
Flower and vegetable greenhouses are not uncommon in NC and SC. While growers in western climates are starting to focus on cannabis, here in the southeastern part of the country, we grow potted plants.
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.
Air curtains can save building owners a lot in both energy and infrastructure costs in retail, industrial and commercial refrigeration applications. But designing air curtains for maximum savings can be a challenge if you don't do it every day.
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.
It's time for another valuable webinar by Schwank on infrared heating and air curtain design. This time, the folks at Schwank are focusing specifically on auto garages and fire stations, which come with their own unique set of challenges.
If you shudder when you think about ice building up on the roof and gutter of a commercial building, you are not alone. Here in the Carolinas, ice can be a tricky foe in the winter months.
We are huge advocates of utilizing VFDs to control AC motors in most instances. It isn't often that we need to run a pump motor at full speed, so we can reduce our energy consumption (lower costs) while being a little kinder to our motors by installing VFDs in our systems. Rarely in life do we encounter anything that is flawless, however, and VFDs are no exception. They do lower our operating costs and can increase system performance, but they also create shaft voltage.
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.