Hydronic Piping Systems

Hydronics is the use of water as the heat-transfer medium in heating and cooling systems. A hydronic piping system is used to circulate chilled or hot water with the connections between the piping and the terminal units made in a series loop. The terminal units are the heat exchangers that transfer the thermal energy between … Continued

HVAC Preventative Maintenance is Not a Luxury

HVAC systems are the life-blood of any building, and when a malfunction occurs it affects all of the occupants.  Imagine you work within a large office building that has poor ventilation. The lack of air movement, or exchange, can cause “stale air” which in turn allows germs to move freely around the space, potentially causing … Continued

Proper Cooling Tower Piping Design

Open cell cooling towers are heat removal devices that operate on the principle of evaporative cooling and are used to dissipate waste heat from a chiller to the atmosphere.  A well-designed piping system is essential for their proper operation, including the cooling tower bypass system. With an open cell cooling tower, heat laden water is … Continued

The Advantages of Using Chilled Water Systems

Large commercial buildings that require a substantial amount of cooling often use water chillers because they are cost effective and there is a reduced hazard by not having refrigerant piped all over the building. These systems work by pumping cool water throughout the building. Cool air is then transferred to the occupied spaces by terminal … Continued

Is a Variable Refrigerant Flow System the Right Choice for Your Facility?

Variable Refrigerant Flow (VRF) systems are fairly new to the U.S., but have been used in Japan, Europe and South America for nearly three decades. With these HVAC systems the compressor unit uses variable refrigerant flow and is controlled by a variable-speed drive. VRF systems (also known as VRV – Variable Refrigerant Volume) use refrigerant … Continued

Modern Efficient Heating with Linkageless Burner Control Systems

Many boilers that are still in operation today continue to use an antiquated mechanical linkage system in which a single common actuator is used in conjunction with mechanical linkages to position both the air and fuel rates at the same time. This arrangement is not only inherently limited by design, but is also subject to … Continued