The chilled water is generated in the central plant and then transported through a piping network to cooling coils (air handlers), or to point of end-use in processes. Facility directors and energy managers are always chasing multiple goals - satisfying all the customers, maintaining a high-level of reliability and minimizing energy spends with varying demand and weather. Therefore, many modern plants employ a good chiller optimization package such as Hudson Technologies’ SMARTenergy OPS® in conjunction with Building Automation Systems (BAS) to optimize the chiller plants.

Have you ever woken in the middle of the night in a cold sweat wondering if your plant is using more energy than it should, putting you at a disadvantage as compared to your competition? Even if your energy monitoring or energy management system is in place you may not have the required insight to improve your performance and keep you competitive.
Absorption chillers have been around for more than 75 years, with several thousand chillers operating successfully all over the world today. Yet myths about cost, operation and performance surround this technology, particularly in North America. Look beyond the myths and you’ll discover absorption cooling technology can be efficient, cost-effective, flexible and reliable.
Xcel Energy is headquartered in Minneapolis, Minnesota, and is the largest electrical energy provider in Colorado. The company recently upgraded its refrigerant monitoring systems at its Chilled Water building in downtown Denver, creating an efficient and reliable method for continuous monitoring of refrigerant used in 16 chillers in different locations – while supporting the need for safety, system performance, and reductions in energy and refrigerant costs.
For decades, evaporative cooling has been the principal means to regulate the temperature of buildings. And with more than 50% of total building water usage dedicated to heat transfer, there are major opportunities for water savings.
Cooling towers can use several power transmission technologies, including a gear drive, belt drive, direct drive, and electronically commutated (EC) drive. Each has advantages and disadvantages. The proper selection strikes an appropriate balance of initial cost versus operating costs.
Cooling large buildings typically requires the use of air- or water-cooled chillers that produce chilled water, which then cools the air. About 39% of buildings over 100,000 square feet use chilled-water systems employing various refrigeration compressor designs.
How often do you think about your cooling tower or the fill that provides the cooling engine for your process? Unfortunately, if you’re like many plant operators, your cooling tower is but one piece of equipment in your large facility, and its ranking on your priority list is probably lower than many other expensive and more intricate pieces of equipment in your plant.
Snail mail. Rolodexes. Boomboxes. We’ve given up the familiarity of the past for the promise of the future. But is the same happening in the chiller industry? Is the push for lower global warming potential (GWP) refrigerants changing the industry as we know it? In some ways, yes. But, in the United States in particular, the change may be more gradual than it appears at first glance.
Commercial buildings in the United States will be looking to replace centrifugal chillers as many are near or past their median replacement life of 25 years. This becomes apparent when you consider nearly half of all commercial buildings were constructed before 1980 according to data from the U.S. Energy Information Administration. The same can be said of buildings on American college campuses, which according to the same data, more than half of which were built before 1990. Bottom line — if you’re a commercial building owner or a facility manager/director in the United States, you may need to replace a chiller.
Water treatment professionals understand that if applied correctly, solid-form products can be just as effective of a method to protect cooling and heating systems from corrosion and scale as their liquid counterparts. And with the additional sustainability, safety, ease of use, and shipping cost benefits of solids, hundreds of facilities are transitioning to these products each year world-wide.