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Chillers & High Performance HVAC – A Viable Option

Building owners and managers of high-performance buildings have several viable HVAC options that span:

  • Rooftop Units
  • Variable Refrigerant Flow (VRF) Systems
  • Geothermal or Air-Source Heat Pumps …and
  • Chillers

Large commercial buildings and similar facilities have largely considered Chillers as their top choice HVAC system, but stiff competition from new technologies, such as VRF systems have gained prominence in recent years…often because they are considered being easier to install and maintain.


But Chiller manufacturers are quick to respond that chillers offer:

  1. Exceptional energy efficiency as well as greater design flexibility
  2. Better Comfort
  3. Lower Total Life-Cycle Costs

These factors and more…making chillers a well fitting top choice for high-performance buildings.

WHY CHOOSE CHILLERS?

Energy efficiency is a primary concern among owners & facilites managers of high-performance buildings.  In fact, ASHRAE Standard 90.1-2013 shows water-cooled centrifugal chillers with capacities of 400 ton or more to be more efficient than other mechanical cooling technology, including air-cooled chillers, rooftop units, and self-contained systems, said Christine Detz, senior product manager of centrifugal chillers, building technologies and solutions, Johnson Controls Inc.

“Water-cooled chillers can also be designed to function over a wide operating envelope, which means warmer chilled water temperatures and colder tower water can be used for greater energy savings,” said Detz. “Other types of chiller designs, such as air-cooled free-cooling chillers or variable-speed drive (VSD) chillers, can minimize compressor runtime, which helps to increase energy savings even more. In other words, chillers deliver efficiencies, capacities, and options that make them advantageous for buildings designed for exceptional performance — not just for energy savings but also for cost-effectiveness, sustainability, functionality, productivity, and other performance-related criteria.”

Since HVAC systems account for a significant portion of a building’s energy use, chillers can be critical components in improving a building’s overall efficiency, noted Mike Patterson, centrifugal chiller product manager, Trane.

“Chillers also have a low total cost of ownership, offering high-performance building owners cost savings over the lifetimes of the systems. ~ Mike Patterson – Trane

“Well-designed chillers work with HVAC systems to deliver the right temperatures, humidity levels, and ventilation for the space while also prioritizing low operating cost and energy efficiency and ensuring low sound levels and minimal environmental impact.”

Read More – ACHRNews