Lowering Carbon & Reducing Water Use with Heat Recovery Chillers

A Low Carbon, Low Water Campus Heat Recovery Chiller Strategy for Moderate Climates - Henry Johnstone, GLHN Architects and Engineers  Three Applications of Heat Recovery Chillers supporting LTHW at UVA - Paul Zmick, University of Virginia A Low Carbon, Low Water Campus Heat Recovery Chiller Strategy for Moderate Climates - Henry Johnstone, GLHN Architects and Engineers Heat recovery chiller technology offers to substantially reduce both the carbon emissions and water consumption footprints of district heating-cooling plants by offsetting site fossil fuel combustion and cooling tower water consumption. Practical obstacles associated with its’ performance constraints and initial capital and operating expense have often prevented its application. This situation may be improving. This presentation provides a case study of opportunities and challenges involved in applying heat recovery chiller technology to existing central heating and cooling districts.  Three Applications of Heat Recovery Chillers supporting LTHW at UVA - Paul Zmick, University of Virginia This presentation is a case study examining three unique central plant heat recovery chiller applications connected to three unique low-temperature hot water loops.  The first is an example of new construction (plant, distribution, and connected load) based on a design temperature of 135F and multiple small heat recovery chillers.  The second is a single large heat recovery chiller being installed in series with the existing main heat plant boilers connected to over 10M SQFT of existing buildings based on a design temperature of 170F.  The third is the new installation of second-generation of heat recovery chillers in an existing plant supporting both existing and new construction with a design temperature ranging from 140 to 180F.

Speakers.
Paul Zmick, Senior Associate Director  UVA Energy & Utilities, University of Virginia
Henry Johnstone, President & Director, Mechanical Engineering, GLHN Architects and Engineers