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NC-v4.1 EAp2:Minimum Energy Performance

District Cooling Systems

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Mark Anthony Ver
Mechanical Design Manager
Makati Development Corporation
LEEDuser Basic Member
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We are using the path for the EA Prerequisite 2 (Minimum Energy Performance),Performance Option 1-Streamlined Path) by modeling purchased cooling from an existing District Cooling Plant. Is there a chance we can pass this Prerequisite if the DCS chiller performances are below the baseline efficiencies?

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Tue, 10/04/2022 - 17:32

Absolutely, as achieving the prerequisite depends on many additional factors besides cooling plant performance (envelope improvements, lighting power reductions, service water heating equipment and potential demand reductions, air-side HVAC measures, etc.). However, if the district cooling plant is less efficient than the Baseline I would consider using ASHRAE 90.1-2016 instead of the streamlined path, since the cooling plant would be modeled as neutral purchased chilled water equally in the Baseline and Proposed models. 

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