Engineered Systems - March 2009 - (Page 28)

Application Checklist Educational Facility Dust Collection Exhaust and Makeup Air System The following system analysis and analytical scorecard can be used to assess the use of a wood shop’s dust collector system interlocked to the space makeup air system. The approach is based in part on the 2008 ASHRAE Handbook — HVAC Systems and Equipment, Chapter 1, “System Analysis and Selection Process” and the 2007 ASHRAE Handbook — Applications, Chapter 6, “Educational Facilities.” In addition, our scoring is based on our own design, construction, commissioning, TAB, and building management experience. Scoring may differ based on project location, current costs, and local engineering experience. The design intent of the dust collector exhaust (DCE-1) and associated makeup air terminal (VAVRH-1) is to provide industrial exhaust of the woodcutting machines while maintaining space comfort during the heating season and the A/C season. This month’s “Back2Basics” focuses on the building/energy management portion of the system application while the “HVACR Designer Tips” focuses on project closeout. The analysis and selection of the optimum DCE-VAVRH system for a speciﬁc project can be determined through available industrial exhaust system applications and methods. This assessment should be part of optimizing energy performance when pursuing LEED® project certiﬁcation, as well as other high performance grant programs. Application Notes • Zero to 10 score, with 10 being excellent and 0 being poor or not ✓ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[10] . [0] . [8] . [0] .[10] . [0] . [5] SUSTAINABLE DESIGN SCORECARD (MAXIMUM SCORE = 130) • Fundamental prerequisite commissioning • Fundamental refrigerant management . . • Optimize energy performance . . . . . . • Renewable energy . . . . . . . . . . . . • Enhanced commission . . . . . . . . . . • Enhanced refrigerant management . . . • Measurement and veriﬁcation: . . . . . . . . . . . . . . . . . . . . • BAS trending • Remote monitoring • Space, equipment, and energy monitoring • Local and regional material . . . • Minimum IAQ performance . . . • Emissions control . . . . . . . . • Increase ventilation effectiveness • Controllability of systems . . . . • Thermal comfort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [4] [7] [7] [5] [8] [8] Total score: . . . . . . . . . . . . . . . . . . . . . . 72 SUSTAINABLE BUILDING MANAGEMENT SCORECARD (MAXIMUM SCORE = 60) • Assets barcoded . . . . . . . . . . . . . . . . . . . . . .[10] • Approximate number of workorders annually . . . . . . . [8] • Serviceability outside occupied space . . . . . . . . . . . [9] • Serviceability during normal working hours . . . . . . . . [8] • Ease of replacement at end of useful service life . . . . .[10] • Continuous trending, benchmarking, and course correction[5] Total score: . . . . . . . . . . . . . . . . . . . . . . 50 applicable. • Based on a 4,000-cfm DCE-1 with 4,000-cfm VAVRH-1. SYSTEM ANALYSIS AND SELECTION SCORECARD (MAXIMUM SCORE = 120) • Space temperature control. . . • Space humidity control. . . . . • IAQ . . . . . . . . . . . . . . . • Ventilation control . . . . . . . • Equipment airborne noise . . . • Equipment radiant noise . . . . • Useful service life of equipment • Equipment room requirement . • System constraints. . . . . . . • First cost . . . . . . . . . . . . • Operating cost . . . . . . . . . • Maintenance cost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [7] [0] [8] [8] [7] [7] [8] [0] [5] [8] [8] [8] Total HVAC system application score is 196 points out of a possible 310 points, for a rating of 63%. McKew is an HVAC commissioning engineer in the Building Solutions Group at RDK Engineers. If you have any comments, suggestions, or questions regarding this designer checklist, contact Amanda McKew at amckew@rdkengineers.com. Total score: . . . . . . . . . . . . . . . . . . . . . . 74 28 En g i neer ed Sy stem s March 2009

Table of Contents Feed for the Digital Edition of Engineered Systems - March 2009

Engineered Systems - March 2009 Contents Editor’s Note Back2Basics Case In Point Commissioning Building Automation HVACR Designer Tips Application Checklist Teaching An Old School New Tricks Basics For Absorption Chillers A New Haven For Sustainable Schools Glossary Classifieds Advertiser Index Tomorrow’s Environment

Engineered Systems - March 2009

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