Tuesday, January 31, 2017: 9:45 AM-11:00 AM
Commercial and Industrial IAQ
Chair:
Christopher O. Muller, Purafil, Inc.
Technical Committee: 2.3 Gaseous Air Contaminants and Gas Contaminant Removal Equipment
Sponsor: SSPC 62.1
CoSponsor: TRG4 Indoor Air Quality Procedure Development
For many years those seeking LEED certification were required to use the Ventilation Rate Procedure from ASHRAE Standard 62.1 to determine the minimum outdoor air intake flow for mechanical ventilation systems. The IAQ Procedure (IAQP) could not be used even when it could be demonstrated that IAQ would be improved along with reductions in HVAC capital costs and ongoing energy costs. This has changed due to the development of an alternate compliance path for LEED certification that allows the use of the IAQP under a pilot credit. Case studies demonstrating successful application of this pilot credit are presented.
1 A Case Study in a High-Performance Office Building By Applying and Comparing LEED IAQ Procedure Pilot Credit to the Conventional Ventilation Procedure
This presentation compares the effect of two pollutant control strategies on both exposures to contaminants of concern (COCs) and energy use in a high-performance multinational technology company. The first control strategy was the conventional ventilation strategy following the ventilation rate procedure of ASHRAE Standard 62.1-2013. The second strategy consisted of applying the LEED Pilot Alternative Compliance Path 68: Indoor Air Quality Procedure while using air cleaning along with reduced ventilation. This presentation provides results from field measurements of energy and IAQ and documentation of meeting LEED IAQP objective and subjective requirements.
2 Successful Application of the LEED IAQ Procedure Pilot Credit in a Retail Chain Store
The USGBC LEED process is intended to transform the way our buildings are designed, constructed and operated. Recognizing the limitation of ASHRAE 62.1 VRP prescriptive requirements, USGBC developed an alternate compliance path that allows a robust design and verification process to balance good IAQ with optimization of HVAC system for energy conservation and reduced negative impact of energy production on the environment. This presentation describes implementation of the LEED ventilation process through air quality measurement and verification including occupant surveys. The presentation describes energy and HVAC system economic savings from optimization of ventilation rate versus prescriptive approach.
3 Prestigious College-Preparatory School Achieves Sustainability Goals and LEED Certification Using the IAQ Procedure from Standard 62.1
The largest independent co-educational college-preparatory day school in the United States is located in the Atlanta (GA) metropolitan area. Several buildings use geothermal wells for heating and cooling, however, the existing well field did not have sufficient capacity for the new humanities building and the cost of new wells was prohibitive. Consequently, the design team opted to use LEED Pilot Credit 68: Indoor Air Quality Procedure to reduce the overall load on the well field, provide for capital cost savings, and ongoing energy savings. This presentation describes how the IAQ Procedure was successfully applied towards achieving LEED Gold certification.