Ea Prerequisite Fundamental Commissioning – Certain Systems Must Be Commissioned
EA Prerequisite Fundamental commissioningCertain systems must be commissioned-HVAC-Lighting Control-Domestic hot water system-Renewable energyBOD: the information necessary to accomplish owner’s project requirements, including system description, indoor environmental quality certia, references to applicable standards”.The authority can use sampling strategies for functional testing. Testing script follows the sequence of operation created by engineer.BOD Must engage before design-development phase.Cx plan: -role and responsibility, team directory, schedule of commissioning activities. Updated through the life of projectOwner should update OPR if design modification are madeDesign team are responsible for BODCxA responsible for Cx plan. At least two similar project experience.Building envelop does not need to be commissioned.EA Prerequisite: minimum energy performaceThe first step is to determine the climate zoneOption1: Whole-building energy simulation 5% for new construction, 3% for major renovations, or 2% for core and shell compared with ASHRAE 90.1 baselineOption2: comply with ASHARE 50% Advanced Energy Design.(focus on HVAC and water heating equipment )Option3: “Core Performance guide”(can not earn credit optimize energy performance)(VAV, and economizer performance, focused)EA prerequisite: building-level energy meteringShare data, 5 years useEA Prerequisite: fundamental refrigerant managementDo not CFC in new. Reusing-phase out conversion. Small existing unit are exempt.VRF improves the efficiency, but need a higher refrigerant charge.EA Credit: Enhanced commissioningOption 1. Enhanced System commissioning: Path 1: Enhanced commissioning(3) Path 2: Enhanced and monitoring-based commissioningOption 2. Envelop commissioningReviewing operation within 10 months of substantial operation is part of enhanced commissioning, not prerequisiteEA: Optimize energy performancePrescriptive path would benefit from cost and budget by simplified decision-making.Performance path is a better tool to reach leed platiumEA Credit: Advanced Energy MeteringInstall energy metering for: 1 all whole-building energy sources used by building.2
Any individual energy use that represent 10% or more of total annul consumption of the building.-Permanently installed.-Storing date for at least 36 months-Must capable of reporting hourlyEA credit: demand response1 year contractDemand response program must tie to BAS(Building automation system) so the two can be designed together.Not manually and should provided by a qualified DR program provider.EA: Renewable energy productionEnergy calculations can come from the energy calculated by the EA Credit Optimize Energy Performance or the CBECS database.The unit is cost($) not energy(mwh)[pic 1]EA: Enhanced Refrigerant managementOption 1. No refrigerants or low-impact refrigerants ozone depletion potential(ODP) of zero and a global warming potential of less than 50.Option 2. LCGW+LCODP<100EA: Green power and carbon offsets.1/1/2005Scope 1 emissions are direct greenhouse emission on site, such as fossil fuels burn on site.Scope 2 emissions are indirect greenhouse emission related with energy through purchased electricity.Green power and REC(Renewable energy certificates) are only to mitigate scope 1.