| Third Party Commissioning and Retro Commissioning |
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Introduction
Third party commissioning (TPC) and retro commissioning (RCx) are critical processes aimed at optimizing building performance, ensuring that systems operate as intended, and enhancing energy efficiency. These processes are guided by various standards and best practices that help ensure systematic evaluations and improvements in building systems.
1. Understanding Third Party Commissioning and Retro Commissioning
Third Party Commissioning (TPC) involves an independent entity assessing a building’s systems and processes to verify that they meet specified performance criteria. This approach ensures objectivity and unbiased evaluations, which can uncover issues that internal teams might overlook.
Retro Commissioning (RCx), on the other hand, is the process of improving an existing building's performance by reevaluating and optimizing its systems. This typically involves assessing HVAC, lighting, and control systems to ensure they operate efficiently and meet the building's current needs.
Both processes contribute significantly to enhancing indoor air quality, occupant comfort, and energy efficiency.
2. Relevant Standards for TPC and RCx
Several standards guide the practices of third-party commissioning and retro commissioning:
ASHRAE Guideline 02013: This guideline provides a foundation for commissioning processes, emphasizing the importance of defining goals, roles, and responsibilities. It outlines the commissioning process from planning to execution, ensuring a systematic approach.
ASHRAE Guideline 1.12007 (RA 2010): This guideline specifically addresses the commissioning process for new buildings and major renovations. It provides a comprehensive framework for documentation, testing, and verification, promoting best practices in commissioning.
BCA (Building Commissioning Association) Standards: The BCA provides resources and standards for commissioning processes, including guidelines for retro commissioning existing buildings. Their documents emphasize the importance of thorough assessments and documentation.
LEED Certification Standards: For buildings pursuing LEED certification, the US Green Building Council mandates commissioning as part of the sustainable design process. LEED credits are awarded for both TPC and RCx, highlighting their importance in achieving sustainable building practices.
3. The Process of Third-Party Commissioning and Retro Commissioning
Third Party Commissioning Process:
• Planning: Establishing the scope, objectives, and criteria for success.
• Review: Evaluating design documents and operational requirements.
• Verification: Conducting site visits to verify installations and systems.
• Testing: Performing functional testing to ensure systems operate as intended.
• Reporting: Documenting findings, providing recommendations, and developing a commissioning report.
Retro Commissioning Process:
• Assessment: Reviewing existing building performance data and systems.
• Investigation: Conducting onsite evaluations to identify inefficiencies.
• Optimization: Implementing adjustments to systems and controls for better performance.
• Monitoring: Establishing ongoing monitoring strategies to sustain performance improvements.
• Documentation: Creating a report that details findings, actions taken, and recommendations for future improvements.
4. Benefits of TPC and RCx
• Enhanced Efficiency: Both processes lead to significant energy savings by optimizing system performance and reducing waste.
• Improved Indoor Environment: Better operation of HVAC and lighting systems contributes to improved indoor air quality and occupant comfort.
• Cost Savings: Reducing energy consumption lowers operational costs, providing a quick return on investment.
• Increased Asset Value: Commissioned buildings tend to have higher market value due to their operational efficiency and sustainability.
5. Challenges and Future Directions
While TPC and RCx offer numerous benefits, challenges exist, such as the need for skilled personnel, the complexity of existing systems, and budget constraints. Organizations should prioritize training for commissioning agents and invest in tools that facilitate efficient assessments.
Conclusion
Third party commissioning and retro commissioning are essential practices for optimizing building performance and energy efficiency. By adhering to established standards, organizations can systematically evaluate and enhance their systems, resulting in improved occupant comfort, reduced operational costs, and increased sustainability. As the demand for energy efficient buildings grows, these practices will play a crucial role in the future of building management.
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