Codes and Standards
Red Car Analytics authored this report on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This Final Project Report summarizes the findings of the PG&E’s Code Readiness Subprogram DOAS Field Research project that presents Title 24, Part 6 enhancement opportunities based on analyzed field data for dedicated outdoor air systems (DOAS) and variable refrigerant flow (VRF) systems.
Access the report here: https://etcc-ca.com/reports/energy-efficiency-potential-dedicated-outdoor-air-systems-commercial-buildings
Red Car Analytics conducted this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This case study presents data for a new construction office/classroom building in Palm Springs, CA, which uses an energy recovery ventilator (ERV) dedicated outdoor air system (DOAS) with heat recovery variable refrigerant flow (VRF).
Access the report here: https://www.etcc-ca.com/reports/code-readiness-case-study-energy-recovery-dedicated-outdoor-air-system-heat-recovery-vrf
Red Car Analytics conducted this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This case study presents data for a new construction office/classroom building in Santa Rosa, CA, which uses an energy recovery ventilator (ERV) dedicated outdoor air system (DOAS) with heat recovery variable refrigerant flow (VRF).
Access the report here: https://www.etcc-ca.com/reports/code-readiness-report-evaluation-dedicated-outdoor-air-system-and-variable-refrigerant-flow
Red Car Analytics conducted this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This report compares energy savings, peak demand reduction, and implementation feasibility for controls sequences of operation implemented at field sites with dedicated outdoor air and variable refrigerant flow systems.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-report-evaluation-dedicated-outdoor-air-system-and-variable-refrigerant-flow
Red Car Analytics conducted this research on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This data brief presents field site HVAC system design details and preliminary data analysis results from an ongoing field research project of nonresidential hydronic heat pump heating equipment across California.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-data-brief-hydronic-heat-pump-field-assessment
Red Car Analytics conducted this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This case study presents data for a building retrofit consisting of a heat recovery ventilator (HRV) dedicated outdoor air system (DOAS) and heat recovery variable refrigerant flow (VRF) system at an office in Martinez, CA.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-case-study-heat-recovery-dedicated-outdoor-air-system-heat-recovery-vrf
Red Car Analytics conducted this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This case study presents data for a building retrofit consisting of an energy recovery ventilator (ERV) dedicated outdoor air system (DOAS) and heat recovery variable refrigerant flow (VRF) system at an office in Sacramento, CA.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-case-study-energy-recovery-dedicated-outdoor-air-system-and-heat-recovery
Red Car Analytics authored this report on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
This report summarizes findings from five nonresidential building field sites in North California using dedicated outdoor air systems (DOAS). Design, construction, and operational data was collected to quantify DOAS efficiency and inform future potential energy efficiency enhancements to Title 24, Part 6.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-dedicated-outdoor-air-system-field-assessment-results
Red Car Analytics served as a contributing author and researcher for this study on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
The study’s goal was to investigate whether Title 24 energy code compliance requirements and energy simulation rulesets for rooftop unit (RTU)/economizer systems adequately reflect real world performance in California climate zones. The study uses field observations to inform recommendations for updating code compliance requirements for RTU/economizer systems and energy simulation rulesets used by energy performance compliance software.
Access the report here: https://www.etcc-ca.com/reports/code-readiness-rtueconomizer-analysis-and-field-assessment
Red Car Analytics conducted this work on behalf of Pacific Gas & Electric (PG&E) in collaboration with Energy Solutions.
Red Car Analytics served as the lead author for the computer room efficiency 2022 Title 24 Part 6 code change proposal for computer room efficiency. Proposed energy efficiency measures included:
- Uninterruptible Power Supply (UPS) Efficiency
- Increased Temperature Threshold for Economizers
- Computer Room Heat Recovery
- Power Usage Effectiveness (PUE) Monitoring
Access the report here: https://title24stakeholders.com/wp-content/uploads/2021/03/NR-Computer-Room-Efficiency-Final-CASE-Report_Statewide-CASE-Team_updated.pdf
Red Car Analytics conducted this work on behalf of Pacific Gas & Electric (PG&E) in collaboration with Energy Solutions.
Red Car Analytics served as the lead author for the dedicated outdoor air system (DOAS) measure in the 2022 Title 24 Part 6 code change proposal for computer room efficiency.
Access the report here: https://title24stakeholders.com/wp-content/uploads/2020/10/2022-T24-Final-CASE-Report-HVAC-Controls.pdf
Red Car Analytics conducted this research on behalf of Pacific Gas & Electric (PG&E) in collaboration with 2050 Partners.
The objective of this retrofit project was to develop cost, performance, and occupant satisfaction data from a field demonstration site using a dedicated outdoor air system (DOAS) consisting of a heat recovery ventilator (HRV) and variable refrigerant flow (VRF) system and a networked lighting control system that includes Power of Ethernet LED lighting.
Access the report here: https://www.etcc-ca.com/reports/retrofit-doas-vrf-and-networked-lighting-controls-demonstration-uc-davis-facilities
Guides
Red Car Analytics developed this guide on behalf of Northwest Energy Efficiency Alliance (NEEA).
This guide provides energy modelers guidance on best practices for simulating very high efficiency (VHE) dedicated outdoor air systems (DOAS) in energy modeling software such as EnergyPlus, VE-IES, eQuest/DOE2.3, and EDSL Tas.
Access the report here: https://betterbricks.com/uploads/resources/NEEA-VHE-DOAS-Modeling-Guide_Final.pdf
Red Car Analytics created this guide for people interested learning more about building energy management systems (EMS) including use cases, options, and EMS selection criteria. The guide provides examples of graphical displays and analytics that can be implemented on an EMS.
Access the guide here:
Publications
Red Car Analytics conducted this study on behalf of Northwest Energy Efficiency Alliance (NEEA).
This report analyzes the energy benefits of using very high efficiency (VHE) dedicated outdoor air systems (DOAS) in a multi-family building application using a calibrated energy model and measured field data to understand the trade-offs in efficiency compared to conventional heating, ventilation, and air conditioning (HVAC) systems.
Access the report here: https://betterbricks.com/uploads/resources/Multi-Family-Calibrated-Energy-Model-Report.pdf
Red Car Analytics conducted this study on behalf of Northwest Energy Efficiency Alliance (NEEA).
This study analyzed the impact of expanded parameters on energy efficiency and first-cost effectiveness for heat recovery or energy recovery ventilation (HRV/ERV).
Access the report here: https://betterbricks.com/resources/analysis-of-expanded-efficiency-parameters-for-very-high-efficiency-doas
Red Car Analytics in collaboration with Ecotope conducted this study for Southern California Edison.
This study investigates battery algorithms and methods used to represent battery controls, often called rulesets, and currently used in Title 24 compliance software to assess the accuracy of representation. The study seeks to identify and evaluate feasible enhancements to these algorithms and rulesets to inform and enhance future Title 24 compliance software.
Access the report here: https://calbem.ibpsa.us/wp-content/uploads/2022/07/Enhanced-Energy-Modeling-Methods-for-Electric-Battery_5-31_2022.pdf
Red Car Analytics conducted this study on behalf of Northwest Energy Efficiency Alliance (NEEA).
This study compared decoupled air conditioning systems using direct-expansion air conditioning dedicated outdoor air systems (DX-DOAS) with others utilizing ERV/HRV-DOAS. The project included an energy analysis of typical commercial buildings using two types of DOAS—DX-DOAS and Washington state code minimum ERV/HRV-DOAS—while keeping the space conditioning system equal.
Access the report here: https://betterbricks.com/resources/energy-efficiency-analysis-of-commercial-dx-doas-and-erv-hrv-doas
Red Car Analytics conducted this study on behalf of Northwest Energy Efficiency Alliance (NEEA).
This report summarizes the leading institutions’ COVID-19 mitigation recommendations for commercial ventilation systems, including:
- Evaluates a COVID-19 mitigation strategy of increasing a building’s outdoor air by utilizing mechanical ventilation to reduce viral transmission risk.
- Evaluates how increasing outdoor air as a strategy impacts the operational energy costs for three types of heating, ventilation and air-conditioning (HVAC) systems, a Very High Efficiency Dedicated Outdoor Air System and two types of conventional mixed-air systems; packaged single zone variable air volume systems and a packaged multi-zone system.
- Reviews the resiliency benefits of a Very High Efficiency DOAS system in building operations.
Access the report here: https://betterbricks.com/resources/covid-19-hvac-risk-reduction-strategies
Red Car Analytics served as a contributor for heat pump system design and sizing content for this research report that was published by American Council for an Energy-Efficient Economy (ACEEE).
Access the report here: https://www.aceee.org/sites/default/files/pdfs/b2004.pdf
Red Car Analytics conducted this study on behalf of Northwest Energy Efficiency Alliance (NEEA).
The purpose of this report was to identify the cost benefits of converting a commercial building’s HVAC system to three configurations of a Dedicated Outside Air System (DOAS) with each one increasing in energy efficiency. The findings showed that a Very High Efficiency (VHE) DOAS package has the highest net present value over the estimated life of the equipment, 20 years, in all climate zones and building types analyzed.
Access the report here: https://betterbricks.com/resources/economic-analysis-of-heat-recovery-equipment-in-commercial-dedicated-outside-air-systems