Project is complete and final report has been published. Results show that the home with the single cold water coil in the attic from the IDEC met the home's temperature requirements, but the home with the multiple mini-splits system supplied by the IDEC was unable to keep occupants comfortable.
This project demonstrated innovative pre-commercial, cost-effective retrofit packages for cooling and ventilation for single family homes. Energy savings, occupant behavior and indoor air quality (IAQ) are to be measured for two specific retrofit packages that each includes three innovative technologies: (1) building envelope sealing, (2) two variants of smart mechanical ventilation that include pre-cooling strategies, and (3) mostly compressor-free evaporative air-conditioning. Furthermore, advance modeling with new microchannel heat exchangers was completed. Additionally, barriers and opportunities towards adoption of such retrofits are to be identified through stakeholder interviews.
This retrofit package could reduce HVAC energy costs in existing buildings by over 30 percent through the use of compressor-less cooling technology. The project also hopes to identify opportunities to encourage widespread adoption of the attic package by promoting to utilities and builders, thus potentially reducing deployment costs.
The demonstration packages could reduce energy consumption and thus reduce greenhouse gas emissions, especially during peak demand hours. The energy savings is estimated to reduce greenhouse gas emissions by 56,000 metric tons per year by 2024 assuming a limited 5 percent adoption rate throughout the State. Furthermore, the evaporative cooling system reduces the usage of refrigerants are known to contribute to global warming.
Key Project Members
Davis Energy Group, Inc.
Electric Power Research Institute, Inc.