Importance of Biodiversity in Ecosystems
Biodiversity plays a crucial role in maintaining the balance of ecosystems, supporting various species, and providing essential services. This collection of images and information highlights the economic, ecological, and gene pool diversity values, as well as the factors affecting biodiversity and the impact of climate on species distribution.
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Presentation Transcript
Investigation of the Effectiveness and Failure Rates of Whole-house Mechanical Ventilation Systems in Florida Interim Progress Report FBC Mechanical Technical Advisory Committee Teleconference Meeting February 25, 2015 A Research Institute of the University of Central Florida
Research Purpose and Goal Investigate the effectiveness and failure rates of whole-house mechanical ventilation systems installed in Florida homes over the last 15 years and seek to determine the reason(s) for any issues identified. 2 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Air Tightening and Ventilation Air tightening allows control over where and how much outside air enters a house Measured 2009 Florida Code home average airtightness is ACH50 5.6 (31 home sample) As homes become tighter, mechanical ventilation becomes more important 3 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Air Tightening and Ventilation 2014 FEC requirement is <= 5 ACH50 (which will tend to make Florida homes more airtight) 2014 FMC will require mechanical ventilation for any home with an ACH50 < 5 Combination of Energy and Mechanical Code requirements means that when the 2014 Code goes into effect most new Florida homes will require mechanical ventilation 4 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Expected Outcome and Impact on the Code A project report that will include field study results: Ventilation system airflow effectiveness Failure findings Recommendations for future Florida Code airtightness and ventilation requirements and education 5 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Research Approach Field study in 20 homes around the state that had whole-house mechanical ventilation systems installed in the last 15 years to include: A homeowner survey for each home to assess awareness of the ventilation system and its purpose and maintenance practices Inspection and testing of each home s ventilation system to assess its operational status, level of ventilation it is currently providing and likely reason(s) for any issue discovered 6 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Developed and received approvals for all study materials Fulfilled institutional Review Board / Human Subjects research requirements (for staff and study materials) Postcard mailing and home visit scheduling 7 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Homeowner Outreach Postcards 8 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Homeowner Outreach Web Page 9 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Developed 27-Question Homeowner Survey Includes operation and maintenance questions 10 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Developed Ventilation System Test Protocol 11 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Progress to Date Current Homeowner Outreach Status 935 postcards mailed out February 11th 30 initial homeowner responses to date 30 follow-up calls or emails Four signed Homeowner Agreements received / six additional requested First two home visits scheduled Scheduling is ongoing; calling owners of older homes for which no response yet 12 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Next Steps Continue phone calls and assessing responses to date Second mailing in early March likely Continue to schedule home visits Compile survey and test data as obtained 13 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Project Completion Begin data review and analysis in April Complete data analysis and write final report mid to late April though May Final report delivered by June 1st 14 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
Current Issues Only two of the 30 initial responses are for homes that are definitely 2+ years old; another six may be 2+ years old Working on identifying additional older homes (e.g. following-up with homeowner in ~2010-built neighborhood who is willing to talk to neighbors) 15 FLORIDA SOLAR ENERGY CENTER A Research Institute of the University of Central Florida
