Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate

Zoeller, William¹  Williamson, James¹  Puttagunta, Srikanth¹ 

[1] Consortium for Advanced Residential Buildings, Norwalk, CT (United States)

关键词: crawlspace;    ventilation;    whole-house ventilation;    exhaust-only ventilation;    radon;    code compliance;    IRC;    International Residential Code: ASHRAE 62.2;    ASHARAE 62.2-2010;    ASHRAE 62.2-2013;    tracer gas;    SF6;    Reciprocal Age of Air;    RAoA;    CARB;    Consortium for Advanced Residential Buildings;    SWA;    Steven Winter Associates;    condensation potential;    dewpoint;    sealed crawlspace;    unvented crawlspace;    resident;   

DOI  :  10.2172/1220515
RP-ID  :  DOE/GO--102015-4699
PID  :  OSTI ID: 1220515
Others  :  Other: 7133

美国|英语

来源: SciTech Connect

【 摘 要 】

One method of code-compliance for crawlspaces is to seal and insulate the crawlspace, rather than venting to the outdoors. However, codes require mechanical ventilation; either via conditioned supply air from the HVAC system, or a continuous exhaust ventilation strategy. As the CARB's building partner, Ithaca Neighborhood Housing Services, intended to use the unvented crawlspace in a recent development, CARB was interested in investigating a hybrid ventilation method that includes the exhaust air from the crawlspace as a portion of an ASHRAE 62.2 compliant whole-house ventilation strategy. This hybrid ventilation method was evaluated through a series of long-term monitoring tests that observed temperature, humidity, and pressure conditions through the home and crawlspace.