Short-Term Monitoring Results for Advanced New Construction Test House - Roseville, California

Stecher, D.¹  Brozyna, K.¹  Imm, C.¹ 

[1] IBACOS, Inc., Pittsburgh, PA (United States)

关键词: ductwork;    inside conditioned space;    airflow;    lower heating and cooling loads;    thermal comfort performance;    lower heat losses or gains;    throwing and mixing air;    residential;    residential building;    IBACOS;    Building America;   

DOI  :  10.2172/1220246
RP-ID  :  DOE/GO--102013-3913
PID  :  OSTI ID: 1220246
Others  :  Other: 6490

美国|英语

来源: SciTech Connect

【 摘 要 】

A builder (K. Hovnanian?? Homes??), design consultant, and trades collaborated to identify a systems integrated measures package for a 2,253-ft?? slab-on-grade ranch house to achieve a modeled energy savings of 60% with respect to the Building America House Simulation Protocols, while minimizing construction costs and without requiring changes to the drawing that would impact local code or zoning approval. The key building improvements were applying R-10 insulation to the slab edge, increasing exterior wall cavity insulation from R-13 to R-15, and increasing attic insulation from R-30 to R-38. Also, the air handling unit was relocated from the attic to conditioned space, and ductwork was relocated along the attic floor with an insulated bulkhead built above it. Short-term testing results showed that duct air leakage was low due to short duct runs and the placement of ductwork in conditioned space. However, during commissioning, the lack of access for servicing the ductwork and dampers in the bulkhead area prevented retroactive balancing of individual branches, resulting in significant differences between specified and measured airflow values for some duct runs. Thermal imaging results performed on the house when operating in both heating and cooling modes validated historic stratification issues of ceiling supply registers with high supply air temperatures. Long-term monitoring results will be detailed in a future report.