Evaluating Ventilation Systems for Existing Homes

Aldrich, R. ; Arena, L.

National Renewable Energy Laboratory (U.S.)

关键词: Buildings;    32 Energy Conservation, Consumption, And Utilization Ducts;    Ducts;    Residential;    Electricity, Resources, And Buildings Systems;   

DOI  :  10.2172/1064546
RP-ID  :  DOE/GO-102013-3823
RP-ID  :  AC36-08GO28308
RP-ID  :  1064546

美国|英语

来源: UNT Digital Library

【 摘 要 】

During the course of this project, an affordable and high performance ductwork system to directly address the problems of thermal losses, poor efficiency, and air leakage was designed. To save space and enable direct connections between different floors of the building, the ductwork system was designed in such a way that it occupied interior or exterior frame wall cavities. The ductwork system satisfied building regulations for structural support when bridging multiple floors, the spread of fire and smoke, and insulation to reduce the heat flow into or out of the building. Retrofits of urban residential buildings will be the main focus for the application of this ductwork system. Highly reflective foils and insulating materials were used to aid in the increase of the overall R-value of the ductwork itself and the wall assembly. It is expected that the proposed system will increase the efficiency of the HVAC system and the thermal resistance of the building envelope. The performance of the proposed ductwork design was numerically evaluated in a number of different ways. Our results indicate that the duct method is a very cost attractive alternative to the conventional method.