retrofit

Measures houses with energy efficient designs in Eugene, Oregon and Rochester (NY) for effective leakage area using blower door fan pressurization. Determines air change rates by tracer gas decay analysis. Makes fan pressurization measurements on 13 new houses in the San Francisco Bay area that have been partially sealed with polymeric foam sealant. Measures a similar group of 13 unsealed houses as a control. Uses the results of thesemeasurements in conjunction with an infiltration model developed at LBL to predict average annual and heating season infiltration rates.

Descibes tests conducted by the Pacific Gas and Electric (PGE) and the Bonneville Power Administration (BPA) to evaluate cost effectiveness of certain retrofits. 20 houses in Walnut Creek CA underwent an air infiltration reduction program, simi

Describes a project carried out by the Bonneville Power Administration where 18 houses at its Midway substation in central Washington were retrofitted and the results monitored for a 3 year period. The houses were divided into 3 groups. During

Describes the installation and use of the Gadzco blower door, as part of a house doctor's program for identifying source of air leakage before retrofitting. Discusses advantages and drawbacks of this particular type of blower door.

Gives answers to practical problems encountered when retrofitting older Canadian houses. The first section gives an overview of a typical house both before and after retrofitting. The second section gives detailed answers togeneral questions covering ventilation, moisture and condensation, air barriers (sealing a house), vapour barriers, insulation, basements, walls, attics, roofs, windows, doors, weatherstripping, caulking, air quality, heat recovery and heat loss testing.

Illustrates the building, comprising 24 flats in four storeys constructed in 1957 and heated by an oil fired boiler. Notes the intensive monitoring of the thermal characteristics of the building since 1980, with readings from 600 sensors.

Comments on the benefits of tighter house construction and gives a summary of the current tightness levels of the US housing stocks, based on a 300-house survey of infiltration measurements. Looks at 2 case studies of energy-efficient houses both for the details of their construction and for the air quality in the finished houses. Presents a set of drawing details that illustrate specific techniques for reducing infiltration. Includes methods of weatherstripping doors and windows, caulking and sealing, possible leakage points, and installing vapour barriers.

Assesses the impact of energy conservation retrofits on the indoor air quality of residential buildings, through a field monitoring project in which air leakage, air exchange rates and indoor air pollutants are measured before and after retrofit. Uses a mobile laboratory to make detailed on-site measurements of air exchange rates and concentrations of pollutants in 2 houses, and measures effective leakage area in 7 other houses. Impact on indoor air quality of the energy conserving retrofits seem to be minimal.

Describes a study of indoor air quality in 12 retrofitted houses of the Bonneville Power Administration (BPA) Midway Substation Residential Community, undertaken by LBL and BPA. Measures effective leakage areas and average concentrations of nitrogen dioxide, formaldehyde and radon before and after retrofit. Finds average reduction in leakage area of 32%. None of the pollutants measured before or after retrofit reached levels exceeding existing guidelines.

Presents the results of air leakage measurments in 18 single-family detached houses at the Midway substation, Hanford, Washington, performed as part of the Bonneville Power Administration Energy Conservation Study. Compares the change in energy consumption following various retrofit strategies. Measures air leakage in each house with the fan pressurization technique, before and after retrofits are installed.