The purpose of this project was to devise a simple, experimentally validated method for quantifying the energy impacts of exterior envelope air leakage. Four full-size exterior envelope test specimens, two opaque wall systems and two fenestration systems, were built for determining simultaneous conductive and convective heat loss. The two opaque clear wall sections were metal-faced sandwich panel and cold formed steel frame.
Defective and energy inefficient windows, such as single-pane windows, can be responsible for up to 70% of a home's heating and cooling load. An innovative internal storm window system designed to reduce energy loss through single-pane windows was field tested in three occupied homes in the southeastern part of the United States to demonstrate its energy savings impact. The test results indicated that this system, called the "Winsulator" system, reduced window-related energy consumption for heating and cooling by 29%.
Factsheet includes useful chart on glazing materials. Gives basic advice on limiting heat loss from doors and windows, together with recommendations for materials and installation, Also deals with the new hi tech windows using heat reflective film, and problems of condens- ation.
This report focuses on the repair and upgrading of existing windows to acceptable levels of air and thermal resistance. Improvements to existing windows can be effectively achieved for as low as 25 to 50 cents per square foot by caulking and weatherstripping the primary window and then installing an inexpensive interior storm window. 27 interior storm window products are examined and details of design, operation and performance are given. Air infiltration test results are also examined and the thermal performance of each window system in terms of whole house energy savings is evaluated.
The above new building is described. Main features of this building are shade from trees, south windows catch the breeze in summer and insolation in the winter, insulated foundations, roof and wall insulation, solar collectors toprovide all hot water heating and 75% of space heating, thermally massive walls to stabilise temperature, various natural ventilation and air conditioning options, and storm windows. Energy consumption details are given.
A table is given which compares the performance, construction and function of the various types of window treatment. Aspects covered include sun control, thermal insulation, infiltration barrier, security and privacy, control by static, movab
Describes methods of predicting concentration levels of indoor air pollution in a variety of residences by using residence air infiltration rates, residence volumes, and source terms, and by making assumptions about occupant lifestyle and poll
Presents the results of tests on the air leakage characteristics of a number of different energy conservation products applied to a double hung window. Gives air leakage characteristics under simulated in-situ conditions atvarious wind speeds for the different products. Results show that interior shutters perform best, followed by interior storm windows, a reflective shade, quilts and standard window shades. Within a group, products involving perimeter sealing give the best air leakage characteristics.