.

Applied Research Projects

.

Thermal Evaluation of Flat-Roof Roofponds

.

This research project was conceived as a multiple-phase study with the ultimate goal of producing a numerical model to simulate the thermal performance of flat-roof, unglazed roofpond buildings. In its first phase, this study will compare a roofpond test-cell with a control cell that does not have any thermal mass. Both test-cells have the same type of construction and their movable insulation is operated using the same routine. In the second phase of this study the same amount of thermal mass used in the roofpond test-cell will be added to the interior of the control cell to determine the effects of thermal mass in different locations within a building. In the third phase of this project, both test-cells will have a roofpond, but the amount of insulation will be varied in the cells to see the combined effect of thermal mass and different levels of resistive insulation.
.
This research project has an estimated duration of three years. At the end of the project a design guideline to predict the thermal performance of roofpond buildings will be produced.

...........................................................................................

.

Side-by-Side Comparison of Building

Materials for Insulation

.

The goal of this research project is to experimentally determine and characterize the heat transfer and insulation properties of different construction materials and assembles. The project is setup as a stand-alone “frame wall” where different materials are inserted in the five cavities between the insulated double frames. In this project a large number of materials will be tested (currently, the test includes a water-wall, extruded polyurethane insulation, fiber-glass batt insulation, a radiant barrier, and a dead air space), and the results will be used to develop a guideline of insulation properties versus cost for the United States Southwest.
.
Results of the project will be used also to empirically develop heat transfer coefficients for various materials as a function of temperature changes.
 

 

 

 

 

 

 

.

.

 

 

 

 

 

 

.

 

 

 

 

DRAWINGS:

.

• Diagrammatic Sections

.... JPEG Image (107 KB)