Cooling Load Calculations For Typical Iraqi Roof And Wall Constructions Using Ashrae's RTS Method

Abstract

The present work is an attempt to develop design data for an Iraqi roof and wall constructions using the latest ASHRAE Radiant Time Series (RTS) cooling load calculation method. The work involves calculation of cooling load theoretically by introducing the design data for Iraq, and verifies the results experimentally by field measurements. Technical specifications of Iraqi construction materials are used to derive the conduction time factors that needed in RTS method calculations. Special software published by Oklahoma state university is used to extract the conduction factors according to the technical specifications of Iraqi construction materials. Good agreement between the average theoretical and measured cooling load is obtained and the difference between them does not exceed 9.3%.
 

Numerical Study of the Effect of Thermal Insulation and Window-to-wall Ratio on Reducing the Thermal Loads of the Residential Sector in Iraq

“…Each room has a double-glazed window, six external walls and one internal wall separating the two rooms as shown in Figure 4, and the floor is insulated with thermal insulation to eliminate its influence on the results. The building faces south, and the characteristics of the walls and roof are shown in Table 2 [18]. The layers are presented in Table 2, and their respective properties are entered into the program via the TRNbuild window.…”