摘要：

In this study, a simple storage wall (Trombe wall) was built and tested in winter days in Baghdad City. The wall area was 1 m 2 facing south. The wall consisted of wooden box isolated by glass wool layer and covered by a glass cover with 4 mm thickness. Thirty-three plastic water bottles were arranged inside the box each has a 1.5-liter capacity, and a quantity of paraffin wax as phase change material (PCM) was put after this layer in a glass box. The paraffin wax amount was about 10 kg, and an aluminum plate with 4 mm thickness was fixed after it. This plate was colored by non-selective black color to attract as high as possible from solar heat. The study conducted in Baghdad City winter days in December 2015 and January 2016. The temperature distribution of the different parts of the Trombe wall was measured, and the stored energy inside these parts was evaluated. The results revealed that this wall is efficient in storing solar energy. This wall can be used as an assistant method to heat homes after sunset.

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