4. Thermal performance assessment
Usually, in order to evaluate the thermal properties (e.g. the
thermal transmission coefficient, U, or the thermal conductivity,
k) of materials or building component systems, a testing thermal
cell is currently applied. However, in this research work, an alternative
experimental procedure based in [14] was applied. In this
case, the facilities, the sample preparation, the equipment and
the test procedures are crucial [15]. Therefore, in the context of this
paper, these aspects will be explained in detail in the following
sections.
4.1. Facility and sample preparation
A confined room with 4.00 m 3.00 m 2.54 m (length
width height) was used as an alternative expedite solution of a
testing thermal cell, Fig. 6a. This room must have windows preferentially
oriented to north in order to avoid the direct sunshine incidence
on the samples. In this case, there are five windows in the
northeast façade of the confined room, Fig. 6a.
Corn cob and expanded clay concrete samples were specifically
produced for this test. These samples were sized 40 cm 20 cm
5 cm(width height thickness) as illustrated in Fig. 3b (detail II)
for the corn cob concrete samples. Meanwhile, the XPS panel was
4. Thermal performance assessmentUsually, in order to evaluate the thermal properties (e.g. thethermal transmission coefficient, U, or the thermal conductivity,k) of materials or building component systems, a testing thermalcell is currently applied. However, in this research work, an alternativeexperimental procedure based in [14] was applied. In thiscase, the facilities, the sample preparation, the equipment andthe test procedures are crucial [15]. Therefore, in the context of thispaper, these aspects will be explained in detail in the followingsections.4.1. Facility and sample preparationA confined room with 4.00 m 3.00 m 2.54 m (length width height) was used as an alternative expedite solution of atesting thermal cell, Fig. 6a. This room must have windows preferentiallyoriented to north in order to avoid the direct sunshine incidenceon the samples. In this case, there are five windows in thenortheast façade of the confined room, Fig. 6a.Corn cob and expanded clay concrete samples were specificallyproduced for this test. These samples were sized 40 cm 20 cm 5 cm(width height thickness) as illustrated in Fig. 3b (detail II)for the corn cob concrete samples. Meanwhile, the XPS panel was
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