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Form 2-2 Exterior Wall Configuration Input Sheet

In "Form 2-2. (Air Conditioning) Exterior Wall Configuration" input sheet, information concerning the configuration of exterior wall members (materials and thicknesses) shall be entered based on the architectural drawings (wall sections, exterior finish lists, and interior finish lists) in which the compositions (materials, thicknesses) of exterior walls (including roofs) are described, as well as the structural drawings in which the dimensions of the structural frame are indicated.

The information entered in this sheet shall be used in "Form 2-4. (Air Conditioning) Envelope Specifications" input sheet.

Format of the Exterior Wall Configuration Input Sheet

The format of "Form 2-2. (Air Conditioning) Exterior Wall Configuration" input sheet is shown in Figure 2-2-1.

Figure 2-2-1 “Form 2-2. (Air Conditioning) Exterior Wall Configuration” Input Sheet

Figure 2-2-1 “Form 2-2. (Air Conditioning) Exterior Wall Configuration” Input Sheet

Input Items and Input Method of the Exterior Wall Configuration Input Sheet

The input items and input methods of the “Form 2-2. (Air Conditioning) Exterior Wall Configuration” input sheet are shown below. The numbers in brackets preceding each item name correspond to the numbers in brackets shown at the top of Figure 2-2-1.

(1) Name of Exterior Wall

  • Enter, in any character string, the name of each exterior wall configuration.
  • In the Energy Consumption Performance Calculation Program (Non-residential Version), exterior walls are identified by these names; therefore, care must be taken to ensure that names are not duplicated.
  • For example, in Figure 2-2-1 “Form 2-2. (Air Conditioning) Exterior Wall Configuration Input Sheet,” the exterior wall is named “OW1 (Outside Wall 1),” the wall in contact with soil (ground-contact wall) is named “BW1 (Basement Wall 1),” the concrete slab on grade (ground-contact wall) is named “BF1 (Basement Floor 1),” and the roof is named “OR1 (Outside Roof 1).”

(2) Wall Type

  • Select the wall type from the options shown in Table 2-2-1 “Wall Type” and enter it as a character string.
  • When “Outside Wall” is selected, heat gain through transmission is calculated from the temperature difference between the outside air and the room air. When “Ground-Contact Wall” is selected, heat gain through transmission is calculated from the temperature difference between the underground temperature (assumed to be equal to the annual average outside air temperature) and the room air temperature.
Table 2-2-1 Wall Type
Option Application
Exterior wall Walls, roofs and floors that form the building shell and are exposed to outdoor air
Earth-contact wall Walls and floors in contact with the ground

(3) Thermal Transmittance

  • Enter the thermal transmittance of the defined exterior wall as a numerical value. The unit is W/m²K. In this case, the basis for calculating the thermal transmittance must be submitted separately.
  • When specifying the composition of building materials in items (4) to (7) below, (3) may be left blank. When using special building materials not defined in Table 2-2-2 “List of Types and Physical Properties of Building Materials,” (4) shall be left blank, and the thermal conductivity shall be entered in (6).
  • When both (3) and (4)–(7) are entered, (3) takes precedence, and load calculation is executed based on the value entered in (3).

(4)(5) Building Material Number / Building Material Name

  • Select the wall constituent materials from Table 2-2-2 “List of Types and Physical Properties of Building Materials,” and enter the corresponding building material number and building material name as a number and a character string.
  • When there is no corresponding building material, leave (4) blank, enter an arbitrary building material name in (5), and enter the thermal conductivity in (6).
  • Materials shall be entered in order from the indoor side to the outdoor side, with the indoor side at the top and the outdoor side at the bottom. In the Energy Consumption Performance Calculation Program (Non-residential Version), air-conditioning load is obtained by steady-state load calculation; therefore, the order of building materials does not affect the result. However, to facilitate cross-checking by reviewers with the drawings, it is recommended that building materials be listed in order from the indoor side.
  • Do not delete the pre-entered words “Indoor Side” and “Outdoor Side” on the sheet.
  • Cross-laminated timber (CLT panels) based on “Japanese Agricultural Standard for Cross Laminated Timber (Ministry of Agriculture, Forestry and Fisheries Notification No. 3079, enacted on December 20, 2013)” shall be entered as “Natural Wood.”
  • The Building Material Name in (5) is used for cross-checking with the drawings and is not used in the calculation. When the “Building Material Number” in (4) is selected from “List of Types and Physical Properties of Building Materials,” the name corresponding to that building material number shall be entered; otherwise, the name of the adopted building material shall be entered.

(6) Thermal Conductivity

  • Enter the thermal conductivity of the building material entered in (5). When the building material is JIS-marked, enter the value defined in the JIS standard, the value for commercial products tested according to the JIS-specified test method, or the value calculated in accordance with the JIS-specified calculation method.
  • When a building material number is selected in (4), (6) shall be left blank. You should make selection in (4) or entry in (6), not both.

(7) Thickness

  • Enter the thickness of the building material entered in (4) and (5) as a numerical value. The unit is mm.
  • For non-airtight hollow layers, entry of thickness is not required.

(8) Solar Absorptance

  • Entry of solar absorptance of the outside air side surface is optional. If not entered, it shall be left blank. In such case, the default value (0.8) shall be used in the calculation.
  • When entering a value, regardless of the substrate material of the surface where the paint film is applied, the value shall be the solar absorptance defined in JIS K 5603 “Thermal performance of paint film — Determination of solar absorptance with a heat flow meter.” Alternatively, regardless of the substrate material of the surface where the paint film is applied, the value obtained by subtracting the solar reflectance defined in JIS K 5602 (Solar Reflectance of Paint Films) from 1.0 may be used.

(9) Remarks

  • This field is for memos during data entry and is not used in the calculation, so entry is optional.
Table 2-2-2 List of Types and Physical Properties of Building Materials
Category Material No. Material name Thermal conductivity [W/(m·K)] Volumetric specific heat [J/(L·K)] Specific heat [J/(g·K)] Density [g/L]
Metal 1 Steel 55 3600 0.46 7900
2 Aluminum 210 2400 0.88 2700
3 Copper 370 3200 0.39 8300
4 Stainless steel 15 3500 0.47 7400
Rock and soil 21 Rock 3.1 2400 0.86 2800
22 Soil 1 3300 2.3 1500
Concrete materials 41 Concrete 1.6 2000 0.88 2300
42 Lightweight concrete (lightweight class 1) 0.8 1900 1 1900
43 Lightweight concrete (lightweight class 2) 0.5 1600 1 1600
44 Autoclaved lightweight aerated concrete panel (ALC panel) 0.19 660 1.1 600
45 Concrete block (heavyweight) 1.1 1800 0.78 2300
46 Concrete block (lightweight) 0.53 1600 1.1 1500
47 Cement / mortar 1.5 1600 0.8 2000
48 Extruded cement panel 0.4 2100 1.13 1900
Non-wood wall and base materials 61 Gypsum plaster 0.6 1600 0.84 1900
62 Gypsum board 0.22 830 1.1 750
63 Hard gypsum board 0.36 1320 1.1 1200
64 Lime plaster (shikkui) 0.74 1400 1.1 1300
65 Earthen wall 0.69 1100 0.88 1300
66 Glass 1 1900 0.75 2500
67 Tile 1.3 2000 0.84 2400
68 Brick 0.64 1400 0.84 1700
69 Roof tile 1 1500 0.75 2000
70 Rock wool decorative acoustic board 0.064 294 0.84 350
71 Volcanic glassy composite board 0.13 679 0.97 700
72 Calcium silicate board (0.8) 0.18 690 0.92 750
73 Calcium silicate board (1.0) 0.24 1000 0.92 1100
Wood wall and base materials 81 Natural wood 0.12 520 1.3 400
82 Plywood 0.16 720 1.3 550
83 Tatami board 0.056 450 1.8 250
84 Sheathing board 0.067 630 1.8 350
85 Insulation board (class A) 0.058 540 1.8 300
86 Particle board 0.17 720 1.3 550
87 Wood wool cement board 0.13 1100 1.88 565
88 Wood chip cement board 0 15 1000 1.68 600
89 Hard fiberboard (hardboard) 0.17 1230 1.37 900
90 Medium density fiberboard (MDF) 0.12 820 1.37 600
Flooring materials 101 Vinyl flooring 0.19 1500 1.2 1300
102 FRP 0.26 1900 1.2 1600
103 Asphalt 0.11 920 0.92 1000
104 Tatami floor 0.15 290 1.3 230
105 Composite tatami floor (Type III, 50 mm thick) 0.052 208 1.3 163
106 Composite tatami floor (Types K and N, 50 mm thick) 0.034 40 1.3 31
107 Carpet 0.08 320 0.8 400