本文摘自暖框科技（Warmframe Technology）与美国门窗幕墙评级委员会（NFRC）联合编译的最新版《THERM 7 / WINDOW 7 — NFRC 热工建模手册》中文版
pane
Imitation pane (external pane)
Simulated Divided Lites (SDL) refers to a glazing system that attaches some decorative elements to the interior and exterior surfaces of the glass, and it has an appearance similar to that of a real small divided window. The glass system of the imitation pane has a metal reinforcement inside, which is a system with the material pasted on the outer surface of the insulating glass. The latter does not need to be modeled according to ANSI/NFRC 100, but despite this, Figure 8-23 shows a complete pane-like model, which is an option for the manufacturer (modeling/not modeling) for the exterior of the glass.
Figure 8-23: A complete imitation pane model
Internal panes, such as metal reinforcements in glass system cavities that mimic panes, are an exception to the Linking rule of frame cavities and glass cavities that are introduced. Modeling is only required if the distance between the outer surface of the inner pane and the inner surface of the glazing system is less than or equal to 3 mm. A simplified assumption is also made for the profiled inner pane, i.e., the 5 mm rule does not apply, and the cavity between the edge of the pane and the glass is modeled as a frame cavity with boundaries extending to the top and bottom of the pane components, see the example below for a detailed description.
In THERM:
① 设置 Cross Section Type（截面类型）为 Vertical Divider（竖直窗格）。
(2) For panes, the steps for introducing the glass system are the same as for other products, and the settings are as follows:
Orientation（朝向）：Up
CR Cavity height（抗结露空腔高度）：1000 mm（39英寸）
Sightline to bottom of glass: The height of the opaque component at the top, not the distance between panes. Since in this example, the height of the exterior and interior decorative elements (SDLs) is the same, the height of the interior trim is measured here – 31.8 mm.
Spacer height（间隔条高度）：同Sightline to bottom of glass（视线与玻璃底部之间的距离）
Edge of Glass Dimension（玻璃边缘尺寸）：63.5 mm（2.5英寸）
Glazing System Height（玻璃系统高度）：150 mm（6.0英寸）
Sightline to shade edge（视线到遮阳边部）：0（遮阳系统没有建模）
Gap Properties（空腔属性）：勾选Default（默认）
Draw spacer（绘制间隔条）：不勾选
Figure 8-24: Import the first glazing system with the orientation facing up
(3) Below the first glazing system, import the second glazing system, and the Locator does not need to be moved, but note that in the pop-up dialog box, select Add as additional glazing system, and the specific settings are as follows:
Orientation（朝向）：Down
CR Cavity height（抗结露空腔高度）：1000 mm（39英寸）
Sightline to bottom of glass（视线与玻璃底部之间的距离）：0
Spacer height（间隔条高度）：0
Edge of Glass Dimension（玻璃边缘尺寸）：63.5 mm（2.5英寸）
Glazing System Height（玻璃系统高度）：150 mm（6.0英寸）
Sightline to shade edge（视线到遮阳边部）：0（遮阳系统没有建模）
Gap Properties（空腔属性）：勾选Default（默认）
Draw spacer（绘制间隔条）：不勾选
Figure 8-25: Import a second glazing system with the direction facing down
(4) Draw a polygon representing the pane in the cavity, or you can copy and paste directly from another THERM file. The example below is an aluminum pane centered in a cavity in a glass system. Since the interior and exterior trim strips (SDLs) determine the sightline, this pane model looks slightly different from what it looks in the previous example (with more cavities at the top and bottom of the pane).
Figure 8-26: Drawing a temporary polygon as positioning for a metal reinforcement
(5) Click on the toolbar first
shortcut icon, drag the dots on the polygon representing the cavity of the glazing system so that it is flush with the top and bottom of the pane (as shown in the left image of Figure 27), and then use Frame Cavity NFRC 100 to fill the cavity between the pane and the glass and inside the pane (as shown in the right image of Figure 27).
Note: In this example, the glazing system is a closed insulating glass. For non-enclosed double glazing, the 5 mm rule applies.
图 8-27：先用Move Points拖动玻璃系统空腔的点，再用Frame Cavity NFRC 100填充剩余的空腔
(6) Draw a polygon that represents the interior and exterior decoration components of the imitation pane and give it a suitable material.
Figure 8-28: Draw a polygon that represents the interior and exterior elements of the imitation pane and give them the appropriate materials
⑦ 定义边界条件，Radiation Model（辐射模式）设为 AutoEnclosure（自动封闭）。
Figure 8-29: Assign boundary conditions and U-value labels
(8) Calculation results.
Figure 8-30: Calculate and view the results
⑨ 保存 THM 文件：主菜单 → File → Save As…
(10) Import the THM file containing the calculation results into the WINDOW Divider Library, as shown in Figure 8-17. FOR MORE INFORMATION ON IMPORTING THERM FILES, SEE SECTION 4.7.3: IMPORTING THERM FILES IN THE WINDOW USER MANUAL.
图 8-31：将THM文件导入 WINDOW Divider Library
(11) Use the newly imported pane on the main WINDOW interface to calculate the performance parameters of the overall product.