- Kích cỡ ống gió thiết kế mơ

- Kích cỡ ống gió thiết kế mới là: 1500x400; 1000x400
- Kích cỡ ống gió thiết kế cũ là: 1200x600; 900x600; 650x500; 350x500
Suy ra, Thiết kế mới kích cỡ ống gió lớn hơn thiết kế cũ.
* Thiết kế mới quy định:
- Ống có cạnh W =630: chế tạo bằng tôn dày 0.95mm
* Thiết kế cũ quy định:
- Ống có cạnh W

Kết quả (Anh) 1:

-New design-duct size is: 1500x400; 1000x400-Duct size of the old design are: 1200x600; 900 x 600; 650x500; 350x500Inferred, new design larger duct sizes of old design.* New design rules:-Tube W < 630: built by religious 0.75 mm thick-Tube > W = 630: built by religious 0.95 mm thick* The old design rules:-Tube W < = 600: built by religious 0.58 mm thick-Tube next to the W = 601 ÷ 999: built by religious 0.75 mm thick-Tube next to the W = 1000 ÷ 1500: built by religious 0.95 mm thickInferred, only old 1200x600 tube design built by religious 0.95 mm, while the new design all 1500x400 pipe; 1000x400 were built by religious 0.95 mm new design should increase in value.

Kết quả (Anh) 2:

- Size wind tunnel is the new design: 1500x400; 1000x400
- duct design size was: 1200x600; 900x600; 650x500; 350x500
Inferred, new design wind pipe sizes larger than the old design.
* The new design provides:
- Pipes edge W <630: 0.75mm thick corrugated made
- pipes next to W> = 630: manufactured 0.95mm thick metal sheet
* Design the old provisions:
- pipes next to W <= 600: thick sheet made of 0.58mm
- Pipe with W = 601 ÷ 999 edge: 0.75mm thick metal sheet fabrication
- pipes next to W = 1000 ÷ 1500: 0.95mm thick sheet made of
Inferred, old design only made of corrugated pipe 0.95mm 1200x600, while the new design all 1500x400 tube; 1000x400 are made of 0.95mm sheet new design should increase more valuable.