VIPSolutionsAct like a helpful tutor and exlain me : Give step-by-step solution with explanation and final answer:A round main supply duct will carry an airflow of 2 , 0 0 0 CFM with a static pressure drop of 0 . 3 2 5 3 5 ” w . c . What size duct diameter will each branch be ? Use the Equal Friction Duct Sizing Chart provided below or the PDF version provided in Moodle. Fill in the number of the diameter,100 hc) . : . EEL po, of 6 2 Pir (IN INCHES) yr SEERA Saber 0 RSS Xd ESR ol L111: 77 ooo NTH RHA SSat sa 77 “ Si mas a 8 wl] I NAN NN as Sis EE 102A] SR SEAT ay oe Pratt NAN XY NAS ALTRI Sasa fret i RHR LITRE, Sei gran NE g SHEL a ae RI AEE OSE ' gE [SSH PATA Semi ol JA z
Question:
Act like a helpful tutor and exlain me :
Give step-by-step solution with explanation and final answer:A round main supply duct will carry an airflow of
2
,
0
0
0
CFM with a static pressure drop of
0
.
3
2
5
3
5
”
w
.
c
.
What size duct diameter will each branch be
?
Use the Equal Friction Duct Sizing Chart provided below or the PDF version provided in Moodle.
Fill in the number of the diameter,
100 hc) . :
. EEL po, of 6 2 Pir (IN INCHES)
yr SEERA Saber 0
RSS Xd
ESR ol L111: 77
ooo NTH RHA SSat sa 77 “
Si mas a
8 wl] I NAN NN as Sis EE
102A] SR SEAT ay
oe Pratt NAN XY NAS ALTRI Sasa
fret i RHR LITRE, Sei gran
NE
g SHEL a ae
RI AEE OSE '
gE [SSH PATA Semi ol JA
z
This is AI generated Response.
Asked by: manish kumar
Created at: 2025-10-06 08:59:10
Asked by: manish kumar
Created at: 2025-10-06 08:59:10
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# Step-by-Step Solution: Duct Sizing Using Equal Friction Chart
Let's find the required duct diameter for a **main supply duct** that carries **2,000 CFM** with a **static pressure drop** of **.325" w.c./100 ft**.
---
## 1. **Locate the Given Values on the Chart**
### - **Air Flow Rate (CFM):**
Find **2,000 CFM** on the bottom horizontal axis.
### - **Friction Loss (inches W.C./100 ft):**
Find **.325** on the left vertical axis. This is between **.3** and **.4**.
---
## 2. **Draw a Line Between These Points**
- From **2,000 CFM** (bottom axis), draw a vertical line up.
- From **.325** (left axis), draw a horizontal line across.
- The intersection of these lines is your reference point.
---
## 3. **Find the Corresponding Duct Diameter**
- From your intersection point, look **upward** to see which **duct diameter** line it falls on or is closest to (top axis).
---
## 4. **Step-by-Step on the Chart**
### a. **Mark 2,000 CFM** at the bottom.
### b. **Mark .325" W.C./100 ft** at the left.
### c. **Trace up from 2,000 CFM** and **across from .325** until they cross.
### d. **From the intersection**, move **upward** to see the duct diameter.
---
## 5. **Reading the Chart**
- The intersection point (2,000 CFM at .325" W.C./100ft) lands **between the 12" and 14" duct diameter lines**.
- It is **closer to the 14" line**.
---
## 6. **Final Answer**
### **The required round duct diameter is approximately:**
# **14 inches**
---
## **Summary Table**
| Parameter | Value |
|------------------------|--------------|
| Air Flow Rate (CFM) | 2,000 |
| Friction Loss (in W.C./100 ft) | .325 |
| Duct Diameter (inches) | **14** |
---
### **Explanation**
- This is a standard method using the Equal Friction Duct Sizing Chart.
- The answer is **14 inches** for the main round duct carrying 2,000 CFM at .325" W.C./100ft.
---
**If you want to size a branch duct or have a different CFM, repeat the same process for that CFM value!**
---
**Let me know if you need help with a different airflow or friction loss!**
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