Answer / jaikumar

IN REFRIGATION WE TAKE
1 TR = 400 CFM (cubic feet per minutec)

As we all are aware of the following formula which is;

flow = area * velocity
i.e.
Q=A*V
( where Q= Air quntity in cubic feet per minute,V =
velocity in feet per minute,A = Area in square feet)

the value of velocity is depend on the different type of
air conditioning application
generaly for offices 1200 FPM
so put this two values of velocity and CFM in above foremula
we get DUCT AREA in sq.ft. then take the height or width as
per site.

now (Area /height = width)

that is the duct size.

Brief difference between lead screw & Ball screw.

1 Answers   ARDE,

---

you did b.tech why u r intrested marketing field ?

0 Answers  

---

Name the different shops?

0 Answers  

---

WHAT IS EASY & PERFECT METHOD TO JOIN CONVEYOR BELTSEXPLAIN IN DETAIL

4 Answers   HAL, Vedanta,

---

Explain the difference between blower and fan?

0 Answers  

---

the compression ratio of petrol engine is always less than c.r. of deseal engine why?

3 Answers  

---

Can we achieve condenser vaccume more than 1 bar?

1 Answers  

---

What is the purpose of engine preheating?

1 Answers  

---

what is 1st angle & 2nd angle drawing difference?

2 Answers   ITC Infotech, L&T, Mercedes Benz,

---

which type feect in generator and turbine in reverse power protection

0 Answers  

---

What is the melting temperature of the cng long tube fusible plug? And can I use lead solder Sn97Cu3 (Melting temp S/L 227-309 °C) Materials of tube : AISI 4130 Alloy steel

0 Answers  

---

After any cause of repaired how i start the engine by slow speed 800 to 900 rpm electronic control moudle engine [cummins]

0 Answers   Cummins,

---