HVAC Static Pressure

1)What is mean by static pressure
2)how we can calculate static pressure
2)difference beteween mm of Hg and mm of water guage.
3)How we can relate and calculate Static pressure in manufacturing AHU(air handling Unit)
4)Use of static pressure in HVAC
5)How we can relate and calculate Static Pressure in duct design

R. Kumar,
You need to enroll in a few Mechanical Engineering Classes that teach all of this. If you think that is the purpose of this comments, you are mistaken. :-->

thank you.

I am engineer in Installation & commisioning of HVAC system . Pl , mail me the any subject , which is related to HVAC system.i.e HAP [carrier,trane ], heat & cooling load calculation, pump designing of HVAC system.

1). What look like static pressure room for clean room (pharmautical) ?
2). do like stainless steel material from or what ?
3). thanks a lot

how we can calculate static pressure

How we can relate and calculate Static Pressure in duct design

what is static pressure?

i What to know about air static pressure in air duct system.

1)What is mean by static pressure
2)how we can calculate static pressure

Dear Tim,
If we are calculating the external static pressure (E.S.P) through a supply duct for an AHU, the result was 1"W.G. Do we still need to Cal. the E.S.P for the return duct? Considering that if the AHU blower is capable of supplying air through a resistance of 1"W.G, it will be able to pull back the return air through 1"W.G resistance. As it dose not make since to select the AHU Motor with an E.S.P of 2"W.G (Supply + Return), it will be too high causing vibration & noise issues. Probably the higher value between the supply & return E.S.P need to be selected.
Kindly advice?

Wouldn't it be great if people paid attention to instructions or took the time to read? Well, just a comment about design. I have a brand new house, two story. There is 5T and 3T Carrier unit, 16seer r410. 95%furnaces. After buying the house, i ran the a/c system. These installers decided that their design was so perfect, they didn't need volume dampers. They tried to argue with me and came out to the house, i had the builder come out as well. They told me to shut the register to the room... I politely said "and what, the air will just know to run back to the plenum?" Your design is faulty and undersized, you didnt take into account any heat load, no traps were found on the condensate and it actually had a vacuum on it and overflowed into the ceiling. Needless to say the builder has asked for my services for his projects. People need to pay attention and research their jobs so they don't have to go back and do the job again.

IF I HAVE TWO 90 DEGREE BENDS IN MY DUCT WORK,USING FLEXIBLE DUCT WORK IN MY A.C. SYSTEM,AND I STILL HAVE STATIC PRESSURE,COULD I PUT METAL DUCT WORK AT THE 90 DEGREE TURNS TO REDUCE STATIC PRESSURE.I BELIEVE THAT IS WHERE THE STATIC PRESSURE BUILTS UP.

hi im an hvac engineer
i want t know about the air and water sysytem

1)how much static pressure needed at the end of the duct connected to air conditioned room???
2) how can we calculate the total outlet pressure developed by the centrifugal fan??
Total pressure = static pressure+friction loss+velocity pressure

is it correct???
then how can we calculate static pressure???

Greetings,

Next to accumulated air particles, in your opinon, what is the second most contributing factor increasing static pressure within a Whole-House HVAC system?

THanks in advance!

Dear Sir,

we are coming up with new project like manufacturing pharma equipment like pass box, rlaf, etc,
i need to calculate some things like
how to do the blower selection ,what will be the cfm in it ,n how to calculate the static pressure for a specific blower
plz reply to me

regards
Darshan

I wish to view commments.

what is static pressure

how we can calculate static pressure

please send me details of static pressure calculation, TAB, ACH AND air velocity of HVAC SYSTEM

Hi,

How can we calculate the duct static pressure and differential pressure while doing the duct pressure test ...can u please eloborate this in practical method

Good explanation

want to confirm how can calculate C.O.P

Dear All
Please give me the calculation of air supply fan & static pressure.
Depth of pit os 17.5 mts
Width 4 mts
Length 6 mts.
I appreciate if any one reply to me at this id (saifahmed.syed@gmail.com)
Regards

Syed

Kindly send me some informations.
how can check the duct size with out ductulater ?

I am an engineer in Installation & commisioning of HVAC system . I want to learn indepth hvac design details like static pressure calculations , pump head calculatios, heat load calculations.
please mail me those details.

1)How to find static pressure?

2)How can calculate ducting sizes by equal friction method ?Pls send an example.

send me the details of static pressure?and its measurements?

quesion:
e.g if i enter 500cfm in a room and return 400cfm out of it, what pressure will be generated by the remaining 100cfm

I have one bedroom which the vent is a distant from the gas furance is there a add blower I could put on tube in basement, to help push the air into the room? thank you

Sir,

how we calculate the static pressure in air conditioning system? and how we calculate SPWG for air cooling system.
just imagine we have 5000 sq.ft space. duct length is approximate 60 R.Mt. for air cooling.we calculate 400000 CFM required. Air washer manufacture require SPWG. Please guide us how we calculate ( in simple method with example)

What is static Pressure in HVAC ?

how i can calculate the pressure drop through the duct?????

how we can caliculate the static pressure : ahu , coil , filter ,fan ,ductnetwork how much we consider the pressure drop

wahat is a static pressure and how way it is caluclated annd helpful in designing of ducting and selection of ahu

i want to know how do the pressure sensor in the hvac ?

How do know if you have the proper amount of static pressure going across your cooling coil? I'm having a problem with the over drip of condensate filling my over drip pan. Condensate is blow over condensate pan and right into over drip. I'm tired of vacuuming the over drip pan every 4 hours! Help!!

how we can calculate static pressure, total static pressure velocity pressure externa static pressure

Please tel me which pressure I have to consider while locatin operating point on fan performance curve the total pressure or the external static pressure?

I am having a contractor convert my one zone heating and air system to a two zone system which will improve my efficiency. He has to install a bypass on the supply side of the system. My choice is Independent Pressure or a Barometric system. There is a debate between the contractors I will eventually hire as to what works best. I know a Barometric design won't involve electronics so I assume less chance of breakdown ?
Is one system superior ?

HVAC UNIT SUPPLIER

Specilized in Air Shower,pass box,clean bench,Laminar flow clean shed producing

How does one calculate static pressure vs dynamic pressure at any given point in a duct work system with air speeds <50m/s?

if i have a fan doin 80% of design at 40hz with a static pressure of 120pa... what is the calculation 2 get 100% by pa?? pls wb asap much appreciated cheers

What is reason your main duct does not get smaller as branch runs are taken off.

which is related to HVAC system.i.e HAP [carrier,trane ], heat & cooling load calculation, pump designing of HVAC system.

dear sir i need hvac basics what is hvac calculations pump calculation,static pressure calculation duct,heat load minimum basics

how to measure static pressure in AHU