Pump Head Calculation of HVAC Chilled Water System Complete and Detailed information in Urdu

Рет қаралды 6,995

Tanweer Ahmed

Күн бұрын

Пікірлер: 69

@shamsheralam8862 11 ай бұрын

Thanks a lot very good explanation....very useful....great work bh

@TanweerAhmed 11 ай бұрын

Welcome

@mohamedmohideen8053 3 ай бұрын

Thanks for your explanation with options, you did not mention about pressure loss in the pipe reducers.

@TanweerAhmed 3 ай бұрын

Yes, you are right. You add it.

@mohamedmohideen8053 3 ай бұрын

Where do I find friction drop for reducers

@jawedaslam6549 3 ай бұрын

Asslamu Alaikum Tanweer sir! I have watched all your videos on head loss calculations for chilled water and condenser water, and I really appreciate your work. I kindly request that you create a comprehensive video focused on chilled water pump head calculations. It would be incredibly helpful if you could explain the routing of the piping node by node with the help of drawing, clarifying which valves and headers are involved and how you determine the pipe lengths during the calculations. Additionally, could you also explain the concepts of primary and secondary pumps, along with the decoupler? It would be great to understand where these pumps are used, their differences, and their applications.

@TanweerAhmed 3 ай бұрын

W.Salam, Ok noted and thanks

@JavedIqbal-hr2xc 6 ай бұрын

Sir, thanks for sharing a very fantastic video full of knowledge. My question is why we have consider AHU as the farthest point is having FCU. Also do we not consider return pipes and fitting dynamic losses

@TanweerAhmed 6 ай бұрын

Welcome, we have to consider farthest point unit, it may be AHU or FCU, if you found any mistake in this video then rectify at your end. Both supply and return pips and fitting will be calculated.

@qaussainiftikhar9257 Жыл бұрын

I realy like ur videos i have 3 question can u make the videos on 3 topic regarding the duct designing 1- can u explains with ASHRAE referance that how to make bell mouth for return air mean what is the velocities?? 2- same as 1 how to make wall opening size for return air mean max velocity for opening size 3- how to size flex duct Please provides some referace of standard and examples Thanks

@TanweerAhmed Жыл бұрын

Ok noted

@raajkumar-xz9xx 6 ай бұрын

nice video kindly make pump head calculation of chilled water system (closed loop ) using pipe flow expert software

@TanweerAhmed 6 ай бұрын

Ok noted

@JavedIqbal-hr2xc 6 ай бұрын

CHW coming out of the chiller will have some pressure i,e the suction side of the secondary pump, is this pressure will be minus in the final head loss of the secondary pump(discharge side).

@TanweerAhmed 6 ай бұрын

Watch this video, pressure loss of chiller is added in working.

@mohiuddin7718 7 ай бұрын

Good thanks sir

@TanweerAhmed 7 ай бұрын

مھربانی

@Basitjamil1999 3 ай бұрын

sir if both primary and secondary pump are added in chilled water systtem. How it will be design

@TanweerAhmed 3 ай бұрын

Flow of both primary and secondary pumps will remain same, and head will be different as per loop's pipes, fittings, valves, etc.

@zubaitkhan2404 6 ай бұрын

please guide should we take both the supply and return lines ?

@TanweerAhmed 6 ай бұрын

Yes

@thefirefighter8417 5 ай бұрын

Here the density unit is slug/ft3.. While calculating reynolds number We should change the slug to pound, right?

@TanweerAhmed 4 ай бұрын

Yes

@zubaitkhan2404 8 ай бұрын

aoa, please guide. you have considered a single chiller and calculated the heads on the base of its flow rate which is 778 gpm. now please tell me if the number of chillers are more than 1, for example there are 3 chillers, and the total flow rate in that case is 778 X 3 = 2334gpm. now what flow rate shall we consider in calculating the head of secondary pump, either 778 gpm or 2334 gpm. remember the pipes sizes are also change in both cases. jazakallah

@TanweerAhmed 8 ай бұрын

Dynamic Head for Chilled Water Loop = Head losses in pipes + Head losses in fittings and valves + Head losses in source units

@hidaytullagayen173 Жыл бұрын

As-salamu alaykum. Verry good it's vedio. Please Sir. You will do video of grille & diffuser selection & Ducting design

@TanweerAhmed Жыл бұрын

Duct designing videos are available on my KZbin Channel

@hidaytullagayen173 Жыл бұрын

@@TanweerAhmed Grille & Diffuser selection design

@TanweerAhmed Жыл бұрын

@@hidaytullagayen173 Ok noted

@MalikJi-om5js 9 ай бұрын

air condition ki slection kesy ki jye gi . kis kis chez ko mad e nazer rakha jye ga. kitny kilo watt electrical load ko kitny btu samjha jye ga please waiting

@TanweerAhmed 9 ай бұрын

Air conditioning selection depends on designer about various factors according to site conditions. BTU is energy unit regarding cooling capacity we proper calculate tonnage. If you know electrical kilo watt then different brands have different power consumption.

@JavedIqbal-hr2xc 6 ай бұрын

Sir, This calculation is for secondary pump. How to calculate for primary pump?

@TanweerAhmed 6 ай бұрын

I will make video on this topic Insha'Allah

@JavedIqbal-hr2xc 6 ай бұрын

@@TanweerAhmed thank and awaiting for the video.

@SaifAli-is9hb 11 ай бұрын

Ser ek video plenum box ko design kese krte h wo bhi bata do ahu fcu and vrv /vrf ductable machine per kitne velocity leke kr design karte hai aur ek plenum box slot diffuser k liye banate h uska size kese nikale hai pls ser

@TanweerAhmed 11 ай бұрын

Ok noted

@SaifAli-is9hb 11 ай бұрын

Thnku ser i m waiting

@gramathara4907 11 ай бұрын

Sir,if we are not considering the vertical hight or static head then does water will reach on the last AHU ,for every 10 Meter hight 1 bar pressure loss will be there rite? i know that it is a closed loop but still i have doubt

@TanweerAhmed 11 ай бұрын

Closed loop: no vertical height means static head will not consider

@gramathara4907 11 ай бұрын

Sir in this case no need of primery chilled water pump rite??

@basithmohemmed1274 Жыл бұрын

Assalamu alikum sir I have one question.. After insulation Why we installed vapour barrier coating in HVAC duct ..( cloth with foster 30-36) It is mentioned in the any international standards... What is purpose of vapour barrier coating... Please I need clarification....

@TanweerAhmed Жыл бұрын

W.Salam, Vapor barrier protect the condensation because atmosphere/surrounding air penetrate the insulation and cause of condensation

@basithmohemmed1274 Жыл бұрын

@@TanweerAhmed Sir , any standard mention about vapour barrier coating..? Where it's mentioned...? ashrae...ect ... Now this issue is going on ARAMCO tanajib gas plat project... now Aramco asking same question... Please if you find the standard please inform sir ...

@TanweerAhmed Жыл бұрын

Specifically, for duct insulation and vapor barriers, the ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) standards are often referenced: ASHRAE 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings ASHRAE 189.1: Standard for the Design of High-Performance Green Buildings ASHRAE Handbook - HVAC Systems and Equipment These standards offer guidance on proper insulation practices for ductwork, including the use of vapor barriers to control moisture transmission and maintain thermal efficiency. They specify the materials, installation methods, and requirements for vapor barriers in duct insulation systems to ensure energy efficiency and prevent moisture-related issues. It's important to refer to the specific sections or chapters related to ductwork and insulation within these standards for detailed guidelines on vapor barriers in duct insulation. @@basithmohemmed1274

@mohibquadri4053 Жыл бұрын

Sir can a career gap of 3-4 yrs due to family reasons affect our chances of getting selected or finding interviews for the role of fresher hvac engineers ? Do recruiters mind the gap of these yrs more or are they only looking for skills to get the work done ?

@TanweerAhmed Жыл бұрын

Don't discuss this gap in interview. If asked by recruiter then inform real reason. Mostly they only looking for skills and confidence of fresh engineers. I think so.

@mohibquadri4053 Жыл бұрын

@@TanweerAhmed Yes I'll do as i say but how to put that gap on my Resume ? Like internship done in 2019 but not joined any company since then.. is it also good to not mention anything on resume also ...

@TanweerAhmed Жыл бұрын

Yes, don't mention@@mohibquadri4053

@arunv503 5 ай бұрын

One doubt..suppose..pump head 30m,flow rate 1200gpm.power 49HP...need to use 2 set pump on each primary and secondary..how to select pump..each pump should be 49hp ..or need to select a pump of 600gpm..if we select 600gpm..should i keep head and power same..

@TanweerAhmed 5 ай бұрын

Both primary and secondary pumps flow will be same but head will be changed as per piping length, fittings, equipment etc. If head change then power in hp will be changed.