⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

@oscarmaidana6476

7 жыл бұрын

chiller

Thanks a lot, it helps me a lot in calculating the cooling capacity inside a company to know how much tons we need to produce

Hi, first of all I want to thank you for taking up our design knowledge to another level thru these videos, one request calculation of vrf/vrv outdoor unit will be really appreciated.

@MuhammadImran-lf1hv

4 жыл бұрын

As slamu alaikm I am from Pakistan where you living ,I am talking in Urdu,English also,, yet brother,there has conversation 2 calculation and the answer is same,please tell me what is this,there parameters is different and answer is what happen this please given me a answer,quickly fast.

@EngineeringMindset

2 жыл бұрын

New VRF unit video here:➡️ kzread.info/dash/bejne/Zp1lusmcgJTando.html

waoo cool video, I have Senior project deal with Thermal Energy system. after watching this video it open my mind how to get the job done. thank so much .

Thank for your video, but I’m still a little confused about the temperature difference. While chillers are turned on or off, the outlet temperature will change drastically causing the temperature difference also change. Should I take the temperature difference in the two time period as normal or there is another way to tackle it. Thanks.

Muito interessante com boas explicações que ajudam muito para desenvolver um bom trabalho

Hi Paul. Thank you so much for making engineering so simple to understand. Requesting you to make a video on detailed sizing & component selection calculations for Chiller/Heat Pump.

@EngineeringMindset

Жыл бұрын

I have some videos and also made some videos for danfoss, on their channel. Search for coolselector 2 tutorial

This site is better than my lecture class, in detail, thank you

nice video, excellent explanation. just a little bit error in some unit & results computation. i just have a question how can we design the building cooling capacity. meaning what cooling capacity do we install, pls. indicate all the parameter or the requirements for the right design. hope you answer my question. i wait for it.

awesome explanation sir

If my load is not water like in this video. Do I use the density and specific heat of the liquid load I am using?

Hi, Great video ! Thank you very much for sharing. There is an error in the water density unit (in the definition) : kg/m instead of kg/m3. But the wright unit is used in your calculation. Best regards.

@rajivgandhi7016

4 жыл бұрын

Good..

thank for update..really nice to help for me

Learn *CHILLER EXPANSION VALVES* here: kzread.info/dash/bejne/loyduJeSqrfAgZc.html

Hey Paul !! Now you Got Advertisement on your Video :D I AM your oldest follower , Now you not only buy a coffee but also Dinner for your team Hhahah Great , God Bless You and Your Team :-)

@EngineeringMindset

7 жыл бұрын

+Muhammad Zaroon yeah great to see you back again, thanks for being part of the community. Unfortunately the websites shown were not paid ads they are genuinely websites I used at university so I just recommend them. We're not in it for the money, we enjoy helping engineers all around the world, but if we can get some funding it would be great to make even better quality videos.

thanks you... i can used this video to refresh my knowledge ..

good information!! but i think in minut 6:42 have one error is not 853357 btu/h

hello 2 questions that I have 1 If using chiller manufacturers flow curve chart do i still need to add the n density factor or thats built into that? 2 Necessary to convert to Kelvin vs Celsius? more accurate? thank you! stan

I'm a Master HVAC Tech. In New Jersey, I would be interested in you explain how to properly size FCU's ( chilled and heat) How determine pump size. Thank you

@sururhabib5162

3 жыл бұрын

hi sir can you help me am working on chiller its efficiancy dicriasing from time to time & there is an alarm low pressure analog it disterbs the broduction

great work👏👏👏. my question is why we take average temperature for this calculation? secondly I have problems in calculating IPLV and NPLV of chiller. could you tell us what these values are and how to calculate them? I request you to make videos on pump head calculations, heat rejection by cooling tower. I know I am asking you too much but believe me you are inciting us to become complete HVAC Engineers.

@EngineeringMindset

7 жыл бұрын

Using the average will give a more accurate answer, try using the values at inlet or outlet temperatures and there will be some difference.

@MrTheelicitor

7 жыл бұрын

Great videos mate. I may be wrong but I think you had to divide the temp difference by 2 to get the average of the temperature as per your original formula. I stand corrected.

Hi can someone answer my question please. i have an exam soon. what happens if you increase the water flow rate?

Thank u sir, will u plz help me to design air cooled condensor

nice information

At what temperatures is your temp in and temp out is that what your minimum cooling is?

Thank Sir, I have a question that same formula can be used for air medium to calculate the Air conditioner cooling capacity. Or any thing different to be used. If any pls make it as a video.

so, in short it's like E=mc*delta T, with rate of change (or take time derivative to get Q) as taught in high school physics

Hi, i dont understand some things about chillers. I need to get down the temperature (from 36°C to 26°C) of a outdoor pond (24,000L), i know that in this case i need 1,713,168 btu to get down the temperature 10°C, but when the temperature getdow at 26°C, i will still need 1,713,168 btu to maintend the temperature at 26°C, or it wil be needed more or less btu ?. what factor i should to consider for make the calculation?. Thanks for the help

Is pump for water inlet or outlet of evaporator? Where pump is present for about condenser?

@mikeramerez569

5 жыл бұрын

The water is pumping through the evaporator (so in answer to your question the pump is for both inlet and outlet) and continues to the Fancoil units within the building. The compressor drives refrigerant through both the evaporator and condenser without mixing with the water in either (the evap or cond). The condenser has it's own pump that circulates the water through the condenser and up to the cooling tower. These constitute 3 separate circuits that never mix. I hope this helps.

Please make a video on equipment selection in HVAC. AHU, FCU ,Roof top unit. Chiller ,boiler

Nice video sir , could you please upload the video related to compressor capacity calculation of refrigeration system ? Compressor is driven by electric power so why do we show capacity of compressor in TR instead of HP ?

@EngineeringMindset

6 жыл бұрын

Explained here: kzread.info/dash/bejne/hH2tj8usg5qZhdo.html

Hey, small type at 6:44. I believe the value of BTH/hr needs to be on the 8 million range, now it’s at 800 thousand range. Your imperial value at 9:13 is correct.

@babac4407

3 жыл бұрын

Yup, value in BTU is wrong. It should be 8 million range

How calculate condensor load.pls make video for that

when we are calculating specific hear capacity & density of water so way we use 1 bar pressure with average temperature in table

hi. i just want to know if why you used atmospheric pressure to get the density of water?

@EngineeringMindset

6 жыл бұрын

the properties of water barely change with pressure at these levels, more important is the temperature

Nice Mertic Fromula!

Hi Paul how r you? Chillers circuit consist of 35% glycol & 65% water and you have mentioned specific heat capacity of water only ? Is glycol has the same specific heat capacity as water? If not what is specific heat capacity mixture of water and glycol?and what’s the density per kg? Thanks Paul

Thanks

thank you

i want to know how you get values of density and specific heat at avg temp

@mohdirfan-xy3ny

7 жыл бұрын

same question??

@EngineeringMindset

7 жыл бұрын

How? was explained early into the video kzread.info/dash/bejne/dI6suqudqLmxlbw.htmlm52s Why? because it will produce more accurate figures using average compared to highest or lowest values

@uppulurisri8072

4 жыл бұрын

Same question for density of specific heat

how to calculate volume flow rate??? please reply

If the air cooled chiller is off but the bms valve ( actuator valve ) is open its not closing, What could be reason for this ...

I am using Brine(Methanol+water) as a fluid to maintain the temperature below -5 , then how should I take the specific heat capacity, density and volumetric flowrate?

How calculate the capacity of chiller for koi pond?

@EngineeringMindset

6 жыл бұрын

you decide a flow rate and then decide what temperature you want the water to return at and what the water temperature will be coming from the pond, or make assumptions and follow this video

Can you explain How did you take the GPM value of the pump...?

@EngineeringMindset

6 жыл бұрын

Try this video kzread.info/dash/bejne/pnVlwbhvXce6mLA.html

Excellent video. I have 1 doubt please solve it. From internet i saw this formula relation GPM = 24*TR/delta T This is for water. Now for derivation of this relation: We know from heat equation m*c*deltaT = TR*3.52 Where m=mass flow rate of water in kg/sec, c= Specific heat of water in KJ/Kg-C, TR= Tonnes of refrigeration. Now m = Density*volume flow rate Now putting, c = 4.2 KJ/Kg-C and Density = 1000 kg/m3 We get, 4200*Volume flow rate (m3/s)* deltaT = TR*3.52 Solving, Volume flow rate = (3.52/4200)*(TR/deltaT) m3/s Now to convert it in GPM we know 1 m3/s = 15850 GPM So, V = 13.3*TR/deltaT These 2 relation is not matching. Please check and tell where i am doing wrong. I have checked multiple times. Please help.

helpfull

How to calculate required compressor power for the same ?

Amazing ..

please confirm 101.325kpa is this atmosphere press. or evaporater inlet water press. ??

@EngineeringMindset

6 жыл бұрын

Water isn't compressible, at least at these pressures, so the pressure you use is negligible and the temperature is the key factor

ty

Sir, 999 kg/m3 and 4 kj / kg k will be remained same for all calculation ?? Pls clear this query__

This is semantics really and should not take away from the awesome video (I'll still buy you a coffee Paul) but the final calculation for BTU/h is not correct. I believe it was just a typo but it should be 8,530,355 BTU/h. If you figure 12000BTU per 1 RT. 12000 x 711 = 8,532,000. If you rather 3412.142BTU per 1KW. 2500 x 3412.142 = 8,530,355 BTU/h. BTW I have learned more watching your videos than studying any other format. Excellent work and I particularly like the blender 3D renderings of the machinery. Best wishes.

@lelandartripe860

4 жыл бұрын

It is correct on the imperial calculation.

What is kw for 8.5tr 3ph

How to find pressure data 101 kpa?

hi where can I get the value for thw density @ average temp and specific heat @ average temp. thanks

@frigaid

Жыл бұрын

lookup table

Does the efficiency of a chiller stay constant for the life time of operation or does the efficiency fall with the chiller depreciating value?

@EngineeringMindset

5 жыл бұрын

It will fall, especially with poor maintenance. Check our videos on chiller efficiency and also chiller replacement savings

@toyinorodare4072

5 жыл бұрын

Thanks for your reply.

How to calculate TR of chiller when we add GLYCOL (antifreeze) (10%) to water ?

@frigaid

Жыл бұрын

Same, just use the Specific Heat & Density of your Glycol-Water mixture

ممتاز ،،، excellent

cool

Is Chiller Cooling Capacity Qe?

How do you calculate Chiller tonnage with Cooling Capacity (kW)?

@EngineeringMindset

6 жыл бұрын

either from the design flow rate and temperatures or from the refrigerant

@Mechrank

6 жыл бұрын

Do u mean convert tonnage to kW?

@SombraLocs

6 жыл бұрын

MUHAM PRODUCTIONS yes

@Mechrank

6 жыл бұрын

I think 1 KW = 0.284345 tonnage

What if you have 25% glycol + 75% water in your chiller loop?

@EngineeringMindset

6 жыл бұрын

Adjust for the density

@InSaudi

6 жыл бұрын

Thank you for replying, so to adjust do i have to do it like this? correct me if i am wrong 1000 kg/m3 (water density) + 1100 kg/m3 (glycol density) = 75% of water density (750 kg/m3) + 25% (275 kg/m3) = 1025 kg/m3 ? How about CP values ? how to adjust it ? and where can i get CP value of glycol? Also i have seen in another video following formula for Capacity (Tons) = Sp heat x Sp gravity x fluid flow rate x Delta T/ 24. I wonder if this can be applied as well? please support. Regards,

you do a great thing are you in London?

How to calculate the specific heat of water

👏👏👏👏

6:48 Imperial Equation

How to get volumetric flow rate?

@frigaid

Жыл бұрын

Use a flow meter

390 arti cooling tower capacity in ton. Please convert

Metric ! not Mertic :D nice video, as always!

@EngineeringMindset

7 жыл бұрын

Ka haha well spotted, oops

@charlessadaka

7 жыл бұрын

The Engineering Mindset hydraulic régulation for residential building vidéo would bé really appreciated !

How to calculate the cooling capacity of air cooled chiller

benefit

No need to add 273.15K to the celcius temperatures when talking about a differential. DTc=DTk

Tu phir