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How the pressure drop for inline tank to be consider for closed loop pumping? I don't have manufacturer datasheet.

Thank you all..!!

The pressure I am getting at individual pump IN (2bar) and OUT(7bar). Pipe size is 200mm. This, including all other 3 pumps connected to common header which has 400mm Diameter. On supply side common header if i put the pressure guage its not 7 bar. the reason is the bigger pipe diameter. How to...

In a chiller plant , 4 CHW pumps are connected to common headers in Parallel. Each pump has DP of 5 bar (return 2 bar and supply 7 bar, flow 70 l/s, supply return pipe diameter 200mm). Common header flow when all pumps are in duty, flow is 280 l/s and pipe diameter is 400mm. How to calculate DP...

In 10 floor building, a common exhaust duct riser serve each floor pantry. At 10th floor, main riser flow 400 l/s (350 x 250mm) and brach to 10th floor has flow of 40 l/s (150 x 100 mm). When putting this values in ashrae duct fitting (take-off), i am getting more than -50 pascal at brach and...

Hi Team, I need one confirmation. Does AHRI certification is applicable for Air cooled chiller less than or equal to 200 TR capacity only? (Note: Unit rated frequency is 50 Hz ).

Thanks to all. I will try out the activities mentioned herewith. Will respond back the results. GT-EGR 52 dB is measured with handheld Sound Level Meter. NC measurement were not carried out.

A completed hospital project. Got a complaint for higher noise level of around 52 dB in staircase , where as acceptable is 45 dB. Cool air supplied through FCU unit. After adjusting flow/vcd, clean filter and all, we didnt got much success. We further analyzed the drawings and found that the FCU...

I might have asking a silly question. Can we reduce the relative humidity, subsequently WB of air without changing the dry bulb temperature.

Let me correct your wordings.. Not couple of years...... but 29hr: 35min: 41sec : 05ms

You are great. Thanks Skogsgurra.

There are two machine A & B which are running simultaneously. Both machine can provide 24V output when running. By using output of these machines I want to operate 3rd Machine C, provided following condition - if both or Any of the machine A & B is running, machine C should operate if both...

Hi, I want to ensure whether the actuator installed at the VAV boxes has the correct Torque. The VAV box is quite old and not started since, last 2 years and manufacturer also not responding. Static Pressure is 600 Pa, Flow - 1100 L/s, VAV neck radius - 120mm, Multiple blade.

Thank you..!!!

Hi, In Distribution board, I seen kA (SC) rating of 415V 3P 32A MCB as 25kA which is more than designed for the panel (as compare to panel SLD 10kA) What could be the consequences for selecting higher kA MCB?

Hi Willard, There is no return to the AHU. These are 100% OA Units serving to multiple zones.

Actual rise we saw is 4.1°C

Thank you folks..!!

Its a real situation. And temperatures are positive. I want to convince my mate that there will be slight rise in the temperature while flowing through the longer length of pipes. But don't have evidence to prove.

Thanks to everyone....