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@ Chas, So from your post you are suspecting it to be following 2 probable reasons: 1) Air is getting leaked from the AHU itself 2) Some amount of air is staying within the pipe itself without being discharged at the end destination?

The flow of the air path is as follows: Suction of air from conditioned room at a temperature of 25 deg C ---> Passing of AIr through Blower--> Passing of Air through Cooling Coil 1 that would cool the air from 27 deg C to 5 Deg C--> Passing of air through Cooling coil 2 that would cool the...

We are measuring this using an anemometer.

My bad, I have checked the calculations. For my conditions of 27 Deg C, 50% RH the humidity ratio is 0.01KG/KGda. So the water is hardly 1.1% of the total weight. Apologies if In case if I was not able to mention that there is a cooling coil. As a described earlier there is an AHU in which...

Hello Everyone, My thinking goes in this manner: Mass Flow of Inlet = Mass Flow of Outlet Inlet Side: Mass Flow of Dry Air + Mass Flow of Water in the Air = Mass Flow of dry Air + Mass Flow of water in the Outside Air ( This Water flow rate would be mostly zero as the cooling coil is at...

The entire flexible hose is insulated and cladded with the 24 Gauge Aluminium. So I am not able to do those things. Otherwise is there anything like Back pressure of the fan or something like that which is coming into the place?

Dear All, I have installed a fresh air system as shown in the attached picture. However I could notice that the air flow rate that is being taken at the suction side of the AHU is not being delivered at the end of a 23 meter insulated flexible hose pipe that is used to distribute the air...

We have a water based flow system as shown in the attached picture. Water is flowing through gravity in a 65 mm Pipe Line. But the flow of water through the pipe line would be intermittent. So to avoid the dry run on the pumps we want to trigger the pump contactor through a signal from the flow...

we have got 2 Fan motors of 0.5 HP Each. Our service engineer says that we need not provide any seperate starter for motor capacities till 1 HP. But in my career all through out I have ran fan motors of even 0.1 HP also with starter only. Can you please advise if for motors less than 1 HP we...

Thanks Inly and Dbill for your replies. The schematic of the chiller system is as follows. The load side of AHU is 1710 TR, where as the chiller capacity is 1610 TR. The flow rates on the chiller loop is 8200 LPM where as on the process loop it is 8700 LPM. Generally we size the AHU capacity...

I am using an 800 TR chiller system with the load distribution as shown in the attached schematic. So essentially we have an underground storage tank in which we are supplying chilled water and are also putting the return water from AHU into the same underground tank. But in AHU we are not...

Join Date: Aug 2015 Posts: 1 siril is on a distinguished road Need to assess the backpressure I have a pipe header of 100 mm. Branch 1 supplies 42 GPM of water at 2 Kg/cm2 pressure through 65 mm dia pipe. Branch 2 supplies 13 GPM of water at 1.5 Kg/cm2 pressure through 40 mm dia pipe Branch 3...