It is possible that you can remove the air at the high point but still have air in the solar collector. You could have another pocket that can trap air in the...
247
ndlaham
Jan 30, 2012 8:16 pm
I am convinced. I guess I am just not getting the results I expected so I am trying to cover all basis and understand the theory. What about if the water is...
248
jacqueschaurette@...
Jan 30, 2012 9:17 pm
You are covering the same ground over and over, I am not sure I can add anything. The pipe has to be full to recover the energy put into the static head. There...
249
S. L. Abhyankar
sl_abh
Jan 31, 2012 11:57 am
Dear Nick, For effective venting of air at high spots, people use very commonly air-release valves. ** Regards, SLA ... -- Cordially, S. L. Abhyankar ...
250
zefmvieira
Feb 15, 2012 3:34 am
Hello, my name is José. I'm doing a master thesis in solar powered pumping system, using a centrifugal pump. I'm trying to model the behavior first in...
251
a.rahman
mohdzain3496
Feb 15, 2012 1:41 pm
Under commissioning, Three Vertical centrifugal pumps connected in parallel on Azud filtration unit , to boosts and to circulate cooling water for air...
252
zefmvieira
Feb 15, 2012 2:49 pm
I know from jacqueschauret that "Power is proportional to torque and shaft speed. Power is also proportional to total head, flow rate and pump efficiency. So...
253
Juned Ansari
firdousdream001
Feb 15, 2012 4:43 pm
Assalamualaikum, Can you please let us know the pressure under working condition? Juned Ansari Sent from my Windows Mobile® phone. ... From: a.rahman...
254
jacqueschaurette@...
Feb 15, 2012 6:34 pm
Hello Mohdzain, one potential problem is that the pumps are sized too small for the system, review the calculations and make sure that the selection is...
255
S. L. Abhyankar
sl_abh
Feb 16, 2012 5:48 am
Dear Mr. A. Rahman, It seems that although the pumps are rated for a head of 50m for 330 m3/h, the head in the system is much less. I assume pump...
256
S. L. Abhyankar
sl_abh
Feb 16, 2012 5:58 am
Dear Mr. Jacques Chaurette, My mail to Mr. A. Rahman bounced back. Pl. check and forward suitably. Regards, SLA ... From: Mail Delivery Subsystem...
257
Juned Ansari
firdousdream001
Feb 16, 2012 6:53 am
Dear Mr Abhyankar, I agree with your analysis. I too would have come to the same conclusion after getting aware of the pressure in working condition which I am...
258
p3llctech
Feb 20, 2012 9:06 pm
First of all I am new to the group and would like to say hello all. My delima is I have apparently confused myself and while taking psig readings from a...
259
jacqueschaurette@...
Feb 20, 2012 9:13 pm
Hello p3llctech, it`s a rather catchy name. You must convert the pressure you have at the pump discharge to feet of water, measure how many feet of water you...
260
vic
dragon_vic
Feb 22, 2012 5:50 am
Dear Mod, Thank you for have a nice web, provide pump's knowledge. It's legal if i am looking for a pump in this group? thank you atm, i am working as sales...
261
zefmvieira
Mar 6, 2012 8:01 pm
Hello. I am modeling an hydraulic system and i would like to know how can i experimentally determine the system curve of a hydraulic system? If i have a system...
262
Jacques
jchaurette
Mar 7, 2012 1:41 pm
Hi zefmvieira (catchy name), you can plot the system curve by measuring the flow and the total head. The total head is usually measured by using a pressure...
263
zefmvieira
Mar 7, 2012 4:02 pm
The datasheet of my pump doens't have any information about the performance curve. How can i obtain the performance curves? Is there an analitical way, or can...
264
Rakanandhan
rakanandhan1979
Mar 8, 2012 3:07 am
Hi to all, I am Kumar. I have some confusion abt select the pumps for variable head. The head can vary from 50mlc to 120 mlc. I need to provide the cooing for...
265
dragon_vic@...
dragon_vic
Mar 8, 2012 3:30 am
Hi my name is victor, In my point of view, there's a positive displacement pump, HYDRACELL. It's a good pump, seems like suitable for ur application. Thanks ...
267
Anandh Kumar
rakanandhan1979
Mar 10, 2012 6:52 am
Thx for ur valuable reply. The head can vary from 55m to 120m. I need to propose for cooling the top drive. So can I propose heat exchanger also. And then can...
268
dragon_vic@...
dragon_vic
Mar 10, 2012 7:08 am
If ur application are 5.5 bar up to 12 bar it's easy for Hydracell. Just let me know the capacity requirement maybe I can help u. Also inform the liquid and...
269
Rakanandhan
rakanandhan1979
Mar 10, 2012 10:19 am
Thanks for ur prompt reply. Capacity= 380 lt/min Medium= sea water Sent from my iPhone ... Thanks for ur prompt reply. Capacity= 380 lt/min Medium= sea water...
270
Rakanandhan
rakanandhan1979
Mar 12, 2012 2:33 am
Hi to all, I know it is school question. But lot of confusion it create. How can we classify centrifugal and positive displacement pump based on the flow and...
271
S. L. Abhyankar
sl_abh
Mar 12, 2012 4:33 am
To ze.fmvieira@... When you a run a pump in a system experimentally, with discharge valve fully open, the operating point is a point both on the system...
272
S. L. Abhyankar
sl_abh
Mar 12, 2012 5:04 am
Dear Mr. Rakanandan, I guess that the top drive is the drive end of a reciprocating device, maybe, the drilling rod on an off-shore oil rig. Positive...
273
dragon_vic@...
dragon_vic
Mar 12, 2012 5:20 am
I agree with mr.SLA. Nice explanation mr.SLA. Agree, PD limited at capacity. Example: hydracell PD pump limited 8 m3/h. Best regards, Victor Dragono ... From:...
274
dragon_vic@...
dragon_vic
Mar 12, 2012 6:29 am
Just for sharing my experiences, that Piston or Plunger pump are not suitable for Sea Water application. Piston Pump have limited particle allowance, salt and...
275
glost16
Mar 18, 2012 8:52 pm
Hello! I am a student and I really need to find drawings and specification to a submerged pump of ACD, model TC-34 or some other submerged pump which is like...
276
Serhat kolbasý
skolbas
Mar 18, 2012 9:31 pm
 Hello mate,  I can send you couple drawings about pumps but not submerged. If you want to ? ________________________________ From: glost16...
