We have two pumps at 50% each, 800 GPM each, parallel pumping arrangement.
A water balancing comes out like this:
each pump, when tested alone delivers 1100 GPM.
When both pumps are enabled with everything open, they only deliver 1350 GPM.
One would expect 1600 minimum, better yet, 2200 since...
Hello all.
I posted this thread in the "pump emgineering forum" and was advised to post here instead. I thought folks visiting pumping forums wre better qualified, but seems like I am speaking chinese to some (biginch). Hoping to get some debate here instead.
I have seen several arrangements in...
High all,
I could not afford to go to the ASHRAE show on net zero in san Francisco this past month.
Can anyone volunteer information on the show if possible?
How do we HVAC engineers contribute to net zero buildings? We can reduce energy, but what are the big features of a net zero building...
Hello Middle East expats
We hear of the Middle East El Dorado, what are the labor rates one can command for professionals? I see offers of job postings of 130,000 British pounds per year for senior staff (before the fall of the pound)
Can anyone give an indication of Middle east salaries in...
Hello all.
I have seen several arrangements in primary/secondary pumping systems.
Some utilize a suction from the primary and return to the primary with no devices of any kind.
Others use a bridge with a control valve.
Others use a 3-way valve.
I have used successfully primary/secondary pumping...
Hello wind experts
We have been asked by a client to perform a special task consisting of gathering a team of experts in the field of wind energy to install a 300 MW wind farm.
The client does not want to deal with large manufcaturers directly (at least for now). He wants them to report to us...
Hello all,
We are setting out for the Big5 show in Dubai next month. We are a US based MEP firm hoping for some contacts for work in the UAE. We keep hearing of more bigger and bigger projects in the plans.
Any experiences you can share working in that country (UAE)? Legal, Banking, fees...
Hello all,
Does anyone know of a quick method or any reliable software to download to perform pipe heat tracing calculations.
Applications are as follows:
Condenser water pipes - 8" pipe with 2.5 cellular glass insulation.
Cooling tower make-up water - 2" pipe with 2" cellular glass insulation...
I wonder, how much energy savings over ASHRAE 90.1 you guys are getting for office buildings in mderate climates?
In very cold climates we've been able to document as much as 58%.
Are you down sizing your chiller and boiler plants as a result of LEED? Do you remove some conservatism from your...
Has it come to your attention that we MEP Engineers are the slaves of the construction industry?
The ones with the least power.
Take an example, one cannot built a home without a structural engineer stamp. One cannot built a house without an architect or without a civil engineer stamp.
Yet, any...
