Good afternoon all,
I have searched the web trying to find a shower exhaust fan with a built-in heater (infrared)in it. I am looking to exhaust approximately 100 CFM at 0.5" W.C. The typical fans I have come across on the web cannot work with such static pressure. To you knowledge is there...
Point well taken Waramanga. Do you have a suggestion as to what type of mini BAS to go with? And is 15K really all that would be required? My boss seemed to think more than that around 30k...
Thanks for the input
I am designing a approx. 20000 sq. ft. building that will be served by 8 roof top units (RTUs) in ASHRAE climate Zone 6. The RTUs have not been selected yet.
Let us look at one RTU. This typical roof top unit might serve 4 closed offices, and 2 boardrooms.
In the shoulder seasons (Spring...
Hi,
I am designing a new 20 000 sq. ft single storey building with different roof slopes and an inner courtyard. We are going to use multiple roof-top units. Nothing too complicated from a load calc. point of view. For this reason, I want to use this project to use HAP for the first time.
I...
Thank you all for the responses. From reading all these links it seems it's a matter of knowing the basics before making a judgement call on what is an acceptable/good piping/pump arrangement for a given situation.
As for suction guides (flow straighteners or suction diffusers), it does not...
Hi,
I am currently working on my first chilled water plant design. For the condenser water circuit we are intending to use base-mounted centrifugal pumps. We are considering using suction guide on our pumps. I know that a centrifugal pump needs approx. 5 diameters of piping before pump inlet...
Hi,
I would like to know what is the threshold value at which the service and emergency generators typically have a pre-lube pumps.
By the way, I am typically involved with land-based units under 60 kW. We do not have such pre-lube pumps.
Thank you
Hi,
We have asked to have some pins fabricated using AISI 1018 steel. The machine shop is asking us if they can use AISI 1022 instead. I know the mechanical properties are actually better but more brittle due to slightly higher carbon content. But is there a chance of galvanic corrosion if...
ECSTSRegs,
Thank you for shedding some light on those regulations. Sorry for not responding earlier.
Just to clarify our project: We our preparing to replace the piping because the building housing the Power Generator was relocated.
While it is true that other options exists in very few...
Hi,
There seems to be many methods of continuously monitoring an aboveground double-wall tanks for leaks. We were thinking of using a Veeder-Root TLS 350 for both piping and the tanks.
These are a couple of 10 000 liters tanks feeding a power generator that is running continuously.
The...
Hi,
I was asked to research Codes, Regulations and Guidelines that are dealing with Flight Deck and Helicopter Hangar Fire Protection requirements. We have an old Transport Canada standard and there is also a IMO Resolution A.855 (20). But there is very little direction provided by these...
Hi,
So far, all the studies looking at the emissions improvements of biodiesel over petrodiesel seem to be skewed in that they do not consider the potential need to re-tune engine timing to account for different cetane number of these respective fuels.
Have the members of this Community ever...
MJCronin,
Sorry for not responding sooner. I am looking at the link you provided and cannot see why this would not be suitable. I am looking at the Double-Pipe Series. Now just need to understand how joints are made and elbows integrated to this system. I also will have to check some...
I should probably point out that the Regulations leave the option of using single wall piping granted that a monthly visual inspection and inventory reconcialiation is carried. Now for our sites, this is just not an option has these sites are unmanned. hence the need for double wall piping.
I...
Hi,
I work for the Canadian Government. Recently the Storage Tank Systems for Petroleum Products and Allied Petroleum Products Regulations were enacted. One of the requirements is to have a secondary containment system for both the tank and piping. While for the tank part it is easy, it is...
