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Recent content by Btutiful

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    Process Chill Water Loop for Multiple Machines with varying requirement.

    Although I think a booster pump could be made to work, if your existing pump(s) have the head capacity for the added machines, then you could just add a balancing valve to the return side of both machine 1 and machine 2 upstream of the "Return Line Shut-off Valve" . The balancing valves can be...
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    Multiple cooling Tower equalization issue

    A diagram would be helpful. Is the equalizer line sized large enough? Depending on how the system is setup, I could see that being a possible issue.
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    Chilled Water Constant Flow Reverse-Return Bypass

    I will verify flow and head requirements at both states of the system, thanks SAK9! The system will continue to provide flow to each drop regardless of the state of the chillers, so it sounds like I should be good without a bypass. Thanks all!
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    Chilled Water Constant Flow Reverse-Return Bypass

    Oh, I see. My misunderstanding. There will be two sets of pumps as you say. The pumps on the P&ID are for the closed loop and the drain. I will make this more clear on the final version of the P&ID. Thanks LittleInch. I appreciate the clarification and your input.
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    HAP DOES

    As 3DDave has pointed out, I think there might be some confusion of the concept of a DOAS system. DOAS usually implies 100% fresh air, which in turn implies that much air being replaced or exhausted. The only possible exception that one could argue to exist would be if the DOAS provided fresh...
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    Chilled Water Constant Flow Reverse-Return Bypass

    Thanks goutam, I will look into the cost differences. That's a valid point SAK9. One thing I should clear up, though, is that flow through the chillers is planned to be constant. The only variability will be when they add the additional chillers to the blank drops that will be provided as part...
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    Chilled Water Constant Flow Reverse-Return Bypass

    That's a good point on the towers, thanks! The customer has water treatment staff that is determining their water condition and how they want to treat it, so I don't have anything solid down yet for that part of the design. I will definitely present that method to them. They have their preferred...
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    Chilled Water Constant Flow Reverse-Return Bypass

    Yes, there will be auto balancing valves on the return side of each drop. Yes, there was a typo, but it was for the 34.9 GPM. It should be 24.9 GPM initial load and 16.9 GPM future load, totaling to 41.8 GPM. And yes, that helps a lot. Thanks! Attached is the curve of the pump I had planned to...
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    Chilled Water Constant Flow Reverse-Return Bypass

    Thanks for taking a look at this guys! Attached is a rough draft of the P&ID that shows existing and future loads. Any criticism for this would be appreciated as well. This is a critical system for the customer, so it is setup for duty/standby as requested by the customer. I don't have the...
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    Chilled Water Constant Flow Reverse-Return Bypass

    Hey all, I'm working on my first Cooling Tower Chilled Water system, and I was hoping to get some input on some solutions I've come up with for a reverse-return bypass. (Everything is pretty much self-taught since undergrad days and I don't have access to a mentor to get their opinion.) The...
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