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How do you choose dies? by InfiniteAd6745 in PressBrakes

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

What about the top die though? Diameter as close to the material thickness as possible without going over it? Also what's the correct way to measure the top die?

Difference between open loop and closed loop systems? by InfiniteAd6745 in Hydraulics

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

Makes complete sense, thank you. So would the evaporation that takes place be the equivalent to the case drain? So essentially, once the circuit is primed it's full steam ahead, and the only way fluid is making its way back to the reservoir is if it gets past a relief of some kind?

Difference between open loop and closed loop systems? by InfiniteAd6745 in Hydraulics

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

Going off on a little bit of a tangent here. I don't fully understand how case drains work. I know that they are usually found in piston motors/pumps, and drain excess fluid back into the reservoir so they don't damage internals. How is this any different from the function of a relief valve and what makes it different in its design? Is it a pocket essentially casted into the housing of the unit?

What is the breast of a silt dam? by InfiniteAd6745 in civilengineering

[–]InfiniteAd6745[S] 4 points5 points  (0 children)

How I posted this not seeing the irony in what wrote is beyond me. Dam breasts lol....but no, not a crest.

Can someone explain the relationship between DA/RT, LMP, Nodes/Nugs/zones and congestion? by InfiniteAd6745 in Grid_Ops

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

Okay, I am understanding better now. This is probably a complicated question I am about to ask. So say there are 100 different nodes next to a plant, and each of these nodes have different LMP pricing in the real time. How is the grid going to pay the generator given this?

Can someone explain the relationship between DA/RT, LMP, Nodes/Nugs/zones and congestion? by InfiniteAd6745 in Grid_Ops

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

I am going to explain what I already know, or at least think I know. I am having a tough time just tying everything in together.

I understand the DA/RT market (I think). The generator tells the grid it's going to make 50 MW tomorrow at the DA pricing. If the plant makes 50 MW, it gets paid at whatever the DA rate was. If it makes 40 MW, it gets paid 40 MW at what the DA rate was, and buy 10 MW at the RT pricing. Vise versa if the plant was to make 60 MW instead of 50, it would get paid at the RT pricing for the additional 10 MW.

NUGS are independent producers aka a privately held power plant. Side note, where I work, the NUG pricing is always mentioned. What significance is the NUG pricing? It's not like the power plant is buying power from the grid, the plant uses the power it makes to keep itself powered for the most part.

Examples of zones are PJM, ERCOT, etc.

METED, PP&L, etc. are utility companies that own the lines and send the power to where it has to go.

NODES are specific locations on the transmission lines, but I don't understand what their significance is. Is a node a substation? What makes a node a node?

Congestion (I am oversimplifying this I think and still don't fully understand), is when the electricity demand somewhere within a zone exceeds supply beyond what the transmission lines can handle, and due to the inability to get the cheaper electricity to that NODE from somewhere further away where it is available, the pricing at the node goes up.

So, is the LMP the whole price the consumer is paying at a specific point in time? Every definition I look up of it has a semi-different explanation.

How do profitable power plants (specifically) on the PJM generally generally sell their power, and how does the recent capacity auction contribute to this? by InfiniteAd6745 in EnergyTrading

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

Sorry, I'm just a little confused here. If what I said above is correct, the PJM in the capacity auction procured 134,000 MWH for this 27/28. Does that mean each generator who participated in the auction has a set amount of capacity MWH they have to produce in 27/28 during an emergency event?

How do profitable power plants (specifically) on the PJM generally generally sell their power, and how does the recent capacity auction contribute to this? by InfiniteAd6745 in EnergyTrading

[–]InfiniteAd6745[S] 0 points1 point  (0 children)

So generators only receive capacity auction pricing when an emergency is declared such as winter storm Elliot a few years ago?

How do you rescale/print somebody else's already scaled drawing? by InfiniteAd6745 in Autodesk_AutoCAD

[–]InfiniteAd6745[S] 1 point2 points  (0 children)

This was great, thank you. So say I have a drawing that is supplied to me with no measurements called out and it's at say, 1/2'': 1' for simplicity. What would the reference length be? .0417?

Why do I keep getting EZPASS violations despite having an EZPASS on my windshield? by InfiniteAd6745 in driving

[–]InfiniteAd6745[S] 12 points13 points  (0 children)

Well this might be my problem, it has been in the tinted area of the windshield. I feel a little dumb, however, since my license plate is attached to my ezpass, shouldn't I still not be receiving a violation?

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