Recent content by Satonam

I agree, I wasn't sure how to explain the question and it branched out as I wrote it. Regardless, thank you for humoring me. Given the lack of scientific research available, I agree, this topic can only really be explored on a philosophical frame. When you say the facts are "recorded" do you...

Wasn't sure where to drop this thread, so here it is! I've searched the internet and this forum, perhaps I don't have the correct keywords, but I haven't been able to find anything that discusses this topic. I'm interested to know about your individual experience of learning. I'd like to think...

Sorry, I wasn't clear. T1 = -1.25C is the temperature of R134a saturated vapor at the compressor inlet. Which was determined after arbitrarily choosing an inlet pressure of P1 = 0.28MPa. TL = 10C is the target temperature of the refrigerated room, it's the temperature of the medium where heat...

Thanks for your response! Very informative. My approach was to design a working model and then source components to fit the roles. For example, if my calculations required a 1.2 HP compressor, then I would find an adequate compressor and adjust my calculations based on what is readily available...

For R134a as a saturated mixture going through the evaporator at 45 F, the pressure is 54.787 psia. For R134a as a saturated mixture going through the condenser at 130 F, the pressure is 213.53 psia. Well, I chose the compressor arbitrarily. It's not based on any qualifying metrics. I'm just...

Are you saying I should infer the pressure from the saturation tables? I still don't understand why it's listed as a spec on their page. It is my understanding that the engineer determines what the evaporating and condensing temperatures should be and selects the compressor that can pressurize...

Greetings! I'm a recent ME grad and I'm trying to design a refrigeration system for the first time. I understand most of the theory and calculations (I guess not, cause I wouldn't be here otherwise), but I'm having difficulty applying it to the real world. Homework problems in college often...

So, if I performed this static analysis properly, the moments at the supports Ma = Mb = 0 and the horizontal reactions Ax = Bx = 0. However, this is not useful to me in determining the value of forces acting on the brackets (which would form the foundation joints and all other joints. However...

Hello again, I wasn't sure whether I should post this here or start a new thread although they are somewhat related. I want to analyze a similar frame from a two-dimensional point of view. Recalling what I remember from Statics, I started by treating the following structure as a truss. (They...

In that case, using the maximum deflection formula for a simply supported beam and a young's modulus of 29000 ksi, I'm coming up with a max deflection of 0.22" How do you know if the deflection is too large or small enough? If my simplifications increase the FS, isn't that a bad thing? Doesn't...

It seems your link is no longer available. I'm curious to understand how to design the thickness of a plate with a perpendicular load. Here's what I have so far: In reality, the plate is welded at x = 0 and x = 25". A 570-lb pump is placed in the shaded area. I want to make sure the plate can...

Thanks! Those are very good points. I mislabeled the stress due to the vertical load as "direct stress" when it's actually a shear stress, which can't be added directly to the stress due to bending since it's an axial stress. True, I actually don't expect the plate to support 125 lbs, I just...

This is what I wanted to know. I know the value, according to those tables. What I'm not certain is how to apply them considering that the connection between the wall and the beam is treated as a point with reaction forces and moments. But, in the given case, if we zoom into that "point", it...

Hello, The resource I'm using is "Design of Machine Elements" by Spotts and, although they have examples of tensile and torsional stress, they don't show any examples with a load which causes a moment. What we have here is web of 3/16" thickness and 1.85" depth welded onto a rigid body from...

I'm getting a very different deflection, so I guess this method isn't reliable either... Real life is very different to academics it seems. Heh.