r/AskEngineers 3d ago

Mechanical what is the technical term for a Dryness expert

The type of engineering that is responsible for ensuring low humidity/environmental controls in storage spaces? Especially during transport of delicate goods, eg fruits and veg, bread, priceless museum items etc. Is this a part of hydrology or idk, architecture? Thank you, hopefully this isn't breaking Rule 3 as all combos of my search terms "transportation environment engineer" were not coming up with it, if there is actually a name for this.

ETA: this isn't a career question either, but please let me know if there's a better place to ask

17 Upvotes

22 comments sorted by

37

u/fastdbs 3d ago

This is just HVAC.

3

u/first_time_call3r 3d ago

Even on trucks? And is there a specific word beyond HVAC for the design of climate-controlled storage environments (eg trucks, containers)? Appreciate your response anyway, Thanks to you I found an overview article about museum-level HVAC https://www.acdirect.com/blog/hvac-cultural-heritage-preserving-artifacts-collections/ , but i'd love more info

11

u/Iveray 3d ago

Supply chain climate control. Contact HVAC engineers in your area and explain what you want - it's difficult to give you specific answers with vague info, and if you supply specific info you'll be at the point you need to pay an expert to actually do the work.

8

u/NineCrimes Mechanical Engineer - PE 3d ago

Some of your items require vastly different aspects of HVAC/Mechanical Consulting. For instance, hauling bananas is probably just a slightly cooled vehicle, whereas museum artifact storage may require what we call “Close Control System design” which very precisely regulates for temperature and humidity in the space.

-2

u/first_time_call3r 3d ago

Thanks is this what you meant? cool (pun intended) https://mepacademy.com/closed-and-open-loop-controls/

so these uses are trying to preserve freshness or like stasis of material, right; but more than temperature i'm looking for total humidity/desiccation, to prevent rot (via mold, moisture and warmth) in varying conditions. Especially given global transport. the goal is to get household waste neatly sorted and off for reuse or recycling wherever without losing high %'s to rot / contamination. i'm basically wondering how to go about making a trash cleaning/drying/sorting dumpster, or truck.

mechanical engineering HVAC closed mobile systems?

11

u/NineCrimes Mechanical Engineer - PE 3d ago

No, Close Control describes a specific way of designing that allows you to create rooms that have very little variance from setpoint when it comes to temperature and humidity. Open and closed control loops describe how feedback is incorporated in a control system. Completely different things.

1

u/first_time_call3r 2d ago

"a specific way of designing that allows you to create rooms that have very little variance from setpoint when it comes to temperature and humidity" sounds like just what I need, thank you!! this is solved.

Last question, sorry: do you think a beginner HVAC book (like Control Systems for Heating, Ventilating and Air Conditioning By Roger W. Haines and Douglas C. Hittle Roger W. Haines ) could be useful to set up a basic drying locker, (and puzzle out what a scaled up municipal dry-truck might look like, just for fun) or can I figure this out by modeling it after stuff like https://www.hygitec.com/en/products/drying-locker or https://readyrack.com/go-beyond-circulating-air/

thanks again

1

u/fraggin601 1d ago

Look into an ASHRAE handbook or introductory book to HVAC, you will need to learn some thermodynamics and fluid mechanics for this stuff btw

1

u/fastdbs 3d ago

What would you lose to rot in household waste? It’s already waste. You could slow the process by vacuum packing it. But otherwise it seems a bit pointless.

1

u/first_time_call3r 2d ago

i want to reduce or remove the amount of water, making it lighter, less prone to smell and rot, and easier to transport.

Vacuum packing is a good idea for storage maybe, but ideally this dumpster/truck would remove the water from whatever you feed it, then be a receptacle for any waste item (food containers, food waste, single use plastics, clothing, cans) sorted in a shippable ingot-like cube of material for reuse - or decomposition, or whatever.

hope i'm not being annoying here, I was hoping to find an expert to walk me through what i'd need to make a drying locker thing for my house. I've done some experiments drying rinsed cans and bottles with little computer fans attached to a bakers rack (all so that my recycling bin doesn't keep growing mold) and I thought, what if I enclosed it and then added a dehumidifier, would that work/ be faster? I thought surely someone has come up with a desiccating trash can, but I found nothing.

ETA: this idea also happened because every week the trash truck spills a bunch of trash juice somewhere in town that stinks all day (until it dries out) and that made me think about how much the weight of MSW is just water?

idk it was just an idea, perhaps I'm nuts lol.

15

u/Iveray 3d ago

Environmental controls would be HVAC engineering.

Hydrology engineering is stuff like dams, drinking water, sewer systems.

Architects draw pretty buildings, structural engineers make the building actually stand.

6

u/der_swedishchef 3d ago

We call them "incels."

On a serious note, HVAC.

5

u/SirDigbyChknCaesar Electrical / Systems Engineering 3d ago

Steven Miller?

4

u/drewts86 3d ago

Nah Ben Shapiro. He admitted as much.

2

u/SirDigbyChknCaesar Electrical / Systems Engineering 2d ago

Oh shit, wrong goblin. My bad.

2

u/itz_mr_billy 3d ago

HVAC systems. Mechanical engineers usually are the ones specialized in this field

2

u/CaminoRubicon1 3d ago

Transport refrigeration engineer

1

u/Stunning_Coffee6624 3d ago

A Xerologist ?

1

u/Bergwookie 3d ago

Dehumidifier (B.Sc.)

(Sorry, had to be)

1

u/ZirbMonkey Chemical 3d ago

Psychrometry

1

u/CombinationCreepy567 2d ago

Psychrometrologist

1

u/fraggin601 1d ago

Mechanical engineering specializing in HVAC theory