Chilled coveralls for attic work!

[LandFish]

I was thinking ice water, bird fountain pump, 18vdc-4ah battery, thermos(es), tubing glued to the inside of a pair or coveralls with a tube and tube heat exchange refrigeration circuit, such as the coo supply water meets the warm return water, keeping temperatures even.
Upgrades include dry ice/alcohol sourced cooling, with alcohol/water refrigerant.
Condensation?
Mylar layer for outdoors?
Let me know what you think, I'm trying it on the cheap. Have half of it already.

[thatguy]

I was thinking ice water, bird fountain pump, 18vdc-4ah battery, thermos(es), tubing glued to the inside of a pair or coveralls with a tube and tube heat exchange refrigeration circuit, such as the coo supply water meets the warm return water, keeping temperatures even.
Upgrades include dry ice/alcohol sourced cooling,...

I feel like alcohol has already been introduced...



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[BBeerme]

Just get a 'mining suit'. Read about them decades ago. High pressure compressed air. Just the change from high pressure to low pressure creates the refrigeration effect, with no change of state. Read about them decades ago.

[thatguy]

Honestly though, I’m having a hard time visualizing what you are describing. Why the tube in tube HX? I’m sure it would make more sense to me if you had a chicken scratch drawing to aid this discription, nothing fancy is necessary, just a scribble with your thoughts.

When they came out with the electric heated jackets the first thought I had was “does it cool also? The counter guy laughed at me and said no, it’s not a heat pump! I was honestly wondering if they used Peltier plates in the jacket. I’m guessing because it’s a major corporation they were just looking for a quick buck in a simple idea and didn’t want to tackle the inefficiency and complaints of low operational run times that would most likely coincide with peltier plates. I haven’t run the numbers to see how long it would work for but it may be something to consider also. Batteries are relatively cheep and I’m sure you can buy the plates in bulk off Mouser for pretty cheep.


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[thatguy]

Just get a 'mining suit'. Read about them decades ago. High pressure compressed air. Just the change from high pressure to low pressure creates the refrigeration effect, with no change of state. Read about them decades ago.

Well that does seem like a pretty cheep option also.

I gotta admit, whenever I go into an attic I always wonder how I can take LESS stuff up there with me, these suits and hoses and bottles seem like a bulky addition... I guess all great ideas start in the design stage then get refined to perfection after prototype has been confirmed successful.


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[thatguy]

Dry ice and thermoses....

I’ve put dry ice into pop bottles before, I would never strap that to my back though

https://youtu.be/nZHGK37jBp8


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[STEVEusaPA]

Send the helper...?

[LandFish]

Dry ice and thermoses....

I’ve put dry ice into pop bottles before, I would never strap that to my back though

https://youtu.be/nZHGK37jBp8


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that thought had first occurred to me so, use a low temp/ alcohol capable pump. sublimate the dry ice in 100% rubbing alcohol (freezing point ~ -30f). All the CO2 is dispersed before hand and only ultra-low temp fluid is left. In turn the tubing size can be smaller.
Think of higher voltage, less weight. More force amperage would be required.
The prototype is a "simpler" version compatible with readily accessible ice machine at work. I figure it could keep a person pretty cool for a our or so with a gallon of ice in a 'cooler backpack.' Plus+ it holds colddrinks .

[BBeerme]

Be a real drag if the CO2 displaced too much oxygen, and you never make it out of an attic.

[pecmsg]

There already on the market.

I wont use them......over 90° send someone else!

[chesehd]

Instead of a thermos why not a Camelbak backpack?

Then again, the extra weight you're carrying may offset the relief you might feel trying to stay cool.

Just a thought and a penny in the pot.

[NCalHVAC]

I personally love when itÂ’s 130+ in an attic

[Jeremiah NC]

I think The Gimp was wearing one in Pulp Fiction :0

[edtheheaterman]

This is a great way to get Alcohol on the job. I like Captain Morgan personally

[Steve_12]

This is a great way to get Alcohol on the job. I like Captain Morgan personally

I did not understand, but what did you write about Captain Morgan?

[JoeyMarquez]

To use a Mylar blanket or sleeping bag properly: squat, then
wrap it around you! This will
minimize the cold you will feel from the ground. While a Mylar
blanket can be good as a ground covering, it has no insulation
on its own, and this could even make you even more cold in an
extreme survival situation.

Also, If you're not SURE you don't need protection from insulation, get a suit. The constant itching and rash for 1-5 days afterward and potentially ruined clothing is way worse than the discomfort and small expenditure upfront.

[pageyjim]

I tried wearing Coolmax t shirts and I thought I was going to die. I wouldn't waste the money or try them.

[ngarry243]

To use a Mylar blanket or sleeping bag properly: squat, then
wrap it around you! This will
minimize the cold you will feel from the ground. While a Mylar
blanket can be good as a ground covering, it has no insulation
on its own, and this could even make you even more cold in an
extreme survival situation.

Also, If you're not SURE you don't need protection from insulation, get a suit. The constant itching and rash for 1-5 days afterward and potentially ruined clothing is way worse than the discomfort and small expenditure upfront.

It seems to me that these are very complex actions.