cybrguy
Putin is a War Criminal
Probably not for anyone other than you, Princess. But, we ack that you ARE a special case. That's why we love you... That and Bandit, of course.
Dynavap VapCap
- Thread starter Fenton Mewley
- Start date
kushkush
happy camper....
Probably not for anyone other than you, Princess. But, we ack that you ARE a special case. That's why we love you... That and Bandit, of course.
I love bandit.
Princess, kinda sortajk
I know that you guys love me utterly. And you’re all jealous you can’t have a Princess too! So you have to settle for my dog. Well...he’s pretty darned lovable that’s for sure!
MinnBobber
Well-Known Member
..............................................................................................." VapCap Repair & Service Kit -for a lifetime ! "
That should serve as repair and service kit for all of Greece for the next 20 years
You are covered for an eternity , that's one hell of a stockpile
stark1
Lonesome Planet
I know that you guys love me utterly. And you’re all jealous you can’t have a Princess too! So you have to settle for my dog. Well...he’s pretty darned lovable that’s for sure!
Well. I bet my VapCap is shine~ier than you’re
So, dare
Squiby
Well-Known Member
Finally, a practical use for my old engagement ring.
MinnBobber
Well-Known Member
.........................................................................................................................
How about a custom "Diamond Edition VC" ??
This custom with the ring built into the middle of the middle section:
Smokey McVape
Well-Known Member
I have the same setup and it rocks!Here is the OG Vapcap with the Ti-tip and Omni condenser, its pretty long.
Good explanation!316L stainless steel vs Titanium Grade 2
Thermal conductivity : 16,2 W/m/K vs 16,4 W/m/K
Thermal Capacitance : 0,500 J/gr/K vs 0,523 J/gr/K
Density : 7,99 gr/cc vs 4,51 gr/cc
Source:
http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MTU020
http://www.aksteel.com/pdf/markets_products/stainless/austenitic/316_316l_data_bulletin.pdf
Both the M tip and the Ti tip have almost the same ( really low ! ) thermal conductivity.
So heat is transferred almost in the same manner at both the tips.
As for their capacity to store energy as heat ,actually titanium has almost 5% more heat capacity
than the surgical steel (316L) .
But ...
The surgical steel has almost double density than Titanium grade 2 .
Because the heat capacity depends on the mass ( Joules / grams / Kelvin )
and assuming that both the 316L and Ti tips have the same VOLUME ,then
the Ti tip has almost half the mass of the 316 L tip.Thus the Ti tip has also almost
half the heat capacitance (amount of heat stored ) than the 316L tip has.
In practice that means that -roughly- the Ti tip needs half the energy applied to reach a certain temperature ,than the surgical steel tip needs.
Energy is Power multiplied by Time (duration).
Thus , a Ti tip either needs roughly half the time to reach the click point than the 316L tip needs ,
for the same heat power applied,
or
either a Ti tip needs half power applied to reach the click point than the 316L tip needs ,
for the same time duration of heating.
Same goes for the cooling procedures.
Cheers.
It's all complicated further when the cap is thrown into the works. I'm not really looking for answers but just putting some questions out there that I've mused.
How does the heat go from the cap to the tip? Radiant, Conduction, Convection?
How do these all compare, what ratio are they, do those ratios change dynamically as the cap is heated?
How much contact is there between the cap and tip?
Would the poor conductivity of these metals minimize conduction heating and allow radiant/convective heating to be the main means of thermal energy transfer?
DirtyD
Well-Known Member
The vapcap looks so tiny and simple but don't be fooled, there's a crap ton of science involved with it's magical properties/ abilities. A tiny , precision extractor of hash oil with some surprises up it's skinny sleeve. Be warned, as you draw in the thick yummy vapor you are being drawn in as well. Only because the vC line is amazing. The folks at Dynavap are a TREAT to deal with on any astral plane... I'll only say this once. : The vapcap gets you higher than other vapes. It just does. A bonus from the genius design. Get your ignition dialed in with torch then buy a pipes ih. Tie a strong anchor to this universe and go....
...
...
Not really.The cap is designed to be as minor "obstacle" to heat transfer as possible.
There are few good reasons behind the fact that the cap is so thin and lightweight.
I can't ,of course give an exact answer to any of the above questions ,
but I've a note to add about the last one .
But first things ,first.
As you can notice regarding Conduction -as a method of heat transfer ,
amongst the size variables are :
1 ) The cross sectional area of the medium the heat is conducted through (A).
2 ) The distance the heat is traveling through the material (dx)
For both Convection and Radiation the main variable is SURFACE AREA .
Path of energy
A ) Flame to outer surface of cap : Not much to say here .
B ) Heat travels from outer surface of cap on to the inner surface of cap :
Through material conduction .
The cap has to be really thin (small dx ) in order for the cap to have as low thermal resistance ** as possible. Note here that the cap has also small mass .It has to be able to raise and drop it's temperature really fast . Must store as less heat (energy) as possible.
C ) From inner surface of cap to outer surface of tip ( spiral threaded ) :
No matter which is the main type of heat transfer ,at this case the main variable is surface area at all three cases.Since the surfaces of cap and tip are so close and equal ,
heat is transferred in a very efficient manner ,at any case .
D ) From outer surface of tip into the inner surface of tip: Due to low conductivity of 316L & Ti grade 2 the VapCaps are not so "conduction" vaporizers as they seem to be.Actually they are a very nice balanced "blend" of conduction and convection vaporizer devices.
The cap is almost "neutral" at the whole vaporising procedure.It has to be that way.
The cap should contribute the least into altering the temperature of the tip .
It carries also the "sensor-indicator " devices ,the bimetallic discs ,aka the "clickers" .
If the cap was not neutral it would then affect the linearity of clicker's response with it's stored heat,skewing the indication of temperature range.
The tip does all the job .The "muscle" of a VapCap.
It's mass ,it's material ,it's "threadings" both in the outer in front and inside the inner
towards the condenser ,it's fins ,it's notches ,the chamber size and shape ,
all play their part -small or big- into producing such huge amounts of relatively cool vapor ,
at such constricted space of such small size.
Still the " brains" is the cap.
It's actually the " Human Interface Device " of a VapCap .
Without it operating as supposed ,there's no productive interaction between
the user and the device.User then is "blind" ....Or "deaf" .
(Much) More info :
https://patents.justia.com/patent/20170013877
https://www.google.com/patents/US20170013877
https://patents.justia.com/patent/20140186015
https://www.google.com/patents/US20140186015
Cheers.
**
Rθ cap = dT / Q => Rθ cap = dx / ( k A )
From the equation is obvious that the thicker the cap ,
the larger it's thermal resistance .
dx = 0,1 mm = 0,0001 m
k (assuming cap is made out of 304 stainless steel aka 18/8 aka A2 ) = 16.2 W/m °C
A = ( π * 0,01 m) * 0,015 m =0,00047 m^2
Rθ cap = 0,0001 m / ( 16.2 W/m °C *0,00047 m^2 ) =>
Rθ cap = 0,0131 °C / W
For every Watt of heat applied THe temperature difference between the outer and inner surface of the cap ,drops by 0,0131 °C .
At 1000 Watts ( 1000 Joules/sec ) of power the difference is 13,1°C .
If the outer surface of the cap is say 900°C ,then the inner
would be 887 °C .
But I'm not sure that a jet torch lighter can deliver that kind of power.
The stored energy of liquid (@25°C) butane is ~ 30 MJ / lt or ~ 30 KJ / ml.
https://www.engineeringtoolbox.com/butane-d_1415.html
If the butane combusted is -say - 0,01 ml/sec
( which seems rather rational for a jet lighter gas flow ) then
the heat power is 300 Joules/sec = 300 Watts .
'Nough with the maths ....
Last edited:
pxl_jockey
Just a dude
So many smart people here. So little to add for a person of very little brain...
Yeah,but there is the ol' dawg ,electromagnetism !I just insert (into a IH), and a few moments later
pure bliss no thermo-gawdammics needed
But nice thank you Sailor
So many details there !
For example :Have you tried to put a piece of stainless & ferromagnetic wire
or thin rod,inside the loaded chamber ,right in the center/middle of the load ,
before you put the VC in the induction heater device ?
Oh ,you haven't ?
Induction heating is offering you a way to heat the load " from core to outer " ,ya know .
Not just " from the outer to the core ".
A simple torch lighter can do that .
Physics can reveal quite easily every little secret that is so well hidden right there,
in front of your eyes ,in common view!
Yeap,for both heating the incoming cool air and
for ( the hot air then ) heating the load .
Heat source has to have adequate surface in contact with air to heat it (convection)
and then that heated air has to come in contact with as much load surface as possible (again ,via convection ).
So ,yes Surface area is a keystone for convection.
1) Cool incoming air needs a rather long path (spiral,threads,labyrinth ,etc) ,
which directly translates to increasing heating surface in contact with the air.
2) Both extracting chamber and load have to have adequate surface for the hot air
to extract as efficient as posible. Chamber has to be shallow depth-wise and wide ,
while herb has to be finely ground.
Portability and convective vaporising do not combine easily ,as you can see.
Cheers.
Last edited:
Most probably the filament will start to glow ...Haha have you put a small filament flashlight bulb in an induction heater. what happens?
At least for a while.
Soon ,the oxygen in the atmospheric air will start oxidising the filament,
with the latter being deteriorating quite fast .
kushkush
happy camper....
An ultra efficient VapCap cooler?
Is this a proposal? Well, first....are you a Prince? (requirement)
I prefer a quicker way to cool my VC ...
Last edited:
Whissmu
Well-Known Member
I do not need to cool my vapcap, I am usually able to remove the cap and the ABV before the first click; With a quick turn and helped by the dynastash magnet, my cap out of the vapcap before the click and does not retract hardly any heat so it is possible to take it with my hands without burning ... if you want I show you a video!
accustomed to dealing with hot glass the thin metal of the VC is barely hot for my hands ... but I do not need to do this if there is no rush to get medicated
accustomed to dealing with hot glass the thin metal of the VC is barely hot for my hands ... but I do not need to do this if there is no rush to get medicated