Hey if the compressor used is a 220v 50hz model how does it plug into 115v 60hz wall outlet?? is there a converter inside??
I ask becasue looking over danfoss's data sheets I dont see a 115v unit the same as this one.
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Hey if the compressor used is a 220v 50hz model how does it plug into 115v 60hz wall outlet?? is there a converter inside??
I ask becasue looking over danfoss's data sheets I dont see a 115v unit the same as this one.
well all i can say is there are no 115 v models as of yet..i have it from someone at asetek that there will be one soon.as soon as there is one available there will be one shipped direct to baker.Quote:
Originally posted by paul007
Hey if the compressor used is a 220v 50hz model how does it plug into 115v 60hz wall outlet?? is there a converter inside??
I ask becasue looking over danfoss's data sheets I dont see a 115v unit the same as this one.
i would guess over the next couple of weeks there will be one avalable.
wijdeveld,
You address inner surface area, but what do you use for external surface area of your cold plate on your heat loader? What surface area is your heat removal wattage based on? Is the contact area based on the size of the die of a certain type processor?(die simulator) Or are you using the entire surface area of a cold plate of say...2 inches square? What I'm trying to ask is what contact surface area, where the actual heat tranferance takes place is being used and is it consistant in all of your tests? Thanks
If the following chart is to be trusted (I'm waiting for Bowman's tests), then there is not only an improvement in evap temps over the prommie, but a very substantial advantage in heat transfer between the evap and the CPU (better block design).
I wonder what sort of firestorm will result if/when nVentiv switches to a similar design.
http://www.asetek.com/filarkiv/Produ...erformance.gif
I NEVER trust charts from a company's own testing .... no offense to asetek this time but I ONLY listen to third party testings.
I agree. Whatsmore Bowman goes to great lengths to ensure that his load simulations represent actual conditions. I would consider his results to be meticulously honest, accurate, and impartial.Quote:
I NEVER trust charts from a company's own testing .... no offense to asetek this time but I ONLY listen to third party testings.
I couldn't agree with you more on this one, Gary. All his testing is meticuluous and no one takes more time or is more careful with how he builds his systems or tests them. Ask Dale, Hobocrow and a host of others and all of us will agree.Quote:
Whats more Bowman goes to great lengths to ensure that his load simulations represent actual conditions. I would consider his results to be meticulously honest, accurate, and impartial.
Hi TheDude,Quote:
Originally posted by TheDude
wijdeveld,
You address inner surface area, but what do you use for external surface area of your cold plate on your heat loader? What surface area is your heat removal wattage based on? Is the contact area based on the size of the die of a certain type processor?(die simulator) Or are you using the entire surface area of a cold plate of say...2 inches square? What I'm trying to ask is what contact surface area, where the actual heat tranferance takes place is being used and is it consistant in all of your tests? Thanks
The phase change model is more like a 2-D cross-section through the die, so the contact area is the same as inner surface area. I now this isn't perfect (wasn't supposed to be), therefore the later models take the Intel die size into consideration. It's described in the report and on the Vapochill forum :)
The phase change model was developed to test the influence of different cold plate materials, thickness, presence or absence of TIM and R404a filling versus R134a (and flow rate, but only roughly to have en educated guess on the influence of the vapor pressure). All models can be refined (see the Waterchill results) but at that time there wasn't a design problem (just a R404a refill to consider ;) ).
I've always wanted to do a detail study on the capillary pressure drop and the influence of the different gases in the R404a mix on the capillary overload point. Maybe you can give me a pointer if such a model has been developed (I'm sure it is) and which algoritms (formulas) are included.
But you can run 220v 50hz models at home right in the USA? You just have to have an electrican come and install a 220/240v outlet in that room or bench in side the landrey room. :)Quote:
well all i can say is there are no 115 v models as of yet..i have it from someone at asetek that there will be one soon.as soon as there is one available there will be one shipped direct to baker.
i would guess over the next couple of weeks there will be one avalable.
Quite off topic, but what's the problem with 220 Volt?
I just had a subwoofer delivered here in Holland from the States (Von Schweikert VRS-1) and apart from mounting a different power connector it was just flipping a switch on the build in amplifier????
Do these units have a similar switch to PSUs, ie 115/240V (you know that one that makes a big bang and some pretty sparks if you set it wrong ;) :p: )?
Wouldnt this arrangement allow them to work in both the US and UK (and other places of course), and also make the production line simpler?
G
Quote:
Hey Phyrox, did you happen to talk to Greer? He's a freakin' trip.
greer rox :D best service i ever got , kit tronic is a good site too, willing to go the extra mile
You can't just install a switch to let a unit run at 115V / 230V.
On Powersupplies it is easy: Most transformers have two secondary coils. With the 115V/130V switch you just connect these coil parallel (115V) or in series (230V) so you'll always have the same secondary voltage and you can always draw the same current.
The frequency is also no problem because in most cases the voltage will be rectified.
But a compressors is driven by a electric motor wich consits of some coils only made for one single voltage. And also the frequency (50Hz/60Hz) would be a problem and result into different speeds.
OT:
I think that one would the best subwoofer for my music cuz It seems to be very quick, isn't it? That's what I need to hear clear high-speed death metal drumming :D.Quote:
I just had a subwoofer delivered here in Holland from the States (Von Schweikert VRS-1) and apart from mounting a different power connector it was just flipping a switch on the build in amplifier????
Thanks that would explain the variation beyond the norm in the temperature reagon of -20 to -40 It looks as though the data are squed here and slightly beyond the standard deviation I would have expected to also have been carried to the rest of the curve. I would have expected the curve to conform to a more linear function and not deviate in its function much from that of the other coolers based on simmilar materials.Quote:
Originally posted by wijdeveld
Hi chilly1,
I've listed the model assumptions at the end of the article (chapter 6). Basically, I've translated the heat production of the die to a chemical system component (named 'heat') which travels as a conservative tracer through a soil system (the copper core) toward a liquid (being the real world vapor). I've translated the evaporation energy to a colder initial injection temperature and the heat capacity of the vapor was used instead of that of a liquid. By variation of the porosity of the 'solid' phase based on the heat capacity of copper, aluminum and silver, the different heat transport capacities for these metals were taken into account.
Much was done on assumption and calibration based on my Vapochill PE measurements since the model I used is developed for chemical pollutant transport in groundwater. It served it's purpose for evaluating differences in temperature in the CPU die with different cold plate materials, but it is limited with regard to incorporating capillary effects and reaction kinetics for evaporation (normally the model is run for 10.000 years, now for 10 seconds ;) )
Afterwards, the model has been applied with much more detail to the Waterchill block, for which it is much more suited.
So is anyone else planning on buying one? Im going to get mine from kit-tronics for $880 shipped on monday unless someone can convince me not to :)
Not sure if I should really jump on this yet. Can always get a r404a modded mach1 but ot sure hows its going to perform against this. besides i wouldnt like to cover my cpu all over with that nasty hcc compund
how many guys bought this and how many are planning to?
if there really a point if i can get a r507/404a502 modded mach1 or just a mach2. mk1 modded will be $180 less and i already have a mk2 which i can sell in 1min i already got a buyer.
sorry for crapping thread up but plz tel l me what i should do. i cant go for nventivs new product because it will be VERY expensive. thx guys :)
Additionally are we being fair in the comparison of a R404A model to a R134A model. What happens if we take for instance a R404A model of the MachII and compare it to the LS?
nVentiv doesn't have a R404A/R507 model, so in order to be fair, we would have to compare it to a modded prommie.Quote:
Additionally are we being fair in the comparison of a R404A model to a R134A model. What happens if we take for instance a R404A model of the MachII and compare it to the LS?
Then to be fair, we would also need to add in the price of modding for price comparison, and also the fact that the modded prommie is warranty void, which as herefishy points out has a cost.
But yes, strictly for an evap performance comparison, we would need to have the same refrigerants, amongst other controlled variables.
so should i get the ls then?
i would wait for cebit its only 1/2 month away, u dont wnat to buy an ls and nventiv comes out w/ something even better in 1/2 month....u'll hate ur self i know i would, think about somethign else for 2 weeks :D
i know what nventiv is releasing andi cant afford it
On one hand I'm glad Asetek has stepped up and put something that appears to be worthy into the ring of competition. This is good for the consumer.
On the other hand, it is painfully obvious that Asetek did not try too hard to distinguish its own design at all. It appears that they plan on capitalizing in Nventive's success with the product's visuals. To say "there is no other way to do it" is bulldroppings. It was the simple way is all.
I am hopeful the new vapo will kick some arse. I just wish something a bit more "revolutionary", or even "evolutionary", was released. And with prices not looking to be that low, it looks more like a ho hum knock off than anything else.
BTW, even the name is too damn similar:
Mach II
Light Speed
Naaa...I gues not:rolleyes:
Phyrox,
Why don't you just regas your MachII with 404?
As I see it, they have both copied LianLi's design. If LianLi doesn't mind, which I suspect they don't, then why should I?
Why do you know what nVentiv is releasing?Quote:
i know what nventiv is releasing andi cant afford it
When will we know more? After CeBit?
yeah what is nventiv realeasing, i wnat to know :D