Nespresso power consunption

[bitslice]

I wonder what kind of battery (and inverter...) you plan to use. It's gonna be 3x as big as the machine, cost 4 times as much, and maybe let you make a cup or 2 before being empty....

I imagine the Americans solved the problem of making fresh coffee in space before they'd even built a rocket.

http://www.nasa.gov/mission_pages/station/research/experiments/1769.html

Priorities man, priorities

 O0

[Ian.M]

That inverter is only specced to work down to 21V.  On a 6S LiPO pack that's 3.5V per cell so only about 2/3 the nominal capacity.  That means you only have about 1MJ theoretically available, or 3.3l of water heated 75 deg C. Best case, you'll probably have 10% losses each in the battery, inverter and Nespresso, so you'll be lucky to see over 2.4L brewed.  It could be as little as half that, i.e 10 longo or 40 espresso.

Caution: At most exhibitions, exhibitors cannot offer anything except pre-packaged, non-perishable food/drink to the general public without a food hygiene assessment.  Check the venue's regulations carefully *BEFORE* dispensing beverages.

[Kjelt]

Where did the post below go to? It dissapeared? Is the forum corrupt or did some admin remove it? 

I looked into this four years ago, I wanted a (mobile) Nespresso in the car.
Biggest problem was for the aprox. 1000W you need the 12V->230V DC-AC converter is pretty costly and the battery should provide 83 amps 
Scrapped the project and realised this is probably the reason there are no cars with an nespresso machine built in 

I work for a company who builds the electronics for coffee machines and I know for a fact that we don't use the 230VAC anywhere. We use 24VDC for the high power stuff such as heaters and motors.
So you would be fine if you can buy a 12V->24V converter and then you would ony have to open the Nespresso machine and find output of the PSU. (Of course you would do it the other way around, first you search the output of the PSU and meassure it and then you buy a converter with the same voltage).

If you are interested, we build the electronics for Eversys (https://www.eversys.com/) and they assemble the machines.


Edit:
I also cannot believe that the Nespresso uses 1kW. If I am not misstaken the small Eversys e'2 machine needs 200W. I will look it up tomorrow.

[ericloewe]

Where did the post below go to? It dissapeared? Is the forum corrupt or did some admin remove it? 

I looked into this four years ago, I wanted a (mobile) Nespresso in the car.
Biggest problem was for the aprox. 1000W you need the 12V->230V DC-AC converter is pretty costly and the battery should provide 83 amps 
Scrapped the project and realised this is probably the reason there are no cars with an nespresso machine built in 

I work for a company who builds the electronics for coffee machines and I know for a fact that we don't use the 230VAC anywhere. We use 24VDC for the high power stuff such as heaters and motors.
So you would be fine if you can buy a 12V->24V converter and then you would ony have to open the Nespresso machine and find output of the PSU. (Of course you would do it the other way around, first you search the output of the PSU and meassure it and then you buy a converter with the same voltage).

If you are interested, we build the electronics for Eversys (https://www.eversys.com/) and they assemble the machines.


Edit:
I also cannot believe that the Nespresso uses 1kW. If I am not misstaken the small Eversys e'2 machine needs 200W. I will look it up tomorrow.

Sounds dubious, either way. Why the hell would Nestlé outsource the machines to Krups and DeLonghi only for them outsource them again to Eversys?

[metRo_]

OK, so you just need a quick&dirty solution.  That inverter will *probably* cope if the Nespresso transformerless power supply survives its modified 'sine' output waveform (which is far from certain)   Due to the high 3rd harmonic content of a modified 'sine' wave, it may blow the shunt regulator in a capacitive dropper PSU.

However, unless I owned a 24V truck and also needed the LiPO pack for another use,  for a 1-off event, I'd simply get a 12V pure sine inverter with an adequate rating and use it off the starting battery borrowed from my vehicle.  If its in good condition and you don't use more than 20% of the nominal capacity, you shouldn't have any problems starting the vehicle afterwards, and if you drive for at least 1/2H it should be close to fully recharged.  Figure on about 10AH at 12V for a litre of brew.

Do you think the chances of damage the machine are high?

I never say I will use it on a truck. I need it to be "portable".

I choose a 24V inverter trying to get a little more efficiency. I didn't find a pure sine inverter from a local store here in Portugal with proper power rating.  I'll appreciate if someone could advice an European store with good prices that could ship it quickly. 

[metRo_]

I bought the inverter: 12V 1200W. With a lead-acid battery of 12V @ 33Ah I was able to brew 30 expressos and the battery still have some joice for more 

[Ian.M]

Great.  The only disadvantage of a lead acid battery is it needs to be charged as soon as possible after use, and regularly recharged when in long term storage.  OTOH its a far cheaper way of buying V*AH than a high capacity LiPO pack.   If you leave it heavily discharged it can die in as little as 24H in hot weather, so don't do that, and preferably don't use more than 2/3 its nominal capacity.

[Philfreeze]

The Heater and the motor of the Nespresso Essenza are 230V in Europe. The Logic board, uses a PIC micro, with a transformless power suply.

Yeah I realised it 2min after I wrote my post (this is wh I deleted it, it was missleading).
I remembered that we have a Nespresso machine lying around. As soon as I looked atthe striped down machine I knew that I just wrote crap xD

Still, I don't you actually need 1kW. It will just take longer to heat up but that isn't really a problem (I assume).