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Hi

I am looking at purchasing and running a drinks cooling machine to run on no mains electric what so ever!



The company that sells the machine have advised the following

Frequency: 50Hz Rated current: 5.5A Rated input: 800W



This machine is a liquid to liquid based (water and anti freeze bath) heat exchange and only runs when liquid is passing though it. And will only operate when I open the tap and fill a glass up from it so it will not be running most of the time



The two option I am considering is buying a generator inverter and battery and charging the battery up as required. Or just running the generator when it is in operation. So what do you think?



Thanks
 

pc1966

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Looking after a generator is a pain, but presumably you don't have the options for that much power otherwise.

If it is a drinks machine you probably want as little noise as possible, so look for that in any specification as it might pay for a slightly bigger model that has a better silencer, etc.

Leaving generators running on no/light load is not good for them, especially diesel type (search for "wet stacking") so if you have the budget, space and transport (if necessary) then running a generator for short periods at high load to charge a large car/lorry/boat battery and then running your kit off an inverter from that might be better overall, even if the initial cost is a bit higher.
 

Lucien Nunes

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Does this use compressor refrigeration? Your description suggests not, but if it does, allow for a compressor starting load of 3-5 times the running load. This is quite critical especially if it is designed to start against remaining head pressure. With an undersized generator or inverter if the compressor stalls and trips its thermal protection, it might not then be able to restart for a further 5 minutes. Also, if the load on a small generator is mostly from an induction motor, a self-regulating alternator will tend to drop out of voltage regulation due to the low power factor. An inverter generator or one with a proper AVR is beneficial.

Can you post or link to the machine specs?
 

Rockingit

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yes it is
OK, I thought as much. Be aware that for a variety of reasons most event sites expressly forbid 'private' generators and insist that if you need power then it's provided by the event electricians (aka 'hook-up'). So before you spend anything I'd strongly suggest doing your homework on that aspect first. I say this as an experienced events electrician!
 

marconi

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Hi

I am looking at purchasing and running a drinks cooling machine to run on no mains electric what so ever!



The company that sells the machine have advised the following

Frequency: 50Hz Rated current: 5.5A Rated input: 800W



This machine is a liquid to liquid based (water and anti freeze bath) heat exchange and only runs when liquid is passing though it. And will only operate when I open the tap and fill a glass up from it so it will not be running most of the time



The two option I am considering is buying a generator inverter and battery and charging the battery up as required. Or just running the generator when it is in operation. So what do you think?



Thanks
May I ask you to amplify what ‘drinks’ you want to ‘cool’? What form do the drinks have before the need to cool? Could you also say something about a typical day’s business selling these cooled drinks: How many in total? What volumetric quantity is each drink? What rate of sale? How many days per week, per month, per year?

and do want to keep already cool drinks cool or to cool drinks which presale are at ambient temperature?
 
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OK, I thought as much. Be aware that for a variety of reasons most event sites expressly forbid 'private' generators and insist that if you need power then it's provided by the event electricians (aka 'hook-up'). So before you spend anything I'd strongly suggest doing your homework on that aspect first. I say this as an experienced events electrician!
sorry there is no chance of mains, but I will need a fairly silent generator like a Honda due to noise to local residents
 
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May I ask you to amplify what ‘drinks’ you want to ‘cool’? What form do the drinks have before the need to cool? Could you also say something about a typical day’s business selling these cooled drinks: How many in total? What volumetric quantity is each drink? What rate of sale? How many days per week, per month, per year?

and do want to keep already cool drinks cool or to cool drinks which presale are at ambient temperature?
They are 11 kegs of beer that a forced out of the keg (at room temrature) by C02 and into the drinks cooler

To be used all weekend
 

PEG

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Hi,i have done a similar project for a pal,and on assessment,we worked out the following....

You will not want a geny running full time,for sporadic use,and you will not want to start a geny,string or buttton,on every need...

Add to that the extra issues of fuel,security and reliability,and we plumbed for bank of 4 deep cycle batteries paralleled up to an inverter.

These were mounted in a cradle underneath the trailer,and charged up at base,and i believe we had to over spec the inverter,but it worked ok.

You may need to find out some details regarding the start current,running load,and cycle pattern of your chiller,in order to plan an accurate choice of useable stored power,remembering minimum voltage requirements,standby losses,etc.


Just to cheer you up,if you opt for a small,quiet generator,in the scenario described,get two....

If you don't have theft or a breakdown in the first dozen outings....it'll be a first😉
 
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Hi,i have done a similar project for a pal,and on assessment,we worked out the following....

You will not want a geny running full time,for sporadic use,and you will not want to start a geny,string or buttton,on every need...

Add to that the extra issues of fuel,security and reliability,and we plumbed for bank of 4 deep cycle batteries paralleled up to an inverter.
Where you running a drinks chiller? What kind of drinks where you doing?
Can you recomend any batteries; As they all very in size. What size inverter did you have?
Thanks
 

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