Jeg fikk svar fra Kegland som var litt tja, men det var vel forsåvidt spørsmålet mitt til de også:
Hi.
I now have 4 brews on my Brewzilla, all of them 25 litre batches, from the first batch i thought the boil was quite weak, even at full power but i supposed it was due to the cold enviroment with around 5°C in my garage, so i bought the coat to put on as well, but still its not a very strong boil, and if i circulate through my counterflow chiller (also Kegland) without cooling for disinfection it can not maintain the boil.
Now another user complained on a norwegian forum that his 65L would not make a boil at all on a 50 litre batch, and it turns out there are various experiences on this, some say their brewer is plenty hot, while others like me have a weaker boil, so i decided to meassure the power usage on it, and heres what i found:
Heating used: Power drawn:
500W. 478W
1000W. 935W
1500W. 1375W
2000W. 1692W
2500W. 2110W
3000W. 2510W
3500W. 2911W
Currency was 235V from without load to 228V with full load, pump was running on all measurements, and with that using around 15W it is missing around 600W on full power.
Is this normal, or is there something wrong with it? I cannot see this brewer will be able to make a boil when full.
Thanks, Rune.
Og svar fra Kegland:
Hello Rune,
Those numbers would still be adequate. Please also remember that the rating is the max rated wattage when the power is up to 240V.
I believe the power in Norway is 230V not 240V. So firstly thats a reasonable difference.
The secondly if you are using a power cord if the cord is not correctly rated/old or the copper is simply a bit think you can expect to see another 2-10% losses in the power cable. IF you try and measure this it can only be measured under load. So you can put a voltage meter on both ends of the extension cable you have to determine the voltage drop (UNDER LOAD WHILE THE BOILER IS ON) and then determine your power cable losses.
By far the most important thing is reducing heat loss from the body of the unit. In ambient temp of about 22C you will loose about 400-500watts of your heat through the side walls of the unit to atmosphere. So getting the jacket is a good idea. IF you are in norway with really cold ambient temp you can expect this loss to be higher. Maybe eve 1000watt of losses.
So even if you have 2911watt consumption you might be losing 1000watt through the wall of the boiler rather than driving off liquid which is really what you want to do.
Jeg har brukt skjøyteledning, og har forsåvidt tenkt på den, men slo fra meg den som synderen da den er bare rundt 5-6 meter lang, og på 2.5 kvadrat, men jeg skal få tatt en måling uten den også en dag.