Dishwasher on solar hot water (or gas, oil)?

[Did67]

I don't know if we are talking about the same thing. It looks like that; but I don't know the price:

http://www.solarworxs.com/73-155-home/v ... degres.jpg

This exists without the chrome part, just a plastic "button", you plug on the outlet, you plug the cold water on the side, the mixed water comes out at the end; you rule once and for all on 60 ° and more risk ...

It is not at all a thermostatic tap like sink or bathtub (expensive because chrome). It is also called a 3-way thermostatic valve.

[Christophe]

Continuation of tests on DHW:

- LV well loaded, fairly dirty dishes
- Cycle at 30 minutes (which I never used before because cleaning is really limited)
- Consumption: 0.76 kWh according to the PM. The manual gives 0.8 kWh (while we are on hot water ??).
- Positive point: the dishes are impeccably clean!

So in the end so disappointing it's not so negative: I gain for the same result of dishes, 130 minutes of cycle, a few tenths of kWh (1.2 - 0.8 = 0.4 kWh = in my case, almost 1 detergent at 0.5 kWh free for each dishwasher cycle!), and a few L of water (9 against 15 according to the instructions) ...

Next, I try the auto mode ... but very little chance that it will be more economical ...

[Macro]

We always use the short cycle. And it washes properly ... Maybe because we're on hot water ...

[Christophe]

Continuation of tests on DHW:

- LV well loaded, fairly dirty dishes
- Cycle at 30 minutes (which I never used before because cleaning is really limited)
- Consumption: 0.76 kWh according to the PM. The manual gives 0.8 kWh (while we are on hot water ??).

I confirm the 2nd test: identical results (0.75 kWh), impeccable dishes. This time I had preheated the hot water well at the tap.

It seems to me that on this short cycle, the heating resistance is ON almost all the time and it looks like it's more of a tempo than a thermostat!

I did not measure it but the temperature of the drained water is very hot in my opinion we are at least in the 60-65 ° C PVC evacuation pipe heats up very quickly! It would be a good thing to measure it ...

The next cycle, I do it automatically.

[Christophe]

Test in automatic mode with preheating of water at the sink: 1.15 kWh with fully loaded dishwasher. Duration 120 min.

Automatic mode is therefore almost as economical as eco mode (1.09 kWh)

[Philippe Schutt]

I do not know if it is useful, but here are the consumptions noted su a complete wash:

filling solenoid valve: 0.04A
drain pump: 0.29A
washing pump: 0.59A
washing pump + heating: 9.15A
drying: 0.1 A
total consumption: 1.16kwh

[Christophe]

Waw how did you manage to get the different consumption items? By ear?

A = maximum measured power I presume?

1.16 kWh like me, so what is a model?

[Did67]

No, I assume that A = Ampere and that it is therefore the intensity of these different organs. By multiplying by 230 we have the power. After that, it would take the operating time of each organ over a cycle. I imagine that this was noted with the current clamp on an "open" LV ...

Too bad we can't distinguish the heating part from that of the washing pump. There, we would be at the heart of our debate!

The total consumption is surely raised like you ...

What I did not understand: is it with cold water or hot water at the entrance?

[Christophe]

Yes obviously it is an abuse of language on my part, I should have said Max intensity ...

We have the difference:

washing pump: 0.59A
washing pump + heating: 9.15A

heating = 9.15 - 0.59 ...

[Philippe Schutt]

Well, I measured with a PM230 from econolotruc (no ads, eh!)
it's with cold water. Indeed, the 2nd step would be to time the phases, in particular to note the time of starting and stopping of the heating.
These are not maximum consumption, they are consumption and they are stable in each stage.
it is a built-in ADG 85832/1 whirlpool. Simple machine, classified A.
The program was the "daily 65 °", which is supposed to consume 16L of water and 1.35kwh in 120mn