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Rick H Parker

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Reply with quote  #31 

This one here looks like what you're looking for.

The information in that one is in the other also. Don’t sweat it, getting the technical specifications or the manufacture’s test results can be almost impossible. A lot of consumable product manufactures follow the economics of mustard. The profit is not in the mustard on the sandwich, it is in the waste on the plate. They are relucted to give out information that can used to reduce waste.

He said that when the power comes back, the surge blow their bulbs and he believe that power rushed in = electricity spike = more usage.

Common misunderstanding of the difference between power and energy. A spike can produce a large power surge but the time duration is so short the energy consumption is not much.

Change their bulb to the spiral type (the one that use less power) is not a big deal to lower their consumption.

Changing from Incandescent to equivalent Compact Fluorescent (spiral type) energy consumption for lighting will decrease by a factor of 4. From Incandescent to equivalent fluorescent tubes energy consumption for lighting will decrease by a factor of 8 and tube type last the longest. There is a reason business have been using the tube type for decades, tube types are the most cost effective.

p/s: Since I can't find suitable inverter/charge controller for low usage before, I had this idea to put 2kW+ in 1 house and share the power with the neighbor. Alas, it's better to have 1 low system for 1 house.

This is for a small village? Microgrid might be the way to go. Some inverters and charge controllers are stackable, that is they can be combined to function as one bigger unit. The system can be scaled up if it needs to be.

They might need to reset a microgrid from time to time but that sure beats days without power.

 

 

 

I would love to know the brand of that fridge! My medium-sized 2-door fridge uses about 1000wh/day by itself, it's the single biggest load.

 

1000wh/day is about right for a refrigerator (Fridge +Freezer) with typical American options like Ice makers, automatic defrost and condensation control which consume energy.

 

 


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Rick H Parker
Kansas, USA
Electronics Engineering Technologist

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Reply with quote  #32 
"1000wh/day is about right for a refrigerator (Fridge +Freezer) with typical American options like Ice makers, automatic defrost and condensation control which consume energy."

Yeah but it has NONE of those features... It's an Avanti (Chinese made I think isn't everything today?) with a manual thermostat and no defrost or icemaker, purchased deliberately so it will run off an inverter (it does just fine).  It IS 7.4 cu ft which I suspect while small by our standards is probably pretty big compared to the one we were discussing.  

Still I'm curious what that family (or any of the other families in mention) actually uses in way of equipment.  My thought was lights and some electronics, I never dreamed there would be a fridge, at 500wh/day.

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Willie, Tampa Bay
Rick H Parker

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Reply with quote  #33 
Still I'm curious what that family (or any of the other families in mention) actually uses in way of equipment.

That would be helpful information.

I never dreamed there would be a fridge, at 500wh/day.

The only way I can fit it into 500wh/day is ... it is a fridge only not a refrigerator, in other words no freezer ... or a dual powered unit such as we use in RVs. If I lived someplace power outages were frequent, I would not trust my food supply to an unreliable energy source.

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Rick H Parker
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Reply with quote  #34 
I think it has a freezer:
"They have a 2 doors fridge (not big, not too small)...."
Maybe what we call a "compact" unit?

I don't think a microgrid would work, management, metering, billing, etc. It would add a lot of complexity and cost. This way, everyone is responsible for their own usage.

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Rick H Parker

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Reply with quote  #35 
I don't think a microgrid would work, management, metering, billing, etc. It would add a lot of complexity and cost. This way, everyone is responsible for their own usage.

A microgrid does not need to be metered. In this case it is a gift, no need for billing. As Sran said usage won't go up due to financial constraints.

I think your refrigerator's claim to inverter compatibility might be an extra large start capacitor, which brings the startup power draw way down.

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Rick H Parker
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Reply with quote  #36 
My thought with the microgrid is how do you handle the energy pigs? Sooner later the grid WILL go down and then there will be blame and finger-pointing. For the same reason one house "can't" supply it's neighbor; human nature.

With independent units you learn to live within your energy budget, you can't blame your neighbor for "using more than his share". (Good fences make good neighbors)

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Rick H Parker

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Reply with quote  #37 
Good fences make strangers. Greed is not human nature, if it was we would still be in the stone ages. Greed is a psychology disorder.
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Rick H Parker
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Reply with quote  #38 
It is, but the world is full of it, and we have to deal with it.
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Rick H Parker

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Reply with quote  #39 
Deal with the misfits, don't structure around a the misfit's behavior.
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Rick H Parker
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Reply with quote  #40 
Go for it.

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Willie, Tampa Bay
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