Power efficient Appliances

[wingnut771]

The article from The Guardian , linked below , is the reason why I have not yet dumped my electric stove. It discusses the health impacts of gas stoves and compares it to the effects to secondhand smoke.

Are gas stoves really dangerous? What we know about the science

New studies are showing just how harmful gas stoves can be, but there are good alternatives to the open flame

www.theguardian.com

Yeah, they not very healthy, and they suck if there is a whiff of a breeze. Induction stoves FTW. Induction heats the pot with magnetism.

 

[Ma’bad]

Yea with devices that doesn't use a lot of power , it is kinda silly to replace a device if it hasn't failed

ie if a fridge uses 4K a year to run a 10% R400 saving means how many years to recoup the cost of new fridge?

Most devices have efficiency rating lately , so just choose the most efficient available when you buy a new one

The only device that may be worthwhile exchanging is geyser
Since that is high consumption device using a heat pump may reduce consumption by 75% thumb suck

But a geyser is such a nice cheap battery for excess solar if you don't have loads of batteries

So don't see the point if you meet the need via solar already

I believe heat pumps would save more energy, and it is in my wishlist, when finances allow.
My geyser consumes electricity every time hot water is used, even for washing dishes. Also when hot water is needed most, like early in the morning, there isn't enough solar power, so I end up relying on Eskom.

Capital cost - heat pump =25k, lasts 10 yrs
I use 200-300 kwh / month geyser - R600-900 saving - 25%

 

[wingnut771]

I believe heat pumps would save more energy, and it is in my wishlist, when finances allow.
My geyser consumes electricity every time hot water is used, even for washing dishes. Also when hot water is needed most, like early in the morning, there isn't enough solar power, so I end up relying on Eskom.

Capital cost - heat pump =25k, lasts 10 yrs
I use 200-300 kwh / month geyser - R600-900 saving - 25%

Spend R4.5k on another 150l geyser and heat up 300l during the day when the sun is shining and battery is charged and save 20k, also lasts 10+ years. R25k can buy 16 x 500W PV panels.

 

[leon.davibe]

I believe heat pumps would save more energy, and it is in my wishlist, when finances allow.
My geyser consumes electricity every time hot water is used, even for washing dishes. Also when hot water is needed most, like early in the morning, there isn't enough solar power, so I end up relying on Eskom.

Capital cost - heat pump =25k, lasts 10 yrs
I use 200-300 kwh / month geyser - R600-900 saving - 25%

I don't have massive battery so don't run overnight , so switch over auto in the morning to battery and empty the last bit using the geyser , and then use the geyser to prevent the batteries from charging full too quick

Yes if roof space is limited i may do a heatpump

If not i would do as wingnut says
More panels instead

Have heard many people complain about heatpump reliability on geyser

heatpump on pool seems trouble free

Maybe low budget models to blame

 

[leon.davibe]

I believe heat pumps would save more energy, and it is in my wishlist, when finances allow.
My geyser consumes electricity every time hot water is used, even for washing dishes. Also when hot water is needed most, like early in the morning, there isn't enough solar power, so I end up relying on Eskom.

Capital cost - heat pump =25k, lasts 10 yrs
I use 200-300 kwh / month geyser - R600-900 saving - 25%

The roi is quick so either model can work heatpump or more panels

 

[Tongs of Destiny]

if you choose a solar geyser, then bite the bullet and get a stainless steel one. 10 year guarantee <-- that doesn't mean it lasts 10 years...
a 200L geyser is R25,000 (high pressure)

also look at a gas water heater, they're only like R5,000 - R9,000 very efficient and instant hot water, used with a 48kg gas bottle mostly.

 

[wingnut771]

Solar geysers are fugly and gas geysers have a lot of regulations to jump through like distance to windows, aircons, drains and whatnot and are also still reliant on our evil overlords for supply and will just get more and more expensive as the rand tanks.

 

[Tongs of Destiny]

Solar geysers are fugly and gas geysers have a lot of regulations to jump through like distance to windows, aircons, drains and whatnot and are also still reliant on our evil overlords for supply and will just get more and more expensive as the rand tanks.

high pressure solar heaters are almost invisible, the tubes inside a glass panel are flat on the roof (like 2 solar panel sizes) then the geyser tank is inside your roof, not fugly at all. The low pressure ones with those 45 degree standing things like a township are yes fugly..

yeah all gas over 9kg is regulated quite strictly, don't ask me how they come up with things. You can have a 9kg gas bottle oven / stove in your kitchen no problem... huh lol

 

[wingnut771]

high pressure solar heaters are almost invisible, the tubes inside a glass panel are flat on the roof (like 2 solar panel sizes) then the geyser tank is inside your roof, not fugly at all. The low pressure ones with those 45 degree standing things like a township are yes fugly..

yeah all gas over 9kg is regulated quite strictly, don't ask me how they come up with things. You can have a 9kg gas bottle oven / stove in your kitchen no problem... huh lol

The last house I stayed in we couldn't even install a gas geyser even if we wanted to because it couldn't be near a drain, window or aircon. Good to know about solar geysers but I'll still take extra PV panels over anything else which should run rings around a solar geyser during cloudy weather.

 

[Tongs of Destiny]

The last house I stayed in we couldn't even install a gas geyser even if we wanted to because it couldn't be near a drain, window or aircon. Good to know about solar geysers but I'll still take extra PV panels over anything else which should run rings around a solar geyser during cloudy weather.

found a pic on the web, this is what that solar geyser looks like on the outside (don't ask me what that solar panel is)
normal solar prices have come down a lot since I installed mine...damn

 

[leon.davibe]

found a pic on the web, this is what that solar geyser looks like on the outside (don't ask me what that solar panel is)
normal solar prices have come down a lot since I installed mine...damn

The panel is for circulation pump
Since tank is lower than panel
Or
You can have 220v runnng from eskom/inverter requires geyserwise or other controller

While this panel means no controller needed ie water stops circulating if sun is gone and starts when sun is out, if you need control of backup element then controller or timer needed again

The ones on the stand with tank higher uses a syphon effect ie the hot water rising in panel sucks cold water from tank bottom to heat and rise again so no controller or puo needed

 

[leon.davibe]

Imo if going solar geyser you only go for evacuated tube system better perfomance in colder/cloudy conditions



Though i would not do solar geyser if going solar PV


Since solar pv winter provisioning means you will have surplus energy most of the year

Dumping excess into geyser is probably more cost efficient

and if you use money of solar geyser for more panels you have less chance of needing eskom on cloudy days too

 

[backstreetboy]

Instant pot. It’s insulated and cooks food much faster because you don’t lose heat energy to evaporating water. Close the lid after cooking and your food keeps warm for hours so you don’t have to keep reheating. Also it has many modes so you have less dishes to wash.

It’s just another pressure cooker.

 

[Shayd]

As a general rule, Bosch appliances are efficient as they are built with the European market as their primary market. I can recommend them for a mass market brand. They won't be as good as a purpose-built DC fridge etc but a good option