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eCook
References available on request. More info: PV-eCook.org or [email protected]
A MODERN ENERGY COOKING SERVICE FOR POOR HOUSEHOLDS IN AFRICA AND ASIA
THE PROBLEM
THE SOLUTION
EFFICIENCYThe problem of cooking with electricity can be:-
NO ACCESS OR INSUFFICIENT ACCESS - rural households don’t have it or the supplyis very weak!
BURNT OUT WIRING - drawing high power for cooking through small wires overloads and burns the wiring
BLACK OUTS - load shedding either planned or unplanned means the household cannot cook when it wants.
LOW VOLTAGE - we have measured as low as 40V on a national grid that was meant to be 220V, meaning that cooking equipment doesn’t work
Solve these problems by trickle charging a battery, cook when you want, charge whenever power is available
TRICKLE CHARGE from other sources during the day & night
TRICKLE CHARGE from national grid during
the night when there is spare capacity
TRICKLE CHARGE the battery from Solar PV during the day when the sun shines
For utilities and IPPs, this can mean more revenue and a more effectively used power system.
Use less energy by...
Our research has shown that electric pressure cookers are desirable to African & Asian cooks because they’re faster, more convenient and cheaper than hotplates
The Bean Boiling challenge.
Boiling 1 cup of beans
With no efficiency measures 2kWh
(2 units of electricity) to get
tasty beans
Even if you dont get a battery, consider a modern electric pressure cooker. They give the best efficicency and are readily on the market.
With efficiency measures 0.1kWh
(0.1 units of eletricity) to get
tasty beans
* Induction plates are more efficient because they heat the pan directly. But if a hotplate is used in a sealed insulated environment, induction offers no advantage
Yes, and its only going to get cheaper.Falling prices are driven by learnings from electric vehicles and renewable energy
USE THE BATTERY ENABLED COOKER WHENEVER YOU WANT!
US
$ pe
r KW
h
2010$0
$900
2015 2020
LITHIUM ION BATTERIES HAVE BEEN COMING DOWN IN PRICE
IS IT COST EFFECTIVE TO COOK WITH A BATTERY?
Hydro gridssurplus energy
particularly at night
Wind Powerenergy available
when the wind blows
Any micro or mini grid
Using a lid1
Making sure the pan fits*2
Insulating the pan3
pow
erge
nera
tion
00:0
0
0
600
02:0
0
04:0
0
06:0
0
08:0
0
10:0
0
12:0
0
14:0
0
16:0
0
18:0
0
20:0
0
22:0
0
24:0
0
Daily distribution of energy from a Solar PV system
time of day
pow
erge
nera
tion
00:0
0
0
1600
02:0
0
04:0
0
06:0
0
08:0
0
10:0
0
12:0
0
14:0
0
16:0
0
18:0
0
20:0
0
22:0
0
24:0
0
Profile of load demand on National Grid
time of day
OR
OR Caro
l, W
inne
r of t
he Za
mbia Bean Boiling challenge 2018
Creating a pressurised chamber with the pan
releasing the hotplate for other dishes
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Battery Gauge
Adjust power levelPower on and off
Integrated battery inside
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POWER
OFF A ON
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BATTERY TEST
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POWER
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BATTERY TEST
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POWER
Renewable Energy
Continue cooking by retaining heat
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