Post on 19-Feb-2017
Improved Cook Stove (ICS)Journey to Intelligent Green Cooking
A stove is the combination of heat generation and heat
transfer to a cooking pot .
Cook stoves are commonly called “improved” if they are
more “efficient” than the traditional cook stoves.
“Efficient” mean Energy efficiency
The core question concerning the efficiency of two
alternative stoves is: “With which of the two stoves do I use
less fuel to prepare my meal?”
These stoves may be built under ground or over ground.
Heat transfer to the cooking pot is very low, resulting into low efficiency.
Mud-built cylinder with three raised points.
Because of the large size of the flue gas exits lowering conventional heat transfer.
Emits smoke, which affect the health of the usersIncomplete combustion of biomass fuel
Issues Traditional ICS Smart ICS
Heat Trapping No
Yes through sealed body with glass wool and black coated outer side of inner
body
Self Heat Consumption
Yes, made of cement, sand and crushed brick, these material consumes heat faster and release faster
Negligible amount as SS sheet is used
Corrosion ProblemYes, cause dimension
change of body, air inlet/ Outlet and feed holes
No
Issues Traditional cooking stove Smart ICS
Installation Type Most are fixed, site selection is important Portable
Ready to go
After installation required certain time for ensuring dry stove is thoroughly
rubbed
Ready to use immediately
Body fracture/crack
Required smoothen the ICS body with mud or
cow dung at least twice a week
No such problem
Issues Traditional ICS Smart ICSChimney Clogging
ProblemYes, required cleaning
once in a week No cleaning required
Dimension Change Problem of Air inlet/Feed
hole
Yes, Due to the corrosion of cement or mud the air
inlet or feed hole dimension may change,
result of improper combustion
No
TYPES OF ICSA) Fixed: i. Single stove with filter plateii. Single stove without filter plateiii. Double stove with chimneyiv. Double stove without chimney
B) Portable: i. Single stove with filter plateii. Single stove without filter plateiii. Double stove without chimney
COMMON PROBLEMS OF EXISTING ICS:
Required installation, hence additional cost of installation, labour
charge are concerned issues.
After installation required certain time for ensuring stove is
thoroughly rubbed else wet and partially damp stove consume large
amount of fuel and flexibility.
improper combustion, excess firewood use
COMMON PROBLEMS OF EXISTING ICS:Chimney blockage by deposition of soot on the inner wall and cause
flame and hot flue gas coming out through feed hole during cooking
instead of releasing through chimney.
Body fracture/crack due to heat pressure after continuous use of stove
for a week.
Required smoothen the ICS body with mud or cow dung after 5-7 days
of use for preventing body corrosion.
COMMON PROBLEMS OF EXISTING ICS:
Advance preparation of cooking stuff is required, so after cooking one
item immediately another item has to place in stove to save energy of the
stove. (Heat trapping system absent).
For double mouth ICS both mouth should be in use cooking at same time
whereas it is tough to manage cooking simultaneously in two mouths.
After using for long time, the diameter of hole of grate becomes larger,
as a result some piece of firewood will fall down through the grate without
burning, which ultimately increase the fuel use.
Heat transfer into the pot & Heat Trapping
Handling of the fuel
Handling of the stove
Management of the cooking process
Cooking environment
Principle-1: Whenever possible, insulate around the fire using lightweight,
heat-resistant materials.
Principle-2: Place an insulated short chimney right above the fire.
Principle-3: Heat and burn the tips of the sticks as they enter the fire.
Principle-4: High and low heat are created by how many sticks are pushed into the fire.
Principle- 5: Maintain a good fast draft through the burning fuel.
Principle-6: Too little draft being pulled into the fire will result in smoke and excess charcoal.
Principle-7: The opening into the fire, the size of the spaces within the stove through which hot air flows, and the chimney should all be about the same size.
Principle-8: Use a grate under the fire.
Principle-9: Insulate the heat flow path.
Principle-10: Maximize heat transfer to the pot with properly sized gaps.
GREEN FIEND
GREENFIEND1234 Sample Street, Anytown, St. 12345
SHAKIL
Materials for Making ICS
1. Steel Sheet
1. Glass wool
Inner body7’’
2’’ 4.75’’
10’’
9’’
1.5’’ Smoke Isolator
Fuel Carrier
Feed Hole
AshOutlet
2.5’’
1’’
9.75’’ 6’’3.5’’
11’’
1.5’’
0.5’’
15.75’’
4.75’’
3.25’’
1’’
1.5’’
Outer & Inner body connected with slope
Smoke Isolator
Stand
Outer Body
1’’ width( Filled up with glass wool)
Door (For Feed Hole & Ash Outlet)
1.75’’
3.75’’
2.1’’
Air Blower Connector
6’’
Air Blower
5.5’’
4’’
6’’
Blower Stand
Chimney
39’’
5.5’’
2.75’’
8’’
8’’
Water Tank (Inner body)
Water Tank ( Outer Body)
10’’ 2.75’’
7’’
6.75’’
4’’2.5’’
6’’
3’’14.75’’
5.75’’
3.5’’12’’
Smoke Outlet( Chimney Connector)Tank CapTank Holder
Water Tap
Smoke Inlet to tank
Tank Stand
Robust design with dual body layer to constrain heat inside the
burning chamber for long time.
Efficient insulating material : glass wool (Thermal conductivity: 0.04W/m.K) is used in the middle of the dual bodies to isolate outer body from adjacent chamber body hence heat transfer through stove body is baulked.
Inner body containing burning chamber is coated black in
outer surface to keep maximum amount of heat inside the
chamber.
Intelligent smoke outlet system engineered to prolong smoke
exertion from the burning chamber and forged to maximize the
existence of heat into the stove.
Separate feed hole and air inlet with insulated door make efficient
heat collapsed stove.
Perforated fuel carrier, which stands at the middle of air inlet.
Therefore, easy access of air to fuel wood for ensuring optimal
combustion of fuel wood hence maximizes the stove’s efficiency.
Additional water boiling system is adjusted with the system, where
smoke exerting from burning chamber is maneuvering to heat the
water for using extend purpose.
This tank is also constructed with dual part where inner body is coated
black outside for storing heat inside. Moreover, this additional part can be
used for ordinary heating, boiling of food preparation.
After heating tank body smoke is proceed to flow through long chimney
(78 inch) to ensure releasing clean smoke to the environment.
GREEN FIEND
GREENFIEND1234 Sample Street, Anytown, St. 12345
Design materials :
Mild steel (MS)
Asbestos
Galvanized iron (GI) sheet
(a) (b)
a) Body structure of Model: ICS-P2, b) Skart
Height40 cm
8cm
10cm
20cm
15cm
14cm opening
Chimney top open part
Chimney top open part
Flue gas conduitChimney with Top
Front view without ash tray
Side View
Front view with ash tray Back view with Chimney holder
8’’
4’’
tray
Biomass inlet
Top View
Ready to use ICS
Target arenas where we did the development ;1.Efficiency 2.Economic feasibility3.Hygiene4.Environmental Issues 5.User friendliness
Combustion improvement:Adequate air flow Relatively high draftProper heat conduction:Conical shape potrest to guide the flue gas to pot Materials of ICS:Asbestos
Materials Used For The Body : Steel Sheet
Iron Rod
Steel Sheet Net
Insulation Material : Glass Wool
SMART ICS DESIGN -3
Ash PotAsh Pot
Water boiling test (WBT)
Controlled cooking test (CCT)
Kitchen Performance Test (KPT)
Lets tie hand together endeavoring green
cooking technology