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