Improved Cook Stove (ICS)

Improved Cook Stove (ICS)Journey to Intelligent Green Cooking

WHAT IS ICS

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

TRADITIONAL COOKING STOVE

DIFFERENCE BETWEEN SMART ICS WITH TRADITIONAL COOKING STOVE

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


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.


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.

FACTORS BEYOND THE DESIGN CONCERN

Heat transfer into the pot & Heat Trapping

Handling of the fuel

Handling of the stove

Management of the cooking process

Cooking environment

TEN DESIGN PRINCIPLESPrinciple-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.

SMART ICS DESIGN -1Materials for Making ICS

1. Steel Sheet

2. Glass wool

DESIGN STRUCTURE

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

DESIGN STRUCTURE

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

DESIGN STRUCTURE

Chimney

39’’

5.5’’

2.75’’

8’’

8’’

Water Tank (Inner body)

DESIGN STRUCTURE

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

DESIGN STRUCTURE

SALIENT DESIGN FEATURES

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.

SALIENT DESIGN FEATURES 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.

SALIENT DESIGN FEATURESThis 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.

ICS DESIGN (GROUP-2)

Design materials :

Rot iron

Asbestos

Galvanized iron (GI) sheet

Inner surface covered with clay

DESIGN STRUCTURE

DESIGN STRUCTURE

DESIGN STRUCTURE

DESIGN STRUCTURE

DESIGN STRUCTURE

DESIGN STRUCTURE

Different steps in making a portable improved stove

A rectangular shape is our first think to develop this kind of stove, which is portable, sustainable, take a greater amount of load. Then we think the scientific and technical obstacles to over come for utilizing the resources best. For rectangular structure it can bear huge weight.

Materials Used For The Body : Steel Sheet

Iron Rod

Steel Sheet Net

Insulation Material : Glass Wool

SMART ICS DESIGN -3

Inner Body

Design Structure

Outer Body

Design Structure

Exhaust Pipe

Design Structure

Exhaust Pipe

Design Structure

Carrying Handle Ash PotDESIGN STRUCTURE

Ash Pot

TESTING PROCEDURE

Water boiling test (WBT)

Controlled cooking test (CCT)

Kitchen Performance Test (KPT)

NEW BEGINNING

Lets tie hand together endeavoring green

cooking technology

THANK YOU

Documents

Improved Cook Stove (ICS)