Mini Proposal Cakrawala Team

8/17/2019 Mini Proposal Cakrawala Team

1/14


2/14

TEAM INTRODUCTION

Greetings! We are from Cakrawala team; Ardela Ari Wibowo, Fadli Bakhtiar Aji, Nisa

Aziza, and Wischa Tsaniya R. Cakrawala –or in English are called Skyline or Horizon– has a

meaning of the line along which the surface of the earth and the sky appear to meet. We

choose cakrawala as our team’s name because cakrawala represents our point of view to

see things between two categories, which in this case we would like to combine two

different disciplines, industrial engineering and mechanical engineering into one to make an

extraordinary product.

Our team decided to make a stove that will be very useful for all travelers, mountain

climbers (mountaineers), back-packers, campers, and any other outdoor adventure. Our

versatile stove is eco-friendly, for it produces less smoke as we are using gasification

technology and biomass combustion. This stove is also able to generate electricity using

thermoelectric technology which can be used as a source of electrical energy.

BACKGROUND

Indonesia is a vast equatorial archipelago of 17,000 islands extending 5,150 kilometers

(3,200 miles) east to west, between the Indian and Pacific Oceans in Southeast Asia1. The

islands are mountainous with dense rain forests and some have active and non-active

volcanoes. With these beautiful wealthy natural places, Indonesia has become the tour

destination for many domestics and international travelers.

Minister of Tourism and Creative Economy, Mari Elka Pangestu, said the number of

foreign tourists visiting Indonesia during January to March 2014 reached 2.2 million people,

an increase of 10.07% compared to the same period in 2013. In March 2014, the number of

foreign tourists reached 765,607 people and the average tourist arrivals per month during

the first quarter of this year approximately 740,000 people. Many of them stated that the

main reason they come to indonesia is because of ‘holiday’ reason. For example, in 2010,

1Source:http://travel.nationalgeographic.com/travel/countries/indonesia-facts/, accessed on 27th June 2014

06:25

1


3/14

92,9% of Australian tourists as the third with the most tourists in Indonesia stated holiday as

the main reason to come to Indonesia2.

Outdoor travelling such as camping, hiking and other related activities is a way of

recreation worldwide. People come from around the world to discover the beauty of

Indonesia. To feel all that adventurous activity, traveler have to travel in long distance path

mostly on foot. Sometimes they have to camp in the woods or other outdoor places

because of the length of time taken to reach that certain places.

For Indonesian people themselves, to be on vacation out of town or camping outdoor

become an interesting thing to do. Nowadays, technology development contributed to the

variant and sophisticated camping gear sold in the market. Gadgets and portable electronic

devices have become a must-brought items as entertainment while adventuring.

The main problem of gadgets and portable electronic devices brought to camping is

the energy source. Some gadgets and portable devices today cannot be separated in their

everyday activities, the people who are camping and the traveler will need energy sources

when the battery of their electronic devices are running out. Carry a spare battery or a

‘power bank’ might be able to provide a solution, but if the amount that requires to be

charged are a lot, and the backup battery also runs out, it will cause the problem of shortage

of electricity sources. Besides, using power bank or back up batteries is not so environtment

friendly.

Therefore, our team makes an innovation i.e. Biovolta-S (Biovolta-Stove). Biovolta-S is

a biomass stove that can generate power source. Biovolta-S can be a solution for the

traveler and naturalist to be the energy source of their electronic devices, especially in

places that are far away from settlement where it is difficult to get a power source. This

stove will generate electricity from the heat of the combustion process when the stove is in

use and can directly charge our electronic devices. Biovolta-S is very useful for travelers and

naturalist who enjoy using gadgets as a complement to their hobbies.

2Source: http://www.abs.gov.au/AUSSTATS/[email protected]/Lookup/4102.0Main+Features20Sep+2010, accessed on

26th June 2014 22:41

2


4/14

PRODUCT DESIGN

PRODUCT DESCRIPTION

Biovolta-S is a tool that helps travelers’ cooking activity, especially hikers and

backpackers who love to go on an adventure. Biovolta-S is a field stove fueled by biomass.

This stove uses gasification technology which is able to reduce smoke due to incomplete

combustion.

Biovolta stove is not an ordinary stove, it also can generate power whilst you cook.

Unlike solar cell that can generate power only when there is sun, our stove can generate

power anytime, be it day or night.

Basically, Biovolta-S consists of two parts. The first part is the gasification stove and

the second part is the generator module (thermoelectric generator). Thermoelectric is the

kind of generator that use thermal energy directly into electricity. This generator system is

placed under the combustion chamber thus the optimal temperature and durable enough

to withstand biomass ember. In other words, as long as the fire is lit there is electricity.

Figure 1. Biovolta Stove (Biovolta-S)

Figure 2. Pact Biovolta-S

3


5/14

PRODUCT SPECIFICATION

The stove consists of 6 parts which are combined into a camping stove system with

total dimension 211 mm x 150 mm. Each part in the system has specification as follow:

• Part 1 (Protective Tube)

This part has a cylindrical shape and is made of

aluminum with a thickness of 0.5 mm. It acts as a

barrier to protect the fire from wind. It is also used to

protect the user from heat due to combustion.

Figure 3.Protective Tube

• Part 2 (Combustion Chamber)

This part has a cylindrical shape with and is made of

aluminum with a thickness of 0.8 mm. It acts as

biomass combustion chamber. At the top and

bottom of this part there are holes that served as the

entry points of air into combustion chamber so it can

produce a complete combustion.

• Part 3 (Thermoelectric)

This component is the most important component of

the power generation system on Biovolta-S. This

module is capable of generating electricity when

given the temperature at the top (hot side) and cold

temperature (cold side). This temperature gradient

results in the difference in voltage and creates

electricity.

• Part 4 (Heat Sink)

Heat sink is a passive heat exchanger that cools a device by dissipating heat –the cold

side— into the surrounding medium. The fluid medium that we use is water.

Figure 4. Combustion Chamber

Figure 5.Thermoelectric and Heat Sink

4


6/14

• Part 5 (Water Cooling

This part is used to i

the TEG generator sys

• Part 6 (USB House)

This part is a box for

the electric current

phone or any other

part there are 5 D

voltage stable, about

power source.

3D SKETCH OF THE PRODUCT

Figure 8.

Figur

Bucket)

tercept cooling fluid (water) as

tem’s cooling.

USB port. It is used to pass on

from Thermoelectric to cell

lectronic device. Inside of this

converters which keep the

5V, thus can be used as the

Figur

. 3D Sketch of Pact Biovolta-S (dimension embedded)

9. 3D Sketch of Biovolta-S (dimension embedded)

Height: 133.5 m

Width: 150 mm

Height: 211 mm

Width: 150 mm

Figure

e 7. USB House

5

6 Water Cooling Bucket


7/14

INOVATION POINT

The idea Biovolta product derived from the problems that currently occur in real life.

Energy efficient is the primary requirement and is very important for human life today.

Therefore, the development of Biovolta is concerned and based on the problems and is

designed for possible solution. Before getting the solution, we analyze the cause of the

difficulty of getting energy when traveling in recreation activities.

Figure 10. Ishikawa (Fishbone) diagram to analyze electrical energy difficulties during travelling

From the diagram above, we can see that the problem occur are mainly because of

the natural place that has been preserved like rainforest and other natural places. Other

factor affecting the problem is the capability of human when they travel on foot and can

only carry less items. In that case, efficiency of a product is an important key in designing a

travelling aid. Therefore, we see this as an opportunity to develop Biovolta-S to be the

solution to meet the problem. Furthermore, there are not such thing that is available in

Indonesia. So it makes Biovolta-S as the first portable stove that can generate electrical

energy.

6


8/14

Figure 11. Biovolta-S FAST Diagram general function

After obtaining the causes of the problem, we analyse into more deep solution that

can be offered by Biovolta-S. The main goal of using Biovolta-S is to ease outdoor traveller

when they travelling. From the FAST Diagram above we can see that Biovolta-S has the

advantage on its function by combining and using efficient items. When outdoor traveller go

for several days in a long distance trip they have to bring all the stuff needed to survive,

because not all the equipment are available in the nature. To ease outdoor travellers there

are many kind of backpack sold on travelling gear shops. But not all the items can be carried

in a single backpack, so travellers have to bring the items that they most needed. Biovolta-S

combine two function at a time. It makes Biovolta-S more efficient to be carried than using

other kind of stoves available on the market.

Figure 12. Biovolta-S FAST Diagram

7


9/14

Figure 13. Biovolta-S FAST Diagram

Subsequently, Biovolta-S can provide excellence in the space needs. The advantages of

Biovolta-S is because of its practical form and can reduce the fuel needed, so it can reduce

the content of the bag. Moreover, Biovolta-S is providing the power source that can not be

found in nature in easy way.

The superiority of the product not only comes from its multi-function, but also the

ergonomic design. Until now, there is not any ergonomic portable stove that available in the

market or in industry. Biovolta-S, besides offering functions, also designed in accordance

with human needs and characteristics. The ergonomic design help user to use it more

convenient, so traveller will obtain more productive manner when they use it. Other

innovation that is offered by Biovolta-S is listed below.

• Green Energy

By utilizing biomass energy that is abundant in nature, especially Indonesia, we were

able to participate in the energy savings of oil and gas that are usually become a

standard camping stove fuel.

• No fuel carrying

Because this stove is aimed to all naturalists, backpackers and other travelers, we

especially design a stove that uses biomass energy, where all kinds of plant products

(branches, leaves, coconut shells, etc) that can be burned to produce heat. So you do

not have to bring any fuel with you.

8


10/14

• Charging device

This stove is equipped with power generator TEG (Thermoelectric Generator) based.

Thus, this stove can be the solution to your power battery shortage problem when

you are on your trip. It is also equipped with USB port. You can always connect your

gadget by using USB cable with requirement of 5 Volt electricity current.

ERGONOMICS ASPECT

USABILITY

Biovolta-S has two primary function, for cooking purposes and charging gadgets. The

small dimension of Biovolta-S makes it easy to handle. Biovolta-S also provide efficiency of

energy, because the wasted energy from cooking is modified into useful electric energy.

With two different function, the person can decrease the amount of stuff carried. They can

also eliminate regular stove and its fuel from their bag that usually encumber users.

We breakdown the usage of Biovolta-S into two main activity category, handling and

using. Travelling required handling or carrying stuff as an important task during the activity.

Handling not only constitute carry-activity, but also include the activity to undo Biovolta-S to

be ready to use and resemble it again into the pack form. Use activity means the activity

when someone using Biovolta-S to cook and charge batteries.

Figure 14. Handling flowchart

9


11/14

Figure 15. Usage flowchart

From the flowchart above we analyze that the main activity that involved the most is

the activity on the ground when the stove is being used. For safety reason, stoves are

usually used on the ground when using it outdoor to mitigate contact with combustible

material. Using ErgoFellow software, we analyze the usage of regular portable gas stove and

misting (a common handmade stove for emergency situation used in woods). Those stoves

is 9,14 cm height in average. When using those stoves, Indonesian user has to bend for

about 610. With RULA analysis, those stoves have a score of 5 which means investigation

and changes are required soon.

Biovolta-S is 21.1 cm in used position. The height of the stove is suitable for

Indonesian with the average height of Indonesian people 165 cm.3

When using Biovolta-S,

users are only have to bend for about 200. With RULA analysis, Biovolta-S score is 3. This

means that it is a better design compared to two previous stoves, but required further

investigation.

3Source: antropometriindonesia.com/index.php/detail/artikel/4/10/data_antropometri (Table1)

accessed on 28 th June 2014 20:54

Figure 16. ErgoFellow interface for trunk position

10


12/14

ANTHROPOMEMTRICS

We apply physical ergo

comfort and safe product. A

stove height when it is in us

women over 17 years old.

Table 1. C

The Biovolta-S has 21.1

So, when in use user’s elbo

not too wide for an easier w

when the stove is in used, the

nomics in our product design by using anth

nthropometric analysis is applied to get th

e. We use Indonesian people anthropomet

Figure 17. Anthropometrics Aspect

ategorized Anthropometrics Data of Indonesian People

Source: antro

cm of height, adjusted to elbow height of

s forming an angle of 70o-90

o. Biovolta-S h

ay to carry. We made this as comfortable

user’s arm will be less fatigued.

opometry to get a

dimension of the

ics, both men and

pometriindonesia.com

Indonesian people.

as 15 cm of width,

as possible so that

11


13/14

Aside from the elbow, ergonomic stress area also present on the neck. The height of

our product has a difference of about 50 cm with the eyes’ height on sit position. Thus users

of Biovolta-S have to bend their neck with an angle of 10○-20

○. This angle may not be the

best condition to work, but the effects that it causes are relatively small. Users will stay

comfortable since the preparation of Biovolta-S does not take a long time.

Figure 18. ErgoFellow interface for neck position

Biovolta-S has a top diameter of 12 cm. We research the dimension of camping pots

nowadays, which is about 13 cm, to determine the top diameter of our product. Biovolta-S

is equipped with 3 vessels to support the weight on it during use so as not to easily fall or

shift. Moreover, Biovolta-S has a cylindrical part that acts as a barrier to protect the fire

from wind. It is also used to protect the user from heat due to combustion. So it is totally

safe for the user to move the stove while cooking. When not in use, you can undo Biovolta-S

into pact. It will reduce the height for about 36%; making it much simpler and easy to carry.

You can even put it into your bag.

Our product is an eco-friendly product. The fuel is easy to find because we can have

it from the nature. Pollutants resulting from the combustion process are also relatively less

than the existing biomass stove. By using gasification technology and biomass combustion,

it produces less smoke and complete combustion. This is certainly good for eyesight and

respiratory health of users and also produces less CO and CH4 gases due to burning by the

help of H2 produced by biomass burning. By minimizing CO and CH4 gases, it can reduce

the damage to nature, because these two gases are the cause of the greenhouse effect.

SAFETY, HEALTH, AND ENVIRONTMENT

Biovolta-s is safe to use with a top diameter of 11.5 cm, wide enough to support the

weight above it when in use. Furthermore, our stove has a cylindrical part as a barrier toprotect the fire from the wind and to protect the user from heat caused by combustion.

12


14/14

When not in use, Biovolta-s can be undone into pact form, thus it’s easy and safe to carry

while traveling.

Our versatile stove is eco-friendly, for it produces less smoke as we are using

gasification technology and biomass combustion. It is certainly good for user’s eyesight and

respiratory health and also produces less pollution that can harm the environment.

Mini Proposal Cakrawala Team

Documents

Transcript of Mini Proposal Cakrawala Team