Difference between revisions of "Muhammad Alif Kurniawan"

From ccitonlinewiki
Jump to: navigation, search
(Material Selection)
(Material Selection)
Line 247: Line 247:
 
When choosing a material for a hydrogen tank, there are several factors to consider. Some of the main factors to consider are:
 
When choosing a material for a hydrogen tank, there are several factors to consider. Some of the main factors to consider are:
  
Corrosion Resistance: Hydrogen has the ability to cause embrittlement or corrosion of some materials. Therefore, it is important to choose a material that has good resistance to hydrogen corrosion.
 
  
Mechanical Strength: Hydrogen tanks must be able to withstand high pressures and withstand mechanical loads. Therefore, the material chosen must have sufficient mechanical strength to handle the desired hydrogen pressure.
+
1. Corrosion Resistance
  
Rigidity and Leakage: The material selected must have sufficient rigidity to prevent unwanted deformation or leakage of the hydrogen tank.
 
  
Surface Smoothness: The surface of the material must be sufficiently smooth to avoid hydrogen buildup or leakage through small cracks in the surface of the material.
+
Hydrogen has the ability to cause embrittlement or corrosion of some materials. Therefore, it is important to choose a material that has good resistance to hydrogen corrosion.
  
Compatibility: The material selected must be compatible with hydrogen and not cause harmful or damaging chemical reactions over long periods of time.
 
  
Availability and Cost: Material availability and manufacturing costs are also important factors to consider in selecting hydrogen tank materials. Materials that are generally available and affordable can be a more practical choice.
+
2. Mechanical Strength
 +
 
 +
 
 +
Hydrogen tanks must be able to withstand high pressures and withstand mechanical loads. Therefore, the material chosen must have sufficient mechanical strength to handle the desired hydrogen pressure.
 +
 
 +
 
 +
3. Rigidity and Leakage
 +
 
 +
 
 +
The material selected must have sufficient rigidity to prevent unwanted deformation or leakage of the hydrogen tank.
 +
 
 +
 
 +
4. Surface Smoothness
 +
 
 +
 
 +
The surface of the material must be sufficiently smooth to avoid hydrogen buildup or leakage through small cracks in the surface of the material.
 +
 
 +
 
 +
5. Compatibility
 +
 
 +
 
 +
The material selected must be compatible with hydrogen and not cause harmful or damaging chemical reactions over long periods of time.
 +
 
 +
 
 +
6. Availability and Cost
 +
 
 +
 
 +
Material availability and manufacturing costs are also important factors to consider in selecting hydrogen tank materials. Materials that are generally available and affordable can be a more practical choice.
 +
 
  
 
It is important to note that no single material perfectly satisfies all of the above factors. Therefore, material selection should be based on careful assessment and taking into account the specific requirements of a specific hydrogen tank application.
 
It is important to note that no single material perfectly satisfies all of the above factors. Therefore, material selection should be based on careful assessment and taking into account the specific requirements of a specific hydrogen tank application.

Revision as of 07:17, 5 June 2023

Introduction

Muhammad Alif Kurniawan.jpg

Hello, nice to meet all of you and welcome to my page

My name is Muhammad Alif Kurniawan with NPM 2106732853

You can ask anything, lets going forward together

Definition of Hydrogen Tank

First of all, we will discuss a simple definition of a hydrogen tank, we can make a brief explanation about a hydrogen tank as follows :


A hydrogen tank is a specialized container designed to store hydrogen gas, either under high pressure or as a cryogenic liquid, for various applications such as fuel cell vehicles, power generation, and industrial processes. The tank's primary function is to safely store hydrogen until it is needed and then release it for use in the desired application. It is constructed using high-strength materials to withstand the pressure or low-temperature conditions required for hydrogen storage. The tank may incorporate safety features, insulation (in the case of cryogenic tanks), and fittings or valves for filling and dispensing hydrogen.


Liquid-hydrogen-tank.jpg Liquid-hydrogen-tank-01.jpg


After that, based on the assignment given on May 22, 2023. Every students are assigned to make an optimal design design for a hydrogen tank, for for the specifications that are used as constant variables in the production of hydrogen tanks can be seen below :


1. Has a capacity of 1 Liter

2. Operates at a pressure of 8 bar

3. Have a maximum production price of Rp. 500,000

Functionality of hydrogen Tank

Hydrogen tanks have been used in various ways, be it in everyday life or for other purposes, be it small scale to industrial scale. Here are the three main functionalities of a hydrogen tank:


A. Storage and Transport


Fuel-cell-vehicles-1.jpg


The main function of a hydrogen tank is to store and transport hydrogen gas safely. These tanks allow for the storage of significant amounts of hydrogen for use in applications such as fuel cell vehicles, power generation and industrial processes. By storing a sufficient amount of hydrogen, tanks allow efficient transportation from one location to another, allowing access to renewable energy sources in certain places.


B. Clean Energy Source


Hydrogen-vs-EV Shareable.jpg


Hydrogen is a clean energy source and can be used to reduce greenhouse gas emissions and air pollution. By using a hydrogen tank, energy stored in the form of hydrogen can be released and used to generate electricity via fuel cells, drive fuel cell vehicles, or meet industrial energy needs. Hydrogen tanks play an important role in providing access to an environmentally friendly and sustainable source of energy.


C. Integration with Energy Infrastructure


Hydrogen-zero-emission.jpg


Hydrogen tanks also work within the integration of a wider energy infrastructure. They can be connected to a hydrogen dispensing system which enables efficient refueling of fuel cell vehicles. In addition, hydrogen tanks can be integrated with existing energy storage networks and natural gas networks to provide energy reserves, offset fluctuations in supply and demand, and strengthen the stability of the energy system.


All in all, hydrogen tanks play an important role in storing, transporting and using hydrogen as a source of clean energy. They enable broader and more efficient access to hydrogen, assist in reducing emissions and support the transition to a low-carbon economy.

Advantages & Disadvantages of Hydrogen Tank

The use of hydrogen tanks as a fuel storage method certainly has some advantages and disadvantages. Here are some factors that can be considered in the hydrogen tank production process :


Fcto storage tree chart2.png


ADVANTAGES


1. Energy Sustainability


Hydrogen tanks allow for sustainable energy storage. Hydrogen can be produced from renewable energy sources, such as solar or wind power, through the electrolysis of water. By storing the generated energy in the form of hydrogen, the tank allows long-term storage and use of renewable energy when needed. This helps overcome the challenges of fluctuating energy supply and demand and enables the wider use of renewable energy.


2. High Energy Capacity


Hydrogen tanks have a very high energy capacity compared to conventional batteries. Relatively lighter in weight, a hydrogen tank can store more energy than a battery of the same capacity. This allows fuel cell vehicles to have a wider range and faster refueling times. In addition, the high energy capacity of hydrogen tanks also allows energy storage and use on a larger industrial scale.


3. Fast Charging Time


Filling a hydrogen tank can be done in a relatively short time. Compared to charging an electric battery which requires a longer time, filling a hydrogen tank can be comparable to filling a conventional fuel. This allows the use of fuel cell vehicles that are more comfortable and similar to fossil fuel vehicles. This fast charging time also contributes to efficiency and convenience in the use of hydrogen energy.


With energy sustainability, high energy capacity and fast filling times, hydrogen tanks are an attractive solution for energy storage and the use of hydrogen as a clean fuel. These advantages are helping to drive the adoption of hydrogen as a promising alternative in the transition to a more sustainable energy system.


DISADVANTAGES


1. High Pressure or Temperature


Hydrogen tanks used to store hydrogen in gaseous form usually require high pressure, reaching thousands of psi (pounds per square inch) to store sizable quantities. This requires a robust and high pressure resistant tank design, and creates a safety risk that must be managed with care. On the other hand, hydrogen tanks that store hydrogen as a cryogenic liquid require extremely low temperatures, below -253 degrees Celsius (-423 degrees Fahrenheit), which require additional insulation and infrastructure to maintain those low temperatures. Both of these can pose significant technical and cost challenges.


2. Storage Disadvantages


Although the energy capacity of hydrogen in a tank can be high, the energy stored in hydrogen has a disadvantage in terms of volume. Hydrogen has a low energy density when compared to fossil fuels such as gasoline or diesel. This means the hydrogen tank must be larger in size or heavier in order to store the same amount of energy compared to conventional fuels. Storage space-consuming can be a challenge in some applications, such as vehicles, where limited space is an important consideration.


3. Limited Infrastructure


Infrastructure for the production, storage and distribution of hydrogen is still limited and not fully developed as widely as fossil fuel infrastructure. This means limited access to hydrogen filling stations, lack of a distribution network, and lack of hydrogen production facilities can all become barriers to wider adoption of hydrogen-based technologies. Developing the infrastructure needed to support hydrogen tanks requires a large investment and takes a long time.


While hydrogen tanks have the advantage of being a sustainable energy storage, they also have some disadvantages that need to be addressed to drive wider adoption. Research and development is ongoing to address these challenges and improve the efficiency, safety and infrastructure associated with hydrogen tanks.

Mass Calculation

Hydrogen at a pressure of 8 bar has a boiling temperature of around -253.16° Celcius, therefore to be stable in liquid conditions a hydrogen tank with a lower temperature is needed. The total hydrogen mass in the tank cannot be determined using the ideal gas equation because the phase state possessed by hydrogen in the tank is liquid, while ideal gas will only function on the gas aspect. Therefore we will use the usual density equation which uses the density of liquid hydrogen in temperature -253.16° Celcius and and at a pressure of 0.8 MPa which is around 65.91 kg/m³.


M = ρV


Where:

M = Total Mass in kg

ρ = Density in kg/m³

V = volume in m³ (cubic meter)


With the above equation, the total mass is obtained as follows :


M = ρV

M = (65.91)(0.001)

M = 0.06591 kg

M = 65.91 gram


So, using this equation, the total mass of hydrogen in a tank with a volume of 1 liter, a pressure of 8 bar, and a temperature of -253.16°C is about 0.06591 kilograms.

Dimension Calculation

To get the dimensions of a hydrogen tank that can accommodate hydrogen gas as much as possible and use as little material as possible, there are calculations that need to be done Using calculus and numerical methods, we will find out the dimensions of a hydrogen tank that has the maximum volume and minimum surface area by using the cylinder volume equation as follows:


Volume = πr²h

V = πr²h

V/(πr²) = h


Then combining it with the equation for the surface area of the tube will get a new equation form, namely :


Surface Area = 2πr² + 2πrh

A = 2πr² + 2πrh

A = 2πr² + 2πr(V/(πr²))

A = 2πr² + 2V/r


Now, we need to find the minimum value of the surface area formula. We can use calculus to find the first and second derivatives of the formula.


d(A)/dr = 4πr - 2V/r²

d²(A)/dr² = 4π + 4V/r³


To find the minimum, we look for the point where the first derivative equals zero and the second derivative is positive (to confirm that it is a minimum value).


4πr - 2V/r² = 0

4πr = 2V/r²

2πr³ = V


To be sure, if we plug in the values we already got in the second derivative equation we will get the following values


d²(A)/dr² = 4π + 4V/r³

d²(A)/dr² = 4π + 4(2πr³)/r³

d²(A)/dr² = 4π + 8π

d²(A)/dr² = 12π (PROVEN POSITIVE)


To determine the relationship between the radius (r) and the height (h), we can use the initial volume equation


h = V/(πr²)

h = 2πr³/(πr²)

h = 2r


Using this equation, we will find the effective dimensions for a hydrogen tank with a volume capacity of 1 liter (1000 cm³) as follows :


V = πr²h

V = πr²(2r)

V = 2πr³

r³ = (V/2π)

r = (1000/2π)^(1/3)

r = 5.419 cm


Then for the height of the tube obtained


h = 2r

h = (2)(5.419)

h = 10.839 cm


Then the dimensions of the hydrogen tank to be used are (5.419 x 5.419 x 10.839) cm. This hydrogen tank will have a surface area of 553,581 cm³

Material Selection

When choosing a material for a hydrogen tank, there are several factors to consider. Some of the main factors to consider are:


1. Corrosion Resistance


Hydrogen has the ability to cause embrittlement or corrosion of some materials. Therefore, it is important to choose a material that has good resistance to hydrogen corrosion.


2. Mechanical Strength


Hydrogen tanks must be able to withstand high pressures and withstand mechanical loads. Therefore, the material chosen must have sufficient mechanical strength to handle the desired hydrogen pressure.


3. Rigidity and Leakage


The material selected must have sufficient rigidity to prevent unwanted deformation or leakage of the hydrogen tank.


4. Surface Smoothness


The surface of the material must be sufficiently smooth to avoid hydrogen buildup or leakage through small cracks in the surface of the material.


5. Compatibility


The material selected must be compatible with hydrogen and not cause harmful or damaging chemical reactions over long periods of time.


6. Availability and Cost


Material availability and manufacturing costs are also important factors to consider in selecting hydrogen tank materials. Materials that are generally available and affordable can be a more practical choice.


It is important to note that no single material perfectly satisfies all of the above factors. Therefore, material selection should be based on careful assessment and taking into account the specific requirements of a specific hydrogen tank application.