Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| report [2016/06/11 09:09] – [7.5 Electronics overview] team5 | report [2017/04/29 17:25] (current) – [7.4 Thermodynamics] team5 | ||
|---|---|---|---|
| Line 15: | Line 15: | ||
| ===== Acknowledgement | ===== Acknowledgement | ||
| - | In this paragraph, the authors would like to thank the supervisors and teachers from the European Project Semester at Instituto Superior de Engenharia do Porto. Their patience, guidance and great help strengthened the authors’ capacity to fulfill the project. Special gratitude for our main supervisors Cristina Ribeiro and Paulo Ferreira. This European Project Semester enriched all authors by culture, teamwork and team bonding. | ||
| + | |||
| + | The authors would like to thank the supervisors and teachers from the European Project Semester at Instituto Superior de Engenharia do Porto. Their patience, guidance and great help strengthened the authors’ capacity to fulfill the project. | ||
| ===== Glossary ===== | ===== Glossary ===== | ||
| <WRAP box 400px> | <WRAP box 400px> | ||
| ^ Abbreviation ^ Description ^ | ^ Abbreviation ^ Description ^ | ||
| + | |AAWRE|American Academy of Water Resources Engineers| | ||
| |DFA|Dimensional Fund Advisors| | |DFA|Dimensional Fund Advisors| | ||
| |DCMD|Direct Contact Membrane Distillation| | |DCMD|Direct Contact Membrane Distillation| | ||
| Line 30: | Line 32: | ||
| |MED|Multiple-Effect Distillation| | |MED|Multiple-Effect Distillation| | ||
| |MSF|Multi-stage Flash Distillation| | |MSF|Multi-stage Flash Distillation| | ||
| + | |NA| Not Applicable| | ||
| |RO|Reverse Osmosis distillation| | |RO|Reverse Osmosis distillation| | ||
| |SHD|Simple Homemade Desalination| | |SHD|Simple Homemade Desalination| | ||
| Line 1237: | Line 1240: | ||
| Our team set the price of our product is 149.9 € by applying " | Our team set the price of our product is 149.9 € by applying " | ||
| ==== - Strategy Control ==== | ==== - Strategy Control ==== | ||
| - | Marketing control is an important function of marketing. Using suitable controls, any omission in marketing and plans could be detected and corrected to direct it towards the marketing objectives and goals. Marketing control provides the means of testing whether desired goals and results are actually being achieved or not. Control involves measurement, | + | Marketing control is an important function of marketing. Using suitable controls, any omission in marketing and plans could be detected and corrected to direct it towards the marketing objectives and goals. Marketing control provides the means of testing whether desired goals and results are actually being achieved or not. Control involves measurement, |
| ) | ) | ||
| Line 1266: | Line 1269: | ||
| ===== - Eco-efficiency Measures for Sustainability ===== | ===== - Eco-efficiency Measures for Sustainability ===== | ||
| - | // | + | |
| - | // | + | |
| ==== - Introduction ==== | ==== - Introduction ==== | ||
| Line 1273: | Line 1275: | ||
| Nowadays the Sustainability is seen as a global concept. Water resources are a key element in sustainable development, | Nowadays the Sustainability is seen as a global concept. Water resources are a key element in sustainable development, | ||
| - | // | ||
| - | // | ||
| ==== - Sustainable development ==== | ==== - Sustainable development ==== | ||
| Line 1311: | Line 1311: | ||
| * Improve the economic and ecological efficiency [(Sustainability_main_elements)]. | * Improve the economic and ecological efficiency [(Sustainability_main_elements)]. | ||
| - | // | ||
| - | // | ||
| ==== - Environmental ==== | ==== - Environmental ==== | ||
| Line 1349: | Line 1347: | ||
| * Select recyclable materials for the product design. Give me 5 will choose materials that can be reused and recycled with the lowest cost, taking into account which are the best for the design. The goal is to develop a product in the most efficient way that possible, and reduce the non-environmental product quantity used. | * Select recyclable materials for the product design. Give me 5 will choose materials that can be reused and recycled with the lowest cost, taking into account which are the best for the design. The goal is to develop a product in the most efficient way that possible, and reduce the non-environmental product quantity used. | ||
| - | // | + | |
| - | // | + | |
| ==== - Economical ==== | ==== - Economical ==== | ||
| Economic sustainability is the most elusive component of the triple bottom line approach. There is a universal consensus that businesses must be economically sustainable: | Economic sustainability is the most elusive component of the triple bottom line approach. There is a universal consensus that businesses must be economically sustainable: | ||
| Line 1370: | Line 1367: | ||
| The aim is to create a desalination plant for a dome, focusing on economic development and environmental protection simultaneously. The team will achieve this goals by choosing the materials and methods of production that are more adequate, taking in count the relation between price and quality. | The aim is to create a desalination plant for a dome, focusing on economic development and environmental protection simultaneously. The team will achieve this goals by choosing the materials and methods of production that are more adequate, taking in count the relation between price and quality. | ||
| - | ?????????? | + | The Pyramid water is economically sustainable because |
| - | // | + | |
| - | // | ||
| ==== - Social ==== | ==== - Social ==== | ||
| - | Social Sustainability is defined as “//the ability of a community to develop processes and structures which not only meet the needs of its current members, but also support the ability of future generations to maintain a healthy community [(Social_Sustainability)]. | + | Social Sustainability is defined as “//the ability of a community to develop processes and structures which not only meet the needs of its current members, but also support the ability of future generations to maintain a healthy community"// |
| The product has to be compliant with the customers needs. The keywords for this aspect of sustainability are social justice and human dignity. | The product has to be compliant with the customers needs. The keywords for this aspect of sustainability are social justice and human dignity. | ||
| Line 1385: | Line 1380: | ||
| Finally, the team has gotten the users. A familiar relation with the users helps to ensure a strong union between them and the company. The company is not only about selling and making a profit, it's about satisfying the user's needs. User service well implemented with social skills and helping with our eco-friendly product provides a better user company relation. | Finally, the team has gotten the users. A familiar relation with the users helps to ensure a strong union between them and the company. The company is not only about selling and making a profit, it's about satisfying the user's needs. User service well implemented with social skills and helping with our eco-friendly product provides a better user company relation. | ||
| - | ?????????? | + | The Pyramid water is environmentally socially because |
| - | // | ||
| - | // | ||
| ==== - Life Cycle Analysis ==== | ==== - Life Cycle Analysis ==== | ||
| A life Cycle Analysis is the analysis of a product system for assessing the potential environmental aspects and potential aspects associated with a product by undertaking four steps: compiling an inventory of relevant inputs and outputs, evaluating the potential environmental impacts associated with those inputs and outputs and interpreting the results of the inventory and impact phases in relation to the objectives of the study. | A life Cycle Analysis is the analysis of a product system for assessing the potential environmental aspects and potential aspects associated with a product by undertaking four steps: compiling an inventory of relevant inputs and outputs, evaluating the potential environmental impacts associated with those inputs and outputs and interpreting the results of the inventory and impact phases in relation to the objectives of the study. | ||
| - | // | + | // ISO 14040.2 Draft: Life Cycle Assessment - Principles and Guidelines |
| - | - ISO 14040.2 Draft: Life Cycle Assessment - Principles and Guidelines | + | |
| Figure {{ref> | Figure {{ref> | ||
| Line 1489: | Line 1481: | ||
| - | // | + | |
| ==== - Conclusion ==== | ==== - Conclusion ==== | ||
| - | //As a resume, the goals are must be eco-friendly and energy independent by only using the energy of the sun, it has to provide the energy to work. The team has a strong value of environmental aspect, however, it has to work on economic and social aspects too, to allow the Water pyramid | + | As a resume, the goals are must be eco-friendly and energy independent by only using the energy of the sun, it has to provide the energy to work. The team has a strong value of environmental aspect, however, it has to work on economic and social aspects too, to allow the Water pyramid |
| The team gives a high value on this topic. The sea water users will use, must be turned into purified water to make sure the clients have access too use it. | The team gives a high value on this topic. The sea water users will use, must be turned into purified water to make sure the clients have access too use it. | ||
| Also the team can use the salt extracted from the sea water, to use it to cook, or other utilities. The salt is a common product, and it can be got while the system obtain purified water, without wasting energy, non producing any pollution, and any additional cost to the process. | Also the team can use the salt extracted from the sea water, to use it to cook, or other utilities. The salt is a common product, and it can be got while the system obtain purified water, without wasting energy, non producing any pollution, and any additional cost to the process. | ||
| - | // | + | |
| ===== - Ethical and Deontological Concerns ===== | ===== - Ethical and Deontological Concerns ===== | ||
| ==== - Introduction ==== | ==== - Introduction ==== | ||
| - | // | + | |
| In this part, the Ethical and Deontological Concerns of our project are exposed. [(Ethics)] | In this part, the Ethical and Deontological Concerns of our project are exposed. [(Ethics)] | ||
| Line 1516: | Line 1507: | ||
| * Liability / Responsibilities | * Liability / Responsibilities | ||
| - | .// | + | |
| ==== - Engineering Ethics ==== | ==== - Engineering Ethics ==== | ||
| - | // | + | |
| Engineering ethics is about the rules of engineering ethics that you always have to apply in a project. Beeing an engineer means to have responsibilities. Their decisions impact the environment, | Engineering ethics is about the rules of engineering ethics that you always have to apply in a project. Beeing an engineer means to have responsibilities. Their decisions impact the environment, | ||
| Line 1556: | Line 1547: | ||
| During all the different steps of the project, all the team will respect this engineering code of ethics, but some points are more important than others for this project. | During all the different steps of the project, all the team will respect this engineering code of ethics, but some points are more important than others for this project. | ||
| - | // | + | |
| ==== - Sales and Marketing Ethics ==== | ==== - Sales and Marketing Ethics ==== | ||
| - | // | + | |
| Sales and Marketing ethics is about the relation ship between the company and the clients. Nowadays, a lot of company are so interesting by making profit and winning money that they stop respecting their clients. In other words, they used the trust of their clients and advertising to dupe them and their rights. This selfish principle maybe increase at the beginning the sales but at the end that enrole the lost of credibility of the company and the dissatisfaction of the client. Moreover false advertising or disclosure of risks can be dangerous. | Sales and Marketing ethics is about the relation ship between the company and the clients. Nowadays, a lot of company are so interesting by making profit and winning money that they stop respecting their clients. In other words, they used the trust of their clients and advertising to dupe them and their rights. This selfish principle maybe increase at the beginning the sales but at the end that enrole the lost of credibility of the company and the dissatisfaction of the client. Moreover false advertising or disclosure of risks can be dangerous. | ||
| Line 1568: | Line 1559: | ||
| Moreover, « Give me 5 » took the decision of establishing the price according to ethic considerations. The prices are not fixed yet, but the profit of the company will be chosen according to the work provided for the project, the price of the raw materials, and the clients. To resume, the company will make profit of the system, but not an unreasonable profit. The goal of the group is not to make profits of others but help the people to access to clean water. The price will be fair, rewarding the work supplied and allowing people to buy it. | Moreover, « Give me 5 » took the decision of establishing the price according to ethic considerations. The prices are not fixed yet, but the profit of the company will be chosen according to the work provided for the project, the price of the raw materials, and the clients. To resume, the company will make profit of the system, but not an unreasonable profit. The goal of the group is not to make profits of others but help the people to access to clean water. The price will be fair, rewarding the work supplied and allowing people to buy it. | ||
| - | // | + | |
| ==== - Academic Ethics ==== | ==== - Academic Ethics ==== | ||
| - | // | + | |
| Academic ethics is about respect and honesty in your work. It worries that people steal the ideas or sentences of other and used them as it own. This practises are unfair, not respectable and should be banned. At the opposite, if you respect your sources always declaring them, you can enrich your work and putting forward the work of other people through your project. | Academic ethics is about respect and honesty in your work. It worries that people steal the ideas or sentences of other and used them as it own. This practises are unfair, not respectable and should be banned. At the opposite, if you respect your sources always declaring them, you can enrich your work and putting forward the work of other people through your project. | ||
| Line 1580: | Line 1571: | ||
| According to this principle, the conclusion id that the project doesn' | According to this principle, the conclusion id that the project doesn' | ||
| - | // | + | |
| ==== - Environmental Ethics ==== | ==== - Environmental Ethics ==== | ||
| - | // | + | |
| Environmental ethics is about the relationship between humans and environment. It worries that men do not conflict with the development and evolution of natural beings. Indeed, all the product has a certain impact on the environment and it’s essential to manage and decrease this impact for the well-being of the next generations and the planet. Human projects have to be always in accordance with the nature instead of damage it. | Environmental ethics is about the relationship between humans and environment. It worries that men do not conflict with the development and evolution of natural beings. Indeed, all the product has a certain impact on the environment and it’s essential to manage and decrease this impact for the well-being of the next generations and the planet. Human projects have to be always in accordance with the nature instead of damage it. | ||
| Line 1809: | Line 1800: | ||
| The shape of the structure is based on previous research. | The shape of the structure is based on previous research. | ||
| - | The full structure can be seen in Figure {{ref> | + | The full structure can be seen in Figure {{ref> |
| <WRAP centeralign> | <WRAP centeralign> | ||
| Line 1979: | Line 1970: | ||
| Parameters for the calculations: | Parameters for the calculations: | ||
| * H0 : Convection of heat transfer coefficient from cover surface to atmosphere | * H0 : Convection of heat transfer coefficient from cover surface to atmosphere | ||
| - | | + | |
| - | * Ta : Temperature of atmosphere | + | * Ta : Temperature of atmosphere |
| - | * σ : Constant of Stefan-Boltzmann | + | * σ : Constant of Stefan-Boltzmann |
| - | * ec : emissitivity | + | * ec : Emissivity |
| * Hi : Convection of heat transfer coefficient from seawater container to cover surface | * Hi : Convection of heat transfer coefficient from seawater container to cover surface | ||
| * Tb : Temperature of seawater in basin | * Tb : Temperature of seawater in basin | ||
| - | * Eb,c : Emissivity factor for radiation from seawater to cover | + | * Eb,c: Emissivity factor for radiation from seawater to cover |
| * D : Distillate outflow rate (kg/m/m²) from base | * D : Distillate outflow rate (kg/m/m²) from base | ||
| - | * λ : Enthalpy of condensation of water vapor is 2264 KJ/Kg | + | * λ : Enthalpy of condensation of water vapor is 2264 kJ/kg |
| - //Energy balance around the cover of the distiller and surrounding// | - //Energy balance around the cover of the distiller and surrounding// | ||
| - | Q= Ho . Ac | + | Q= Ho * Ac * (Tc – To) + σ * e * Ac (Tc4 – To4) (1) |
| Convection | Convection | ||
| - | Ho . Ac | + | Ho * Ac * (Tc – To) (2) |
| Radiation | Radiation | ||
| - | σ . e . Ac (Tc4 – To4) (3) | + | σ * e * Ac (Tc4 – To4) (3) |
| - //Energy balance around the cover of the distiller and the inside of the system// | - //Energy balance around the cover of the distiller and the inside of the system// | ||
| - | Q= Ho . Ac | + | Q= Ho * Ac * (Tb – Tc) + σ * e * Ac (Tb4 – Tc4) + D * λ + I * αc (4) |
| Convection | Convection | ||
| - | Hi . Ac . (Tb – Tc) (5) | + | Hi * Ac * (Tb – Tc) (5) |
| Radiation | Radiation | ||
| - | | + | |
| Assumptions are taken for the calculations. The area of the seawater container, white base and cover stays equal. The cover and condensate film are at a temperature of Tc, the temperature Tb is uniform throughout the basin, liquid and vapor leakage is negligible and the cover condensate are opaque to thermal radiation from the seawater container. Over-all energy balance around 1m² of distiller is: | Assumptions are taken for the calculations. The area of the seawater container, white base and cover stays equal. The cover and condensate film are at a temperature of Tc, the temperature Tb is uniform throughout the basin, liquid and vapor leakage is negligible and the cover condensate are opaque to thermal radiation from the seawater container. Over-all energy balance around 1m² of distiller is: | ||
| Line 2014: | Line 2005: | ||
| I(1-εr) = H0 (Tc – Ta ) + σ . ec. Ac (Tc4 – Tr4) +D (Tc – Ts) + B (Tb – Ts ) + Σ L (7) | I(1-εr) = H0 (Tc – Ta ) + σ . ec. Ac (Tc4 – Tr4) +D (Tc – Ts) + B (Tb – Ts ) + Σ L (7) | ||
| - | * I : Solar radiation rate on horizontal surface [W/m2 ] | + | * I : Solar radiation rate on horizontal surface [W/m²] |
| * R: Loss of solar energy by reflection | * R: Loss of solar energy by reflection | ||
| * B: water outflow rate | * B: water outflow rate | ||
| Line 2020: | Line 2011: | ||
| In this equation the solar radiation absorbed in the seawater container and on the distiller bottom per hour is equated to the sum of the heat transferred from the cover to the atmosphere by convection and radiation, the sensible heat carried out in the hot seawater and the warm condensate and heat losses, including the heat transferred through the bottom of the basin. The energy balance is written with the incoming saline water at the reference temperature and there is a further assumption that the condensate leaves the distiller substantially at the cover temperature. | In this equation the solar radiation absorbed in the seawater container and on the distiller bottom per hour is equated to the sum of the heat transferred from the cover to the atmosphere by convection and radiation, the sensible heat carried out in the hot seawater and the warm condensate and heat losses, including the heat transferred through the bottom of the basin. The energy balance is written with the incoming saline water at the reference temperature and there is a further assumption that the condensate leaves the distiller substantially at the cover temperature. | ||
| - | |||
| - | |||
| === - Practical concerns === | === - Practical concerns === | ||
| The efficiency of the process relies on the mass of condensated water [kg/m³]. This can be calculated by | The efficiency of the process relies on the mass of condensated water [kg/m³]. This can be calculated by | ||
| - | ∆m= - ∆es/ | + | ∆m = - ∆es/ |
| With es is the difference of water vapor pressure of the highest and the lowest temperature [bar]; | With es is the difference of water vapor pressure of the highest and the lowest temperature [bar]; | ||
| - | Rv is the gas constant of water vapor [461.5 J (K Kg)-1]; | + | Rv is the gas constant of water vapor [461.5 J (K.kg)-1]; |
| And the temperature at the lowest value [K] | And the temperature at the lowest value [K] | ||
| - | es = 6.1078 | + | es = 6.1078 |
| with T [°C] | with T [°C] | ||
| The difference of water vapor pressure also can be calculated by the difference of Relative Humidity inside the system by: | The difference of water vapor pressure also can be calculated by the difference of Relative Humidity inside the system by: | ||
| - | RH = (e/ | + | RH = (e/ |
| The e is the real vapor pressure inside the system | The e is the real vapor pressure inside the system | ||
| === - Water Pyramid Test Result === | === - Water Pyramid Test Result === | ||
| - | Once the prototype was ready the team made some tests during 2h on the roof of the ISEP: | + | Once the prototype was ready the team made measured |
| - | * Temperature on the Arduino Board: [45,89 ; 53,11] °C | + | * Temperature on the Arduino Board: [45.89;53.11] °C |
| - | * Pression on the Arduino Board: [1004,79 ; 1006,11] hPa | + | * Pression on the Arduino Board: [1004.79;1006.11] hPa |
| - | * Temperature inside the brine, on the inside wall and outside wall of the pyramid, Figure {{ref> | + | * Temperature inside the brine, on the inside wall and outside wall of the pyramid |
| - | * Humidity inside the pyramid | + | * Relative |
| <WRAP centeralign> | <WRAP centeralign> | ||
| Line 2053: | Line 2042: | ||
| </ | </ | ||
| - | * Humidity inside the pyramid, figure | + | * Humidity inside the pyramid |
| + | |||
| + | This test was made to ensure the big difference between the temperature of the inside of the pyramid, the outside of the pyramid and the brine itself. In Figure {{ref> | ||
| <WRAP centeralign> | <WRAP centeralign> | ||
| Line 2061: | Line 2052: | ||
| </ | </ | ||
| </ | </ | ||
| + | |||
| + | The Relative Humidity stays constant at approximately 60 % inside of the pyramid (Figure {{ref> | ||
| + | |||
| + | After this test, another test of 24 h was made. This for two reasons: | ||
| + | |||
| + | The results of the graph in Figure {{ref> | ||
| + | |||
| + | <WRAP centeralign> | ||
| + | <figure flabel7771> | ||
| + | {{:: | ||
| + | < | ||
| + | </ | ||
| + | </ | ||
| + | |||
| + | |||
| + | With the results of the graphs it possible to calculate the percentage evaporated water. | ||
| + | - Es1 = 122.21 = 6.1078 * 10 ^(7.5 * Tmaxbrine/ (237.9+Tmaxbrine)) | ||
| + | - Es2 = 20.41 = 6.1078 * 10 ^(7.5 * Tminbrine/ (237.9+Tminbrine)) | ||
| + | - ∆Es = 101.80 = Es1-Es2 | ||
| + | - ∆m = 0.012 kg = Tmin inside/ | ||
| + | - Water evaporated = 12.75 ml = ∆m * 1000 ml/kg | ||
| + | - % evaporated = 6.37 % | ||
| + | In this experiment only 6.37 % evaporated. To increase the percentage evaporated, it is important to make the higher difference between the temperature. In future development it is necessary to take this in consideration. | ||
| + | |||
| + | |||
| + | |||
| ==== - Electronics overview ==== | ==== - Electronics overview ==== | ||
| To make the Water Pyramid autonomous, an electronic system must be integrated. The Arduino intelligence will be used to control 1 pump and 4 sensors like you can see in the following blackbox in Figure {{ref> | To make the Water Pyramid autonomous, an electronic system must be integrated. The Arduino intelligence will be used to control 1 pump and 4 sensors like you can see in the following blackbox in Figure {{ref> | ||
| Line 2212: | Line 2229: | ||
| In this chapter the team has written about the ways of how the team managed to develop the ideas of this project. THe changes of the product and the system were explained, tested and discussed over the time. Based on test results, material is chosen and making the electrical schematic for our project makes the whole process easier and more user-friendly. | In this chapter the team has written about the ways of how the team managed to develop the ideas of this project. THe changes of the product and the system were explained, tested and discussed over the time. Based on test results, material is chosen and making the electrical schematic for our project makes the whole process easier and more user-friendly. | ||
| - | ===== - Conclusions ===== | ||
| - | |||
| - | Just making product through establishing a theme for a product, recording the process, and building physical models by using data from experiment does not mean end everything. Our product will be improved constantly for getting better conditions and our team will obtain feedback from customers and supervisors. In this unit, we mention about overall discussion of our product, and consider about future development for reaching more complete conclusions about the project and product. | ||
| Line 2223: | Line 2237: | ||
| - | Just making product through establishing | + | This chapter comprises |
| ==== - Discussion ==== | ==== - Discussion ==== | ||
| - | When our team proceeds the project at first time, we target | + | At first, the target |
| + | |||
| + | The prototype has to satisfy the users’ needs in terms of sustainability and marketing, with the help of management and ethics. | ||
| - | After admitting feedback from supervisors and doing experiments, | ||
| - | ==== - Future Development ==== | + | When everything was designed in the right way, the scientific part had to be checked. This means studying the thermodynamic reactions through the system. These test proved the prototype is working but needs improvements, |
| - | First of all, our product focuses on sustainability | + | As a team, we are proud of what we achieved |
| - | Secondly, precise calculations. We will struggle with getting | + | |
| - | + | ||
| - | + | ||
| - | ===== - References ===== | + | |
| + | ==== - Future Development ==== | ||
| - | [2] http:// | + | Regarding the future, several factors of the product can be improved. |
| - | [3] https:// | + | First of all, more test about materials can be done do guaranty a sustainable, low cost and efficient system. |
| - | [4] How Much Water is On Earth?, 2010,http://www.livescience.com/ | + | Next the electronical |
| - | [5] Project Porposal EPS, ISEP, 2016, http://ave.dee.isep.ipp.pt/ | + | And last but not least, more thermodynamical experiments should be done to ensure at which conditions the system works best. |
| - | [6] Evaporation, | + | |
| - | [7] http:// | + | |
| - | [8] http:// | + | |
| - | + | ||
| - | Project development | + | |
| - | Ethics : http:// | + | |
| - | http:// | + | |
| - | http:// | + | |
| - | https:// | + | |
| ==== References ==== | ==== References ==== | ||