1. LITERATURE REVIEW
Carbon footprint assessment
Balancing the carbon emissions and keeping in pace with progressive growth is a challenge faced by developing economies like India. By 2030, the world’s population in cities will be consuming 73% of world energy, which accounts for 70% of CO2 emissions. Building construction and usage consumes one-third of the primary electricity in India (Agency, 2009). Embodied energy and carbon is also a topic of rising importance. In fact, it is normally possible to reduce the embodied energy and carbon of a building or construction project by 10-20% without adding to the build cost. It is often 20-50% of the whole life (embodied + operational) carbon emissions of a new building. (CircularEcologyLtd, 2015).
Carbon footprint is the total amount of land area required to assimilate the amount of CO2 produced by a mankind during its life time, this may include systems, process, operations and maintenance (Wackernagel, 1996).The present concept of carbon footprint is taken as life cycle impact category indicator for global warming potential (Finkbeiner,2009). Significant factors that affect the carbon emission include population, energy efficiency, energy structure and the model and scale of the economic development (Yi Binga, 2011).
Dumfries and Galloway College (Lisa Gibson, 2010) conducted a detailed carbon footprint assessment starting with baseline calculations through detailed building audit that includes both energy audits and water audits to come up with some recommendations for the emission reduction.
Significant studies in this field include integrated energy mapping process for transportation in the city of Barrie, which allows the community to evaluate various types of energy scenarios ...
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The three case studies related to the building energy consumption, energy mapping and energy efficiency can be combined together to get a new approach for energy management. Though the case 1 conveyed more about the calculation of energy consumption in a building, the methodology was so vast to follow when many BIM software are available to do the same in much easier way. Application of this energy calculation of individual building into a large scale analysis i.e. to an educational campus through energy mapping was showed in the case 2. The GIS platform used for this purpose could be applied to create much more comprehensive maps and management opportunities. Case 3 showed the variation in the energy consumption due to the different alternatives for wall materials or glazing etc. Here the use of BIM became an important component for getting the final results.
LEED, or Leadership in Energy & Environmental Design, is a certification program for green buildings with stringent requirements for building energy efficient and environmentally responsible structures. Some requirements of this program include specific building materials, smart grid capable, gray water reclamation systems, green space minimums, high levels of insulation and low thermal transfer glass (US Green Building Council). Green buildings are a must if we are to sustain our current level of growth. Despite the higher initial cost of these buildings, the long term energy savings make these buildings a smarter choice for
The emission of carbon dioxide has contributed to 80% to the heating of the earth atmosphere. Carbon dioxide is produced due the burning of fossil fuels such as natural gas, coal and oil. The burning of fossil fuel is very important in our society today, because it is used for cooking, used to produce electricity, for heating, for cooling and also for transportation. The industrialization has led to the use of fossil fuel for running machines and driving cars. The building of fossil fuel contributes towards 80-90% of the carbon dioxide we find in our atmosphere today. When the ecosystems are altered and vegetation is either burned or took out, the carbon stored in them is relinquished to the atmosphere as carbon dioxide (What causes global climate change, 2005). Methane is another gas being produced in the process which all have served to increase the greenhouse effect in our atmosphere. Methane is produced from the cultivation of rice, from the burning of coal and from cattle, it has increased by 145% due to human
One starting point to reducing the amount of greenhouse gases that you release is to find your carbon footprint. The carbon
When people burn fossil fuels to accumulate and produce energy a substance called carbon is produced. Carbon is released into the air in a form known as carbon dioxide. Carbon moves throughout the biosphere on the planet as it is recycled and reused. Carbon exists in the earth’s atmosphere in two common forms which are methane and carbon monoxide. These gases absorb and retain heat in a process known as the greenhouse effect. The Planets natural greenhouse effect makes life possible by regulating our temperature. It turns out that adding too much to the greenhouse effect can have horrible consequences on the environment. Each year, five and a half billion tons of carbon is released by burning fossil fuels and of that three billion tons enters the atmosphere. The remaining carbon usually gets absorbed by the oceans.
There is no hesitation when it comes to whether humans impact the global environment. However, it is questioned in whether human’s ecological footprint is either negatively or positively impacting. In clear perspective, humans share from both sides and their ecological footprint is noted towards whether it will benefit or harm the environment around them. Topics such as overpopulation, pollution, biomagnification, and deforestation are all human impacted and can harm the environment, but some include benefits into helping the world around us with solutions to their problems.
As the environmental problems become more and more serious these years, especially that intense negative impact that buildings in modern cities bring to the cities, the concept of Green Building is being more and more important considered by local and federal government. According to the U.S. Green Building Council (USGBC), a green building is one that utilizes design and construction practices that significantly reduce or eliminate the negative impact of buildings on the environment and the building's occupants. Besides the more and more advanced building structure and technology, the main goal of green building is to protect the health of the occupants, save energy and reduce pollution to environment. There are many certifications of green buildings to judge whether the building meets the standard of green buildings and what environmental performance level is this building at, to help government regulators, building professionals and consumers to see better how this building can be improved and what is its impact on human beings and environment. Such green building programs include Leadership in Energy and Environmental Design (LEED), Environmental Protection Agency's Energy Star program, National Association of Home Builders (NAHB Green), etc. Among them, LEED is one of the most popular certification programs that give the building credits for its environmental performance. In this essay, I will discuss the costs and benefits of different types of building projects that were certified by LEED.
Humans and animals breathe out Carbon Dioxide, often referred to as the greenhouse gas, as a waste product. Plants take in this CO2 and use it to make food. This is called photosynthesis. During this process oxygen is released which is then breathed in by humans and animals. This procedure is repeated over and over and a natural balance is obtained. However this natural balance is disrupted by human activity. People of the world are putting more than 5.5 billion tons of CO2 into the atmosphere every year. 75% of this is caused from the burning of fossil fuels. These fuels are burnt all the time to run factories, power plants and vehicles. The main sources of CO2 emissions are electric utilities, residential buildings, industry and transportation. The other 25% is induced by the destruction of the world's forests. The reason for this is that there are less trees and plants to take in the CO2 but there is just as many, if not more, humans and animals to breathe it out.
The commonly debated “greenhouse effect” refers to “the global average temperature increase that has been observed over the last one hundred years or more” (Spencer). President Barack Obama addressed the issue in an effort to highlight its severity, "We have to all shoulder the responsibility for keeping the planet habitable, or we’re going to suffer the consequences – together” (Leader). The earth’s increasing atmospheric and oceanic temperatures result in climate changes due to cumulative amounts of carbon dioxide (CO2) in the atmosphere. As an outcome, researchers around the globe have established that the by-product of burning fossil fuels is the main culprit of the increasing temperatures. Global carbon emissions from fossil fuels have significantly increased since 1900, as shown above from a study carried out by the Carbon Dioxide Information Analysis Center.
"China Plans to Regulate Some of Its Carbon Emissions for the First Time Ever." Smithsonian. N.p., n.d. Web. 15 May 2014.
Implementation of green concepts has been significant not only in design engineering but also in construction. Therefore the knowledge about green design has been a very important fact for the sustainable development in civil engineering. Concepts such as green buildings, carbon foot print, ecological foot print and LEED rating system have helped to achieve sustainable development for civil engineering
Every day the world around us is changing ever so slightly in many different ways. Humans can affect the environment through our day to day lifestyle without even noticing the change. An ecological footprint is a measurement of how much a person uses the environment around them to live their life. This given measurement can help one to see their impact on the earth. It is an important tool to understand what actually a human does to change the habitat near them. My ecological footprint results gave me a perspective of how my daily life can impact the world I live in, as well as, how I as an individual can change my actions to make less waste on earth. It is also useful for each person to know their own ecological footprint since no one live
This is a Green Building Rating System that accelerates and encourages worldwide adoption of green buildings in addition to...
Sustainable buildings are becoming somewhat of a necessity in the world today. As the demand for green building develops, so does the demand for green building materials. Just as the old techniques and building materials seem to disappear in the assembly of things, they are now making a come back. Green building focuses on the efficiency of major resources like water and energy. As the cost for sustainable materials and products are on the decline, building green seems to be the most cost effective kind of design and construction. Looking specifically at green materials and their impact on the production of structures, it is evident that they are a prime choice for building material. The use of green materials should be promoted because they are better for the environment, more healthful for the consumer, and better for the economy.
Buildings consume a variety of materials in their construction. Green design reduces the dependence on resource intensive products and materials. Today, there are an increasing number of products available made from efficient, earth-friendly, or recycled materials. In a green building, consideration is also given to the construction process itself. Materials that minimize waste or can be recycled, help contribute to an efficient and environmentally sensitive construction process.
Preliminary Assessment requires sufficient research, huge amount of data, experts advice on impacts of project, extent of impacts and briefly evaluate the importance to decision makers.