Contact Us
Sign In / Sign Up for FREE
Go to advanced search...

3-D heat transfer - Essay Example

Comments (0) Cite this document
Glass is one of the major construction materials, and it is necessary to understand its behaviour under different conditions that it might have to face in service. One of the most common hazards faced in buildings is fire. …
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.6% of users find it useful
3-D heat transfer
Read TextPreview

Extract of sample "3-D heat transfer"

Download file to see previous pages Glass is one of the major construction materials, and it is necessary to understand its behaviour under different conditions that it might have to face in service. One of the most common hazards faced in buildings is fire. It is vital to know the behaviour of glass in case of a fire, so that we can understand what should be done to improve its performance It also helps us learn the length of time that glass can sustain before softening. This gives important information about rescue and emergency time frame for a building on fire. To understand the behaviour of glass in case of a fire, we need to model the heat transfer from the fire to the glass and the temperature distribution over the surface of the glass, as temperature is the main determinant of the properties of glass. Models can be simulated in 3 dimensions or in one dimension. Both will vary in complexity as well as in the accuracy of the results that they produce. The discussion ahead focuses on the difference between the two types of models, the complexities involved, the requirements for solution and the viability of using each of the two models, starting first with the 3-d model and then the 1-d model. The 3 dimensional heat transfer model is easy to imagine physically. The same, though, cannot be said about its modelling. The ease of the physical imagination is only because we can see it happen and sense all the variables. There are tens of variables, all of which cannot be understood mathematically, and thus have to be inculcated into the system as constants with inherent limitations. Before discussing the limitations, however, we shall start right at the basics of what makes a heat transfer model in such a situation and what variables are involved. The identification of the variables can be made easier by breaking the model down into different physical zones, such as the fire, the glass itself, and the medium in between the two. These will be discussed separately to identify determinants of heat transfer model. Fire is not a point source of light and heat; rather it is a big varying volume which can be thought of as multiple point sources. In terms of heat transfer, we are interested in the intensity of the radiation being emitted from the fire. Due to the variation of the intensity from point to point in the fire, we can express radiation as a function of position in space. This function though, changes from time to time as well, because the fire radiation intensity at one point does not remain the same at that point as time changes. Thus, we have to take fire radiation intensity as a function of time and spatial position. The previous discussion complicates mathematical interpretation in terms of modelling as the dependent parameters seem too independent and unpredictable. To resolve that issue, we have to understand that the fire radiation intensity at one point in space at a certain instant has a bearing on adjacent points in space at adjacent instants in time. Similarities to this property of fire can be found in fluid behaviour, suggesting that fire can be modelled as a fluid radiating heat. The continuity equation is the basis of modelling such a situation involving fluid flow. The problem of radiation and heat transfer is addressed by the heat equation, of course. Three dimensional dependency of fluid flow has to be taken into account in the form of partial differentials. As has already been discussed, the variable of time is involved as well. There are different methods of modelling fire as a point source, a group of point sources, block models and their variations. All these models have their limitations and advantages and these should be kept in mind. The heat that flows from the fire to the glass has to pass through a medium. Common sense suggests that the medium is, in most cases, air. But, due to the fire, smoke collects in the enclosed space as well. This changes the viscosity, absorptivity, conductivity and density of the medium drastically. Also, the heat flow is not only through the conductivity based heat equation, but ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“3-D heat transfer Essay Example | Topics and Well Written Essays - 1250 words”, n.d.)
Retrieved from
(3-D Heat Transfer Essay Example | Topics and Well Written Essays - 1250 Words)
“3-D Heat Transfer Essay Example | Topics and Well Written Essays - 1250 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF 3-D heat transfer

The Roles of 3 Key Participants in the Property Development Process In Australia

Security is of primary concern to people living in new small townships that are mushrooming all over Australia under the impact of rapid urbanization and high-density population. While architects are seen taking a proactive role in property development, others are cutting across traditional routines and creating a new role for themselves as designer-developers.

Architects, property developers, and town planners here in Australia see the true picture of the international partnership developed between these three key players in property development abroad and are now trying to implement them here. Despite differences, these players are working in unison to create world-class infrastructures.
“The economic and d...
8 Pages(2000 words)Report

Tort Law of the United Kingdom: 3 Problem Questions

Trespass on land, goods, and person is altogether the most common type of tort, but in all cases, the main concern is the allocation of responsibility for whatever losses are sustained. For anyone party to be held responsible for violation of the tort law, the claimant must establish that there is a duty of care and that there has been a breach of that duty to cause damage or loss to the claimant that needs to be compensated by an award of damages. There is a breach of the duty-of-care principle if the defendant is proven to have failed to do what a reasonable person will do in the situation presented.

Francesca was a chambermaid of good standing at Hulton hotel until a regular hotel guest stormed into the manager&rsquo...
8 Pages(2000 words)Case Study

Theodore Roosevelt: The 1905 Transfer Act

Like Thomas Jefferson before, Roosevelt was much more than a politician; more particularly, he was a man of many and varied interests.  He was interested in politics, in nature, in the environment, and in all of the social and environmental diversity which constituted his young and growing nation (Fehn, 2005). Theodore Roosevelt is well-known for having been a trustbuster for dissolving more than forty business monopolies, for having promoted the regulation of drugs and railroads, for protecting American interests in international affairs, and for promoting a strong and powerful American navy (Brands, 2001).  One of his more meaningful and lasting political decisions, however, was based upon his lifelong interest in the...
8 Pages(2000 words)Term Paper

The Combined Heat and Power Technology

... since 1900 than in all of human history before 1900. The CHP systems are also becoming popular in the rest of the world. With the increasing pressure on fossil fuels and other sources of fuel, it is the need of the hour to maximize the use of CHP systems where the heat that is generally wasted is used in an efficient manner for various household and industrial purposes. It also cuts down the energy costs by as much as 40% and produces power at rates lower than electric utility. It is therefore very essential for governments to formulate policies that promote the use of CHP systems that will benefit in long term and reduce the burden on environment. Figure: Conventional Generation Vs. CHP Generation Source: EPA, 2007 References Bullock,D...
6 Pages(1500 words)Literature review

Franklin D. Roosevelt a Man of Determination

...A man of determination and self-confidence, Franklin D. Roosevelt wanted that every citizen in the world live in freedom – freedom from fear, freedomfrom want, freedom of the way they want to worship God and freedom of speech and expression. While he strived to bring America out of the Great Depression, Roosevelt helped the people to gain faith in themselves. He was more of a guide to the people than a mere political leader. He maintained his promise of prompt and vigorous action and even though he was initially misunderstood, he did manage to bring recovery to business and agriculture, and even to the unemployed. He was a dedicated leader and served the nation without any selfish motives. He believed that the wealthy should be taxed...
6 Pages(1500 words)Assignment

The Union of European Football Association Control on Football Club Transfer Fees and Wages

..., but averagely spent over 68% on wages. Despite the revenues collected by these clubs, they still made £484 million in losses. This trend can be prevented through controlling how much money gets poured into football clubs in Europe (Conn 2012, p.32). Requiring clubs in Europe to balance their incomes with costs will help to improve the quality football. Given that wages and transfer fees represent the bulk of the cost element, many European clubs will be force d to keep their wage bill in check. Clubs will achieve this through either reducing the quantity of players under contract or lowering salary costs. A reduction in squad size will also limit the occurrence of player hoarding, hence making talents affordable and available...
8 Pages(2000 words)Term Paper

Oil Companies: Do Oil Companies Get Big Bucks While the Rest of Us Pay $3 a Gallon

... English 7 April Oil Companies: Do Oil Companies Get Big Bucks While The Rest Of Us Pay $3 A Gallon Introduction. The oil industry is one of the largest, most complex, and most important industry in the globe (Miller and Spoolman 284). The industry touches everyone’s life in one way or another whether rich or poor, from products like transportation, electricity, fuels and petrochemical products, carpets, eyeglasses and clothing. It also affects other sectors like national security, politics, elections, and international conflicts. The prices of oil are the most closely watched in the whole globe because they can lead to disaster. All countries are consumers of oil products, “but only a small set of nations are major producers of oil...
6 Pages(1500 words)Research Paper

Investigating Learning Transfer: Reflexivity Action

... the discrete bits of rhetorical knowledge they might learn in writing or communication classes – that prepare students to transfer academic rhetorical knowledge to solve professional rhetorical problems. Brent followed six students from the University of Calvary who participated in four-month-long co-ops in a variety of professional careers.  He interviewed them about their work experiences and asked them to reflect on how their rhetorical education at the university helped them write in their new professional environments.  Although he noted that the students had widely differing experiences, he was able to glean several common threads from their experiences.  The most prominent, which the students cited often, was how their professional...
15 Pages(3750 words)Essay

Second Language Reading or Writing Issue-Transfer between L1 and L2

..., but also successful. References Hudson, T. (2007). Teaching Second Language Reading. Oxford: Oxford University Press. Lee, J.W. & Schallert, D.L. (1997). The relative contribution of L2 language proficiency and L1 reading ability to L2 reading performance: a test of the threshold hypothesis in an EFL context, TESOL Quarterly, 31 (4), 713-739. McCutchen, D. (1996). A capacity theory of writing: Working memory in composition. Educational Psychology, (3), 299-325. McCutchen, D. (2000). Knowledge, processing, and working memory: Implications for a theory of writing. Educational Psychologist, 35(1), 13-23. Reis, S. & Ruban, L. (2004). Compensation Strategies Used by High-Ability Students with Learning Disabilities. Neuropsychology...
9 Pages(2250 words)Case Study

Characteristic of Omega-3 Fatty Acid

... acids”. These fatty acids are very importance for growth and repair, also it can be used to create other fatty acids (e.g. arachidonic acid (AA) is formed from LA). However, as change to the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) is limited, and most experts are recommended that sources are including in our diet. ALA and LA are found in plant and seed oils. EPA and DHA are found in oily fish (e.g., salmon, mackerel, and herring). AA can be obtained from animal sources, such as meat and egg yolk. Significance in History: In 19th century, due to extreme cold in England Cod liver oil became popular Omega-3 supplement, which was taken for the sake of Vitamin D. The sun deprived nation benefited...
12 Pages(3000 words)Research Paper
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic 3-D heat transfer for FREE!

Contact Us