Thermal comfort indices The calculations of the PMV (predicted mean vote) and PPD (predicted percent of dissatisfied people) were done by using the CBE Thermal Comfort Tool of the University of California Berkeley that has been proposed based on ASHRAE Standard 55-2013 (Tyler‚ et al.‚ 2017). The result obtained after calculating PMV index for (H1) is varies between 1.63 to 2.1with the mean value of 1.99‚ and the 80% satisfaction falls within the range of [-1.99< PMV< +1.99]. By equating to ASHRAE
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many electrical devices‚ including a facsimile transmission system Speed : transmit data at different rates‚ from 4800 bps to 28 800 bps A 9600 bps fax machine typically requires 10 to 20 seconds to transmit one page Printer type : use a thermal printer that requires special paper that tends to turn yellow or brown after a period More expensive fax machines have printers that can print on regular bond paper Autodialing : variety dialing features Some enable to program the fax to send
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by moving a pen over the surface of paper. It is usually used for large printing requirements of CAD drawings of houses‚ buildings‚ cars‚ airplanes and others. It is also used for vinyl and plastic used for billions and posters. THERMAL PRINTERS Produce prints on thermal paper by selective heating wherein heated areas turn black creating an image. It is mostly used in groceries and department stores. They print faster and quieter than dot matrix. HEADPHONE It is a small speaker with a way to hold
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The University of Sydney Aerospace‚ Mechanical and Mechatronic Engineering MECH3260 Thermal Engineering Heat Transfer Quiz 3 2007 Time: 40 minutes Answer ONE question only. Question 1 Consider the cylindrical receiver in a solar thermal power plant shown below. The receiver is made of opaque material and has a diameter D = 8m and length L = 14m. At a particular time‚ the heliostats direct a concentrated solar flux of q”S = 80 kW/m2
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is more serious. In some hot rotary kiln‚ because of withstanding the high temperature material corrosion‚ erosion and abrasion‚ more use of magnesite chrome brick‚ magnesium aluminum bricks‚ high aluminum bricks and so on‚ these bricks of the thermal conductivity‚ heat loss of kiln body is large‚ in order to save energy and prolong the service life of kiln lining‚ in the build by laying bricks or stones to work outside layer heat insulation brick. These two kinds of brick can only build by laying
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This type of heat transfer does not rely on any contact between the source of the heat and the object that is heated‚ like it happens with conduction and convection. Sunlight is a form of radiation. Heat can be transmitted though space by thermal radiation. Thermal radiation is often called infrared radiation. This radiation is a type
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reduce a loft ’s U value by around 95%. [3] Conduction is by where heat is lost by each molecule passing heat on to another molecule through a substance‚ these molecules are in direct contact with each other. You see this clearly when you look at a thermal imaging picture of a wall. You can see this heat loss is higher where the cavity wall insulation has slumped or not been correctly filled. [4] Cavity wall insulation is so cost effective that it will pay for itself over and over again. The better
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1.) Define social class. Identify three criteria used to conceptualize social class placement. 1.)Social class is a “class society‚ a set of concepts in the social sciences and political theory centered on models of social stratification in which people are grouped into a set of hierarchical social categories”( Grant‚2001‚p.161). The most common being the upper‚ middle‚ and lower classes. The upper class consist of people or families that represent institutional leadership‚ heads of multinational
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Name Chapter 8--Stratification: United States and Global Perspectives Description Instructions Modify Add Question Here Question 1 Multiple Choice Question 0 points Modify Remove Which of the following is NOT one of the three lessons about social stratification that is illustrated in Brym and Lie’s discussion of the 1975 Italian movie‚ Swept Away. Answer It is possible to be rich without working hard because one can inherit wealth. One can work hard without becoming rich
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suggestions to reduce the gap.Social stratification is the structured form of social inequality within a ranked group of people that bring about unequal financial rewards‚ such as a person’s income‚ and power or property‚ which is brought upon by wealth in a society. The social stratification systems come in many different ways and forms. For example‚ slavery‚ castes‚ social class‚ race‚ and gender are just some of the issues that are affected by stratification. This essay will particularly focus
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