Solutions (Week-01) Chapter-01 1-12 A plastic tank is filled with water. The weight of the combined system is to be determined. Assumptions The density of water is constant throughout. Properties The density of water is given to be = 1000 kg/m3. Analysis The mass of the water in the tank and the total mass are mw =V =(1000 kg/m3)(0.2 m3) = 200 kg mtotal = mw + mtank = 200 + 3 = 203 kg Thus‚ 1-14 The variation of gravitational acceleration above the sea level is given as
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Unit _ - Control of Air Pollution FABRIC FILTER – It consists of a tabular bag which is closed at the upper end and has a happer attached at the lower end to collect particles when they are dislodged from the fabric. Many such bags are hanged in a bag house. The filter bags are cleaned occasionally by a mechanical shaker for efficient filtration. It has high efficiency and can filter 0.5 µm size particles. ELECTROSTATIC PRECIPITATOR – It works on the principle of electrostatic precipitation
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raised beyond a certain limit‚ a point is reached when a pale violet glow appears on the conductor surface‚ together with a slight hissing noise and a smell of ozone. This phenomenon is known as corona. For an overhead transmission system the atmospheric air‚ which is the dielectric medium‚ behaves practically like a perfect insulator when the potential difference between the conductors is small. As long as the air is subjected to uniform electric field intensity‚ the flow of current between the
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Atmospheric Pollution Yvonne Perry Everest Online Atmospheric Pollution There are both primary and secondary air pollutants. The primary pollutants “Are the direct products of combustion and evaporation‚” (Wright‚ 2011) and some can undergo further reactions in the atmosphere and causing secondary pollutants. The names of the primary pollutants are: Suspended particulate matter‚ volatile organic compounds‚ carbon monoxide‚ nitrogen oxides‚ sulfur dioxide‚ lead‚ air toxics‚ and radon. Suspended
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bottle from the water collects smoke particles which form into clouds. In the sky water molecules cling onto solid particles. (5 points) 3. What role did pressure play in the formation of the clouds? Answer: Pressure played a huge role‚ the atmospheric air pressure pushed up the smoke where it reaches the top of the bottle collects water molecules and is pushed back down forming a cloud. (5 points) 4. Based on what you have discovered‚ which of the following conditions would lead to the formation
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nitrogen‚ and the rest other gases B – 10% oxygen‚ 89% nitrogen‚ and the rest other gases C – 88% oxygen‚ 9% nitrogen‚ and the rest other gases D – 50% oxygen‚ 40$ nitrogen and the rest other gases Ref: all Ans: A 10055. In which layer is most of the atmospheric humidity concentrated? A – Troposphere B – Tropopause C – Stratosphere D – Stratopause Ref: all Ans: A 10061. The thickness of the troposphere varies with: A – latitude B – longitude C – rotation of the earth D – the wind Ref: all Ans: A 10102
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Mountings: 1. Fusible plug; composition – Bismuth 50%‚ Tin 30%‚ Lead 20%‚ Melting point: 220΄F (104.4΄C). Fitted at the reservoir’s bottom or on reservoir at ship side‚ when relief valve (safety valve) is not directly fitted on the reservoir. Atmospheric relief valve; provided for back-up of fusible plug. In case of ER fire when CO₂ flooding is required‚ this valve is opened before evacuating ER. Spring loaded safety valve; Setting pressure: 32 bar (for 30 bar working pressure)‚ with ≯ 10% rise
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the sensors. Finally it looks at ways of improving the functionality of such a system‚ through improved hardware design and better software control. 1 INTRODUCTION The measurement of wind speeds and rain rates are important in terms of atmospheric monitoring and meteorological measurements. This project is to develop a combined wind-rain sensor using hot metal plates. For wind speed measurements‚ the moving air carries heat away from the hot plates at a rate dependent on wind speed. Providing
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in the figure. A mercury barometer located inside the shell reads 765 mm Hg‚ and a mercury U-tube manometer designed to give the outside water pressure indicates a differential reading of 735 mm Hg as illustrated. Based on these data what is the atmospheric pressure at the ocean surface. mercury=133 kN/m3‚ sea water=10.1 kN/m3 4) A partitioned tank as shown contains water and mercury. What is the gage pressure in the air trapped in the left chamber? What pressure would the air on the left need to
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Example 1 Nozzle Flow - Steam Steam at 1.5 bar and 150 deg C enters a nozzle at 10 m/s and exits at 1 bar. Assuming the flow is reversible and adiabatic‚ determine the exit temperature and velocity. If the exit nozzle area is 0.001 m2‚ evaluate the mass flow rate of the steam through the nozzle. P1 = 1.5 bar T1 = 90 deg C V1 = 10 m/s A2 = 0.001 m2 P2 =1 bar T2 = ? V2 = ? mdot = ? V2 = sqrt(V1*V1+2*(h1-h2)) mdot = rho*A2*V2 = A2*V2/v2 T2 382.60 m/s 0.22 kg/s 111.81 degC Superheated
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