Topic :: Atmosphere
I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay
3 4554Question 49 - According to rules of thumb in chemical process design, consider the use of an expander for reducing the pressure of a gas when more than 20 horsepowers can be recovered. The theoretical adiabatic horsepower (THp) for expanding a gas could be estimated from the equation : THp = Q [ Ti / (8130a) ] [ 1 - (Po / Pi) ^ a ] where 3 ^ 3 is 3 power 3 or 27, Q is volumetric flowrate in standard cubic feet per minute, Ti is inlet temperature in degree Rankine, a = (k - 1) / k where k = Cp / Cv, Po and Pi are reference and systemic pressures respectively. (a) Assume Cp / Cv = 1.4, Po = 14.7 psia, (temperature in degree Rankine) = [ (temperature in degree Celsius) + 273.15 ] (9 / 5), nitrogen gas at Pi = 90 psia and 25 degree Celsius flowing at Q = 230 standard cubic feet per minute is to be vented to the atmosphere. According to rules of thumb, should an expander or a valve be used? (b) Find the outlet temperature To by using the equation To = Ti (Po / Pi) ^ a.
1 1773Question 82 - (a) The Hyperion sewage plant in Los Angeles burns 8 million cubic feet of natural gas per day to generate power in United States of America. If 1 metre = 3.28084 feet, then how many cubic metres of such gas is burnt per hour? (b) A reservoir of natural gas produces 50 mole % methane and 50 mole % ethane. At zero degree Celsius and one atmosphere, the density of methane gas is 0.716 g / L and the density of ethane gas is 1.3562 mg / (cubic cm). The molar mass of methane is 16.04 g / mol and molar mass of ethane is 30.07 g / mol. (i) Find the mass % of methane and ethane in the natural gas. (ii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the gases are ideal where final volume of the gas mixture is the sum of volume of the individual gases at constant temperature and pressure. (iii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the final mass of the gas mixture is the sum of mass of the individual gases. Assume the gases are ideal where mole % = volume % at constant pressure and temperature.
1 1932PROCESS DESIGN - EXAMPLE 21.1 : According to rules of thumb in chemical process design, consider the use of an expander for reducing the pressure of a gas when more than 20 horsepowers can be recovered. The theoretical adiabatic horsepower (THp) for expanding a gas could be estimated from the equation : THp = Q [ Ti / (8130a) ] [ 1 - (Po / Pi) ^ a ] where 3 ^ 3 is 3 power 3 or 27, Q is volumetric flowrate in standard cubic feet per minute, Ti is inlet temperature in degree Rankine, a = (k - 1) / k where k = Cp / Cv, Po and Pi are reference and systemic pressures respectively. (a) Assume Cp / Cv = 1.4, Po = 14.7 psia, (temperature in degree Rankine) = [ (temperature in degree Celsius) + 273.15 ] (9 / 5), nitrogen gas at Pi = 90 psia and 25 degree Celsius flowing at Q = 230 standard cubic feet per minute is to be vented to the atmosphere. According to rules of thumb, should an expander or a valve be used? (b) Find the outlet temperature To by using the equation To = Ti (Po / Pi) ^ a.
1 1550NATURAL GAS ENGINEERING - QUESTION 26.2 : (a) The Hyperion sewage plant in Los Angeles burns 8 million cubic feet of natural gas per day to generate power in United States of America. If 1 metre = 3.28084 feet, then how many cubic metres of such gas is burnt per hour? (b) A reservoir of natural gas produces 50 mole % methane and 50 mole % ethane. At zero degree Celsius and one atmosphere, the density of methane gas is 0.716 g / L and the density of ethane gas is 1.3562 mg / (cubic cm). The molar mass of methane is 16.04 g / mol and molar mass of ethane is 30.07 g / mol. (i) Find the mass % of methane and ethane in the natural gas. (ii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the gases are ideal where final volume of the gas mixture is the sum of volume of the individual gases at constant temperature and pressure. (iii) Find the average density of the natural gas mixture in the reservoir at zero degree Celsius and one atmosphere, by assuming that the final mass of the gas mixture is the sum of mass of the individual gases. Assume the gases are ideal where mole % = volume % at constant pressure and temperature.
1 1418QUANTUM BIOLOGY - EXAMPLE 33.8 : (a) Let ^ be the symbol of power where 1 ^ 2 = 1 x 1 = 1, 2 ^ 2 = 2 x 2 = 4. Let the number of electrons in a human body to be 10 ^ 28 = A, the number of all of the grains of sand on Earth planet to be 7 x (10 ^ 20) = B, the number of all the stars in the visible sky to be 8 x (10 ^ 3) = C. By assuming that every star in the visible sky has the same number of grains of sand as on Earth planet, prove by mathematical calculations that there are more electrons in one human body compared to the number of all of the grains of sand on the stars in the visible sky. (b) The incoming solar radiation to the Earth's surface is mainly from sun. Around 51 % of the radiation is absorbed by Earth's surface. Around 19 % is absorbed by atmosphere and clouds. In term of reflection, 4 % of the radiation is from surface of Earth, 6 % is reflected by atmosphere and the rest is reflected by clouds. Find the percentage of radiation absorbed by and reflected by biological beings on Earth, with reason for your response.
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what its mean 'inverter based technology' ? if we talk about refrigerators, splits ACs etc how it helps to produce & keep more coolness and chilled atmosphere ?
Layers of atmosphere inversion of temperature is noticed in toposphere or in statosphere ?
why the reaction turbines are not exposed to atmosphere? and why the impulse turbines are exposed to?
Whether from one system to another we are able to share the Data? Whether Antivirus helps the system to keep it safe from Virus? Why you consider yourself suitable for this post? Why you want to join in this company? And what made you to apply for this job? State with Reason What you think is best for your department? A)Strict Discipline B)Family Atmosphere C)Work as Team in Department Are you to relocate yourself to any site or Office as required by Company?
I have applied for a F1 VISA & I had appointments on 19th july and 2nd August but both times my VISA has been rejected due to unknown reasons I'm posting my conversation with VO both times 1st appointment 19 July Me: Good morning sir. VO: Hi. VO: Why do you want to go to IIT? Me: This institute provides one of the best courses in Mechanical Engineering. It has very good study atmosphere especially the faculty that is highly qualified. Most importantly It has very good student to faculty ratio ie. 10:1 that is highly favorable for student’s studies. VO: Which other universities have you applied to? Me: I have applied to Purdue, USC….( I was telling about other 2 universities also, but he interrupted) VO: Why not Purdue? Me: Coz I’ve got a rejection from there. VO: And what about USC? Me: I’ve got rejected there too. Also, I’ve applied to 2 other universities whose decisions are still awaited they are SUNY Buffallo and Texas A&M. VO: What are your qualifications? Me: I’ve done Civil Engineering from Jamia Millia Islamia University. VO: Can I see your marksheets please? Me: Sure ( I gave him my neatly clipped marksheet bundle..) VO: Do you have any backlogs? Me: No VO: Where are the marks? I’m just seeing the grades.. Me: They just provide us with these grades and there is a CPI at the end. (I was thinking I got my VISA but he returned all my forms back along with some US embassy brochure and replied…) VO: Thank you..you don’t qualify for the US VISA this time. ( I maintained my composure and asked..) Me: Can you tell me the reason please? VO: Read the brochure. ( I was feeling devastated but I smiled back and said..) Me: Thank you. 2nd appointment 2 August Me: Hello sir, How r u.. VO: Fine, Where r u going? Me: Illinois Institute of Technology VO: Why IIT? Me: The courses required for MS in mechanical Engineering at IIT are very much related to what have i done in my undergrads, there are subjects like thermodynamics, engineering mechanics, fluid mechanics, mechanics of materials that i've already studied, so definitely it will be a plus point and also its faculty is very good and student to faculty ratio is 10:1 that is highly favorable. VO: R u working somewhere? Me: Yes, I'm working in Vimtech infrastructure pvt ltd as a technical supervisor. VO: What is your percentage? Me: Sir we have a grading system in our university and different weightage is assigned to each grade and weighted mean is calculated that is called as CPI ie cumulative percentage index and i've a cpi 6.3/10. VO: That is a quite low. Me: No sir, there is a formula given at the back of marksheet which calculates my %age as 64.2 VO: Show me your marksheets. Me: Sure VO: Do u have any backlogs? Me: No, Sir VO: You have a lot of C grades.(He returned my documents back and said) VO: You need to prove that u r a credible student. GRE: 1330( Q770;V560) TOEFL 96 University: Illinois Institute Of Technology There's one more thing that i need to tell u that i have got around 16 backlogs in my undergrads, but i've cleared them all and they are not reflected in my marksheets but the year mentioned in my marksheets is of when i clear all papers of a particular semester. Can it be a problem? What should i do now ? should i reapply for a US VISA as my joining date as per my I20 is 23 August. Kindly suggest me something
why we use visible spectrum for FSO (free space optic),although it seems strange that when we have to communicate in urban areas then too much light will be in atmosphere for the sake of communication.
How much oxygen is in the atmosphere?
You are a project manager for Pizza Direct, which is a retail pizza delivery store. Your company is competing with another retail store for the option of opening two new stores in a foreign country. You have been invited to dinner with the prospective foreign business partners and their spouses upon your arrival. You know that all of the following are generally true except: A. You should spend time building relationships with your prospective foreign business partners before getting down to business. B. You should explain your company's rules, standards, and operating policies at your first meeting with the prospective foreign business partners. C. You should build an atmosphere of mutual trust and cooperation. D. You should respect the cultural differences you'll encounter when working with your prospective foreign business partners.
Describe the venus atmosphere?
How many principal gases are there in the atmosphere ?
Describe the atmosphere on Venus, Mar and Jupiter.
How is radiocarbon produced in the atmosphere?
Why do you not collapse under the pressure created by the atmosphere?
How would you create and promote a safe atmosphere in your classroom?
What is the thinnest layer of the suns atmosphere?
