Recent content by eddiej90

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    Calculating Flue Gas Losses, Shell Boiler

    I've found that this document has many typos. You'd think a british standard that was published ten years ago and has been confirmed wouldn't contain silly little errors like that.
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    Calculating Flue Gas Losses, Shell Boiler

    I am currently performing an acceptance test for a newly installed gas fired shell boiler. I am following the British Standard "BS EN 12953-11:2003". I have encountered a problem with equation (8.5-2) found on page 16 of the document described above. This problem being that a value of...
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    Two reacting nuclei, maximum distance to overcome the coulomb barrier

    Basically I'm trying to find out how to find the maximum distance between two deuterium nuclei in order to overcome the coulomb barrier, causing them to fuse. Thanks
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    How Effective is a Counterflow Heat Exchanger for Home Air Circulation?

    I am designing a heat exchanger to be used in a house to circulate air from the outside. I have very basic knowledge on the subject and would appreciate any input. I have looked up various topics on the subject and am using "introduction to thermal and fluid engineering" by Kaminski. However...
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    Optimizing Energy Efficiency in a Terraced House: Data Collection and Analysis

    The best website iv found is http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=ISOUTHYO14&day=22&year=2012&month=11&graphspan=year Its the best one iv found so far and even shows most of the data i need over a daily period for a year :) although to see the hourly data i need to...
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    Optimizing Energy Efficiency in a Terraced House: Data Collection and Analysis

    Thanks for your help but I should probably have mentioned I'm in the UK. Would help if we didnt both have a city named Sheffield. Any ideas on where to get the data for the UK?
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    Optimizing Energy Efficiency in a Terraced House: Data Collection and Analysis

    I am planning on calculating the heat loss and heat gain of a terraced house. The data I have collected so far are the footprints of the house, with the size of windows and walls, roof and floors and the materials of which these are made. I know the rear of the house faces S-SE and its...
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    Does a Thicker Pipe Increase Pressure?

    Sorry, my bad terminology letting me down there. One pipe has a larger inner diameter than the other. Thanks
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    Does a Thicker Pipe Increase Pressure?

    Can someone explain to me why a thicker pipe would have a higher pressure than that of a thinner pipe with the same mass flow rate? Surely the thinner pipe would have a higher pressure?
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    Solving the Differential Equation Using Laplace Transform

    Thamkyou for the link, however you cannot factorise the denominator, unless you complete the square. Can you use the partial fraction method with completing the square?
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    Solving the Differential Equation Using Laplace Transform

    Homework Statement Using the laplace transform technique, solve the ordinary differential equation: d2y/dt2+4.2dy/dt+4.5y=0 initial conditions: y(0)=1 and y'(0)=1 Homework Equations From laplace tables: d2y/dt2=s2Y-sy(0)-y'(0) dy/dt=sY-y(0) [b]3. The Attempt at a Solution...
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