Recent content by Ying_Thes
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Hi Simon, I was a Veterinary Technology major, and am currently doing Animal Sciences, not physics which would probably explain why I haven't learned about the time constant etc and physics in general since we didn't have any classes for those. This is my first time actually doing thing kind of...- Ying_Thes
- Post #17
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Hi Simon, The plot of lnTemp vs time and Temp vs Time are virtually identical, and they both show a slight curve but the lnTemp vs Time plot does fit the straight line slightly better. So if I get the equation for the fitted line in the format of y=mx + c how would I be able to get the Time...- Ying_Thes
- Post #15
- Forum: Thermodynamics
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Getting some guidance for my thesis
The people in this forum are very kind and knowledgeable! Though I am still unsure, I am getting ahead! Thank you- Ying_Thes
- Post #4
- Forum: New Member Introductions
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
I have plotted a graph of log-temperature vs time by transforming the temperature data using LOG10 (data), is this correct for getting the log-temperature? The line mimics that of the temperature vs time plot very closely. If the data does not produce a straight line plot, is there another way...- Ying_Thes
- Post #13
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Oh~ Thanks a lot, I tend to take things too literally with mathematical language, kinda explains my grades back then. I will do that the error distribution plot. So if I get y = -0.0156x + 7.4019 do I solve it to get the time constant? Because I read somewhere that m (slope), in this case...- Ying_Thes
- Post #11
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Just wondering, what do you mean by straight line? Horizontally straight? -No, it's not, Vertically straight? - No, it's not. But it is a straight downwards slope for the duration of the experiment.- Ying_Thes
- Post #9
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
As I mentioned in the original post, I calculated heat loss for the bags with this formula Heat loss C/sec/cm2 = {[k * (Ti - Tf)] / As} / t Where k = Thermal conductivity of tree bark or air Ti = initial temperature Tf = final temperature As = Surface area exposed to either tree bark or air t...- Ying_Thes
- Post #7
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
I was thinking the same in regards that I already established the results, but my supervisors seems to think that the thermal time constant plays a big role and wants me to include a thermal time constant model if possible, is there any references sources you would refer me to for that?- Ying_Thes
- Post #5
- Forum: Thermodynamics
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Hi Simon, Thanks for replying. From the rate of cooling which I initially calculated it showed that the bags against the tree trunks were cooling faster than the control which was hanging off a branch. This experiment is part of my undergrad honours project and we were just testing the...- Ying_Thes
- Post #3
- Forum: Thermodynamics
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Getting some guidance for my thesis
Hi everyone, I am new to the forum (as you probably suspect from this post) and I am basically trying to get some guidance with my honours thesis about thermal time constants and comparing cooling rates~- Ying_Thes
- Thread
- Replies: 3
- Forum: New Member Introductions
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Graduate Cooling rates of saline bags on tree bark with conduction and convection
Hi all, I am not sure if the is the right place to post the question being new to the forum, but I am looking for some help with a heat transfer experiment that I ran for my honours thesis. Essentially the aim is to determine if warmed saline fluid bags taped to 3 different types of tree barks...- Ying_Thes
- Thread
- Conduction Conductivity Convection Cooling Physics Thermal Thermal physics
- Replies: 16
- Forum: Thermodynamics