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An Investigation Into The Effect Of Surface Area to Volume Ratio On The Rate Of Heat Loss

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Introduction

An Investigation Into The Effect Of Surface Area to Volume Ratio On The Rate Of Heat Loss Heat loss from an object is affected by its surface area to volume ratio (SA/V). The smaller the SA/V the faster heat is lost by conduction, convection and radiation. Other factors may influence the rate of heat loss by the above physical processes, e.g. insulation type or thickness Task Prepare a detailed written plan for an investigation to determine the effect of vessel size on the rate of heat loss. ...read more.

Middle

* An outline of how the results will be processed (table 2 and graph) to determine whether the hypothesis should be accepted or rejected and an assessment of error (range, standard error or semi-interquartile range). A statistical test could be used, e.g. Mann-Whitney 'u' test to compare the significance of a difference between two groups of data (p = 0.05). See the statistics folder for this. * Evaluation - discuss variability, trends, explanation involving conduction, convection and radiation, improved methods and further work. ...read more.

Conclusion

Use the Assessment Criteria Sheet to ensure that all points are adequately covered! Table to show the effect of vessel capacity on the rate of heat loss (over a 30 minute period) from conical flasks. Replicate experiments 500 cm3 Flask 250 cm3 Flask Initial temp. ?C Final temp. ?C Initial temp. ?C Final temp. ?C 1 93 70 93 63 2 92 70 91 62 3 91 70 88 62 4 95 72 89 61 5 92 70 90 62 6 88 68 83 58 ...read more.

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