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Hot water in a immersion heater.

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Introduction

Hot water in a immersion heater. Background Knowledge: Water may be used to heat up water during the night using an immersion heater this is to take advantage of the cheap rate of electricity. But the problem is to keep the water's heat till the time when it is used. E.g. for a bath or washing up. Immersion heaters are used in many homes and are very efficient. They insulate heat well, this is because most of them have an insulated jacket which is mainly made out of a fibre glass wool and are coated with a bright colour this is because fibre glass wool is very thick and does have many air holes in it. This is good because heat air is a good conductor of heat and a bad insulator of heat, therefore the fewer the air holes the fewer the heat is that is conducted. Also the being as the wool has an outer colour coat which is bright this is also good as bright colours are good emitters of heat. ...read more.

Middle

This may cause me to have flexural results which I will discuss in my evaluation. Prediction: I predict that the best insulator of heat will be a thick solid material which does not have many air holes as the air holes will conduct the heat. Explanation: Equipment: Bunsen burner, beaker, thermometer, heat mat, tripod, tin cans, cotton wool, foil, velvet and water. In my experiment I will keep the same the volume of the water as if I have different volumes it will effect the heat that is contained in the can, I will also keep the shape of the tin the same as if I change it might effect the way the heat is spread finally I will not change the size of the cans this is because the size of the cans will effect the way the heat is spread and the amount of heat that the water has got. I will also put lids on my cans; this is because heat rises so I will put a lid on the top to stop the heat from rising and escaping. ...read more.

Conclusion

My graph shows that there was no major drop in the temperatures, and also that the no insulation experiment dropped to the lowest temperature out of all of them. This shows that the insulation actually does work. However there was no major difference in all of the temperature drops. My prediction not fully correct, but I was correct in saying that a solid material will insulate the heat well. Evaluation: Overall my experiment went well and I found that what I though was correct, however next time I would work with more people to help get more results. If I was to do this experiment again I would also use a lot more colors for the coating so I could see what effect a range of coluors would have on the insulation of heat. I would also use more materials to find the perfect insulator of heat. Pratin Patel 10O MR Welsh Science Coursework 22nd November 2003 Pratin Patel 10O MR Welsh Science Coursework 22nd November 2003 ...read more.

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