# Mini Case Study Of The Mini Project Of Semester One

1180 Words 5 Pages
Title :
Mini Project of Semester One

Problem Statement :
We use the boiled water in our daily life but which of the home use heat generating appliances that we used to boil water is the most efficiency?

Introduction :
Different heat generating appliances, such as electric kettle, microwave, electric thermos flask, convection oven and slow cooker have difference efficiency of appliances. Home use heat generating appliances look pretty much the same on the outside, but they vary greatly in terms of energy-efficiency and operating costs. The more energy-efficient an appliance is, the less it costs to run and also can lower the utility bill and help protect the environment.

Objective :
To comparing the efficiency of four different type of home
Type of appliance Microwave Electric jug Convection oven Slow cooker
Mean of heating time (s) 260.33 302.00 284.00 2792.67
Table 2: A table to show the mean of heating time.
Calculations :
Electric Kettle
E=P x t =800 x 213 =170400 J
Q= m c T =500 x 4.19 x 69 =144555 J
Efficiency of appliance = 144555/170400 x 100% = 84.8 %
E=P x t =700 x 270 =189000 J
Q= m c T =500 x 4.19 x 69 =144555 J
Efficiency of appliance = 144555/189000 x 100% = 76.5 %
Convection Oven
E=P x t =800 x 284 =227200 J
Q= m c T =500 x 4.19 x 69 =144555 J
Efficiency of appliance = 144555/227200 x 100% = 63.6 %
Slow Cooker
E=P x t =200 x 1865 =373000 J
Q= m c