The teacher said that some people have studied the use of family gas, and put forward the water-saving plan, we feel that it is the experiment of measuring the amount of gas required to boil water at home with spare time. Experiment. I. Experiment Process We carefully observe the electronic fire gas cooker used by home, and found that when gas is closed, the gas knob (hereinafter referred to as knob) is in the vertical direction, we set this position to 0 °, gas opening When the maximum is maximum, the position is 90 ° (at 0 ° position, the pin, the pin, and the starting angle). We divided into five aliquots at 0-90 °, which represent different gas flow, which were 18 °, 36 °, 54 °, 72 °, 90 °, see Figure 1. Figure 1 Different knob position schematic diagram We have the time and the amount of gas required to record the time and the amount of gas required to record the time and the amount of gas required to record the water (3.75 liters, injection of the bottle of 1.25 liter of the bottle). Information is shown in Table 1. Second, the processing data sheet 1 Gas knob is burning a pot of water (3.75 liters) at different positions and the start time (divided) of the gas volume position (division) time (minute) gas meter At the beginning () gas meter, the number of gas meters () is required () 8 ° 6: 066: 25199.0809.2100.13036 ° 5: 496: 05168.9589.0800.12254 ° 5: 354: 49138.8198.9580.13972 ° 5: 225: 34128.6708.8190.14990 ° 5: 095: 19108.4988.6700.172 According to the knob position, the amount of gas used (represented by s), we can calculate the gas flow represented by different knob positions. (Expressed with L). The results are as follows: l = v / s. Table 2 Different locations represented by the knob, the flow time required to boil a pot of water (minutes) gas volume () / min liters per second 18 ° 190.1300.0068420.11436 ° 160.1220.0076250.12754 ° 130.1390.0106920.17872 ° 120.1490. 0124170.0172000.287 It can be seen from the above table that when the knob is opened, the flow rate (the amount of gas flowing from the gas valve) is also larger. In this way, we can consider the gas flow and boil one. The relationship between the time and the amount of gas required.
