Water consumption, energy consumption and velocity: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
The window cleaning robot is supplied with water by means of a water tank, and the capacity of | The window cleaning robot is supplied with water by means of a water tank, and the capacity of | ||
the water tank is supposed to be sufficient to be able to clean a window without interruptions.<br /> | the water tank is supposed to be sufficient to be able to clean a window without interruptions.<br/><br/> | ||
There are a few decisions and assumptions that had to be made in order to model the water | There are a few decisions and assumptions that had to be made in order to model the water | ||
consumption. The water consumption of the robot for a time step is taken to be 1/8640 ''L/s''. This specific value for the water consumption is determined by looking at the amount of water a window | consumption. The water consumption of the robot for a time step is taken to be 1/8640 ''L/s''. This specific value for the water consumption is determined by looking at the amount of water a window | ||
| Line 8: | Line 8: | ||
preparation time and intermission time. This would mean that a single window cleaner would clean | preparation time and intermission time. This would mean that a single window cleaner would clean | ||
approximately 60 ''m2/hr''. Given this number, the water consumption becomes 5/12 ''L/hr'' and thus 1/8640 ''L/s.'' Note that these numbers are of course fairly dependent on the size, height and difficulty | approximately 60 ''m2/hr''. Given this number, the water consumption becomes 5/12 ''L/hr'' and thus 1/8640 ''L/s.'' Note that these numbers are of course fairly dependent on the size, height and difficulty | ||
level of the window, but for modeling purpose, the average seems to be a plausible choice. | level of the window, but for modeling purpose, the average seems to be a plausible choice.<br/><br/> | ||
Revision as of 17:35, 2 April 2018
The window cleaning robot is supplied with water by means of a water tank, and the capacity of
the water tank is supposed to be sufficient to be able to clean a window without interruptions.
There are a few decisions and assumptions that had to be made in order to model the water
consumption. The water consumption of the robot for a time step is taken to be 1/8640 L/s. This specific value for the water consumption is determined by looking at the amount of water a window
washer uses per hour, together with the cleaning speed in terms of area per hour. According
to an experienced window washer, the average cleaning speed is 50 m2/hr. In Moon’s
analysis, it is given that five window cleaners cleaned a surface of 626.4m2 in 2 hours including
preparation time and intermission time. This would mean that a single window cleaner would clean
approximately 60 m2/hr. Given this number, the water consumption becomes 5/12 L/hr and thus 1/8640 L/s. Note that these numbers are of course fairly dependent on the size, height and difficulty
level of the window, but for modeling purpose, the average seems to be a plausible choice.