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Harvested gravitational potential energy for mountain transportation and for calculating the efficiency of CASWAT-G machine

Author Affiliations

  • 1Central Dept. of Physics, Tribhuvan University, Kathmandu, Nepal, Faculty of Engineering, Aristotle University of Thessaloniki, Greece, Institute of Engineering Design and Logistic Engineering, Vienna University of Technology, Vienna, Austria
  • 2Central Dept. of Physics, Tribhuvan University, Kathmandu, Nepal
  • 3Department of Physics, Institute of Engineering, Tribhuvan University, Pulchok, Lalitpur Nepal

Res. J. Physical Sci., Volume 5, Issue (4), Pages 1-6, May,4 (2017)


CASWAT-G is a (Circulating Cable Supported up down Walking Technology by Using Gravity) surface transportation technology in which gravitational potential energy (GPE) harvested from descending user is utilized to pull ascending user up on the slope land surface and the system is somehow similar to surface ski-lift, funicular and rock climbing rope securing technique. GPE i.e. gravity of descending user and leg muscle forces of both ascending and descending user is utilized to operate the system. Beside the tests with several prototypes, especially designed CASWAT-G prototype having facility of wooden walking slope surface fitted on the iron base structure was utilized to prepare this paper. In this paper significant amount of harvested force from descending user and the utilized forces by ascending user is shown graphically. The average R-squared value and efficiency of the system were found to be 0.952 and 83.275% respectively which shows the performance is quite excellent for use. This system is simple but is efficient, safe and effective enough, cheap, and requires very comfortable effort of leg muscle force to walk up and down with negligible natural environment impact.


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