DOI: 10.5061/dryad.zgmsbccr6
title: Gravitational energy harvesting from hydrostatic water columns

description: This work presents a novel and rigorous framework for extracting
 gravitational potential energy stored in hydrostatic water columns using
 an advanced piston-based mechanical system. Combining classical
 hydrostatic theory, modern stratified fluid energy concepts (APE to BPE
 transition), and innovative reset mechanisms (pulley-canceled forces and
 air-assisted actuation), we derive a new general law for hydrostatic
 energy depletion. The system efficiently harvests available gravitational
 energy without violating conservation laws, achieving net positive energy
 conversion cycles while maintaining mass conservation. This approach opens
 a new frontier in gravitational energy extraction from static fluid
 reservoirs, bridging fluid dynamics, thermodynamics, and mechanical
 engineering.
description: # Gravitational Energy Harvesting from Hydrostatic Water Columns Dataset
 DOI: [10.5061/dryad.zgmsbccr6](10.5061/dryad.zgmsbccr6) ## Description of
 the data and file structure This dataset contains experimental gauge
 pressure measurements collected during submerged reset tests of a
 hydrostatic annullating-system at a fixed depth of 12 meters below sea
 level. The purpose of the study was to determine the minimum air pressure
 (Pc) required to lift the annullator system vertically against gravity,
 using compressed air injected into the system’s back chamber. The
 annullator was kept at a constant depth using a crane, and analog
 manometers recorded the gauge pressure at which motion initiated. The
 experiments were repeated 50 times under identical conditions to validate
 consistency and pressure symmetry assumptions in the design. The data
 supports the findings of the associated manuscript submitted to Scientific
 Reports in 2025, "Gravitational energy harvesting from hydrostatic
 water columns". ### Files and variables ### File:
 **Experimental_Gauge_Pressure_Data_from_12m_Submerged_Annullator_Reset_Tests_(2025).xlsx** **Description:** This Excel file contains two sheets. The first sheet, *"README"*, provides a structured explanation of the experimental setup, variable definitions, instrumentation, trial procedures, and data interpretation. The second sheet, *"Raw Data"*, presents 50 individual experimental trials measuring the gauge pressure required to reset the annullating-system submerged at 12 meters depth. **Variables** * **Trial Number**: Sequential identifier from 1 to 50 for each experimental run. * **Gauge Pressure (Pc) [bar]**: Measured gauge pressure in bar at which upward motion of the annullating-system was initiated using injected air. * **Note**: Clarifies that the pressure values include gravitational compensation due to the annullator's weight (0.365 bar). **Missing Values:** No missing values are present. All data points are complete and verified. ## Code/software The dataset is provided in `.xlsx` format and can be opened using any spreadsheet software such as: * **Microsoft Excel** (version 2010 or later) * **LibreOffice Calc** (free and open-source) * **Google Sheets** (web-based, free with a Google account) * **Python** with `pandas` library (`read_excel` function)\ – Recommended environment: Python 3.10+ with `pandas &gt;= 1.3` No proprietary software or custom code is required to view or analyze the dataset. The data is fully self-contained and can be accessed and analyzed using standard spreadsheet or data processing tools. No additional scripts or code were submitted as part of this dataset. ## Access information **Other publicly accessible locations of the data:** * This dataset is not publicly available elsewhere at the time of submission. It is being deposited exclusively via Dryad. **Data was derived from the following sources:** * All data were collected through original experimental work performed by the authors. No data were derived from external sources.