Data Documentation for the Original Research Paper (ORP) entitled: "Design of a new turbine for OWC wave energy converters: The DDT
concept" https://doi.org/10.1016/j.renene.2020.12.125.

General Information
Experimental data associated with the aforementioned ORP authored by Manuel Garcia-Diaz and co-authored by Bruno Pereiras, Celia Miguel-Gonzalez, Laudino Rodriguez and Jesus Fernandez-Oro
, all members of FERES research group of the University of Oviedo. Note that, these datasets are protected under Open Data Commons License: ODC - BY

Name of data set
"Experiemtal data of an axial OWC turbine"

Name of data files in data set
The data is contained in a simple Excel File named: "ExperimentalDataAxalTurbine"

Dataset language
English

Date the data set was last modified
01-07-2018

Funder
At data collection date, Manuel Garcia-Diaz was supported by the “Ministerio de Educación, Cultura y Deporte” within the “Formación del Profesor Universitario”
Program (grant number FPU15/04375).

How to cite data



Methodology for data collection
The data set is an experimental data obtained in the laboratory of the FERES Group at the University of Oviedo. Data was obtained by testing a 
3D printed scale model of an unidirectional axial turbine. More info about the equipment can be found in https://doi.org/10.1016/j.renene.2020.12.125

Data collector
Manuel Garcia-Diaz

Date of data collection
01-03-2018

Person to contact with questions
Manuel Garcia-Diaz (garciadmanuel@uniovi.es)

Data entry
11-07-2024

Software used to prepare data set
Microsoft Excel

Data processing that was performed
The Excel file contains 2 sheets. 
First one is the losses characterization for the electric motor and the turbine. This data was taken to characterize the electrical and mechanical losses
of the model without air. For this, the system was fed with an electric supplier.

In the second sheet the experimental data is contained. There is a line in the table that divides two types of data.
Data above the line was obtained by feeding the eletrical motor with the supplier, as the losses are already known, the turbine power can be calculated by difference.
Data below the line was obtained by conecting resistors to the electrical motor to slow down the turbine. In this part the turbine supplies all power consumed by losses and the resistor

Variables

First Sheet:

- R [Ω] is the internal resistance of the electrical motor
- Rotational speed [rpm] is the rotational speed of the turbine in its shaft.
- Voltage [V] is the voltage in the input of the electrical motor.
- Current [A] is the current consumed by the motor.
- Total Power [W] is the total electrical power consumed by the motor VxI
- Electrical Losses [W] are the electrical losses at the coils of the motor I^2xR
- Mechanical Losses [W] are the mechanical losses of the system calculated by difference.

Second Sheet:

- Rotational speed [rpm] is the rotational speed of the turbine in its shaft.
- Voltage [V] is the voltage in the input of the electrical motor.
- Current [A] is the current consumed by the motor.
- Pressure DIfference Venturi Tube [Pa] is the pressure difference meassure in the venturi tube.
- Inlet Pressure Turbine [Pa] is the static pressure at the inlet of the turbine.
- Total Power [W] is the total electrical power consumed by the motor VxI
- Electrical Losses [W] are the electrical losses at the coils of the motor I^2xR
- Mechanical Losses [W] are the mechanical losses of the system calculated by difference.
- Turbine Power [W] is the power supplied by the turbine.
- Flow Rate [m3/s] is the flow rate passing through the turbine, calculated with the venturi tube. Diameters fo the Venturi Tube are 0.304 m 
at the entrance and  0.19 m at the narrow section.

File Overview
The file only contains this Readme and the experimental data.