Engineering Commons^™

Low Flow Testing, Daniel J. Howes

BioResource and Agricultural Engineering

In arid environments, streamflow enhancement in low flow channels is common. It is challenging to assess enhancement project effectiveness in these channels because of uncertainties in metering (regarding both meters and procedures). The basic equation for flow is:

Q = VA (Eq. 1)

Where,

Q = channel flow rate (e.g., cubic feet per second, CFS)

V = cross sectional average velocity (e.g., feet per second, fps)

A = cross sectional area (e.g., square feet, ft2)

There are three main factors that impact flow measurement uncertainty in natural channels:

1. Flow meter velocity measurements (V)

2. Depth and area measurements (A) …

Gravity Drip Irrigation System, Ryan C. Waldron, Cole R. Presson, Josh L. Plaskett

Mechanical Engineering

A gravity-fed, drip irrigation system prototype has been developed for use in raised garden beds and other small-scale crop irrigation applications. The original developer of the prototype and sponsor of the project, Tina Creel, is seeking to refine it into a functional consumer product through the implementation of technical engineering and standard manufacturing processes. The scope of the project includes the tank support system and supply of water to the sponsors current piping subsystem. It does not include any modifications to the bed, piping system or water tank itself. The target specifications of the system include its load capacity, dimensions, …

Variable Frequency Drive (Vfd) Specifications For Irrigation District Pumps, Charles M. Burt, Kyle Feist, Gary Wilson

BioResource and Agricultural Engineering

This information was compiled by ITRC and includes specifications for standards, warranties, submittals, VFD size, and other technical details to aid districts in the selection and implementation of VFD system.

General: Irrigation Bill Of Consumer Rights, Charles M. Burt

BioResource and Agricultural Engineering

Cal Poly ITRC, together with various irrigation industry leaders and the Irrigation Dealers Association of California, plus with assistance from the California Energy Commission and Pacific Gas & Electric Co., developed the Irrigation Consumer Bill of Rights (ICBR) in 1994.

Drip/Micro Irrigation: Irrigation Consumer Bill Of Rights, Charles M. Burt

BioResource and Agricultural Engineering

Cal Poly ITRC, together with various irrigation industry leaders and the Irrigation Dealers Association of California, plus with assistance from the California Energy Commission and Pacific Gas & Electric Co., developed the Irrigation Consumer Bill of Rights (ICBR) in 1994.

Soil And Plant Moisture Monitoring Systems: Irrigation Consumer Bill Of Rights, Charles M. Burt

BioResource and Agricultural Engineering

Cal Poly ITRC, together with various irrigation industry leaders and the Irrigation Dealers Association of California, plus with assistance from the California Energy Commission and Pacific Gas & Electric Co., developed the Irrigation Consumer Bill of Rights (ICBR) in 1994.

Oiler For Vertical Pump Lineshaft Lubrication, Charles M. Burt

BioResource and Agricultural Engineering

This document provides technical advice for controlling the dripping of oil for oil-lubricated vertical lineshaft pumps for irrigation.

Conditioning Of Velocity Profiles In Pipelines, Charles M. Burt, Pascal Hellmann, Zachary Markow

BioResource and Agricultural Engineering

This paper reports on the testing of a relatively simple flow conditioner for pipelines. This research found that a pipeline velocity flow conditioner that is constructed with an internal cone, having an inside diameter of 80 percent of the pipeline ID, provided the best results. It provided good velocity conditioning at a distance of two diameters downstream of an obstruction. The minor loss is equal to the velocity head of the flow in the original pipeline diameter.

Scada Preventative Maintenance: Reducing The Potential Of Unexpected Failures, Kyle Feist, Zachary Markow, Charles M. Burt

BioResource and Agricultural Engineering

Irrigation district infrastructure utilizing Supervisory Control and Data Acquisition (SCADA) systems can perform a critical service to irrigators, but also present the risk of damage to nearby property and humans in certain failure scenarios. It is therefore prudent to minimize the scope, frequency, and duration of SCADA component failure. However, it is typical for irrigation districts to focus on corrective (post-failure) SCADA maintenance activities, instead of investing in preventive maintenance.

Preventive SCADA maintenance requires budget and labor investment. However, it is anticipated that it is possible to balance the effectiveness and expenses of a preventative maintenance program with some strategic …