8VSB Option Card

Sam Fopma, Justin Krosschell, Bjorn Vaagensmith

Sencore, Sioux Falls, South Dakota

In digital television transmission systems there is a need to monitor, switch, and correct errors in the digital signal path. In a project sponsored by Sencore, Inc. (Sioux Falls, South Dakota), the Dordt student team developed a 8VSB/QAM tuner-demodulator option card for use in such applications. The card was designed to maintain functionality of a previous version of the card that had reached the end of its production life, while improving input sensitivity and programmability for use in additional Sencore products. The project work focused on the hardware design and the printed circuit board layout for the card. The prototype boards then were tested by Sencore engineers in preparation for production release.

Air Compressor System Energy Recovery

Aaron Coon, Lucas Teeuwsen, Brian Westra

Sponsor: Adams Thermal Systems

The aim of this project was to save a significant amount of money spent annually on electricity and to reduce the amount of natural gas consumed by Adams Thermal Systems in Canton, South Dakota. This was achieved by specifying a more efficient air compressor system and by heating the building with waste heat from this air compressor system. Upon eventual installation of the system, estimates are that the net annual savings will be $89,000 in electricity and maintenance as well as 2 million cubic feet of natural gas.

Automated Parasiticide Dispenser

Dana Hanenberg, Hessel Kielstra, Chris Van Roekel

Sponsor: Valley Veterinary Clinic

Sponsored by Valley Veterinary Clinic in Rock Valley, this project was a proof of concept design of an automated system that will dispense onto a cow's back a dose of antibacterial spray that accounts for the animal's weight when it is held in a livestock chute equipped with a scale. The system uses digital signals produced by the scale head to drive mechanical functions of the applicator, while not inhibiting the veterinarian's normal routine. The design goal is to avoid either underdosing the animal or overdispensing and wasting the transdermal parasiticide, which can occur in the current practice using a hand held spray gun that is usually set for the average weight of the animals in the group being processed.

Biomass Cook Stove

Stephanie Argo, Ian Kuipers

Dordt College engineering department

A top-lit up-draft (TLUD) cook stove uses pyrolysis to gasify biomass. This gasification results in low emissions and lower fuel consumption than a traditional "three-stone" open fire. The design of this TLUD biomass cookstove follows principles of appropriate technologies for use in rural Zambia by recognizing social, economic, and environmental constraints.

Garage Light Relay System

Dan Jansen, Evan Westra

Sponsor: Dordt College engineering department

The Garage Door Light Relay enables a residential garage door opener to turn on the conventional lights in the garage to better illuminate the space and increase safety. The system uses wireless transmission to send signals from the garage door opener(s) to a receiver that operates a relay to control the lights while maintaining the functionality of the existing wall switches. It is designed to be installed without special tools or knowledge.

Household Sump Pump Cover

Jesse Groenewold, Peter Hamstra, Alice Yoo

Sponsor: Dordt College engineering department

A design improving upon typical household sump covers, this sump cover provides easy access to the sump basin while maintaining a safe seal against radon gas and permitting simple integration of a radon abatement system.

Hydraulic Jump Flume

Joel Pertzsch, Chris Van Schepen, Devin Williams

Sponsor: Dordt College engineering department

An open channel fluid flume was designed and constructed for use in demonstration and experimentation of hydraulic jump and other phenomena in fluid mechanics and civil engineering. The design of the apparatus was inspired by other commercially available flumes. The project was completed for a fraction of the cost of commercially available units, and was constructed such that additional equipment can easily be implemented in the future.

M2 Lift System

Ben Gesink, Jordan Herrema, Jeff Stolk

Sponsor: Dordt College engineering department

In order to safely and conveniently accommodate the lifting, moving, and storage of lab equipment and materials in the engineering department's high bay lab, this team analyzed aspects of the building structure and then designed two separate lift systems for integration into the existing lab space. The trolley hoist system that has now been installed includes an S8 x 18.4 main beam with a 19 foot span at an height of 12.5 feet, with a load capacity of 4000-lb. A separate 250-lb capacity pallet lift system was also designed (for future installation) to safely lift lighter loads to an elevated storage shelf in the lab.

Panel Hoist Redesign

Adrian Fintelman, Daniel Pond

Sponsor: Interstates Control Systems

The purpose of this project was to design a lifting mechanism to assist shop staff at Interstates Controls in the installation of heavy electrical pre-assemblies into vertical enclosures during the electrical panel construction process. Based on analysis of the modified engine hoist already in use, the mast, boom, and boom extension were redesigned, and counterweights and upgraded casters were installed to meet the strength, balance, and reach requirements and achieve 1,000 pound maximum load rating.

Vacuum Ethanol Distillation

Dan Brouwer, Nick Campbell

Sponsor: Dordt College engineering department

A small scale ethanol still was designed typed to produce 180-proof fuel-grade ethanol, and to take advantage of renewable energy heat sources such as solar heated water, or combustion of sorghum by-product, or even wood. The electronically controlled prototype process operates at a vacuum of 25 in. Hg, and distillation temperatures of less than 130 °F. and thus the device can utilize some cheaper materials such as PVC pipe and vinyl tubing. The overall goal was to demonstrate the possibility of small-scale localized fuel ethanol production in areas where the usual liquid fuels may have high cost and low availability.