Mechanical and Electrical Engineering Portfolio

SKILLS RELEVANT TO COMPANY SUCCESS

ELEMENTS

THEORY. Possesses the knowledge

necessary for problem solving.

ANALYSIS. Capable of experiment design

and conduct, able to gain results from data.

MECHANICAL AND ELECTRICAL ENGINEERING GRADUATE, ALTERNATIVE ENERGY FIELD.

PERSONAL STATEMENT.

Persistent and dedicated engineer recognized for quick

and efficient learning, creative problem solving, and

effective project management. Passionate about green

technology and eager to build on experience in alternative

energy industry. Looking for a challenging and varied

position composed of system level mechanical and

electrical work with hands-on components at an exciting

workplace. Highly interested in nuclear power, energy

systems for hybrid vehicles, innovative energy systems.

Enclosed are various professional samples that are

representative of the skill set that I possess and view as

an asset to the engineering discipline, in the areas of

design, prototype builds, and testing.

Marissa Bieger

DESIGN AND IMPLEMENTATION. Brings

project from idea phase through design and

manufacturing, meeting customer and

company goals.

OPTICAL EFFICIENCY

TESTING Determining feasibility of the use of

fiber optics in transmitting sunlight over

distances. Testing was performed by

isolating each component in the system

to determine its contribution to the

overall light loss, such as lenses,

mirrors, and the fiber optic cable.

COMPONENTS

Source:

Flexible point light source

Light collimation (to simulate

sunlight):

Convex lens

Concentration:

Fresnel lens

Redirection:

Mirror

Fiber optic cable

Measurement

Integrating sphere

Luminance meter

ENTIRE SYSTEM

ISOLATING FRONT SURFACE REFLECTION LOSS

USING FIBER OF

NEGLIGIBLE LENGTH TEST PLANS

UBC STRUCTURED SURFACE PHYSICS LAB

Venetian blind-shaped array normalizes

sunlight by rotating mirrors based on

solar altitude

Compound Parabolic Concentrators

(CPCs) linearly focus sunlight for entry

into greenhouse

Inlet and outlet fans provide

temperature and CO2 control

Double-glazed anti-reflective glass

windows, reflectively lined, send light

into greenhouse

Polystyrene provides greenhouse

structure and thermal insulation

Shelving unit holds light pipes above

algae basins

DESIGN GOALS AND CHALLENGES

Effective insulation and sealing,

variable air flow ventilation

system

Ease of access to algae basins,

modular design

LIGHT

TEMPERATURE

ACCESSIBILITY

Scaled prototype model of an insulated,

net-zero energy greenhouse concept.

The project goal is to develop and

market a greenhouse that utilizes

optical concentration elements to

reduce the overall surface area of

windows, thereby increasing the

insulated area and decreasing overall

heat loss. This prototype was designed

for algae growth as an alternative fuel

source.

INSULATED NET-ZERO

GREENHOUSE

Uniform light distribution over four trays of algae, capture and redirect sunlight into greenhouse core, maximize

optical efficiency

UBC STRUCTURED SURFACE PHYSICS LAB

PHILIPS COLOR KINETICS

THERMAL

CHARACTERIZATION

POWER SUPPLY TESTING

0.0 20.0 40.0 60.0 80.0 100.0 120.0

T1a

T1b

T2a

T2b

L1

L2

Temperature (°C)

Power Supply at 24°C Ambient

Original Configuration

Added Drip Tray

Inverted Power Supply

Test setup to verify safe thermal

operation of active cooled power supply

design. Verified design was taken

through beta level build and into

production. Thermocouples were

assembled and thermally attached to

vital components and data was gathered

over time using a DAQ. FULLY ASSEMBLED UNIT DESIGN

RESULTS

POWER SUPPLY TEST SETUP