Practivistas Chiapas/HW: Difference between revisions

This is a page for conveying homework assignments for HSU Chiapas Appropriate Technology courses July and August, 2010. Assignments are due before class starts on the day denoted below.

Week 1 - July 5, 2010

1 - lunes

Topics covered: Introductions, Syllabus design, ???

Assignments due

• read the notes at Jottings on appropriate technology on differing definitions of Appropriate Technology.

1 - martes

Topics covered: Microhydro and projects

Assignments due

1. Find and record a photo and location for each of two local example ATs from Chiapas in groups of two
   • We will pick topics in class.
   • For each of the two topics, answer the following on a piece of paper:
     • Brief description such as type and application.
     • Location (address or coordinates)
     • Justification as Appropriate Technology based on a definition of AT.
     • Issues with its appropriateness based on a definition of AT.
     • Notes, such as phone number, if applicable.
   • We will be posting these as a future assignment.
2. Select and bring your top three project choices in order of preference
3. Start Appropedia user page
   1. Select and copy the text below
   2. Click your username (after logging in) in the upper right of Appropedia
   3. Paste the text
   4. Replace Capitalized words with your own
   5. Preview, summarize and save
   6. Add your photo (see this screencast for help on how).
   • Feel free to improvise - See the User:UserName pages listed under Category:Engr305_past_students for examples

Copy the following the code

 [[Image:IMAGENAME.JPG|thumb|left|CAPTION TEXT]]

  Nombre: TU NOMBRE
  Teléfono en Parras: TU TELÉFONO
  Ubicación en Parras: TU UBICACIÓN
 
 ===Intereses en Tecnología Apropiada===
 *INTERES#1
 *INTERES#2
 
 ===Experencia en Tecnología Apropiada===
 *EXPERENCIA#1
 *EXPERENCIA#2
 
 [[Category:HSU Chiapas Program 2010]]

1 - miércoles

Topics covered: Microhydro and projects

Assignments due

1. Pmax
   • Pmax for 220GPM and 100ft
   • Pmax for 80GPM and 200ft
2. Find units for K for the 3 other Qs
3. Read Microhydro power

1 - jueves

Topics covered: Otros Mundos, working in the field, Criteria, Literature Review

Assignments due

• Microhydro power with 3" pipe and the other givens.

1 - viernes

Topics covered: Field trip - Las Abejas

Assignments due

Week 2 - July 12, 2010

2 - lunes

Topics covered: Lab day - Microhydro

Assignments due

• Literature review

2 - martes

Topics covered: Improved cookstoves

Assignments due

• Criteria
• Microhydro lab

2 - miércoles

Topics covered: Fieldwork

Assignments due

• Create a login to http://openpario.mime.oregonstate.edu/
• Join the project - http://openpario.mime.oregonstate.edu/projects/hsuchiapas2010
• Consider making your own project. See http://openpario.mime.oregonstate.edu/projects/engr380/issues for an example.

2 - jueves

Topics covered: Lab day - Improved cookstoves

Assignments due

• Project description

2 - viernes

Topics covered: Lab day - Improved cookstoves

Assignments due

Week 3 - July 19, 2010

3 - lunes

Topics covered: Biogas

Assignments due

• Lots of project work

3 - martes

Topics covered: Lab day - Biogas

Assignments due

• Do the math that makes these sentences equivalent.
• Photo, video or drawing 1 kg, 1 meter, 1 N, 1 joule, 100 W, 1 kWh

3 - miércoles

Topics covered: Lab day - Biogas

Assignments due

3 - jueves

Topics covered: Project day and Quiz at night

Assignments due

• In your group from yesterday's assignment
  • How many tortillas/time equal 100W
  • A more creative equivalent to 1 kWh

3 - viernes

Topics covered: Lab Day - Rainwater Catchment

Assignments due

Week 4 - July 26, 2010

4 - lunes

Topics covered: Fieldwork

Assignments due

• Post at least one useful link per team and one vocabulary word related to appropriate technology per person at HSU_Chiapas/shared_resources.

4 - martes

Topics covered: Fieldwork

Assignments due

4 - miércoles

Topics covered: Rainwater

Assignments due

• Read on Rainwater
• Calculate the rainwater that can be caught in a given month from a 900 square foot house with a total roof area (from a steep roof) of 1300 square feet. The given month for your area has a precipitation of 3.2 inches. You have installed a 4000 liter tank and are not planning on using any water for that first given month.
  • In addition diagram the the necessary components for that rainwater system.
• Optional - do this problem set on unit conversion.

4 - jueves

Topics covered: Appropriate Technology

Assignments due

• Read http://rael.berkeley.edu/sites/default/files/old-site-files/1997/Kammen-Dove-Mundane-Science-1997.pdf

4 - viernes

Topics covered: Wind

Assignments due

• Final project - visual inspection
• Show your work on the following questions from class:
  1. If you have a wind turbine with three blades, each 4 meters long, what distance does the tip of each blade travel in one full revolution?
  2. If this turbine is rotating at a rate of 42 Revolutions per Minute (RPM), how long does it take to make one full revolution?
  3. Based on your answers from 1 and 2, calculate how fast the tips of this wind turbine are moving through the air.
  4. If the wind is blowing at 6 meters per second, what is the tip speed ratio of this turbine? Use your answers from questions 1-3 to help solve this problem.
  5. According to the “optimal” tip speed ratio for this three-bladed turbine, are these blades moving too fast or too slow?
  6. An offshore wind turbine with three 60 meter blades rotates at a leisurely 12 RPM. The wind is whipping along at 18 meters per second. What is the tip speed ratio for this turbine? How does this compare to the “optimal” tip speed ratio for this turbine?
• Read on Energy from the wind