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Session 9. Site Selection and Preparation[edit | edit source]

Total time: 1 hour
Objectives: To locate and prepare a site for a solar dryer
  To identify and list criteria for selecting a site for a solar dryer
Resources: See Phase IV: Session 8, "Shade Mapping and Solar Siting"
Materials: See Phase IV: Session 8, shovels, hoes, rocks or blocks for foundations, newsprint and felt-tip pens

Procedures:

Step 1. (5 minutes)

Present the session objectives and outline the activities.

Step 2. (15 minutes)

Have the participants list the basic criteria for the selection of a site for a solar dryer.

In full sunlight during the time of year that the dryer will be used

Step 3. (45 minutes)

Have the participants form their construction groups and prepare the ground, clearing it of brush and scrub if necessary.

Trainer Notes

The site selection process should include the preparation of shade maps as described in Phase IV: Session 8.

Session 10. Construction of Solar Agricultural Dryers[edit | edit source]

Total time: 16 hours
Objectives: To use various tools in the construction of solar agricultural dryers
  To build a solar agricultural dryer
  To develop a complete explanation of the solar agricultural dryer
Resources: Attachment V-8-A, "Materials Price List"
Materials: Tools and materials as specified in the participants' designs Procedures:
Trainer Notes

This 16-hour session allows much latitude for individual trainer styles. It follows a format similar to the construction sessions for pedal/treadle power in Phase III and the solar water heaters in Phase IV. The following notes are here to give some guidance and share some experiences that have worked well during our training programs. The session does not have to happen all at once. Since it is a 16-hour session, it should be complemented with other sessions, such as Health & Nutrition, The Role of the Volunteer in Development and other Core Technology sessions, and the following solar dryer sessions: Practical Drying Tips (Phase V: Session 15), Dryer Assessment and Modification (Phase V: Session 17) and Cost Benefit Analysts (Phase V: Session 18). See the phase calendar. It is helpful, in fact, to spread the construction time over as many days as possible, because the participants will then have more "spare time" to discuss their projects and their problems outside of session time. Six or eight hours of the day give the participants sufficient time to set up, build and clean up.

Step 1. (Approximately 14 hours)

Have the participants form construction groups and build their solar dryers.

Trainer Notes

At the beginning of each construction period, have the participants discuss the events of the preceding day. Focus the discussions on the group dynamics and problem-solving methods that are being used by each group, what's working and what's not working, etc. This should take 15-25 minutes, depending on how many issues need to be brought up. Remind the participants of how many hours remain in the construction part of the phase and that some time near the end of the phase should be spent on the development of a presentation for their device. When time begins to get short, encourage the participants to focus on the essential tasks only, and to divide them among group members to help speed up the process. During the construction periods, keep in touch with how the groups are proceeding, taking time, when necessary, to show people how to properly use and care for tools. Don't intervene every time the group or an individual makes a mistake. Mistakes are an important part of the learning process. Intervene only if the safety of the group is in danger or if a certain decision will prove fruitless and take a large amount of time away from the group. Explain that any group finishing one project may go on with another small project, begin preparations for the presentation of their device or research other types of solar dryers. Allow 10-20 minutes at the end of each construction period for cleanup of the work site and shop area. At the end of the final construction session, plan about half an hour for a thorough cleaning of the work site and shop area.

Step 3. (Approximately 2 hours)

Have the participants prepare for the final presentation of their solar dryers. Provide them with relevant hints or guidelines.

Session 11. Issues and Methods in Development and Diffusion of Appropriate Technology[edit | edit source]

Total time: 4 hours (approximate)
Objectives: To compare and discuss general appropriate technology research and development policies
  To identify and discuss specific techniques and potential difficulties related to the diffusion of technology in developing countries
Resources: Jequier, Appropriate Technology: Problems and Promises, pp. 69-80
Materials: Newsprint and felt-tip pens
Trainer Notes

This session will require considerable preparation in the following three major areas: Resource Material - Obtain a copy of the Jequier book for each participant (see bibliography). If this is not possible, a handout should be prepared which includes a summary of the essential points brought out in Chapter 6 of the Jequier book. Volunteer Participant/Facilitator - Beginning at Step 5, this session provides an excellent opportunity for a participant to practice facilitation skills. If you ask one of the participants to facilitate, it will be necessary to provide a thorough overview of the session in advance. Also, be certain to allow time at the end of the session to give feedback on the facilitation skills. Panel Discussion - Steps 5 through 9 of this session call for the participation of 3 to S guest panelists. Ideally, these panelists should be currently involved in development work and should represent a variety of perspectives (i.e., agency level work, community level work, work with women, work with men, etc.). You will need to select, invite and orient these panelists well in advance of the date of the session.

Step 1. (10 minutes)

Present a brief introductory overview of session objectives and procedures.

Step 2. (15 minutes)

Distribute the resource book (Jequier, Appropriate Technology: Problems and Promises) and ask participants to read Chapter 6, pp. 69-80.

Step 3. (15 minutes)

Discuss the reading material, focusing on the concepts of "centralization" and "decentralization" of the diffusion of appropriate technology.

Trainer Notes

Some suggested points to emphasize during this discussion are: The present system of research and development is geographically and administratively centralized in many countries. There is a need for local control (decentralization) in order to provide for community-based research and development of appropriate technology. Central governments need to support technological innovation on a national level to promote wide and active participation of all sectors of the population. Decentralization fosters local initiative and self-reliance.

Step 4. (20 minutes)

Have the participants generate a list of 5 or 6 general questions that will be used to help focus the panel discussion. Post the list on newsprint.

Trainer Notes

Emphasize the importance of keeping these questions as general as possible in order to allow spontaneity of the panel discussion. Some suggested questions include: What efforts are being made to decentralize technological research and development in your country? Are there organizations in your country that could provide support and/or assistance to appropriate technology volunteers? What are some effective techniques for facilitating community-based technological development? What are some effective ways of supporting existing indigenous technological development? What are some difficulties which an appropriate technology volunteer may encounter when dealing with local values, beliefs and organizational policies?

Step 5. (15 minutes)

Announce a 15-minute break and explain that the panel discussion will begin immediately afterward.

Trainer Notes

During this break, arrange the room so that the panelists will be seated where they can see the posted discussion questions. If a participant has volunteered to facilitate the panel discussion, he/she should assume the role at this time and greet the arriving panelists, providing them with a brief summary of the proposed discussion procedures.

Step 6. (10 minutes)

Reconvene the group and introduce each of the panel members.

Step 7 (15-25 minutes)

Ask each of the panelists to speak for approximately five minutes regarding their roles and duties as development workers.

Step 8. (60 minutes)

Open the panel to questions from the audience.

Try to keep the questions centered around the general questions developed in Step 4.

Step 9. (40 minutes)

Thank the panelists for their participation and explain that following a 40-minute break, the participants will reconvene in order to summarize the session's activities.

Trainer Notes

During this break, you may find that participants want to speak individually and informally with certain panelists. This informal dialogue should be encouraged since it can provide an opportunity for additional questions and clarification. If this informal dialogue is animated and flowing well, you may omit Step 10.

Step 10. (30 minutes)

Conclude the session by returning to the questions developed in Step 4 and asking participants to discuss any specific approaches provided by the panelists.

Session 12. Natural Cooling[edit | edit source]

Total time: 2 hours
Objectives: To discuss the relationship between heat transfer and natural cooling principles
  To identify and describe various natural cooling techniques and devices
  To discuss the different types of natural cooling techniques used in indigenous architecture throughout the world
Resources: Leckie, Other Homes and Garbage
  Wright, Natural Solar Architecture
  Bainbridge, Natural Cooling Methods in California
  Attachment V-12 "Natural Cooling Scenarios"
Materials: Chalkboard and/or newsprint and felt-tip pens

Procedures:

Step 1. (5 minutes)

Present the objectives and describe the session activities.

Step 2. (40 minutes)

Draw the natural cooling matrix (See below) on the chalkboard and have the participants fill it in. Encourage discussion, comments and questions.

Trainer Notes

The natural cooling matrix includes the three types of heat transfer (conduction, convection and radiation - See Phase III: Session 16/Heat Transfer) and the two ways a structure (house, building, etc.) can remain cool by "shielding" itself from any one of these types of heat transfer and/or by "shedding" heat in one of the three ways listed:

  Shield Shed
Conduction    
Convection    
Radiation    
Some examples are:

Conduction shield: insulation Conduction shed: living underground Convection shield: window or shutter Convection shed: chimney effect Radiation shield: shading device Radiation shed cooling pond Keep the examples related to housing or other building design.

Step 3. (10 minutes)

Have the participants describe and discuss other natural cooling devices they may know about.

Trainer Notes

These might include: natural refrigerators, cooling ponds, evaporative coolers, etc.

Step 4. (25 minutes)

Have the participants form four small groups. Distribute one scenario from Attachment V-4-A to each one of the groups and give them 25 minutes to develop a sketch or drawing of the natural cooling devices and techniques used.

Step 5. (25 minutes)

Reconvene the large group and have a representative from each small group describe the natural cooling devices and techniques that they developed.

Step 6. (15 minutes)

Facilitate a discussion of the application of natural cooling designs in-country.

Trainer Notes

Focus the discussion by asking: Which of the devices and techniques described in your "scenario sketches" might be applicable in your country of assignment? Which would not? Why? What cultural factors, beliefs or values might enhance or impede their applicability?

NATURAL COOLING SCENARIOS

  1. Your Club Med Cruise is shipwrecked. You swim ashore and plan to stay for awhile. The island to which you swim is uninhabited, 35° C (95° F) and 90% humidity with biting bugs. Trade winds come from the west every afternoon. What type of shelter would you build to stay as cool as possible?
  2. You and some friends want to get away from it all. You parachute from a commercial jet into an area that you think will be nice. However, it turns out to be a hot, dry desert. Hot days (50°C - 120°F) with cool nights (10°C - 50°F). The ground is a hard sandstone material with a deep gorge nearby. There's water in the gorse but not much wind. You can dig into the sandstone fairly easily. What would be your shelter?
  3. Your car runs out of gas on a remote road in the Hindu Kush mountains. You and your friendly bus-mates decide to set up a home. You are situated on a rocky south-facing slope, with some trees. The winds blow strongly every afternoon. It's about 50°C (120°F) with no rain expected for months. The nights are cold (10°C - 50°F) and there's lot; of sun. What type of house would you decide upon?
  4. You and your friends end up in the middle of a jungle, 30°C (85°F) and 85% humidity. The wind doesn't blow very often. You're south of the equator, it's very shady and you decide to stay. What type of house would your group decide upon for maximum comfort?

Session 13. Approaches to Health Systems[edit | edit source]

Total time: 2 hours
Objectives: To present and discuss various health care concepts and approaches
  To develop a list of guidelines for self-help community health systems
  To discuss the role of the volunteer in community health efforts
Resources: Refer to Phase III: Session 13, "Appropriate Technologies for Health"
Materials: Newsprint and felt-tip pens
Trainer Notes

The presentations made in this session are the result of an assignment given to the participants in Phase III: Session 13, "Appropriate Technologies for Health."

Procedures:

Step 1. (5 minutes)

Present the session objectives and outline the activities.

Step 2. (1 hour, 20 minutes)

Have the participants form their interest groups and give their presentations.

Trainer Notes

Be sure a timekeeper is appointed, and that the presentations are limited to ten minutes each. Encourage questions, comments and discussion after each presentation.

Step 3. (35 minutes)

Have the participants develop a list of guidelines for self-help health programs and for the role of the volunteer in such efforts.

Trainer Notes

Post the suggested guidelines on newsprint. If the group needs assistance, some suggestions are: Locally-based and -operated programs Integration of local practitioners Volunteers as facilitators, not providers

Step 4.

Conclude by having participants discuss ways in which they might apply these guidelines in their work as Peace Corps Volunteers.

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Created May 21, 2022 by Irene Delgado
Modified August 28, 2023 by Irene Delgado
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