Welcome to Appropedia, the sustainability wiki that anyone can edit!

We share knowledge to build rich, sustainable lives.

Create a page Get started editing Browse categories Browse map Advanced search

Appropriate technologies

Explore over one thousand projects on Appropedia. Here are a few selected examples:

Community Action for Sustainability News

Read more

Selected page

Greenhouse closeup on window sill

The capstone project for Queen's University 4th Year Mechanical Engineering Class,"Engineering for Sustainable Development", is to design and construct an Appropriate Technology with a quantifiable engineering result (to see other class projects, click here). I have chosen to construct a greenhouse, review the heat requirement on the system for the whole year; then, based on the materials and conditions selected, review costs associated with this and build a scaled model.

This project is the first step to easy community greenhouse development - the goal of the affordable greenhouse is to:

  • Improve greenhose design and awareness for residential application.
  • Demonstrate the feasibility (i.e costs) of a greenhouse in the winter months and determine the best time to install such a system for optimal crop yield.

Due to the materials selected and the cold Canadian Spring, it is not effective to construct until late April. But with better material selection and innovative greenhouse designs, I am hopeful that constructing miniature greenhouses will become common practice.

The blueprints for the construction of an affordable greenhouse are below; for this greenhouse a single pane Polyinyl chloride (PVC) covered greenhouse was reviewed. Heat losses and calculations were done in MatLab using constants from the Canadian Climate Normals website and sunlight radiation from Queen's University Living Building.

Our users

Find content by users from these organizations:

Help us grow!

Appropedia is created by people like you! Feel free to contribute to Appropedia your original research, projects, current works, observations and wisdom. Improve articles by clicking "edit" on top of any page or section. Our philosophy is: BE BOLD and contribute!

Questions? Comments? Visit the Village pump and drop a note.

Facebook Pinterest Twitter Flickr YouTube