Jo describes in detail the design and building of a large
thermosyphon solar water heating system for a hospital in Pakistan.
A fascinating story about taking on a big project in unfamiliar
surroundings.
The system provides 224 sqft of collector in two banks. Each
collector bank thermosyphons the solar heated water to a storage tank
located above and between the collector banks. Heat is transferred
from the thermosyphon storage to to the hospital using a heat exchanger
in the tank.
The entire system, including the collectors, was built with local
materials and local labor. Some of the materials we take for
granted at the local Home Depot are not so easy to find where this
system was built and one of the challenges was finding good local
substitutes. In addition to describing in detail how the system was
designed and built, Jo describes the Arduino based temperature logger
that tracks and logs temperatures a many key points on the system.
Here are the full details from Jo on the
system... (pdf)
This is Jo's very interesting blog on the system and life in this area
of Pakistan... Be sure to have a look at some of the
weekend road trips through the mountains -- the whole blog makes a very
interesting read. Thanks very
much to Jo for sending this in!
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