Welcome to the Solar Collector
Brainstorming and Development Page!


 

Home

Hot Air Collector

Hot Water Project 1

Hot Water & Space Heating

Solar Electric

Solar Construction 101

FAQs

Best Collectors

Simply Solar
Register Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 3 of 3      Prev   1   2   3
gbwillson

Avatar / Picture

Registered:
Posts: 2,123
Reply with quote  #21 
The only reason I could see the need for ducts is a short 12'"-18" stub at the exhaust so the air velocity can be more accurately measured. 

With 4 collectors, one should always be an empty box, while the other 3 units can try out various configurations to achieve the best BTU output. So the students will have to understand that there will be a tradeoff for having a long path through the collect. A longer path leads to higher output temps, at the cost of lower CFM/BTU output. 

I know you only have each group for a few weeks so time is limited, but once the group has discovered a design that gives the best BTU output, you might challenge them with the task of comparing that unit to other designs such as backpass, can or tube, and various matrix or screen type collectors.  

I know as a student at their age I loved classes such as yours. I remember learning about middle rockets by building and launching them during class time. 

Greg in MN

stmbtwle

Avatar / Picture

Registered:
Posts: 2,536
Reply with quote  #22 
A length of flex might be good for demonstrating the effect duct resistance has on the collector, if you want to go that far.

__________________
Willie, Tampa Bay
Gordy

Registered:
Posts: 119
Reply with quote  #23 
I did not realize he only had them for a short time. So prolonged duct testing may not be possible, it does at least needs to be discussed as part of optimizing a successful solar collector build.
__________________
Gordy,
Minnesota
matlocc

Registered:
Posts: 61
Reply with quote  #24 
I actually have 8 collectors. When this is the total focus of the class I can do all of that.
Currently, I am easing this into the class.  The regular class the students choose any topic that they want to learn about (within reason) and have seven weeks to learn the history, economic /environmental effects, how it has moved about the planet and provide a visual demonstration and or perform experiments. Then present a 10 minute presentation on their topic.
Some of the topics that have been covered and were neat:  catapults, solar panels, solar cookers, soap, dolls, shoes, makeup, chewing gum, crystal growth and  (All of the previous the kids made their own to demonstrate) also the effect of air pressure in a basketball and how it affects shooting.
Gordy

Registered:
Posts: 119
Reply with quote  #25 
Sounds like a neat class. [thumb] Should take away some of the boredom of the forced / mandatory curriculum.
__________________
Gordy,
Minnesota
stmbtwle

Avatar / Picture

Registered:
Posts: 2,536
Reply with quote  #26 
As solar is a growing industry, you might suggest that the school consider some more advanced courses in solar, as electives.


__________________
Willie, Tampa Bay
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

 

web statistics