HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
<<  <  Page 3/5  >  >>
tekochip
User Rank
Platinum
Re: It all comes down to cost..
tekochip   8/17/2012 12:10:12 PM
NO RATINGS
Not much to it, really.  I took an off the shelf electric mower and added some panels to charge batteries.  I've since replaced the very heavy SLA cells with a 10AH NiMh pack, and that makes the machine much easier to navigate.  It takes about three good days to recharge the cells, so sometimes I mow on a particular day to make sure I get a good solar harvest.

Ann R. Thryft
User Rank
Blogger
Re: Solar-window cells?
Ann R. Thryft   8/17/2012 11:52:08 AM
NO RATINGS
William, windows may not generate a lot of power on their own. But with conventional electricity produced by fossil fuels, we have been conditioned to think of only a single power source technology. With alternative energy sources, the idea is often to combine different power sources and with multiple energy inputs. I've become more aware of that mix living out in the forest with electricity for lights and powering the ceiling fan (for cooling and heating), a woodstove for heat, and propane for hot water. So the idea of getting energy in a single building from solar and wind, for instance, and from window films plus panels on the roof, or those plus passive solar collection methods, makes sense.

Ann R. Thryft
User Rank
Blogger
Re: Solar-window cells?
Ann R. Thryft   8/17/2012 11:44:26 AM
NO RATINGS
I agree with Mydesign about the investment in active PV solar being worth it over the long run. However, homeowners have to be able to afford the several thousands of dollars investment and not everyone can do it. Regarding solar panel thickness, yes, that's one of the whole points of this project.

Ann R. Thryft
User Rank
Blogger
Re: It all comes down to cost..
Ann R. Thryft   8/17/2012 11:38:55 AM
NO RATINGS
tekochip, you converted your lawn mower to solar?! Please tell us how.

Mydesign
User Rank
Platinum
Re: Solar-window cells?
Mydesign   8/17/2012 4:45:01 AM
NO RATINGS
1 saves
William, all the natural energy conservation methods require a little bit upfront investment and we can have a fair ROI in long term. The immediate ROI is less because, we are using the generated power for domestic use and it has to be calculated according to the tariff sheet provided by the local energy distributor. I had done a similar calculation before going for solar power to my house and it found that it will take minimum 20 years for cover up the initial investment cost. But have the proud that am using natural resources and no need to worry about tariff hike or power cuts.

Mydesign
User Rank
Platinum
Thin Solar panel
Mydesign   8/17/2012 4:34:08 AM
NO RATINGS
1 saves
Ann, the normal Solar panels are of thick in size and it cannot be used other than fix in terrace of buildings. If the thickness is less and of comfortable size, they can be fixing in outside walls and window doors. So most of the people may prefer and in turn more natural energy can be produced.

William K.
User Rank
Platinum
Solar-window cells?
William K.   8/16/2012 9:55:46 PM
NO RATINGS
This is an interesting concept indeed. But aside from the discussions about relative efficiency, how much useful power is a window-cell going to produce? Then, consider the logistics of transporting the power from a window that can open, because some folks do open windows for ventillation at times. Finally, consider the expense of the hardware needed to convert whatever power is produced to a voltage-current level that can actually be useful.

My whole point is that what we have here is an interesting developement that may not be "worth the effort" to implement it. At that point it becomes valid to question how much effort and resources should be expended in that direction.

Ann R. Thryft
User Rank
Blogger
Re: Another reason windows key to energy bill savings
Ann R. Thryft   8/16/2012 12:28:35 PM
NO RATINGS
All kinds of passive storage methods have been developed, many of them in the 70s and 80s, some more recently, Most of them derive from building designs that are thousands of years old. This is not new technology.

Ann R. Thryft
User Rank
Blogger
Re: Another reason windows key to energy bill savings
Ann R. Thryft   8/16/2012 12:26:13 PM
NO RATINGS
I don't think a smart grid is needed. Some of the original solar power designs in the 70s were passive: the power generated is used by the building that generates it. You don't need a smart grid to do that.

Ann R. Thryft
User Rank
Blogger
Re: Another reason windows key to energy bill savings
Ann R. Thryft   8/16/2012 12:25:29 PM
NO RATINGS
Thanks, williamlweaver. Many readers don't realize how low solar efficiency conversion rates are in terms of percentages.

<<  <  Page 3/5  >  >>


Partner Zone
Latest Analysis
Eric Chesak created a sensor that can detect clouds, and it can also measure different sources of radiation.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Practicing engineers have not heeded Yoda's words.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
Rockwell Automation recently unveiled a new safety relay that can be configured and integrated through existing software to program safety logic in devices.
More:Blogs|News
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service