Re: [RE-wrenches] cogeneration

Darryl Thayer Wed, 23 May 2012 13:27:10 -0700

Hi Mark, I have had a brush with a Honda CHP Combined Heat and Power unit, a 1 kW unit I think, and with a Marathon "ecopower" a 4.9? KW, I was not the installer, These were a while back, 4 and 2 years I think. One house the customer was keeping maticulus records and had a value calculation. (honda unit) The house had multiple systems, and it turned out to be a significant challange to figure out what should be running. >From memory both put out about 2x kW the heat as they did electricity. The marathon put out quite a bit of heat, and could be used as a furnace in a highly insulated house. Both units had an inverter output and coupled well with a battery based inverter system. (I connected through an Outback situation. I did not connect through AC coupling to a DGI inverter. The CHP acted as the grid and the outback acted Bimodal, nothing special no problems.

I may be able to find the system diagrams, but they are simple.

BTW I am preparing a CHP - PV proposal for off grid this week,

From: Mark Dickson <m...@oasismontana.com>
To: 'RE-wrenches' <re-wrenches@lists.re-wrenches.org>
Sent: Wednesday, May 23, 2012 10:59 AM
Subject: [RE-wrenches] cogeneration

Have any of you had any experience or heard of experiences with the residential cogeneration systems such as the Freewatt? Sounded like there was a lot of potential a few years back, but have heard little since. Any reason you couldn’t tie one into an off-grid Sunny Island system?

Best regards,

Mark Dickson,

NABCEP Certified Solar PV Installer ™

Oasis Montana Inc.

Mark Dickson, Certified Solar PV Installer

From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of William Dorsett
Sent: Wednesday, May 23, 2012 7:31 AM
To: 'Jeff Lahl'; ' RE-wrenches '
Subject: Re: [ RE-wrenches ] Solar NGO's in Haiti ??

Jeff, I greatly appreciate your offer to help us think through putting a system together in Haiti . For some time we will be prioritizing the loads not so much for the orphanage but for the doc and his wife. They are like so many who buy into a project before processing that they are the ones needing to modify their lifestyles….one of their priorities at our last meeting was air conditioning. So it is going to take a reality check on equipment costs for them to come to grips with actually living there. Even then these people might have enough money to stick out as the Cadillac in a barrio. As we get closer to a list of indispensable loads (even at that you’ll probably have a better idea of what can be bought in Haiti ), then we’ll know what size battery bank, inverter, etc and I would like to get back to you on the hardware and other design considerations that might be unique to Haiti .

Bill Dorsett

Sunwrights

Manhattan , KS

From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeff Lahl
Sent: Friday, May 18, 2012 7:47 PM
To: RE-wrenches
Subject: Re: [ RE-wrenches ] Solar NGO's in Haiti ??

Hi Bill,

If you want to contact me offline, we can refer you to a local dealer in Port au Prince who ussually has Outback and Rolls products in stock and I believe he currently has some Solarworlds as well. For a one-off project you're probably on the right track. Importing and going through customs in Haiti is definately a pain and can be time-consuming. You may pay more $ locally but will pay less in problems, delays and frustration. (SELF has been working there since before the quake)

Jeff

j...@self.org

Jeff Lahl | Project Director

Solar Electric Light Fund | www.self.org

p 808-874-5706

f 808-874-5706

________________________________

energy is a human right™

Change a life. Change the world.

From: William Dorsett <wmdors...@sbcglobal.net>
To: re-wrenches@lists.re-wrenches.org
Sent: Friday, May 18, 2012 10:37 AM
Subject: [ RE-wrenches ] Solar NGO's in Haiti ??

A doctor in town has started an orphanage in Haiti and while it has connection with government power for a few hours per day, it of course is not reliable and is very expensive. We are still in the stage where we are trying to figure how to shed as much load as possible. I have no territoriality in this project and will help provide system design and hardware at my cost, however apparently tariffs can be huge so we may want to source as much as possible in country. Can anyone tell me which solar NGO’s (SELF?) you’d recommend to tell us what hardware (deep cycle batteries) is available in country? And if it is a simple UPS system, storing from the grid, what grid-connected battery chargers does everyone recommend for a fairly large battery bank? Used to be Todd chargers and I wondered if they’ve corrected problems or passed on to some other company.

Thanks for your suggestions.

Bill Dorsett

Sunwrights

1715 Leavenworth

Manhattan, KS

785/539-1956 Home/Office

Bill Dorsett

Sunwrights

1715 Leavenworth

Manhattan, KS

785/539-1956 Home/Office

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Re: [RE-wrenches] cogeneration

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