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home : community forum September 15, 2014

YOUR OPINION MATTERS. TO SUBMIT A COMMENT, FILL OUT THE FORM AT THE BOTTOM OF THIS PAGE!


Posted: Thursday, August 28, 2014
Community forum entry by: Linda Trandel

The joke on page 7 of the Aug 28 2104 edition. is in very poor taste. It shows complete ignorance of the medical marijuana debate by comparing it to crack cocaine. It is similar thoughts and comments that lead to Prohibition in the 1920's.... and we know how that worked out.



Posted: Wednesday, August 27, 2014
Community forum entry by: Judy Cummings

Earlier this summer I attended a Symposium at the Chicago Botanic Garden on the Monarch Butterfly Crisis. This presentation has been beautifully captured in the following blog post by Evanston resident Gavin Van Horn or The Center for Humans and Nature. I am sending you the link and hope that you might contact Gavin and possibly publish this beautifully written article. http://www.humansandnature.org/blog/question-monarchs


Posted: Wednesday, August 27, 2014
Community forum entry by: Bill McDowell US Solar Network

Regarding J.G. McCullough’s concern about use of ethylene glycol in solar hot water systems: No solar thermal manufacturer allows or specifies ethylene glycol, an anti-freeze typically used in automobiles, in their solar hot water heating system piping. In areas of the country that experience hard freezes during the wintertime, such as the Chicago area, a closed-loop system design that utilizes a solar thermal specific anti-freeze fluid is typically used in order to protect the solar collector piping from freeze bursts. The fluid that is used is a propylene glycol solution and it is non-toxic.
In addition to utilizing a non-toxic propylene glycol fluid in our closed-loop solar water heating systems, Heliodyne also uses double-wall heat exchangers. In many areas of the country, double-wall heat exchangers are required by local plumbing codes to protect the end-users’ potable water supply from contamination in the event that a heat exchanger fails on a solar water heating system. If a double-wall heat exchanger is used and there is a failure on the heat exchanger, the solar collector fluid and the potable water loops will not mix. Even though the fluid used is non-toxic on the solar collector loop, Heliodyne makes sure to adhere to the most strict plumbing and building codes available.
Regarding longevity of solar water heating systems: Heliodyne, which is based in the San Francisco Bay Area has been manufacturing solar thermal systems since 1976 with a focus and engineering design of 25-30+ year life-span. There are many Heliodyne systems that are still in place and operating perfectly from the late 1970s and on. We take pride in being the oldest continuously operating solar thermal manufacturer in the United States.
In calculating the net cost, the $500 enrollment fee is, and has always been, included in the price of the solar hot water system.



Posted: Wednesday, August 27, 2014
Community forum entry by: Robert Bagby

Term Limits:
Heaven-sent Amendment twenty-two
Will stop run of someone overdue
Last hurrah polity
Prevents a dynasty
Plus, end to toadies who ballyhoo.




Posted: Wednesday, August 27, 2014
Community forum entry by: US Solar Network

In Response to Solar Debate
Submitted by J.G. McCullough
Evanston RoundTable – August 14, 2014
Letters and Essays Page 7


Regarding the writer’s concern about use of ethylene glycol in solar hot water systems: No solar thermal manufacturer allows or specifies ethylene glycol, an anti-freeze typically used in automobiles, in their solar hot water heating system piping. In areas of the country that experience hard freezes during the wintertime, such as the Chicago area, a closed-loop system design that utilizes a solar thermal specific anti-freeze fluid is typically used in order to protect the solar collector piping from freeze bursts. The fluid that is used is a propylene glycol solution and it is non-toxic.

In addition to utilizing a non-toxic propylene glycol fluid in our closed-loop solar water heating systems, Heliodyne also uses double-wall heat exchangers. In many areas of the country, double-wall heat exchangers are required by local plumbing codes to protect the end-users’ potable water supply from contamination in the event that a heat exchanger fails on a solar water heating system. If a double-wall heat exchanger is used and there is a failure on the heat exchanger, the solar collector fluid and the potable water loops will not mix. Even though the fluid used is non-toxic on the solar collector loop, Heliodyne makes sure to adhere to the most strict plumbing and building codes available.

Regarding longevity of solar water heating systems: Heliodyne, which is based in and manufacturers in the San Francisco Bay Area has been manufacturing solar thermal systems since 1976 with a focus and engineering design of 25-30+ year lifespan. There are many Heliodyne systems that are still in place and operating perfectly from the late 1970’s and on. We take pride in being the oldest continuously operating solar thermal manufacturer in the United States.

In calculating the net cost, the $500.00 enrollment fee is, and has always been, included in the price of the solar hot water system.

- US Solar Network




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