Newsletter Archive

E-News Issue #72

3 June 2004

Website Upgrade

We are continuing to add significant amounts of information to our website. If you want to get on your soapbox and express an opinion, check out our Forum-BBS. At your suggestion, we will soon add a What's New Section, so you now can see what is actually new!

I am also keen to expand the educational content of our website. So if you have any articles, essays or theses that you wrote and would like published on our site, please let me know. We can accept most formats including Word, Word Perfect and PDF. I am happy for you to leave your name and contact on it, if you like. I am interested in articles about Renewable Energy, eg, solar, wind, hydro, methane production, composting toilets, solar cookers, etc.

I am also building up our Links page, so if you know of any good websites you'd like to suggest, let me know. For example, I recently added a link where you can download a free 240-page book for Renewable Energy teachers (grades 6-12).

Nature Loo Composting Toilets

We now stock Nature Loo’s whole range. It is possible to purchase individual components if you are making up a 'homemade' or especially modified toilet for your self – eg, you can purchase the pedestal, etc, separately on request.

"CPAP" Constant Pressure Air Pump

With our ageing population, a condition called Sleep Apnea is becoming more prevalent. A typical symptom is excessive snoring, which can be very disturbing to any partners.

CPAP machines (Constant Pressure Air Pump) are sometimes prescribed to alleviate the condition by delivering a constant pressure of air through a hose and mask while you sleep.

Unfortunately, these devices use a reasonable amount of power. We measured the current on the 12V side of a 230V inverter using a Resmed model. It used 5.1 amps when running at 9cm of water pressure. The Wanderer Magazine recently published an article where the current on another unit was measured at 6 amps.

A 5-6 amp current at 12 volts for several hours is a reasonable load – if it is running for say 8 hours each evening, you would need around a 120W Panel to keep your battery charged. This would, of course, depend on how much sunshine you were getting in your area.

The good news is that the article’s author found a 12 Volt model that only uses 1.5 amps which is about a quarter of the power (depending on the setting). They can be purchased through Sleep Easy.

If you want to use one on a Renewable Energy system (perhaps on a mobile home), we suggest you first seek appropriate medical advice. Then you can contact us for advice about how to keep it powered up!

Cheers from Dave and all the RPC crew.

Dave Lambert (Director)

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We install solar systems in Northern NSW and Southern QLD.


QLD:
Gold Coast (from Coolangatta to Southport), Nerang and Hinterland (Beaudesert) and out West (Warwick, Stanthorpe, Killarney)


NSW:
Northern NSW (Tweed Heads to Yamba, including Evans Head, Byron Bay and Ballina); the Far North Coast Hinterland (Grafton via Lismore to Murwillumbah) and out West (Casino to Tenterfield, including Drake and Tabulam, as well as Woodenbong and Bonalbo)

For larger system we also go up to Brisbane or down to Coffs Harbour and even Glen Innes. Other places by arrangement.