Solar hot water system...bit of boosting!

Late last year we installed an evacuated tube solar hot water system. I have found the system we installed awesome to date!

Site-specific features of our system include:

• having the system mounted on a north-facing rack. This ensures the system works to its maximum potential, particularly during the winter months.
• a booster when the system doesn't achieve adequate heat through the roof mounted system. For our system we chose to have a mains electricity booster.
• having my booster attached to an overnight tariff. 

The last couple of weeks have brought me some awareness to weather conditions that will challenge the solar component of my system. In the last two weeks we have had overcast weather, with occasional showers. In addition to this inclement weather, we are now entering winter where the sun is positioned further in the north in the sky during the day. All of these factors contribute to lower efficiency in all solar systems, when compared to these systems' performance during prime summer sun positions and certainly has resulted in some diminished performance of my system.

As a result of this cooler, wetter and gloomier weather the water tank that stores my hot water did not maintain a temperature much over 23 degrees. As a result, morning showers were a little cooler than one would consider comfortable and a little shorter than usual (good though for the water level in our rain water tank). But thanks to the boosting system, we flicked the switch and by the time we woke up the next morning we were back to a stable hot water tank temperature of 65 degrees.   

This one night of boosting was adequate and the next day I turned the booster off and the roof mounted tubes managed to kick into doing their job for the rest of the week due to some sunny weather.  Pin It

Another cool book club

I have just bumped into the very technological savvy Royal Institution of Australia. This seems to be a powerful source of useful scientific information available to the general public and includes many fantastic resources, with many of them being online.

One of their fantastic initiatives is their book club. Unfortunately, I don't think this is online, but for those in Adelaide you can regularly go along to the Science Exchange to participate in these book club sessions. For those of us not in Adelaide, the RIAus website (past events) lists the books to be discussed each session and this provides us all an opportunity to seek out some great science reads.

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Quote from Jim Hightower - a way forward

I just listened to an interview with Jim Hightower, a fomer Texan (USA) politician, and found some of his principles very interesting. Some of political positions would traditionally be considered opposed to my current political views. However, Jim proposes many sensible ideas and considers bringing people together by linking them with issues of commonality.

Here is one of Jim's quotes from the interview describing his political position. 

"...fairness, justice and opportunity...."

I certainly believe if all of our politicians framed their policies in this manner our communities and businesses would all be better off and there might be some holistic consideration of our environment. 

I say, bring forth sensible people in politics and positions of power.

 

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More weeds in the yard!

Since we have been in our place nearly a year it was time to tackle some of the larger tasks we have been putting off. Chainsaw in hand, a number of umbrella trees and African Tulip trees were in our sights. These two species are weeds here in south-east Queensland. They are quickly spread throughout the environment by our lovely native birds, which eat their seeds and fly elsewhere poop out the seed and voila a new tree sprouts! Basically, these species have the ability to out-compete our native tree species, through quick establishment, prolific seeders and lots of helpful native birds assisting their movement. 

We removed three semi-mature African tulip trees and about five umbrella trees from the bottom of one of our paddocks. All we did was chop them off at the base and pile the top half of these trees in a big pile (will chip later). We will then monitor these stumps for re-growth and if required undertake some additional treatment (maybe salt).

Here are some piccies of these two offending weeds. 

African Tulip Tree

Umbrella Tree

In addition, to chain-sawing the trees out, I choose to remove a small patch (about 5m x 1.5m) of broad-leaf paspalum. This is a shade-tolerant, non-native, hardy grass species, which out-competes many of our native grasses. I employed the assistance of a fork and just loosened the soil around the base of each individual outcrop and removed them to the domestic waste bin once out of the ground. I did this action about three weeks ago and so far no new outcrops of this grass have sprung up in the area of 'treatment'. 

 

 Broad-leaf Paspalum

 
Hope these treatment options hold and with my revegetation money I will look to establish a bit of a native cover crop/midstorey to replace these weed species and provide some additional protection for my overstorey eucalypts.



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Success!

Recently I applied for funding to my local council as part of their Landholder Environment Grant initiative. The Council received hundreds of application and awarded over $300,000 in grants. The big activities in my proposal were weed management works and revegetation activities. 

Due to the number of applicants most proposals were not fully funded, which was the case for my application. However, I was successful in securing $650! Woo hoo! Council has specified this money is to be spent on 250 native species tubestock and 50 bales of straw mulch, as outlined in my proposal.

250 native tubestock won't go far in revegetating the southern paddock on my property, but I certainly consider that all contributions will go a long way to making things happen.

Last night, I have forwarded a species list to my local Bushcare nursery to request a stocking rate estimation for each of the species I have proposed and request what sort of timeframe they could supply these tubestock to me. Once this information is in hand, I will be able to plan my planting day!

So exciting! So as they say, you've got to be in it to win it and let the fun begin!

I will post photos as we go through the process and hopefully it will inspire you to either apply for a grant to undertake something you've been meaning to do at your place or alternatively just think about what native plantings would suit your block.

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Koala....threatened in Australia

The Australian government has now listed the koala as a vulnerable species at the national level. This listing has specifically nominated populations of koalas in Queeensland, the Australian Capital Territory and New South Wales as those requiring "government" protection. The koalas that live in these areas face threats from habitat destruction, vehicle strike and dogs as a result of urban expansion and the Commonwealth listing aims to address these threats.

What does this listing mean for most people? Nothing, actually. Where this legislation comes in, is when development is proposed in the areas where koalas are now considered threatened. If such, development has the potential to significantly impact on koalas, the proposal needs to forwarded to Commonwealth government for their consideration. 

Populations of koalas around the rest of Australia are not considered to be facing the same threats as those listed in the new Federal government decision. And in fact in some circumstances the koala is so prolific that they are actually creating environmental devastation in the areas in which they live. The koalas in the broader Australian continent are therefore not considered under this legislation.

My interest in this decision, is whether this listing will truly have an impact and bring about a reduction of the habitat loss in these listed areas. To date, Queensland's koala conservation legislation has had little on ground success in curbing the decline in koala populations, particularly in south-east Queensland. 
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This is where your plastic rubbish goes!

http://vimeo.com/25563376

Please watch this film trailer! 

I don't know how people can't be moved by such things. 

This is the impact of our modern lifestyles.

Make a difference!

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