Sunday, August 26, 2012

August 2012 Reports

For those just arrived, this news item is updated each week with any regular reports on performance of the systems in the Peveril Solar house, notably the annual consumption and generation figures. As the Summer 2012 is so horridly grey and rainy, I also mention the 2-year average.  

26 August 2012: It's getting a bit boring reporting the metering every week in summer, because so little happens. There has been no heating requirement since April / May, and the only demand on the heat pump is hot water use, that has little variation unless we have people staying to use more water - not often. Until the winter restarts, it seems that the system has settled down to a House consumption of about 5,030 kWh and a GSHP consumption of 2,985 kWh and it hasn't changed for a long period of weeks. The house consumption has got higher because the contribution from PV was so lousy during the rainy summer. I am worried that this coming autumn will be colder than it was in 2011, and I may see my figures get worse. We shall see.

19 August 2012: We've had a week of withdrawal symptoms (no weekday TV to watch medal winning exploits on...) Football suddenly rushes in to fill the void, and how boring it seems now with the overpaid actors running about for 90 mins, and perhaps only score once. Julian Assange of Wikileaks seems to have filled the newspapers in the UK, Syria continues to rumble on, as does the boring US election campaign. Why can't it be like the British one, all done and dusted in just three weeks? Peveril house... we have started work on the house extension, and I have to order the window. The concreting is done, see other items here about that. Metering wise, we have the disadvantage that last year was so good, solar wise, that figures either hold steady, or slightly worsen. I know that Autumn figures will be bad. The first winter day in 2011 in which the GSHP used more than 12 kWh in a single day was mid December. Oh dear. We won't have another winter like that!
  • House meter holding steady at 5,027 kWh and GSHP meter also holding steady at 2,985 kWh. 
  • PV meter still bad at 3,065 kWh. Not yet enough sun to climb back to the usual level.
  • Sunbox meter 2,564 kWh and Tubes haven't being going for a year yet. 
  • Deep ground temperature is 13.7ºC - I've got used to this being the highest we get. Hopefully, the energy bulb just spreads further. It is higher than last year, even though the summer has not been as good.
12 August 2012: Well, it's been the second week of the Olympics, so this has dominated news stories, day after day. 29 Golds for the GBR Great Britain team! (I presume we could not be called the UK team as this would confuse with the UKR Ukraine team). My best moment, apart from Mo Farah and Jess Ennis, was Andy Murray winning the tennis gold. My worst moment was seeing Victoria Pendleton being faulted because of a wobble that anybody on a bicycle would have done if they were bumped sideways on a bicycle at 50km/hr. Both the start and end ceremonies were great fun but what a pity not to have Eric Claption, Paul Weller and Dave Gilmour at the party. I loved the inclusion of John Lennon and Freddie Mercury, and the use of lighting on the seats to enable the entire audience zone to be made of dynamic coloured pixels.

Elsewhere in the world, Mutton R. Money chose the totally odious Paul Ryan as a running mate. The only good thing about this is that he has gone for the extreme voters, not for the centre ground, and that Ryan's 'Republican Budget' gives loads of evidence of the evil these men could do to their people and to the environment. No longer just the 'trust me' vague platitudes of Mutton. In Northern Iran there was a severe earthquake, blunting much of Iran's pleasure in having done well at the Olympics. What about annual figures for the Peveril Solar house? Having had a reasonably sunny week, there is almost no change.
  • House meter holding steady at 5,003 kWh and GSHP meter also holding steady at 2,978 kWh. 
  • PV meter climbing slightly at 3,089 kWh (averaging this bad year and last year's good one, the biannual average is 3,200)
  • Sunbox meter 2,553 kWh and Tubes haven't being going for a year yet. 
  • Deep ground temperature 13.7ºC - another week above 13º, which is good. It's above 14º much of the day when there is heat going down, but I measure it at midnight on Sundays when the thermal energy bulb has had time to flatten out.
5 August 2012: Another rainy week, so the figures still poor, although if 2013 is a good year, then every week will see excellent progress (just like I did in warm 2011, as it was being compared with cold 2010).
  • House meter holding steady at 5,007 kWh and GSHP meter also holding steady at 2,974 kWh. 
  • PV meter holding steady at 3,062 kWh (in previous 2 years, annual average was 3,330)
  • Sunbox meter 2,524 kWh (2 months were lost in spring 2012) and Tubes haven't being going for a year yet. 
  • Deep ground temperature 13.5ºC.... good.
Taking a time period from 5 August back to 10 May when the combined Tubes and Sunbox were finally working correctly,  I'm comparing this 2012 year with 2011. The Sunbox managed 829 in 2012, and 911 in 2011. With a contribution of 213 from the tubes, the combined solar energy delivered to the borehole in 2012 was 1,042 kWh - so I am grateful to the tubes, and will hope to collect even more if I get the PVT installed later in the year. I need to add another pair of bottlevents to the Tubes system to make it even more reliable.


   Externally, the week has been dominated by the Olympics, with a cascade of gold medals for Britain (of which I witnessed two on saturday). The american writer Gore Vidal died. Aleppo in Syria is the biggest foreign news story, and on sunday night, NASA got their sums and technology right and managed to land the Curiosity rover on the surface of Mars without crashing it. The smartness of the engineers delights and amazes me, as they had the idea of a hovering structure that could be a crane and lower the Rover slowly to avoid damage. The airbag method would not have worked with such a heavy object.

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