Navitron Renewable Energy and Sustainability Forum

HYDRO TURBINES => Hydro Turbines => Topic started by: ecogeorge on June 12, 2019, 10:24:44 PM



Title: Raining........
Post by: ecogeorge on June 12, 2019, 10:24:44 PM
As someone who invested 1k into Harlaw Hydro community hydro scheme a few years ago I logged on tonight to see output.
Can only assume its raining .......... reservoir level constant but power output going up ? ...
http://www.harlawhydro.org.uk/power-meter/#.XQFowbzYq01
 rgds George


Title: Re: Raining........
Post by: Nickel2 on June 13, 2019, 09:03:42 AM
Raining, chilly, lights on, stay in and use electricity?


Title: Re: Raining........
Post by: biff on June 13, 2019, 09:41:36 AM
We normally get all the rain going.
             But weather this past week has been mixed with good sunshine and decent wind. Rain of course but nothing to worry about. Most of the flooding was down south.
     Biff


Title: Re: Raining........
Post by: Tinbum on June 13, 2019, 09:56:49 AM
We normally get all the rain going.
             But weather this past week has been mixed with good sunshine and decent wind. Rain of course but nothing to worry about. Most of the flooding was down south.
     Biff

I'm not sure what to call it but I live in an area that often just doesn't seem to get the the rain when it pouring down all around. I often look at the rain radar and it just sems to disappear when it gets to us.  ???


Title: Re: Raining........
Post by: dan_b on June 13, 2019, 10:11:15 AM
microclimate?


Title: Re: Raining........
Post by: oliver90owner on June 13, 2019, 10:14:07 AM
It says the reservoir level is - 0.88m, so head id down a bit.  They must be throttling back the output as the reservoir is not at constant level (only constant level when input and output are equal or when the reservoir is overflowing).  Generation only around 70% of max, according to the website.  Generation was down to 25kW yesterday early evening!

Biff has certainly not had all the rain!  I won’t need to water the spuds for the next week, I would think!

I was told this morning that central europe is at 38 degrees Celsius.  We are currently at 11 degrees and raining.  Been raining, very heavily at times, on and off for three days now.  More on than off!


Title: Re: Raining........
Post by: M on June 13, 2019, 01:49:36 PM
On the subject of rain and micro-climates, I thought it might be 'fun' to mention what happened in Cardiff (but only a small part of Cardiff) last Friday.

We got a downpour of rain and hail, something like June's worth in about 45 mins. Nothing could cope, the road drainage was never designed for that amount of rain, but everything got blocked up with hail, so the water found other routes.

Here's a pic of the back garden when I was still enjoying the storm:

(https://i.postimg.cc/w78DkZHZ/IMG-2618.jpg) (https://postimg.cc/w78DkZHZ)

The view from the front of the house was far more impressive with a sea of white flowing down the road towards the poor souls living in the road at the bottom. But I can't post a pic, as when I stepped onto the mats in the porch to take a photo, they sank about two inches into water, and I had an 'oh s**t' moment as the threshold piece into the hallway was leaking, and about to be overtopped.

Popped out in the storm with a snow shovel to clear the hail from around the porch so the water could flow away. Then the lightning went off and I automatically started to count elephants (5 to a mile) I got to one (that's one, not one elephant) and the thunder struck, and not like a great AC/DC track, but a second 'oh s**t' moment, and I discreetly withdrew.

Thought I'd got off light, but the rescue I volunteer at got flooded, see pics in news article:

Homes and businesses in Cardiff devastated by overnight flash floods (https://www.walesonline.co.uk/news/wales-news/flooding-cardiff-floods-weather-rumney-16399185)

Sadly my father, who lives about 400m from me, suffered even worse. A road further back and higher up, simply couldn't cope. Water built up, then crashed into the lower backgardens of his road. The water made its way through about 6 backgardens by simply smashing through fences and walls. He has heavy duty concrete posts and wood effect panels, but on one side they were pulled out of the ground, and on the other side they were snapped (steel reinforced concrete).

His house and 3 neighbours had the fun of the water flowing through their properties from back to front. [Note, he isn't in the article, those pics are of damage elsewhere.]

If weather spikes like this are only the start of AGW, then we are in for some serious 'fun' down the line.


Title: Re: Raining........
Post by: A.L. on June 13, 2019, 09:15:31 PM
hello,

I'm not sure what to call it but I live in an area that often just doesn't seem to get the the rain when it pouring down all around. I often look at the rain radar and it just sems to disappear when it gets to us.  ???

Rain-shadow - high ground (mountains) upwind gets the rain before you