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SteamyTea

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Everything posted by SteamyTea

  1. Bobby Sands number was 808080 His hunger striking cell mates' was 892802
  2. Yes please, with names and phone numbers.
  3. I think they can recover the latent heat of fusion from the excess humidity. There are some that have a porous paper element that allows some transfer of moisture, but I don't think there is enough to worry about. Have you thought of putting an extractor hood over the fishtank. Then plumb it into your existing unit.
  4. So glad I never replied, would have got deleted as well.
  5. I would think, without calculating, that variations in the ground makeup, depth of pipework, differences in radii of the loops, water retentions in the soil and any shading on the loop area, would make a larger difference than turbulence within the ground loop.
  6. What does your room by room thermal calculations show?
  7. I worked for a small turbine manufacturer, they made a 5 kW model, cost about £18k 15 years ago. The marketing side wanted to reduce the price, pointed out that if the moving bit was free, they would not get the price much below £12k. You would be better off getting an EV (assuming you drive an ICE car atm). Or integrate a heat pump into you PV and save a few kWh there.
  8. Have you got planning permission for one. Once you have that, then we can tell you small ones are pointless.
  9. What happens if the amount of fluid in the pipes is below the recommended amount? What happens if the heat load needed is only 0.4 kW? Good engineering practice tries very hard to not work at the extreme capability if the equipment.
  10. Have you thought of just putting something like this in a very prominent position.
  11. https://en.m.wikipedia.org/wiki/Navier–Stokes_equations Good luck.
  12. After making an energy and temperature logger.
  13. Water takes the path of least resistance, so can come out in the most unexpected places.
  14. Been listen to Paul Weller's Walls Come Tumbling Down. https://youtu.be/k5HfOipwvts
  15. GSHP have, over the last decade, declined in popularity because of the higher initial cost for only a tiny performance improvement. We also tend to have small gardens in the UK, do borehole drilling is best for most people. The UK has very mixed geology and drilling easily in one place may become really hard just a few miles away. Even down here in Cornwall, with some of the best understood geology in the world, and a £1m to play with, the Jubilee Pool project went disastrously wrong.
  16. So do we. They you would waste less time on here trying to become a Mod.
  17. Or part of the true cost of having pets. https://www.amazon.co.uk/Time-Eat-Dog-Sustainable-Living/dp/0500287902
  18. We have a similar thing here, just the rates are different. There is often schemes set up to trade home grown, last I saw was a Blockchain system. Non last long as energy is way too cheap.
  19. Like Dash Cam, home security cameras will also pick up your own bad behaviour. Today, while enjoying a coffee, the shopping centre security man went to the lavatory. I noticed he had a Vest Cam. Hope he turned it off.
  20. How is that done then?
  21. Not as simple as that. Ideally you would need to add extra insulation, which is hard after a building is sitting on it.
  22. Welcome. Have you checked for leaks/cracks on the outside? Downpipe and gutter problems as well. Also is it possible the roof has failed and water is getting in there, then finding a path to the wall. What construction type is your building?
  23. Yes, those ones may well be, they were less than a quid each. They work OK.
  24. Here is the code I use. Just change the 28-xxxxxxxxxxxx number to your sensors number. You can add more sensors by just copying and pasting in the part relating to the sensor while incrementing the number by one. Then add the sensor number to the "writes to data file" line. #!/usr/bin/python #imports necessary libaries import os, time, datetime #load drivers os.system('modprobe w1-gpio') os.system('modprobe w1-therm') while True: #Sort out the time format dt = datetime.datetime.now() runday = dt.day dt.day == runday #sensor 1 tfile = open("/sys/bus/w1/devices/28-0306979462ca/w1_slave") text1 = tfile.read() tfile.close() temperature_data1 = text1.split()[-1] temperature1 = float(temperature_data1[2:]) temperature1 = temperature1 / 1000 #sensor 2 tfile = open("/sys/bus/w1/devices/28-031097946bbc/w1_slave") text2 = tfile.read() tfile.close() temperature_data2 = text2.split()[-1] temperature2 = float(temperature_data2[2:]) temperature2 = temperature2 / 1000 #sensor 3 tfile = open("/sys/bus/w1/devices/28-030197941c13/w1_slave") text3 = tfile.read() tfile.close() temperature_data3 = text3.split()[-1] temperature3 = float(temperature_data3[2:]) temperature3 = temperature3 / 1000 #sensor 4 # tfile = open("/sys/bus/w1/devices/28-03149794263a/w1_slave") # text4 = tfile.read() # tfile.close() # temperature_data4 = text4.split()[-1] # temperature4 = float(temperature_data4[2:]) # temperature4 = temperature4 / 1000 #opens and reads the time ts = time.time() #sets time to UTC and dd/mm/yyyy hh:mm:ss format UTC = datetime.datetime.utcfromtimestamp(ts).strftime('%d/%m/%Y %H:%M:%S') logfile = '/home/pi/monitoring/data/1wire-%s-%s-%s.csv' % (dt.day, dt.month, dt.year) #creates and opens or appends data to file tfile = open(logfile, "a") #writes to data file tfile.write("%s"%UTC + ",%s"%temperature1 + ",%s"%temperature2 + ",%s"%temperature3 + '\n') #closes data file tfile.close #sleeps for (n) seconds until next reading time.sleep(25)
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