Jump to content

nicknorman

Patron Donate to Canal World
  • Content Count

    18973
  • Joined

  • Last visited

  • Days Won

    113

Everything posted by nicknorman

  1. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  2. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  3. Oh yes that’s a very good point which I hadn’t thought of! I’m glad you said that because fitting an EV is on my list of things to do. 2.1bar/30 psi is the pump cut-out pressure. The accumulator should be set to just below cut in pressure, which is likely to be around 15-20psi. So around 15psi is about right for the accumulator, 30psi for the EV.
  4. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  5. The accumulator should be set to a few psi below pump cut-in pressure. The EV should be set to pump cut-out pressure. There is no “right answer” for the size of the EV, the bigger it is, the less stress on the calorifier. But the downside of having a huge one is that after you heat the water and then turn on the hot tap for the first time, the flow out of the tap will all be from the EV until it’s empty, and that water is likely to be cold.
  6. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  7. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  8. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  9. Different pressures. Oh yes, as per PeterF.
  10. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  11. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  12. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  13. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  14. The only thing with relying on the cold water accumulator, is that when the pump cuts out, it is already mostly full. So when the calorifier heats up and water expands, there isn’t much room for the additional volume in the accumulator and so the pressure rises relatively easily/quickly. Whereas with an EV, it is still empty when the pump cuts out and only starts to fill when the water heats and expands. So even if an EV is a similar nominal volume to the accumulator, its effective volume is much greater.
  15. I was born in Birmingham and my first job after school was as a delivery driver around the city. It was a complete dump. Now, 47 years later, it is completely transformed and a really nice city to visit.
  16. Fair enough on your setup, but yes flexi hoses do expand slightly under pressure. Not visibly of course, but it makes a difference to the pressure when they relax. I’ve seen it in action. We are after all talking about checking for very small changes in pressure. As to brake hoses, the reason why you can buy bog standard flexible brake hoses, OR much more expensive fancy ones for racing and performance cars and motorbikes, is that the former do expand a bit under pressure, giving a slightly spongy feel.
  17. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  18. Obviously this is fine in principle, but there are a couple of pitfalls: When you run the gas off from the flexi hoses, the expanding gas in those hoses cools. Then after everything is shut off, the gas which is now cooler than ambient, absorbs ambient heat and thus its pressure slowly increases. And those flexi hoses which had taken a bit of a set under constant high pressure, now relax and over some time, the volume in the hose reduces, thus also increasing the pressure. So there needs to be quite a long stabilising time, I’d say 5 mins isn’t really enough. The risk is that the leak mat
  19. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  20. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  21. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  22. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  23. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  24. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.