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Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods.
Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun. Among sources of renewable energy, tidal energy has traditionally suffered from relatively high cost and limited availability of sites with sufficiently high tidal ranges or flow velocities, thus constricting its total availability. However, many recent technological developments and improvements, both in design (e.g. dynamic tidal power, tidal lagoons) and turbine technology (e.g. new axial turbines, cross flow turbines), indicate that the total availability of tidal power may be much higher than previously assumed and that economic and environmental costs may be brought down to competitive levels.
Historically, tide mills have been used both in Europe and on the Atlantic coast of North America. The incoming water was contained in large storage ponds, and as the tide goes out, it turns waterwheels that use the mechanical power to produce mill grain. The earliest occurrences date from the Middle Ages, or even from Roman times. The process of using falling water and spinning turbines to create electricity was introduced in the U.S. and Europe in the 19th century.Electricity generation from marine technologies increased an estimated 16% in 2018 and an estimated 13% in 2019. Policies promoting R&D are needed to achieve further cost reductions and large-scale development. The world's first large-scale tidal power plant was the Rance Tidal Power Station in France, which became operational in 1966. It was the largest tidal power station in terms of output until Sihwa Lake Tidal Power Station opened in South Korea in August 2011. The Sihwa station uses sea wall defense barriers complete with 10 turbines generating 254 MW.

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  1. D

    Do you need a power flush still with new rads

    My Mother-in-law was quoted £1,000 by British Gas to do a power flush on her system as her rads aren't performing well. I was wondering, as 4 radiators need to be upgraded to doubles, would this need to be done if they are drained off and replaced? How does one actually know it needs a power...
  2. E

    Orange spots. Rust. Washing machine or power flush?

    I get orange spots when washing clothes. Please see photo. I think it is rust. I’ve checked there’s no metal in the machine. I have also run a long wash with lemon juice. Neither have solved it. I read power flushing is the answer to rust elsewhere in the system. How can I tell...
  3. M

    Power flush & system corrosion

    In December 2022 (i.e. 5 months ago) I had a full system power flush conducted. Now the previously clear UFH flow gauges are black again. Is it possible that enough internal corrosion could have occurred in this time period? I had a separate plumber out a month ago to test some pipework and he...
  4. J

    REMS Solar push or a KAMCO power flush unit HELP ME CHOOSE

    Ive looked at the tech specs and it seems that the REMS has a lower flow rate but higher pressure at 5.5 bar. the Kamco has a higher flow rate so i understand that will be best for flushing a dirty system, however its maximum pressure of flow is under 2 bar. I wish to use a mashine for...
  5. J

    URGENT what is the best power flush machine and where can I buy it

    what is the best power flush machine and where can I buy it
  6. J

    Radiators top half hot & bottom half cold/warm---to do power flush?

    Hi all, I had my new boiler and 13 radiators installed in July last year, but since installed all the radiators always top half hot and bottom half cold or warm. I know that if radiators top half hot bottom half cold/warm, it indicates there's sludge in the system. But as the radiators were all...
  7. T

    Whether to power flush a 40 year old central heating system?

    I’m currently looking into replacing my 20- year-old Ideal Classic FF 360 gas boiler in a 70s semi and have been getting various quotes for a condensing conventional boiler, as we don’t want a combi. The current boiler works well, we have it serviced every year via British Gas Homecare, but...
  8. CorgiDirect

    USA Kamco CF40 & CF90 Power Flush Machines Now In Stock !

    Kamco CF40 & CF90 Power Flush Machines Now in Stock! Due to Popular Demand. Order Today While Stock Lasts Power Flush Machines - CorgiDirect - https://corgi-direct.com/power-flush-machines-18089-0000
  9. P

    Power Flush after visit

    Hi I have recently had a visit from an engineer as I am covered under a homecare agreement I've had for around 18 years. This was for a leaky draincock valve. When I asked them to add inhibitor due to advice I received on this forum he said he would but then pulled out a pipe clogged with...
  10. T

    Chemical and/or Power Flush?

    Some more plumbing advice, please. I am getting a new boiler installed and this includes a Hot and Cold Chemical Flush of the system. Do I also need a Power Flush or is the Chemical Flush sufficient?
  11. G

    Power flush before blocked heat exchanger renewal ?

    Evening All We are having a new heat exchanger fitted to a Veissmann boiler, the boiler is only six months old, the installers carried out a power flush but only after the boiler had been running for about a fortnight, then after six months it failed to heat radiators to temperature. Viessmann...
  12. A

    How long to power flush

    Hi guys. a few questions. I’ve got a blocked system and am looking at a power flush to resolve it. Heat is getting to the flow tails and into the rads but I’d say at 50% of what they should be. Had a plumber attained and do everything possible ie check valves, TRVs, cleaned out rads with a...
  13. A

    Power Flush advice needed

    Dear all I’m a home owner looking for advice. I recently had a power flush which was unsuccessful at clearing a blocked pipe. I do appreciate these things are not guaranteed. My question is does time taken reflect on outcome? The reason I need to understand this is the company employed...
  14. S

    Power flushing blocked microbore

    I am a homeowner after some advice about power flushing a central heating system with microbore pipes that seem to be blocked. When I switched the boiler on in October, 3 of 12 radiators never warmed up and 2 other radiators became only lukewarm. My plumber concluded the pump in the 11-years...
  15. W

    No Heating and Hot water after 4 weeks, 6 engineer visits, a power flush and new pump - HELP!!! (please)

    We have a Glowworm BBU56F (back boiler). Its well-maintained/serviced and since we’ve been in the property (15 years) only the Thermocouple was replaced in July of this year, otherwise has been running fine. We’ve not had heating/hot water for a month now, and with 2 young kids/unwell missus...
  16. T

    Manual vs power flush, new boiler installation

    Hi, I'm having a new boiler installed as part of grant scheme in a few weeks' time. My GCH stopped working about 7 years ago and I couldn't afford to keep fixing it - at the time my boiler was only about 3 years old, but was told after about 3 fixes that it was sludged up and needed a power...
  17. U

    I Need Your Help! Underfloor Heating Not Working - Flat with HIU

    Hi Plumbersforums Experts, I have a question that I hope the experts in this forum can help me with. Our underfloor heating (water) has stopped working a few weeks ago. We live in a new-build block of flats with a central boiler and an HIU unit in our flat. I have asked two engineers to...
  18. DripsnDropsBognor

    Power flush advice needed

    Hello, Been out to one of my ladies and she has filled her CH system with a leak sealer... Over christmas as she had a pin hole in towel rail. Called me out for other bits and mentioned this I went in to loft and looked on F&E and it's is only about an inch over tank connector and has...
  19. eagleeye

    Worcester filter power flush adaptor

    Does anyone know if you can buy an adaptor to fit on the unions of the worcester filter so you can connect magnaclense power flush machine connections ?
  20. A

    Gas Engineer Spencer Group Plumbing & Heating Ltd

    Plumbing and heating company located in Wolverhampton
Creating content since 2001. Untold Media.

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