|
guydewdney
|
 |
« on: November 13, 2009, 09:58:54 PM » |
|
Like an idiot - I assumed that all immersions were the same. 2 and a bit thread etc etc etc. Nope - the ones in Santon unvented cylinders are a funny fitment.
I need / want a 1kw or so immersion that I can run off my wheel. Anyone seen one? I can't.
For sale - unused 2 1/4" thread 1kw immersion with twin thermostats.... :-(
|
|
|
|
|
Logged
|
|
|
|
|
camillitech
|
|
« Reply #1 on: November 13, 2009, 10:16:12 PM » |
|
Hi Guy, being electrically inept, I may as usual be talking rubbish but is there not away you can use a rheostat or something on your existing one  Please do not chastise me for what may be a totally ludicrous suggestion  I am a Taurus and quite often full of cr4p Cheers, Paul |
|
|
|
|
Logged
|
http://lifeattheendoftheroad.wordpress.com/12kw Lister 11m turbine tower 10 hundred ah 48v battery bank 900' pennstock 8kw woodburner 7kw Lister 6 bladed Rutland 50w of solar 4 and a half Kw inverter 3kw Lister 2 hydro turbines and a Proven in a pear tree :-) Raasay, 57 27 537 N 06
|
|
|
|
guydewdney
|
|
« Reply #2 on: November 13, 2009, 11:12:04 PM » |
|
Nope - star sign gives it away.  You can't reduce the power like that. You cant 'switch it off and on quickly' (modulate) it either - as peak power is over what I can make. It just simply needs to be a 1kw rated heater. |
|
|
|
|
Logged
|
|
|
|
|
ecogeorge
Guest
|
|
« Reply #3 on: November 13, 2009, 11:17:44 PM » |
|
Dont think they did a 1 kw ? think they are 1.5kw - would that do?
|
|
|
|
|
Logged
|
|
|
|
|
guydewdney
|
|
« Reply #4 on: November 13, 2009, 11:18:31 PM » |
|
yeah - where?  mine looks somehting like this  |
|
|
|
|
Logged
|
|
|
|
|
ecogeorge
Guest
|
|
« Reply #5 on: November 13, 2009, 11:23:50 PM » |
|
Don;t recognise the "spanner type " , what is the thread in bsp? would a convention type element do ? (if correct bsp and rating).
|
|
|
|
|
Logged
|
|
|
|
|
guydewdney
|
|
« Reply #6 on: November 13, 2009, 11:28:21 PM » |
|
No - this is the point. this type  is not right. This is what I have for sale new, unused, wrong. The Santon Premier Plus Solar cylinder I have uses another type, which is not available from Santon in 1kw (or 1.5kw) style. |
|
|
|
|
Logged
|
|
|
|
|
Mostie
|
|
« Reply #7 on: November 13, 2009, 11:30:09 PM » |
|
did someone on here not run a 3kw thru a 110volt yellow tranny to reduce the power?
|
|
|
|
|
Logged
|
4x Sharp 175w, Soladin 600, Mitsubishi H.I. split 2.5kw inverter heat pump.
|
|
|
|
Alan
Guest
|
|
« Reply #8 on: November 14, 2009, 07:12:42 AM » |
|
Hello Guy I have some 1.25 inch male B.S.P. 1500 watt and can get hold of 1200 watt if required. Off on a 96 hour day, will try and find your thread size when I return Regards Alan Edit info here but they dont give away the size ? http://www.santon.co.uk/santon/santon.nsf |
|
|
|
« Last Edit: November 14, 2009, 07:25:40 AM by Alan »
|
Logged
|
|
|
|
|
guydewdney
|
|
« Reply #9 on: November 14, 2009, 10:35:48 AM » |
|
did someone on here not run a 3kw thru a 110volt yellow tranny to reduce the power?
P=VI 3000 = 240 x I 3000/240 = I I = 12.5Amps R=V/I R = 240/12.5 R= 19 Ohms. So the heater has a resistance of 19 ohms (assuming it stays basically the same hot or cold) Put 110v on it and we get:- V/R = I 110 / 19 = I I = 5.8 amps P=VI P=110 x 5.8 P = 600 watts But then I have two immersions (I think) so I might be able to double them up... Ill go have a look... edit. no - I have two places - but one immersion (halfway up) with its own dedicated thermostat. Ill see if I can get the size from somewhere. |
|
|
|
« Last Edit: November 14, 2009, 10:56:49 AM by guydewdney »
|
Logged
|
|
|
|
|
Outtasight
|
|
« Reply #10 on: November 14, 2009, 08:42:12 PM » |
|
Ha ha ha... That was me! I did the exact same maths but running it from an inverter the input is 230V and my transformer puts out 115V. I get about 640W out of my 3kW immersion running it through a 4kVA tool transformer. Works a treat as a remote dump load for my solar (back in the days when we could see the sun  ). While hunting around originally for a immersion heater power throttle I found this: http://docs.google.com/gview?a=v&q=cache:oXLWaXDRi9EJ:www.abeltronics.co.uk/pdf/IMM01.pdf+half+power+immersion+heater&hl=en&gl=uk&sig=AFQjCNFo_d646638n650hPh_tUogqIR3pQBut it only works with <2kW heaters and I had a standard 3kW element. They may do another model (but the host web site is down tonight - this is a Google cache page). If you've got two slots for heaters, you could always buy two and run them in series on the 240V from the wheel... That would halve the power without wasting any heat in an external power controller. You'd have to defeat one of the thermostats so that only one of them controlled both elements (or just set the top thermostat much higher than the middle one). |
|
|
|
« Last Edit: November 14, 2009, 08:53:32 PM by Outtasight »
|
Logged
|
|
|
|
|
Mostie
|
|
« Reply #11 on: November 14, 2009, 10:34:41 PM » |
|
knew i read it somewhere, I'm surprised you needed it with that solar garden you have  |
|
|
|
|
Logged
|
4x Sharp 175w, Soladin 600, Mitsubishi H.I. split 2.5kw inverter heat pump.
|
|
|
|
Outtasight
|
|
« Reply #12 on: November 16, 2009, 12:35:35 AM » |
|
I did then as I only had a 1kW inverter. I could just about get away without using it now as I've upgraded to a 3kW inverter (but still only 1.2kWp of PV so it would hammer the battery). So I'll still use the transformer, as running the heater at full power would max out the inverter and not leave any room for other loads (and besides, I only ran 6A flex around the house for the solar circuit  ). The tank is well insulated with its integral foam jacket and a strap on additional jacket and foam pipe insulators to reduce leakage at the exit pipe at the top. So any heat that does get pumped into it slowly during the afternoon is still there for the evening. We can manage during the day with only cold water as we only really use hot water at night. |
|
|
|
|
Logged
|
|
|
|
|
