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On Monday, December 15, 2014 7:55:31 PM UTC, Rod Speed wrote:
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Id like to find out if its possible to buy a few solar pv panels, and
take
the feed from that direct to a storage heater or underfloor heating
pad.
Not plug into the grid, or even the house electrical circuit. And not
have the heater or heating coil attached to the mains either to avoid
any shocks etc. Straight from pv to dedicated electric heater.

Corse it is. But a solar air heater works rather better and you get
a lot more heat out of that and is a hell of a lot cheaper too.

It doesnt matter if the heat only comes in the day. Thats when I need
the heat anyways. Ive seen underfloor heating kits. And seperate pv
solar panels. Can the pv panel plug straight into the coil of the kit?

No, because the underfloor heating kits are normally designed
for 240V and you only get 240 from the panels with an inverter.

One reason I ask is that a few months ago I had seen a solar
powered pv panel to underfloor heating kit for a few hundred
pounds online. Ive lost the link, but I know its possible.

That would have had an inverter as well as the solar panels.

What Id like to do Is buy something like that, wrap the
coil in bricks and some sort of cover and get cheap heat.
Any thoughts advice etc?

A solar air heater is a lot cheaper to do,
but not as easy to buy already done.

For instance can the electric output from a pv panel go straight
to the heating coil and trickle feed it. and slowly heat the coil

Electrically, yes, but the heating coil would normally be 240V
and the panels don't produce that without an inverter.

Or does it need an intermediate pulse convertor?

An inverter actually. They are readily available for solar panels tho.

Another option to an invertor is to run the panels in series, producing eg
120v etc. If you had enough panels to do this there would be no point
using an invertor.

Sure, but when the whole scheme makes no sense at all in
the first place, it makes no sense to have that many panels.

And a solar air heater makes a lot more sense that PVs too.

Much better than a solar water heater too, no problem
with a solar air heater freezing up overnight.