Posted by Ulysses on June 24, 2008, 10:40 am
> >
> > >
> > >.
> > >>
> > >> A custom cut piece of tempered glass would be a good alternative but
it
> > >likely
> > >> will cost more than the panel. I would not use regular glass unless
> there
> > >is
> > >> absolutely zero chance of hail where you live.
> > >>
> > >If the rest of his panels have normal glass, why not use laminated
glass?
> > >
> >
> > Because laminated glass breaks just like regular glass. The only
> difference
> > is, the pieces don't go flying. Neither tempered glass nor Lexan will
> break
> > unless the hail is the size of Volkswagen and tempered glass may not
break
> > even then.
> >
> But if the rest of his panels are normal glass he will have 2 broken ones
> anyway.
> And with tempered glass it just might break itself ;)
> The question I was really asking was (as I am thinking about biulding a
> solar water heater and am wondering what material would be best for the
> front) if there is something about laminated glass that makes it less
> suitable than polycarbonate? I'm talking about the wave lenghts they pass
> here. As I can get glass or lam but as yet have no idea of the price of
poly
> here.
> Thanks
I'm going to build one too (just as soon as I finish a zillion other things)
and I was thinking about using 6-8 smaller pieces of glass--kinda like
French windows. A small amount of light will get lost in the shadows from
the frames but glass is fairly cheap and it could be made so a broken
section would be easily replacable.
Regular glass filters *some* UV and I know that acrylic filters a slightly
different frequency of UV and I don't know if one is better than the other
for heating water etc. but I have read several times that glass works.
Posted by Bob F on June 24, 2008, 11:46 am
>>
>> >
>> > >
>> > >.
>> > >>
>> > >> A custom cut piece of tempered glass would be a good alternative but
> it
>> > >likely
>> > >> will cost more than the panel. I would not use regular glass unless
>> there
>> > >is
>> > >> absolutely zero chance of hail where you live.
>> > >>
>> > >If the rest of his panels have normal glass, why not use laminated
> glass?
>> > >
>> >
>> > Because laminated glass breaks just like regular glass. The only
>> difference
>> > is, the pieces don't go flying. Neither tempered glass nor Lexan will
>> break
>> > unless the hail is the size of Volkswagen and tempered glass may not
> break
>> > even then.
>> >
>> But if the rest of his panels are normal glass he will have 2 broken ones
>> anyway.
>> And with tempered glass it just might break itself ;)
>>
>> The question I was really asking was (as I am thinking about biulding a
>> solar water heater and am wondering what material would be best for the
>> front) if there is something about laminated glass that makes it less
>> suitable than polycarbonate? I'm talking about the wave lenghts they pass
>> here. As I can get glass or lam but as yet have no idea of the price of
> poly
>> here.
>> Thanks
>>
>>
>>
> I'm going to build one too (just as soon as I finish a zillion other things)
> and I was thinking about using 6-8 smaller pieces of glass--kinda like
> French windows. A small amount of light will get lost in the shadows from
> the frames but glass is fairly cheap and it could be made so a broken
> section would be easily replacable.
> Regular glass filters *some* UV and I know that acrylic filters a slightly
> different frequency of UV and I don't know if one is better than the other
> for heating water etc. but I have read several times that glass works.
>>
The acrylic may well insulate better than glass.
Posted by Vaughn Simon on June 24, 2008, 4:26 pm
>>
>> Regular glass filters *some* UV and I know that acrylic filters a slightly
>> different frequency of UV and I don't know if one is better than the other
>> for heating water etc. but I have read several times that glass works.
>>>
> The acrylic may well insulate better than glass.
I hate to sound like a nag, but would you nice folks please take a second to
trim, leaving just enough quoted text to keep things in context?
Thanks
Vaughn
>
Posted by Ulysses on June 25, 2008, 12:47 pm
> >>
> >> Regular glass filters *some* UV and I know that acrylic filters a
slightly
> >> different frequency of UV and I don't know if one is better than the
other
> >> for heating water etc. but I have read several times that glass works.
> >>>
> >
> > The acrylic may well insulate better than glass.
> I hate to sound like a nag, but would you nice folks please take a
second to
> trim, leaving just enough quoted text to keep things in context?
> Thanks
> Vaughn
> >
> >
I'm not sure to whom you are refering, but if it's me I try to clip but
retain enough of the previous message so if someone did a Google someday and
only read my post it would contain enough information for them to know what
I was talking about.
Posted by Jim Wilkins on June 25, 2008, 9:14 am
> The question I was really asking was (as I am thinking about biulding a
> solar water heater and am wondering what material would be best for the
> front) if there is something about laminated glass that makes it less
> suitable than polycarbonate? I'm talking about the wave lenghts they pass
> here. As I can get glass or lam but as yet have no idea of the price of poly
> here.
My solar water heater is at ground level, easily accessible. The
glazing is just old glass salvaged from a garage door. I close the
insulated covers at night and place a piece of clear polycarbonate
roofing over it when thunderstorms are predicted. That's all, and it's
enough.
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> > >
> > >.
> > >>
> > >> A custom cut piece of tempered glass would be a good alternative but
it
> > >likely
> > >> will cost more than the panel. I would not use regular glass unless
> there
> > >is
> > >> absolutely zero chance of hail where you live.
> > >>
> > >If the rest of his panels have normal glass, why not use laminated
glass?
> > >
> >
> > Because laminated glass breaks just like regular glass. The only
> difference
> > is, the pieces don't go flying. Neither tempered glass nor Lexan will
> break
> > unless the hail is the size of Volkswagen and tempered glass may not
break
> > even then.
> >
> But if the rest of his panels are normal glass he will have 2 broken ones
> anyway.
> And with tempered glass it just might break itself ;)
> The question I was really asking was (as I am thinking about biulding a
> solar water heater and am wondering what material would be best for the
> front) if there is something about laminated glass that makes it less
> suitable than polycarbonate? I'm talking about the wave lenghts they pass
> here. As I can get glass or lam but as yet have no idea of the price of
poly
> here.
> Thanks