File:BatchSolarHeater.JPG
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[edit]DescriptionBatchSolarHeater.JPG |
English: A solar heater taken from the design noted in "Earthship Volume 2:Systems and components" by Michael Reynolds. The solar heater should be initially positioned perpendicular to to spring or summer sun (equinox) if used as is or at a 90 degree angle from the mirror targeted at equinox sun. Water intake and outlet are to be equipped with valves. Can be set-up so it is totally gravity fed and requires no pumps, ... Can be easily build DIY at low cost. Only usable in areas with allot of sun (subtropics, ...). Originally designed for showering (but may accommodate other uses if hooked up to the houses' piping system).
For the elevation; the initial design by Michael Reynolds simply placed the water heater at an angle equal to "the line of the roof". However, the optimal angle differs for each location, and even during the coarse of the year (see http://www.macslab.com/optsolar.html ). Thus the solar collector is best placed on a adjustable (tiltable) platform. In addition, it is also best that the platform can be rotated to the sun, to "track" the sun during the day. Both are not essential for showering, ... since a person can simply change his lifestyle to shower at a moment when the collector has warmed up the most. For other purposes (connecting the system to ie the hot water system) a rotatable/tiltable platform is advised. In regards to the hot/cold water inlet; this is correct, though noticable different from other solar collectors. This because I wanted the collector to also function with water that wasn't pressurised (ie cold water simply flowing into the collector via gravity, aswell as out via gravity). This can not be done if inlet/outlet are switched. If you were to change the hot/cold water inlet/outlet, then you could only shower for say 1 minute and then the hot water no longer flows out as it doesn't reach the upper outlet no more (water mass drops during showering). Thus, this setup is for this purpose the best one. However, since hot water rises to the top, as is, this does give problems with circulating (pressurised) systems since the hot water outlet is placed entirely at the bottom. However for showering, this doesn't matter since you can simply wait until the entire tank has warmed up sufficiently (the "colder water at the bottom" thus still being warm enough for showering). I guess that a thermometer would need to be included for this though. To resolve the hot water/cold water issue with the circulating (pressurised) systems, the hot water outlet and inlet needs to be simply swapped when using these collectors for this purpose. |
Date | |
Source | Own work |
Author | KVDP |
Licensing
[edit]Public domainPublic domainfalsefalse |
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
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current | 16:37, 28 August 2008 | 2,448 × 2,008 (311 KB) | Genetics4good (talk | contribs) | {{Information |Description={{en|1=A solar heater taken from the design noted in "Earthship Volume 2:Systems and components" by Michael Reynolds. The solar heater should be positioned perpendicular to to spring or summer sun (equinox) if used as is or at a |
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Image title | KONICA MINOLTA DIGITAL CAMERA |
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Camera manufacturer | KONICA MINOLTA |
Camera model | DiMAGE Z6 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/3.5 |
ISO speed rating | 50 |
Date and time of data generation | 18:07, 28 August 2008 |
Lens focal length | 5.859375 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.4.5 |
File change date and time | 18:24, 28 August 2008 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 18:07, 28 August 2008 |
APEX brightness | 5.7 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode, red-eye reduction mode |
Color space | sRGB |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 35 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Macro |