Author: polishmess

Solar Water Heater

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Solar water heaters are a great idea!  Let’s get this to work!  Here’s how it ‘should’ work.

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Solar Installation

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Here is the back of the solar panel.  We are on our way!

There are nine panels arranged (wired) in three sets of three panels; each individual set is wired in series, and the three sets are wired in parallel to each other.

When you wire in series, voltage adds; when you wire in parallel voltage does NOT add (amperage adds which allows for more loads on the system because there is more ‘volume’ of electricity).

Each individual set of three will have an output of approximately 85 Volts of Direct Current (VDC), ±20%. This results in a range of output from 68 – 102VDC (this means individual panels are 22 – 34VDC) . Output will depend on sun and weather conditions. The three sets in parallel will also have the same voltage output, since they are in parallel (but the three sets allow for enough amperage supply required).

Making Dye

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Cottage-scale industry makes very concentrated dye baths because they mix their washing right in there so the silk yarn does not absorb as much dye through the solution.  This is cheaper and better for them, but produces darker wastewater which has a larger impact on the environment.  Since I am working at a medium-scale industry we have to reproduce the dye bath.  Here is Babu measuring out the dye, Narasimhamurty cutting the soap, and Narayanaswamy dissolving the soda– all to be mixed together in 50 liters of water– I’ve also tried 100 liters and it seems to work the same.