Feed Water

[Richard SimpsonParticipant @richardsimpson88330]

I must admit Dave, in my time at sea I have come across a huge range of many varied and interesting pieces of machinery.  From slow speed cathedral sized engines four decks high to modern medium speed multi engine installations with incredible levels of flexibility and built in redundancy and many things in between.  Building models has led to research and consequently an interest in marine engineering history, that I continue to enjoy.

Many many memories but possibly the most memorable was controlling a slow speed cathedral engine from the engine platform after the bridge control system failed.  It was a seven cylinder 20,300 shp Sulzer 7RND90 and the buzz of stopping and starting that immense piece of machinery stayed with me.  This is a great shot of one cylinder’s running gear outside the engine manufacturer’s head office:

[noel shelleyParticipant @noelshelley55608]

An interesting observation of this type of diesel engine is the use of a crosshead !

Having investigated the composition of rain water, it very much depends on where you get it from as to how contaminated it will be. Hard water is a bad idea, but using water treatment intended for steel boilers, de ionised water, or rain water, all have their disadvantages,whether these are real or theoretical is the question. Whilst distilled water would seem the best option, cost is the downside.  Noel.

[VicParticipant @vic]

We have an under sink water filter. We use the water from it in our kettle and also the steamer. Strangely the kettle remains largely limescale free until the filter is about 10 months old and needs replacement, whilst the vegetable steamer still collects limescale on the heater? The only difference I can see is that the kettle is stainless steel and the heater in the steamer is some other type of dull grey metal.

We have a dehumidifier but don’t generally use the waste water for anything. I read that depending on the exact unit the waste water could contain small amounts of heavy metals as well as other contaminants.

I use a mixture of filtered tap water and rain water in a fish tank. PH is generally neutral.

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