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Establish the cost of all the machinery and heating per minute #1015

goatchurchprime opened this Issue Dec 23, 2018 · 0 comments


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goatchurchprime commented Dec 23, 2018

Apparently the electricity bills for the heating are costing more than we're spending on 3D printer filament.

Why do we know the cost of filament per metre, but not the cost of the heating box running per minute?

What is the cost of the laser cutter per minute, given that we can monitory it in realtime? Power varies by 3x so etching is not as energy intensive as cutting.

Where is the electricity meter? We could get a rough calibration of the cost of each of our systems (lighting, heating, laser power, pot of coffee, baseline) by running each of these individually for a set time out of hours and recording the difference. The numbers should correspond somewhat to the ratings on the devices.

From the unit costs, the secondary effect costs are the time it takes to raise the temperature by 1degree. This could feed through to a rule that the heating can be put on only when there are N people in the room out of hours; or you've got to pay for it like you would pay for a packet of crisps.

For comfort, we should make available N-1 heated waistcoats:

None of this is high tech (like OCR of power meter). Just very simple accountancy and curiosity.

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