From d1df7d0dfccc3b19817050f09eabd001bd090658 Mon Sep 17 00:00:00 2001 From: Nicolas Bornand Date: Tue, 24 May 2016 22:36:22 +0200 Subject: add basic concepts for challenge --- 100l-challenge/main.md | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 100l-challenge/main.md diff --git a/100l-challenge/main.md b/100l-challenge/main.md new file mode 100644 index 0000000..36afa95 --- /dev/null +++ b/100l-challenge/main.md @@ -0,0 +1,25 @@ +# 100l Challenge + +## Main ideas + +- Standardized containers (50gal drums), shipping container analogy. +- Produce several batches slightly shifted in time. +- Use electric heating to automate stages where the temperature must me maintained constant. + +### Heating + +c_p water = 4180 J * kg^-1 * C^-1 +heat 40l from 20 to 100° = 4k*40*(100-20) = 25'600kJ +mean 7h10 with 1kW ! without losses (5min/°C) +typical plug => 10A => 2kW (what about wash machines's ones?) + +- Probably gaz heating will be required + +### Containers + +- Where to find/buy them ? + +### Electronics + +- Purpose build controllers vs sensors + microcontroller + actuator +- SSR = solide state relay, analog switching would be best \ No newline at end of file -- cgit v1.2.3