From 9eec245a4943f9f83c39d2a495f86f43a6d0ac35 Mon Sep 17 00:00:00 2001 From: Torsten Ruger Date: Sat, 17 Apr 2021 15:24:22 +0300 Subject: [PATCH] started table --- README.md | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 8755058..ae20ee8 100644 --- a/README.md +++ b/README.md @@ -1 +1,30 @@ -# fan_control \ No newline at end of file +# Fan Control + +Trying to decide which fan to use and how to control it. + +# Test + +Basic maths says even some 80, but definitely 92mm PC fans should move enough +air in a standard 15m2 room, ie change the room air in 2 hours. + +Since lower rpm usually means quieter, we are also testing 120mm. + +## List of fans + +All tested fans are on the quiet side. Some have it in the name, but they are +all under 20db under full load. Some have pwm control built in, which i am +thinking is less relevant than i thought. + +In my setup i am testing with a Pi Pico and measuring with a **telephone**, +from about 50cm and 2m. So not too accurate. + +15m2 at 2.5 m height is about 20m3 / h for compliance. + +Fan | mm | V | mI | Wire | rpm | m3 | db | 50cm | 2m | Notes +---------|------|-----|-----|------|------|-----|----|------|-----|----- +Zephyr | 60 | 12 | 110 | 3 | 2000 | 17 | 18 | 50cm | 2m | Notes +Zephyr | 80 | 12 | 160 | 3 | 1400 | 47 | 14 | 50cm | 2m | Notes +Zephyr | 92 | 12 | 140 | 3 | 1300 | 57 | 14 | 50cm | 2m | Notes +Zephyr | 120 | 12 | 180 | 4 | 1400 | 81 | 15 | 50cm | 2m | Notes + +# Decisions