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Tracking roasting energy consumption

Afbeelding
    I got a little Fritz!Dect210 device that's able to pass enough kW to feed my FZ94 roaster and now I can track its energy use.The most recent roast of 1700g Ethiopian beans took 1.3kWh.The device provides interesting graphs: Roasting all in all took about half an hour. Warmup starts around 20:04 at full power and Voltage drops from about 232V to 224V. First part of the roast is full power also, then as the heater gradually takes less power, the Voltage rises. After the heating elements shut down, power useage drops steeply and the cooling fan briefly takes some extra power.  On Nov 25 I did one roast, next day two roasts, on Dec 2 one roast that consumed 1.315 kWh Last night room temp gradually dropped and after we woke up the room got warmer. When I started roasting and opened windows and doors, the room cooled down. After the end of the roast I let the roaster cool down and the exhaust pipe blew out hot air from the drum near the Fritz! which assumed the room got quite hot (b

Tije testing mods

Afbeelding
The little closed air roaster got a cleaning after 200kg of beans roasted. Tije modified the air outlet to prevent some beans flying into the chaff collector, improved the probe placement and replaced the steel mesh of the hot air inlet. He temporarily attached a transparent ‘wall’ to observe the flow.

Cooking Neu Namanhoi

Afbeelding
Vimeo:

Cuban espresso

Afbeelding
  On Vimeo: cuba espresso from FrZ on Vimeo .

LONDINIUM: servicing the valves for steam and hot water

Afbeelding
 

Tije's HG One with grind setting ring

Afbeelding
Tije modified his first genaration HG One grinder (which he motorized earlier) to have a grind setting ring somewhat like the later models have.    

Pics of my first LONDINIUM L1-Luxe

Afbeelding
A friend who bought my first LONDINIUM some years ago is passing it on to another close coffee pal and I looked uo my old photos of that dear machine: