Friday, November 20, 2009

We now live in a JAHUS

Progress:
We are sitting in our livingroom watching TV. The temperature is a comfortable 22-23C and there is fresh air coming from the ventilation system (without a sound). I have checked and the heat provided by the heatpump (and distributed by the ventilation system) is more than enough to hold the desired roomtemperature, without the help of our wall-mounted panel heaters (with thermostats). We have waited quite a long time for this moment, but I can already say thet our first JAHUS experience is definitely a pleasant one.

Let me first turn the clock back to ca 4pm when we arrived home from work. Expectations were high, but unfortunately there was disappointment - again. Yes, the heatpump was running - but also making quite a lot of noice. I left it like that, and "rushed" in to the ventilationroom to verify that the ventilation system was running. From my intro you understand that nothing had been done in the ventilationroom today.

I called the project leader and asked him why the electrician had done nothing in the ventilation room. He promised to check and call me back. Few minutes later he called back and said that he wasn't able to get in contact with the electrician. I asked him if we could use a power cord extension from the nearest outlet to be able to start the ventilation aggregate. He promised to check with the ventilation specialists, and after a while he called back and said that the specialist would return to Kolbotn and start the system for us.

Then, when the specialist arrived - he only used a few minutes to get the system initialized and started. They still have to program the system (different effect during daytime versus night) and calibrate the system (heatpump and ventilation system working together), but finally the JAHUS system is running :-)

After some testing I found a program that seems to work quite well without the extreme noice and variations we experienced initally. The heatpump needs more adjustments, but that can wait for the experts to take care of on Monday.

Events:
Following the biodiesel discussions in Norway.....

"Dutch first in Europe to adopt green tax for cars"
Drivers will have to pay per kilometer driven in a bid to end chronic traffic jams and cut carbon emissions. The system, which will use Global Positioning Systems (GPS) to monitor cars, could be used as a test case for other countries weighing options for easing crowded roads. Singapore has a similar scheme for charging according to the amount of travel.

http://www.independent.co.uk/news/world/europe/dutch-first-in-europe-to-adopt-green-tax-for-cars-1821268.html

Comment: A bold and positive move that I hope other countries will follow. It is a pity, however, that this tax doesn't favor small and energyefficient cars. They will probably find a solution that a "SUV-km" is more expensive than other "small-car kilometers".

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