Cold last days of 2009

Progress (or lack there of):
The weather in our region is very cold these days, and it is expected to last for at least 14 days.

As a result, our ventilation aggregate stopped working again the other day (-13C). It seems as though temperatures below -10C causes build up of ice inside the rotating heat-exchanger and the aggregate stops working (the alarm flashing on the display says "Rotor"). The ventilation subcontractor has been notified, but we are still waiting for them to fix this and other remaining issues.

Dispite the fact that the project has not been completed and formally "handed over" to us, they sent us the remaining invoices on December 23rd. I immediately contacted the project leader and told him that we accept to pay for the other work - but the last invoice for the ventilation system (ca 10.000 USD) will not be paid until the solution has been delivered according to the contract.

Note: The updates on this blog have not come as frequently as they used to. First we had Christmas Eve and Christmas Day, and the last couple of days we have been skiing in the norwegian mountains (at Beitostoelen).

Comments:
Until our own JAHUS project has finished - I will continue to write updates when there is progress to report. There will also be more on the economics of this project. Initial calculations indicate that our project will have a paybacktime of approximately 12 years. With more fine-tuning others who want a JAHUS project should be able to get almost the same CO2/energy savings with a paybacktime of 10 years. More on these calculations and suggestions on how to achieve the same benefits and a paybacktime of only 10 years in future blog-posts.

"The job isn't done...."
COP15 in Copenhagen didn't give us what we had hoped for. In the next 12 months we will continue to see development and discussons on the unresolved issues (China letting UN monitor what they do, USA to pass a new climate law, who pays for what etc.). As we enter into a new year, I will also continue to update this blog with information on topics related to global warming and energy-saving.