Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: energyplay who wrote (59317)	12/24/2009 6:26:14 AM
From: dybdahl	1 Recommendation Respond to of 218634

In houses like mine, we basically live in a plastic bag - this requires that you let the air flow through the building a couple of times during the day. There are some openings in wet-rooms, but they're not enough. In the new buildings, built during the last couple of years, the energy-efficiency requirements basically make it nearly impossible to create a building without mechanical ventilation with heat exchangers. The standards were set in the beginning of the decade, after some research that demonstrated, how passive heat exchangers and highly efficient fans can create a good indoor climate while creating significant energy savings at the same time. The principle is simple: You have a multi-stage heat coupling between inlet air and outlet air, so that the outgoing air warms up the ingoing air, and by having multiple stages, this is very efficient. You can see a device here: exhausto.dk However, the current requirements with lots of insulation, are still not at the economic break-even. Assuming that you can borrow all the money you want, the break-even for insulation is to add much more. However, the current energy focus is not on the new building, but on the old buildings, that haven't been improved, yet. Many old buildings will get an insulation layer on the outside in the coming years, and I also expect more heat pump systems to enter the Danish market. A full heat pump system for a normal 1-family house costs about $25,000, but insulation also costs money. Houses in Denmark cost $3,000 to $6,000 per square meter ($300-$600 per sq.foot), depending on condition, location etc. There are no requirements at all how people manage their heating at home - the requirements only apply when constructing houses or when old houses are significantly changed.