LUWOGE BASF Real Estate Company www.luwoge.de

Innovation modernization of old buildings saves money and energy The 3-liter house in Ludwigshafen's Brunck Quarter

"As for the future, your task is not to foresee it, but to enable it" – Antoine de Saint-Exupéry With the 3-liter house, we have laid the cornerstone for a sustainable future. This modernized old building combines sound business sense with responsible Dr. Matthias Hensel Managing Director LUWOGE – BASF Real Estate Company use of our natural resources. It raises the quality of life while enhancing competitive advantage. Success is evident: The 3-liter house has become a shining example throughout Europe. Its tenants are pleased with their modernized home in all respects. And the 3-liter target...

LUWOGE – the housing company of BASF – launched its pilot project for a 3-liter house in the Brunck Quarter, which is located in the Friesenheim Following a three-year period of study, heating fuel requirements are even more favorable than LUWOGE had anticipated. At only 2.6 liters of oil per square meter per year, average consumption in the 3-liter house exceeds the 3-liter target. The Brunck Quarter before modernization

> INTRODUCTION The modernized Brunck Quarter This is how it all got started. Back in the 1990s it became clear that the floor plans of apartments in Ludwigshafen's Brunck Quarter, the BASF housing settlement, no longer met modern needs. LUWOGE, the city of Ludwigshafen, and the state of Rhineland-Palatinate drew up a comprehensive modernization program. This program has reduced the amount of heating fuel needed by 80 %. It consisted of a number of projects, including modernizing an older building to meet the 3-liter target of energy consumption. This building has attracted attention and acclaim...

Benefiting the environment – Reducing CO2 emissions Estimates agree that around 24 million residential units in Germany alone are in need of modernization. Around 600,000 of these units (about 3 %) are modernized every year, yet only around 200,000 of them (1 %) also benefit from energy efficiency measures. In most cases, "modernization" consists of a new coat of paint on the facade or a new roof. Although the site must be prepared for painting and roofing anyway, contractors often fail to install thermal insulation on the building shell at the same time. Yet the investment would pay off for...

If all 600,000 units a year were also modernized to meet the EnEV energy standard for new buildings – heating oil consumption of around 7 liters per square meter per year – i.e. if the energy modernization rate were raised from 1 to 3 % – this would reduce CO2 emissions by around 14 million tons a year (based on heating oil requirements of 25 liters per square meter per year for non-modernized buildings). Boosting the job market 7 < The total investment to comprehensively modernize 600,000 residential units would be around 30 billion D per year. Ten to fifteen jobs are created for every million...

-LITER HOUSE Controlled ventilation with thermal recovery ensures a constant supply of Special thermal insulation is the primary means of lowering the fuel requirements and therefore reducing C02 emissions for the This old building has been insulated with Neopor® panels that are at least 20 centimeters thick. Neopor features considerably better thermal insulation properties than conventional materi- als. In addition to promoting insulation, the Passive House Institute also strongly recom- mends avoiding shunts that make it easy for heat to escape through the building's structural ele- ments....

The fresh air supply for all the rooms in the building comes from a controlled ventilation system that ensures optimum air intake and outlet. This system sucks used air out of the kitchen and bathroom and passes it through a heat exchanger. The exchanger transfers up to 85 % of the heat from the used air to fresh air, which then flows at a pleasant temperature into the living room and bedrooms. The advantages are numerous: 85 % of the heat remains in the building, interior air is kept fresh and filtered, and contaminants are constantly filtered out. The windows in the 3-liter house are triple-glazed...

Neopor – Insulating material of the future The BASF foam portfolio contains not one but two products that have proven very successful in increasing the efficiency of thermal insulation: Styropor® and Neopor®. A special process foams the Neopor pellets up to fifty times their original size Styropor, which BASF developed back in the 1950s, has been used as an insulating material for more than 45 years now. But even a classic mate- rial is capable of further development, and intensive research efforts have yielded Neopor. The two insulating materials differ not only in their color. Neopor, the silver-grey...

The environmental efficiency analysis BASF performs environmental efficiency analyses in order to study and compare the environmental and economic advantages of different materials. These analyses consider all costs and environmental effects throughout a product's entire life cycle – which here includes manufacturing both the insulation and auxiliary materials, installing the composite thermal insulation system on the wall, and recycling used materials. BASF has performed analyses on a number of different insulation materials. They have shown that Styropor, the leader on the market, is a better...

Active air conditioning: Latent I leat accumula- tors compensate for thermal highs and lows Comfort in the home depends to a large degree on the air temperature in the rooms. Nobody likes it too cold or too hot. But what is the best way to achieve a pleasant mean tem- perature? Phase Change Materials (PCM), or latent heat accumulators, can play a signi- ficant role here. How Phase Change Materials work temperature uses Phase charging material Mian aged temperature becomes liquid remans constant Heal rerease temperature falls Phase charuniy material Manager temperature bMomt-s soh a remains cormlanl...