Modular Polyurethane Elements for Passive Houses

BUILDING ENVELOPE

Without the implementation of this fundamental element , the fulfillment of the other energy performance conditions of the building (thermal insulation of windows and doors, tightness, orientation of the building, ventilation and recovery of exhausted heat, use of renewable energies, use of heat/cold generation equipment with very efficient high ceilings, the use of household appliances with very low consumption, etc.) becomes almost useless as they cannot compensate for the energy losses caused by a building envelope with a non-performing thermal insulation level.

The very high level of thermal insulation of the building`s opaque envelope must also be doubled by a high-performance resistance structure. To these basic aspects are added qualities related to good sound insulation, high reliability, easy construction procedures, high profitability, the impact on the environment, etc.

disadvantage

In the current context of the market of materials and construction works, the classic constructions made of concrete, brick and metal stand out first of all, which meet the resistance conditions, but in terms of thermal insulation, they are inadequate , as they use ineffective opaque coverings (polystyrene, mineral wool, etc.) .). Secondly, from the desire to reach the parameters of "Passive Houses", insulating elements were produced using polystyrene (the aspects related to the disadvantages of using polystyrene will be detailed below) which, although they tend to meet the thermal insulation standards, do not confer a high-performance resistance structure, especially for the construction of multi-storey buildings.Of course, a third large category is made up of wooden buildings, whose performances are modest in terms of the level of thermal insulation, resistance, reliability, profitability, environment, etc. are well-known.

MODULAR POLYURETHANE ELEMENTS

In this context, the idea of the Romanian inventor Breaz Laurentiu was developed to create opaque envelopes (walls, floors, roofs) performing in terms of thermal insulation and mainly resistance, to be built from modular elements (replacing bricks, pillars, beams and classic concrete slabs, wood or other "traditional" materials) easy to assemble, which compete for the creation of durable, attractive, comfortable and energy-efficient buildings, according to the performance requirements of the "Passive House", "Zero Energy House" concepts ", "Active house".

Following the research activity, which began 25 years ago, Mr. Breaz Laurentiu came to the conclusion that the best existing material for the construction of such modular elements is polyurethane (polyurethane foam), which stands out for its physico-chemical qualities clearly superior to any other materials. This idea was corroborated with the idea of incorporating the building`s resistance structure into the modular element, so that the first modular elements made of PUR-BSF-ICF polyurethane were created in 2005.

These were later improved and diversified for different applications, finally reaching the current form of modular polyurethane elements, respectively PUR-ICF.

Along with the creation of these products, innovative manufacturing and execution technologies were developed and implemented. All this activity was recognized by the issuance of several invention patents, such as: no. 123373-Romanian patent with the title "Modular element, network, resistance structure and construction obtained with these modular elements", no. 123557 - the Romanian patent with the title "Modular element, network, resistance structure and construction obtained with these modular elements", no. US2015/0259125 - American patent, no. 567135 - New Zealand patent, no. 189909-Israeli patent, no. 2006335382-Australian patent, no. 92034- Ukrainian patent, no. 012548- Eurasian patent validated in Russia, no. 2621224-Canadian patent etc.