Zero Energy House manufacturing company https://sinergomajas.lv/en https://dominohomes.eu https://www.facebook.com.lv/sinergo
ZERO ENERGY HOUSE INCREASED ENERGY EFFICIANCY NO RISK OF FREAZING They are regular grid-tied homes that are so air- SINERGO houses are built according to the A passive house will never freeze in winter even if tight, well insulated, and energy efficient that Passive House construction standards. These are you turn off the electricity for several weeks. The they produce as much renewable energy as they houses with very high energy efficiency, in which indoor temperature will not drop below 10° C even consume over the course of a year, leaving the a comfortable indoor climate can be maintained in the coldest winter months. occupants with a net zero energy bill, and a without active heating or cooling systems. carbon-free home. Live in a house built according to 2020 construction standards and almost without any heating costs! EFFECTIVE VENTILATION ECOLOGICAL CONSTRUCTION WELL-BEING AND COMFORT Pleasant and fresh air inside the house is SINERGO houses are designed to use as much Exceptional thermal insulation and provided by an automatic ventilation system natural material as possible in the construction excellent building air-tightness protects a house which keeps the air pleasantly warm, fresh and process. The house is built from high-quality from the risk of accumulation of moisture, mold and clean from dust. wood and is heat-insulated with natural cellulose condensation. and wood fibre boards.
What is Passive house? Usually a house is equipped with a powerful heating system and often with air conditioners to maintain a comfortable temperature all year round. Due to rising energy costs, the operation of such a house becomes increasingly expensive. Did you know that you can do without active home heating even in Dr. Volfgang Feist The first Passive house the coldest winter months? in the world In 1988 the German scientists Bo Adamson and Dr. Wolfgang Feist developed the passive house concept and built the world’s first passive house in 1991 in Darmstadt, Germany.
Šie zinātnieki izstrādāja Pasīvās mājas būvniecības standartu un noteica sekojošus kritērijus: 1. Sufficient thermal insulation 2. Fully hermetic 3. Without thermal bridges This can be compared with a high-quality jacket in A passive house does not have even the slightest gaps A thermal bridge is a heat leak through which heat escapes winter, which keeps you warm without a heater. through which warm air could escape. the building via construction elements. 4. Triple pane insulated glazing 5. Correct location of the building 6. Air ventilation with recovery They serve as large solar collectors that help to heat The house should be located so that the sun heats it Ventilation ensures that the air in the house is the house in winter. through the large windows in winter, while in summer a always fresh and clean all year round, while shadow is formed under a special window overhang to preventing the escape of heat from the building. prevent the house from heating up THE RESULT: a house in which a comfortable indoor climate can be maintained without active heating or cooling systems.
Where does the heat come from then? A passive house requires approximately 90% less heating energy than a standard house. The remaining 10% comes from: body heat of the house inhabitants; solar radiation through windows; heat released by household appliances, lighting, and TV set; a ventilation system that keeps the air evenly warm; a decorative wood-burning fireplace or small electric radiators. What is “passive” in a Passive House? The heating system: a passive house requires no “active” heating since it maintains the heat using solar radiation, as well a s heat emitted by domestic equipment and the house inhabitants – the so- called “passive” energy. Thanks to the excellent heat insulation, triple p ane windows and high-efficiency ventilation unit with heat recovery, a passive house cools down very slowly, like a vacuum flask, and only during the short days of winter requires a little auxiliary heat, such as by using a fireplace or small electric radiator.
Excellent thermal insulation Thick walls which ensure that heat is retained indoors are one of the primary construction elements of any passive or high energy-efficiency building. To optimize the use of resources and to reduce the volume of the walls, we use a wood-framed panel system that provides maximum strength and structural efficiency with minimal material consumption. Cellulose heat insulation has been filled between the I-beam struts of the frame, and on the outside the wall has been additionally insulated using ecological wood fibre boards, thus obtaining an unparalleled thermal insulation layer with a 57-cm thickness and the heat transfer coefficient U=0.07 W/(m2K). In addition to plaster, OSB (wood fibre) boards are used in the walls. Wall panels are designed to avoid the so-called thermal bridges, while the assembly technology allows for obtaining a high-quality structure with very tight joints. Fully hermetic The passive house envelope needs to be especially well sealed because otherwise the outdoor air will be heated. The warm indoor air always tries to escape from the house through gaps, which can cause condensation and mould build-up in unsealed areas. Air flow can also cause draughts and cold air zones near the floor. Heat insulation materials are not usually airtight, so this envelope needs to be designed and built separately. In wooden structures, composite wooden boards are normally used, with joints sealed using tape. It is essential that the airtight envelope be seamless and not accidentally damaged by other construction workers (e.g. electricians). All utility outlets (even the power sockets) that cross the envelope must be sealed using special materials. The passive house heat insulation and an airtight layer must be checked using the special blower door method and an infrared camera.
Without thermal bridges Heat can escape the house not only through cracks in the building, but also through materials with high thermal conductivity. A thermal bridge can be formed, for example, by improperly constructing a balcony on the second floor, the roof, or external and internal corners of the building wall. A passive house may not contain thermal bridges because they reduce the indoor surface temperature, cause a risk of moisture damage occurring and significantly increase the heat loss. Engineers have different methods to prevent thermal bridging. The main rules are: do not breach the thermal insulation envelope, choose a rational shape for the building and build the windows into the heat insulation layer. Window installation Correctly placed airtight triple-glazed windows One of the basic principles of passive construction is correct orientation of the house and its glazed areas to make use of the most of solar energy. Passive solar energy through the glazing can offset 40% of the heat loss of the building, so the windows (and also glazed front doors) are some of the core elements of the passive house. The best commercially available windows should be chosen for a passive house, usually with very high- quality triple glazing. The panes need to be additionally sealed and set in specially designed frames without thermal bridges. Such windows will let more heat in than out of the room; therefore, in summer the house should be protected against overheating using solar protectors, shutters, roof overhangs or other solutions. The windows of a passive house must not be equipped with the additional ventilation systems sometimes offered by window manufacturers. Airtight windows should not be a cause for concern because air quality is ensured by the innovative mechanical ventilation system.
Efficient air ventilation A ventilation system is recommended in every home, but in a passive house it is essential. The air ventilation device allows the house to be provided with fresh air without opening the windows. The passive house is airtight and air exchange in it takes place almost exclusively through the ventilation system. By using the air heat exchanger built into the ventilation system, it is possible to recover up to 93% of the heat from the air that is released from the building. A small electric heater is installed in the ventilation system that heats up the air slightly when required to ensure a steady air temperature of +20° C. In summer the system operates in reverse and cools the incoming fresh air to ensure a comfortable microclimate indoors throughout the year. The air in the room needs not only to be warm, but also clean. For good air quality, one person requires at least 30 cubic metres of fresh air per hour. If there are 5 people living in the house, the ventilation equipment will supply 150 cubic metres of fresh air per hour. Small auxiliary heating system A passive house requires no “active” heating, since it maintains the heat using solar radiation, as well as heat emitted by domestic equipment and the house inhabitants – the so- called “passive” energy. In addition, the ventilation system warms the incoming fresh air to a temperature of +20° C. Despite this, the Latvian winter weather requires a small heating system. To avoid having to light the fireplace, we offer to install low-powered (375 W) decorative electric heaters in each of the rooms. As alternative source of heating we recommend air-to-air heatpump which is 4x more economical compared to electrical heating. Hybrid heater Mitsubishi HERO heatpump
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