Sumit Singhal loves modern architecture. He comes from a family of builders who have built more than 20 projects in the last ten years near Delhi in India. He has recently started writing about the architectural projects that catch his imagination.
Passive House Che in SUCEAVA, ROMANIA by Tecto Arhitectura
January 21st, 2015 by Sumit Singhal
Article source: Tecto Arhitectura
The challenge was to create a simple, sustainable, two-storey unit that would fit into a special site: a mature forest inside a northern romanian city. Form and Building orientation are designed in order to maximise the use of natural daylight and south orientation. To achieve this, the chosen specific site for implementing the volume was on the upper part of the property, gently blending on the slope of the terrain, with great views over the entire forest and the horizon landscape.
House CHE subtly rises around the inner courtyard in a mesmerizing natural environment with whom the building communicates through wide openings and various inner-out passages.
The main element of the design is the fully glazed core. it is the central division which accommodates stair, hallways, and recreational zone, spaces where one can feel outside although inside. Therefore, every space in the house, either experienced in motion or static is an interior space fully dependent on nature and influenced by it.
The ground floor features a total open space, without doors except toilet and technical room, that expands also on the upper floor.
The house was designed and built to reach the passive house standard in the harsh climate conditions of northern Romania (Suceava County) and is in the passive evaluation process. The estimated energy demanded for heating and hot water is lower than 14 kwh/sqm/year (according to preliminary phpp calculations).
The main principles and goals of sustainability and energy efficiency are pursued by the use of wooden structures, all natural insulation materials, green roof, high performance windows and the encompassment of a resource management system for heating and electricity supply. The external envelope uses loose cellulose and pressed wood fiberboard Insulation- all natural materials, with very good insulation properties, with non-toxic components, not attacked by rodents, resistant to moulds and self-regulation humidity. In addition we used intelligent vapour proof membranes – with humidity variable diffusion resistance (high diffusion resistance in Winter, giving high protection against condensation, and diffusion open in Summer, allowing maximum drying of structure).
The natural daylight factor is four times bigger than the usual amount while the generous glazed surfaces also increase the solar passive energy gain. the iconic shape of the roof maximizes the solar input used for heating, offering in the meanwhile a contemporary dynamic expression.
To match the surroundings, exterior finishing is made out of natural cedar slats that preserve their physical-chemical properties even in the northern climate. The green roof recovers the vegetal surface displaced for the house construction.
The minimal need for heating is covered by a small gas boiler in condensation connected to a Buffer Tank. Photovoltaic panels will be installed on the roof at a later stage in order to provide the electric energy necessary for vital consumption. The house has a mechanical ventilation with heat recovery (MVHR) which provides supply and exhaust air by counter-flow heat exchangers and 85% recovery rate. Most of the perceptible heat in the exhaust air is transferred to the in-coming fresh air. It also posses a Earth-to-Air Heat Exchanger (EAHX) that uses free constant temperature of the ground all year long. It provides fresh air, passive cooling in the summer and preheating in the winter. The heating distribution system uses low-temperature heating circuit with Radiant underfloor heating and Radiant wall heating. The living room area has also a biomass chimney that uses wood chips, also connected to the Buffer Tank (1000l). The Innovation of the Buffer Tank is that it stores the heat, on different levels, not the hot water (as traditional boilers do). By storing heat and not hot water, the risk of developing germs and micro-organisms and thus various diseases is eliminated.
A passive rainwater harvesting was designed. A system that collects the rain water from the green roof level is connected with an underground storage tank from where it is used to irrigate the vegetation and the crops.
Contact Tecto Arhitectura