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  1. ArchDaily
  2. Projects
  3. Houses
  4. Spain
  5. OHLAB
  6. 2015
  7. MM House / OHLAB

MM House / OHLAB

  • 02:00 - 19 October, 2016
MM House / OHLAB
MM House  / OHLAB, © José Hevia
© José Hevia

© José Hevia © José Hevia © José Hevia © José Hevia + 19

  • Architects

  • Location

    Palma, Spain
  • Architect in Charge

    OHLAB
  • Team

    Paloma Hernaiz, Jaime Oliver, Rebeca Lavín, Walter Brandt, Sergio Rivero de Cáceres
  • Area

    196.0 m2
  • Project Year

    2015
  • Quantity Surveyor

    Jorge Ramón
  • Structure

    Jesús Alonso
  • Energy Efficiency Advisor

    Anne Vogt
  • Project Management

    Paloma Hernaiz, Jaime Oliver (architects), Jorge Ramón (quantity surveyor)
  • Site Area

    1620m2
  • Usable Area

    130m2
  • More Specs Less Specs
© José Hevia
© José Hevia

Text description provided by the architects. This house looks for the maximum energy efficiency adapting itself to the program, the solar orientation, the views and the slope of the terrain.

© José Hevia
© José Hevia

The project optimizes the program grouping it in four boxes –kitchen, living-dinning, main bedroom and guest bedrooms- which can be used together or independently. Each box is placed carefully on the ground and rotates on its axis with precision to find the best views and orientation for their use. The bedrooms face the East, the garden and the Bellver Castle; the living and dinning room face South-east, the sea and the garden; the kitchen faces South and the vegetable garden; and in the attic over the living room, the terrace looks towards the view of the sea and its big window over the living room faces South allowing the winter sun to warm the main space of the house while the eaves of the roof protects from the summer sun.

Plans
Plans

Each box has large openings towards the best orientations and sights, and smaller openings on the opposite façade allowing cross ventilation and taking advantage of the East-West breezes of the place. The South openings are recessed to let the sun enter in winter and block it in summer, while the East and West openings have exterior shutters.

© José Hevia
© José Hevia

The house has been designed according to PASSIVHAUS standards to achieve the maximum energy efficiency.

A rigorous infographic and thermal study has been made to ensure an optimal heat input, maximizing it in winter and minimizing it in summer.

© José Hevia
© José Hevia

The façade has an exterior insulation system that increases the insulation thickness up to 15cm and strictly guarding all joints to completely avoid any thermal bridge. The infiltrations through the façade have been reduced to the minimum, and the hermeticism of the enclosure has been maximized to overcome pressurization tests in every space. The heat exchanger ensures air renovation wasting no energy and it is optimized to use the heat generated with showers’ steam and cooking to transform it into heating.

© José Hevia
© José Hevia

Thanks to this design cooling is not necessary, which is typically an issue in the hot days of Mallorca’s summer, and the heating demand is only 11kWh/m2a (a typical house of this characteristics in Mallorca would have a heating demand of 85 to 100 kWh/m2a) which is solved with a small perimeter underfloor heating circuit. The energy to heat the hot water is obtained almost entirely from the solar thermal installation.

Scheme
Scheme

The pitched roofs have a system for collecting rainwater, three of them get water for irrigation and general use while the fourth roof is “the clean one” and collects water for consumption. For this purpose two separate tanks, one of 40 m3 and another 8 m3, are arranged taking advantage of the gaps created between the housing and the slope of the terrain. With this measures the house is completely autonomous in terms of water. The garden includes a vegetable patch, low maintenance native vegetation and deciduous trees along the south of the house to protect from the summer sun.

© José Hevia
© José Hevia

The project has been made with a low construction budget and a very low cost of energy maintenance. It is a home that promotes environmental and sustainability values, reporting savings and comfort without incurring additional economic effort.

© José Hevia
© José Hevia

The house was finished last September and monitoring its performance has been key to value the results beyond the happiness and satisfaction of the clients. As of April the clients have not turn on the heat at all reporting an interior temperature (measured daily –day and night) for the winter between 21ºC to 24ºC, with exterior temperatures between 5º to 15º.

First winter living in the house and it had ZERO heating consumption (100% passive) and ZERO water expense (100% rainwater).

© José Hevia
© José Hevia
Cite: "MM House / OHLAB" 19 Oct 2016. ArchDaily. Accessed . <https://www.archdaily.com/797598/mm-house-ohlab/> ISSN 0719-8884