Sustainable by design 2050

An initiative of the UIA

Velux model home 2020

Activehouse

Sapienza_Universit___di_Roma

Architekturclips

CO2-SAVER House

CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
CO2-SAVER House
Architect
Piotr Kuczia
Engineers/Specialists
Zbigniew Zwierzchowski (structural design)
Location
Middle East and Eastern Europe - Poland - Pszczyna, Lake Laka
Climate Zone
temperate
Design status
build
Date of completion
2008
Type
Housing
Site area (m²)
1998
GFA (m²)
175
NFA (m²)
144
NFA/GFA
0.823
Density
0.088
Gross Volume (GV) (m³)
650
Building Costs
115000 EUR
Building Costs / m² GFA
657.143
Building Costs / m² NFA
798.611
Building Costs / m³ GV
176.923
Primary Energy (kWh/m²a)
50
Heating Energy (kWh/m²a)
27
Cooling / Heating-System

passive cooling, condensing boiler

Use of renewable ressources - low tech
evapoartive cooling, solar chimneys, use of high thermal mass
Use of renewable ressources - high tech
solar heating, photovoltaics, heating pump, energy recuperation
Renewable, recycled, recyclable and innovative materials

> Building structure
- compact layout
- optimised percentage outer surface / cubature and optimised orientation towards the sun
> Building materials
- natural and close to home  (short transport routes)
- partly recycled and recyclable
> Traditional timber cladding (larch)
- no chemical treatment
- very low embodied energy
- easy to repair / replace, severable und recyclable
> Passive solar systems
- green house and "black box" for passive solar energy harness
- high thermal mass materials inside
- thermal zoning
- stack effect
> Active solar systems:
- solar heater
- photovoltaics
> Very high thermal insulation
- no heat bridges and windproof
- additional thermal insulation of window frames
> "Green roof" with extensive vegetation
> Loam walls for natural climate regulation inside
> Reduced floor construction (polished concrete) with high thermal mass
> Ventilation with energy recovery
> Intelligent building control system

Key Sustainability aspects
solar building integration, accessability for disabled, renewable building materials, recycling and reuse, ecological building materials, integrated planning process, participation of users in planning process, low cost design, use of innovative design tools
Social and ethical responsibility

Excellent indoor air quality, disabled friendly, environment protection

Ressource efficiency and environmental impact

The form of the house is designed to optimise the absorbance of solar energy. Approximately 4/5 of the building envelope is facing to the sun. The single storey living space on the ground floor is externally clad with untreated larch boarding. Solar energy is gained there by the amply glazed patio and stored in the loam walls. Solar thermal collectors are located on the roof and a photovoltaic system is planed for the future. The dark facade of the "black box" - a three storey structure clad with charcoal coloured fibre cement panels - is warmed by the sun, reducing heat loss to the environment. The passive and active solar energy concepts and a high standard of thermal insulation are enhanced by a ventilation plant with thermal recovery system.

Economic lifecycle perfomance

 The design of the project was determinated by the twin goals of low lifecycle costs and a reduction in construction costs. All details are simple, but well thought out. The house did not cost more than a conventional one in Poland. Cost-saving were made by the application of traditional building techniques and the use of local materials and recycled building elements. 

Contextual performance and impact

This simple sustainable house - like a chameleon - blends with its surrounding area on Laka Lake in Upper Silesia. Colourful planks within the timber façade reflect the tones of the landscape. The window reveals, clad in fibre cement, frame images of the countryside. Analogical to the most creatures, the building is outside symmetrical, although the internal zones - according to function - are arranged asymmetrically.