Building Energy Efficiency Project Mongolia / UNDP/GEF Energy Efficient and Passive House Building Design Guidelines Part 8 : Energy from Renewable Energy Sources Part 9 : Sizing and Efficiencies of Building Systems Building Energy Efficiency Project Mongolia / UNDP/GEF Ulaanbaatar , Mongolia August 2011 Dr. Adil Lari Austrian Consulting Engineers Group ZT-GmbH Währinger Straße 115/23 1180 Vienna, AUSTRIA Phone: 0043/ (0) 1 408 94 05 Fax: 0043/ (0) 1 402 58 77 [email protected]vision becomes reality www.acegroup.at
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Energy Efficient and Passive House Building Design GuidelinesPart 8 : Energy from Renewable Energy SourcesPart 9 : Sizing and Efficiencies of Building Systems
Building Energy Efficiency ProjectMongolia / UNDP/GEF
Ulaanbaatar, Mongolia , g
August 2011
Dr. Adil LariAustrian Consulting Engineers Group ZT-GmbH
Building Energy Efficiency Project Mongolia / UNDP/GEF
INTRODUCTION
Dr. Adil Lari :• Practicing Architect and Managing Director of the
Austrian Consulting Engineers Group ACE Group• has over 20 years experience building low-energy• has over 20 years experience building low-energy
buildings in Europe and abroad.• consultant for buildings sector Energy Efficiency
and Renewable Energy policy development in Europe, CIS and the Near EastEurope, CIS and the Near East
ACE Group Mission Statement:
ENERGY EFFICIENT AND RENEWABLE ENERGYENERGY EFFICIENT AND RENEWABLE ENERGYMEASURES FOR BUILDINGS CAN BE LOW-COST.THEY PAY FOR THEMSELVES IN A SHORT TERMAND
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AND PROVIDE LONG-TERM COMFORT AND SAVINGS
Building Energy Efficiency Project Mongolia / UNDP/GEF
PRESENTATION OVERVIEW
• The Solar House Concept
• Efficiency in Diverse Climatic Regions
• Simulation resultsSimulation results
Field test resultsvision becomes reality
• Field test results
Building Energy Efficiency Project Mongolia / UNDP/GEF
The Solar House Concept
• Solar Houses can be new-build or renovation. They can be homes, offices or public buildings. Solar Houses proposes a target framework for how to design and renovate such buildings that contribute positively to human health and well-being by focusing on the indoor and outdoor environment and the use of renewable energyon the indoor and outdoor environment and the use of renewable energy.
• ENERGY- Contributes positively to the energy balance of the building• A Solar House is energy efficient and all energy needed is supplied by renewable
energy sources integrated in the building or from the nearby collective energy system and electricity grid.
• INDOOR CLIMATE - Creates a healthier and more comfortable life for the occupants• A Solar House creates healthier and more comfortable indoor conditions for the
occupants and the building ensures generous supply of daylight and fresh airoccupants and the building ensures generous supply of daylight and fresh air. Materials used have a positive impact on comfort and indoor climate.
• ENVIRONMENT - Has a positive impact on the environment• A Solar House interacts positively with the environment by means of an optimised
l ti hi ith th l l t t f d f d it ll
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relationship with the local context, focused use of resources, and on its overall environmental impact throughout its life cycle.
Building Energy Efficiency Project Mongolia / UNDP/GEF
Solar House
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Conventional Solar Thermal Systems
Share of solar energy in conventional systems
wee
k[k
Wh]
per
w
Energy provided by solar system Total energy demand
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Solar Housing Concept
and
[kW
h/m
2]
Seasonal storage
Seasonal distribution of supply and demand
BuildingFloor area 128 m2
Heat insulation WSchVo ´95
Hea
tdem
a
Rad
iatio
n [
•40m2 Collector area•10m3 Storage capacity•72% Solar fraction•30kWh/(m2a) Heating demand
Irradiation Back-up heating system
Energy demandSpace heatingand Hot water
Heat demandSpace heating~12000 kWh/a
Weather datand[k
Wh]
e he
atin
g)
kWh/
m2 ]
atan
gle
of45
°)
Weather dataTest reference year WьrzburgRadiation sumcollector level: 1231 kWh/(m2)
Hea
tdem
an(D
HW
+ S
pace
Rad
iatio
n [
(glo
bal i
rradi
ance
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Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec.
Heat demand Drinking water 3600 kWh/a
Building Energy Efficiency Project Mongolia / UNDP/GEF
Climatic Zones• Solar radiation Northern Europe• Heating degree days
Northern Europe+ High space heating demand– Low solar radiation
Central Europe
Southern Europe
Central Europe+ Space heating demand+ Solar radiation
Southern Europe+ High solar radiation– Low space heating demand
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Climatic Zones
Space heating DHW demand
Building heat demand
Space heating demand (kWh:m².y)
DHW demand (kWh/m².y)
Nice 18.2 10.4
Zurich 54.8 12.3
Roma 20.6 10.4
Vienna 39.5 12.3
Constanza 31.6 10.4
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Climatic ZonesAnnual energy performances for different European
19 to 25 May 11 to 13 MayTrnsys SimulationData acquisition
Building Energy Efficiency Project Mongolia / UNDP/GEF
Tank
Insulation strategy:
Spaceloft (from Aspen Aerogel) with a thickness of 10 mm and a thermal conductivity of 0.019 W/mK.Air gap with a thickness of 5 mm and a thermal conductivity of 0.0242 W/mK.Spaceloft with a thickness of 10 mm and a thermal conductivity of 0.019 W/mK.50 mm thick layer of PIR (Polyisocyanurate) with a thermal conductivity of 0.024 W/mK.
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Building Energy Efficiency Project Mongolia / UNDP/GEF
Field test – Annual energy balance
Fsav, thermal= 28 %Fsav, extended = 16%
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Space heating demand DHW demand
Field testSpace heating demand
(kWh/m².year)DHW demand (kWh/m².year)
Puits de Rians 100 13Standard house 60 13Standard house 60 13Low energy house 30 13Passive house 15 13
Th P it d Ri h i t tiThe Puits de Rians house is representative of a poorly insulated house in Southern Europe
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Building Energy Efficiency Project Mongolia / UNDP/GEF
Field test – ConclusionSi l ti lt li d t th fi ld t t h hSimulation results applied to the field test have shown:
Solar energy saving fraction = 28%Annual Energy saving = 4384 kWh
Quantity of CO2 avoided = 1062 kgAnnual financial saving = 257 €
Boiler efficiency : 0.85Gas tariff : 0.05 €/kWh
Results are below expectations but the building typology of the Puits de Rianshouse (low energy efficient building) is not really adapted to the Solar House
system
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system
Building Energy Efficiency Project Mongolia / UNDP/GEF
Potential Marketsfor the Solar House system
1. The Solar system is an ecologically worthwhile and accountable contribution tomake solar energy gained in summer available in seasons of low solar radiation.
2. Heat coverage of the Solar House system of 40% corresponds to European state-of-the-art – the fundamental idea to save energy by up to 50% is a realisticgoal.
3. In pace with the development of solar thermal systems, supporting an increaseddemand of solar thermal applications and awareness for RE.demand of solar thermal applications and awareness for RE.
4. Use of the Solar House system in passive houses will allow for coverage of thefull-year thermal load of single family houses. Under optimal conditionsapplicable throughout Europe.
5. Fixing of system price should take into consideration investment potential oftarget groups.