MESSIB-ISSB Experimental home January, 2011
Project summary •
The project purpose is examine in real conditions and scale, technologies that can reduce significantly the energy consumption of buildings.
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The MESSIB-ISSB experimental home in Amphilochia is a completely new construction purpose built for this project. Additionally, an office building is being modified in Freiburg, Germany.
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The – – – – – – –
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Additional equipment and concepts can be integrated and tested in the future.
main technologies used in the heating/cooling systems are, Floor heating / cooling Ceiling heating / cooling Fan coil for indoor moisture control and assistance to heating / cooling Solar system for space and water heating Air/water high efficiency heat pump Automation system for the optimization all energy related systems Energy and environmental data monitoring, metering, and data logging
Project partners •
Acciona (Spain) / Project coordination
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Knauf (Germany, Greece) / Building materials and technology
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National Technical University of Athens (NTUA) / Project coordination
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University of Stuttgart (Germany)
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Fraunhoffer Institute for Solar Energy (Germany)
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Uponor (Germany, Greece) / Piping systems for sanitary, undefloor, ceiling, and distribution.
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Theros (Greece) / Electrical & mechanical system design & construction.
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Robotina (Slovenia) / Data logging and control systems
Project plans
Construction progress photos
The role of Theros Project
Financing
Design
Construction
Knauf
Knauf – Theros
Theros
Plumbing & electrical Floor & Ceiling heating Fan coil
Uponor
Uponor
Theros
Knauf / NTUA
Theros
Theros
Machine room
Theros / Meibes
Theros
Theros
NTUA
Theros
Theros
Solar heating
Theros
Theros
Theros
Heat pump
Knauf
Theros
Theros
Automations & data logging system
T.B.C.
T.B.C. / Theros / NTUA
T.B.C.
Heat/Water meters
T.B.C. = To Be Confirmed
Thermal energy flow diagram
Solar system Floor
Ceiling
Fan Coil
Combi tank DHW section
Heating/Cooling Manifold
Heat pump
Fuel cell (future)
Other (future)
Combi tank lower section
System & machine room requirements •
Low energy consumption.
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Control the temperature and humidity in the house to the desired levels.
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Coordinate the production of energy in accordance with the simultaneous and expected needs in order to achieve maximum economy.
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Individually control and measure all energy producers and consumers.
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Test different system setups and operational modes.
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Ability to plug-in other equipment in the future such as fuel cells, etc.
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Use technologies that are advanced but not out of reach.
Machine room equipment layout
Machine room piping diagram
Machine room electrical diagram
Underfloor heating system •
The Uponor Siccus system has been installed with PE-Xa 14 mm pipes and Knauf Vidifloor panels.
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The insulation is by a 25 mm element, made of polystyrene foam EPS. For the groundfloor an additional 10mm polystyrene insulation board has been placed underneath the basic element.
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The 0.5 mm thick heat emission plate of the lightweight panel (made of aluminium sheet, λ = 200 W/mK) provides optimum transmission of heat to the dry-screed elements.
Ceiling system •
The ceiling also contains piping so that it can contribute in the heating but importantly in the cooling of the house.
Solar heating system overview •
Use of two (2) high efficiency vacuum tube collectors VRK 3000 DF by Akotec, Germany with total area of 9,8 m2, and nominal power output of 6 kW.
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The collector active surface is rotated to about 60° for maximum benefit during the winter months and reduced overheating during the summer.
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A plastic Combi tank with 800 lt capacity and very low thermal losses is used. In case there is not sufficient solar energy it will be possible to add heat with an electric element, the heat pump, or any other future equipment. Heat can be extracted at a controlled temperature using a dedicated pump station.
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The heat pump can heat the complete or only the top area of the combi tank.
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The solar system is controlled by a Prozeda twin differential controller, model Genius Plus which is also able to data log the variables it controls.
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The solar energy contribution is metered.
360°
Solar panels Akotec VRK 3000 DF •
Made by
in Germany.
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Very high efficiency, high temperature type, with selective coating on both sides to take advantage of the reflections.
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Each solar tube is 360° rotatable which means it can have the most optimum orientation to the sun in all possible installation locations.
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Light weight construction.
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Easy installation.
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10 year warranty.
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Can be used in solar cooling.
Solar panel installation drawing
4,35
N
S
TS 01
2,2
TS 01
Each fin turned at an angle of 60° approx.
5
0,70
2,10 Manual vent
2,25
SS piping DN16 14mm insulation TS 06
N
SS piping DN16 14mm insulation
Tiled roof TS 06
S
2 x AkoTec VRK 3000 DF Max flow: 280 lt/hour Resistance: 1,0-1,2 m Solarstation S with 15-65 SS-Flex DN16 resistance: 3.5 mbar/m
Client: MESSIB project Project: MESSIB house in Amphilochia Location: Knauf factory, Amphilochia Prepared by: Panos Xanthakos Our ref.: AIT-00027 Scale: 1:50 / Α4 Solar collectors as installed drawing
Date: 23.11.2010
Solar panel installation photos
Solar & heating controller Prozeda Genius Plus •
Made by
, Germany.
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Intelligent proportional solar pump control – reduces the pump speed and as a result the flow to the collectors, according to the available solar energy.
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Heating system control – it modifies the temperature of the water to underfloor and ceiling in accordance with the outdoor conditions.
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Can record the data for many days in a removable memory stick for further computer evaluation.
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Monitors and protects the system.
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Suitable for use with Vacuum Tube collectors.
Solar & heating controller sensor diagram
Machine room and solar pump stations •
Made by and sponsored by
, Germany.
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Modular technology which allows easy and quick assembly.
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All necessary components in a compact insulated package.
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All heating/cooling consumers and producers are connected to a common insulated manifold making it easy to operate them in any possible combination.
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The solar pump stations and piping components are built for the high temperatures that can be reached in high efficiency solar systems.
Solar pump station •
All components are designed to withstand high temperatures and be resistant to corrosion caused by the solar antifreeze additives.
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A digital flow meter sends to the solar controller the flow rate so it can calculate the absorbed solar energy.
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An additional M-Bus flow meter has been included for monitoring by the central system.
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All piping used is Stainless Steel corrugated type, make Meibes Inoflex Solar with UV resistant insulation.
Heating & cooling pump stations Photo of the pump stations prior to the electrical connections, 1. Connection sets for the M-Bus heat meters for monitoring the flow and energy details of each circuit. 2. Fan coil pump station. 3. Under floor heating pump station with 3way valve. 4. Ceiling system pump station with 3way valve. 5. Combi boiler upper part pump station. 6. Future connection. 7. Future connection. 8. Connection for heat pump circuit. 9. System guard line filter of air and solids, and connection to Combi boiler for solar heating.
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2
6
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Heating & cooling pump stations The heating system wired and the heat meters installed during commissioning.
Heating & cooling pump stations
Energy meters •
Made by
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Heating and cooling energy metering.
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Remote signal connection M-Bus or 1 pulse/kWh for connection to central data logging system.
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, Germany.
Local indication of temperature, flow, and power.
www.theros.gr
Παραγωγή
Μέτρηση
Κατανάλωση
kWh
Λέβηηας Ανηλία θερμόηηηας Τηλεθέρμανζη
Καλοριθέρ Fan coil Ενδοδαπέδια Παραγωγή ΖΝΧ
Heat pump •
A high efficiency air/water heat pump shall be installed.
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It is a technology that is becoming very popular in Greece and other European countries as it has many advantages compared to the traditional solution of oil or natural gas boiler, Similar installation cost Heating costs that can be up to 70-80% lower No need for machine room, fuel tank, etc. Ability to cool in the summer Easy installation and nearly maintenance free Can assist the domestic hot water production
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Different brands and products are being considered and evaluated.
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The main decision factors are the seasonal efficiency (COP & EER), the weather compensation controls, and the ability to be connected and controlled by a central automation system.
Control & automation system 1 of 2 •
The temperature in each room is controlled by wireless thermostats which transmit the signals to the DEM circuit control system of Uponor.
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Auto balancing function of the hydraulic circuits, no manual balancing required.
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Intelligent control which results in up to 25 % faster response time for faster temperature adjustments, and up to 12 % energy-saving potential due to higher efficiency.
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December 2010 update – The control of the heating system water temperature and other machine room operations are controlled by the Prozeda Genius Plus controller since there is no other central control system installed yet.
Automation system 2 of 2 In the near future the system is be upgraded to heating and cooling and humidity control. Theros & NTUA are to decide on the system logic and other requirements that need to be taken into account, •
Take measurements from the different instruments (temperature, humidity, flow, energy meters, etc.), record them, and display them on a web based system.
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Control the different heating / cooling consumers such as, – Floor – Ceiling – Fan coil – Combi tank
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Control the different heating / cooling producers such as, – Heat pump – Electric resistance element in Combi tank – Combi tank stored energy – Fuel cell (future)