SPACE HEATING WITH HEAT PUMPS USING SOIL AND AN ENERGY ROOF AS A HEAT SOURCE

Projektinformationen

ID Finanzhilfevereinbarung: EE-A4-037

Startdatum

Enddatum 1 Mai 1983

Finanziert unter

• Energy research and development programme (EEC), 1979-1983

Gesamtkosten € 0,00

EU-Beitrag Keine Daten

Koordiniert durch

LABORELEC
Belgium

Ziel

A SYSTEMATIC INVESTIGATION OF HEAT SOURCES FOR HEAT PUMPS HAS BEEN CARRIED OUT IN A 500 M2 HALL HEATED BY THREE HEAT PUMPS USING HORIZONTAL SOIL HEAT EXCHANGERS AND UNSHIELDED SOLAR ABSORBERS AS HEAT SOURCES. THE HORIZONTAL SOIL HEAT EXCHANGERS CONSISTED OF A TWO LAYER SYSTEM AT A DEPTH OF 60 CM AND 120 CM. THE TEMPERATURE OF THE TUBES COULD BE KEPT BETWEEN + 25 DEGREES C AND - 2,5 DEGREES C. DIFFERENT TYPES OF UNSHIELDED ABSORBERS, SUCH AS COPPER ABSORBERS AND GALVANIZED STEEL PLATE ABSORBERS CLIPPED ON COPPER TUBES, PLACED AGAINST THE WALLS OF THE BUILDING, WERE ALSO INVESTIGATED. THE ABSORPTION MEASURED, WAS OF THE ORDER OF 20 W/M2 DEGREE K. ALSO ENCLOSURES AND STACKS MADE OF RADIATORS WERE TESTED. THEY GAVE A CONSIDERABLY HIGHER ABSORPTION : ENCLOSURES 35 W/M2 DEGREE K AND STACKS DEPENDING ON THE WIND VELOCITY : 20 - 80 W/M2 DEGREE K. A DISADVANTAGE OF ALL ABSORBER SYSTEMS IS THAT AT LOW TEMPERATURES THE EFFICIENCY OF THE HEAT PUMP BECOMES VERY LOW. SOIL HEAT EXCHANGERS HAVE THE ADVANTAGE TO DELIVER LOW GRADE HEAT AT MORE CONSTANT TEMPERATURES. BY USING SOIL HEAT EXCHANGERS TOGETHER WITH SOLAR ABSORBERS AS A HEAT PUMP HEAT SOURCE FREEZING OF THE SOIL AROUND THE HEAT EXHANGER PIPES COULD BE AVOIDED. THE GLOBAL COP HOWEVER WAS NOT IMPROVED.

Programm/Programme

• PRE-ENNONUC 2C - Energy research and development programme (EEC), 1979-1983

Thema/Themen

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Aufforderung zur Vorschlagseinreichung

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Finanzierungsplan

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Koordinator

LABORELEC

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• Adresse: BOITE POSTALE 11 ; 1640 RHODE-SAINT-GENESE ; Belgien
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