Objetivo THE DUTCH ACTIVITIES WITHIN THE FRAMEWORK OF THE PASSYS PROJECT CURRENTLY COVER THE AREAS "TEST METHODOLOGIES", "SIMPLIFIED DESIGN TOOLS", AND "MODEL VALIDATION". A REPORT HAS BEEN PRODUCED ON THE DEVELOPMENT OF AN INTEGRATED, SUBTRACCTIVE TEST METHODOLOGY. IN THIS METHOD, ALL HEAT FLUXES WHICH TAKE PART IN THE THERMAL BALANCE OF THE TEST CELL ARE MEASURED, AS INTEGRATED VALUES OVER LARGE (E.G. DAY, WEEK) TIME INTERVALS, EXCEPT FOR THE FLUXES THROUGH THE PASSIVE SOLAR COMPONENT (PSC) IN THE SOUTH FACING OPENING. THE RESULT IS THE INTEGRATED NET HEAT FLUX THROUGH THE PSC AS A FUNCTION OF SOME WEATHER PARAMETER(S). THE REPORT DESCRIBES THE FIRST STEPS IN THE DEVELOPMENT; THE MAIN EQUATIONS ARE INTRODUCED AND RESULTS OF FIRST SIMULATED TESTS (USING AN UNSTEADY STATE COMPUTER MODEL) ARE USED FOR EXAMINING THE FEASIBILITY OF THE METHOD. THE INTEGRATED, SUBTRACTIVE METHOD IS STUDIED, NOT BECAUSE IT IS THE MOST PROMISING ONE; DRAWBACKS ARE POSSIBLY A LONG TEST DURATION AND THE LOW LEVEL OF INFORMATION IT EXTRACTS FROM A TEST. SO OTHER TECHNIQUES MAY BE NEEDED TO EXTRACT ADDITIONAL INFORMATION. IT'S MAIN ADVANTAGES, HOWEVER, ARE (1) THAT THE METHOD IS STRAIGHT FORWARD AND (2) THAT THE SAME MATHEMATICAL RELATIONS AND ELEMENTS ARE USED AS IN A PROMISING TYPE OF SIMPLIFIED DESIGN TOOL. FOR INSTANCE, THE RECENTLY DEVELOPED TOOL TCM-HEAT (TPD CORRELATION BASED MULTI-ZONE MONTHLY METHOD TO CALCULATE HEATING REQUIREMENTS) WHICH HAS BEEN INTRODUCED AS A POSSIBLE TOOL. THE MAIN ELEMENTS ARE THE STEADY STATE THERMAL AND SOLAR TRANSMITTANCES OF THE FACADE AND THE GAIN UTILIZATION FACTOR AND GAIN LOSS RATIO WHICH DESCRIBE THE THERMAL BALANCE OF THE ROOM. THE FIRST TWO CELLS ARRIVED AT THE TEST SITE IN DELFT AND WERE INSTRUMENTED. THE CELLS WERE CALIBRATED DURING THE 1987/1988 WINTER SEASON. DUE TO THE VERY LARGE INERTIA OF THE CELLS IT APPEARED NECESSARY TO DEVELOP SPECIAL TESTS AND TEST EVALUTION PROCEDURES. FOR INSTANCE A COMPARATIVE TEST WITH ONE TEST CELL HEATED WITH CONSTANT, THE OTHER WITH ZERO POWER, WHICH YIELDS THE HEAT LOSS FACTOR OF THE CELLS IN CASE OF AN ADIABATIC SOUTH WALL COMPONENT. APART FROM THIS, A FLEXIBLE NON-LINEAR REGRESSION ANALYSIS METHOD HAS BEEN DEVELOPED TO QUANTIFY THE UNSTEADY STATE CHARACTERISTICS ("CAPACITY") OF THE CELLS FROM THE TEST RESULTS. FIRST COMPUTATIONS ON THE CALIBRATION RESULTS SHOW THAT THE APPROACH IS VERY PROMISING. AS A SPECIAL ADDITION TO THE TEST CELLS IN DELFT THE TPD HAS DESIGNED A MOVEABLE COLD BOX WHICH CAN TURN A TEST CELL TEMPORARILY INTO A HOT BOX FACILITY. THE ESP SIMULATION MODEL HAS BEEN IMPLEMENTED AT THE TPD IN EINDHOVEN AND DELFT AND IS BEING USED IN THE CONTEXT OF MODEL VALIDATION. SIMULATIONS WITH ESP ARE ALSO CARRIED OUT TO PRODUCE RESULTS FOR THE DEVELOPMENT OF TEST METHODOLOGIES AND A SIMPLIFIED DESIGN TOOL. WITHIN THE SUBGROUP MODEL VALIDATION THE TPD IS SUBJECT EDITOR FOR THE TOPICS INTERNAL CONVECTION AND THERMAL COMFORT; IN ADDITION SENSITIVITY STUDIES WILL FOCUS ON THE TOPICS EXTERNAL LONG WAVE RADIATION AND PASSIVE SOLAR COMPONENTS. SELECTED RESULTS WILL BE PRESENTED AT THE CONFERENCE. Programa(s) FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Business Unit of TNO Built Environment and Geosciences Aportación de la UE Sin datos Dirección Van Mourik Broekmanweg 6 2628 XE DELFT Países Bajos Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos
