CLIMATOLOGY OF SOLAR IRRADIANCE ON INCLINED SURFACES - I. FINAL REPORT

Commission of the European Communities energy CLIMATOLOGY OF SOLAR IRRADIANCE ON INCLINED SURFACES - I Blow-up from microfiche original Commission of the European Communities energy CLIMATOLOGY OF SOLAR IRRADIANCE ON INCLINED SURFACES - I W.H. Slob, D.E. Brethouwer, C. den Ouden Technisch Physische Dienst TNO-TH - Delft Contract No 294-77 ES NL FINAL REPORT Directorate-General for Research, Science and Education 1981 EUR 7316 EN Published by the COMMISSION OF THE EUROPEAN COMMUNITIES Directorate-General Information Market and Innovation Bâtiment Jean Monnet LUXEMBOURG LEGAL NOTICE Neither the Commission of the European Communities nor any person acting on behalf of the Commission is responsible for the use which might be made of the following information ECSC-EEC-EAEC, Brussels-Luxembourg TPD nummer 803.229 blad -0-CONTENTS Page no. SUMMARY 1 1. INTRODUCTION 3 · 2. DESCRIPTION OF THE MEASURING FACILITY 4 4 2.1. Location 4 2.2. Instruments 4 2.2.1. Pyranometers 4 2.2.2. Pyrheliometers 5 2.2.3. Filters 5 2.2.4. Other measurements 5 2.3. Calibration and control 3. DATA REGISTRATION SYSTEM 15 4. PROCESSING OF DATA 15 45 5. RESULTS 45 5.1. Reference pyranometers 45 5.2. Filters 45 5.3. Albedo 6. COMPARISON OF SUNSHINE DURATION MEASURED WITH A CAMPBELL-STOKES AND THE DIRECT SOLAR RADIATION MEASURED WITH A 48 PYRHELIOMETER 48 6.1. Introduction 48 6.2. Measurements 48 6.3. Threshold 6.4. Determination of the threshold 49 6.5.