# Miloslav V. Jokl, Zdeněk Jirák, Stanislav Malý, Daniel Šebesta, L. Vajner, Š. Bernatíková, L. Kilián, H. Lehocká, H. Tomášková 1.

## Presentation on theme: "Miloslav V. Jokl, Zdeněk Jirák, Stanislav Malý, Daniel Šebesta, L. Vajner, Š. Bernatíková, L. Kilián, H. Lehocká, H. Tomášková 1."— Presentation transcript:

Miloslav V. Jokl, Zdeněk Jirák, Stanislav Malý, Daniel Šebesta, L. Vajner, Š. Bernatíková, L. Kilián, H. Lehocká, H. Tomášková 1

RTA by EN ISO 7730:2005 2 2 INTRODUCTION

3 3

4 4 Globe stereothermometer scheme.

5 5 Measurements in climatic chamber. Legend: 1. vertical warm radiant panel, 2. vertical cool radiant panel, 3. radiant temperature, 4. stereothermometer, 5. air velocity, 6. globe thermometer Vernon-Jokl, 7. direction of air flow, 8. ceiling radiant panel, 9. control room window, 10. entrance. -globe temperature was kept constant 24 °C -the temperatures of the vertical surfaces was chosen 14, 19, 24, 29, 34 a 44 °C -the temperatures of the horizontal surfaces 45, 53 a 58 °C -air velocity was chosen 0.25 m/s, 0.5 m/s and 1.0 m/s -RTA, t rA, t rB, air velocity were measured by Indoor Climate Analyzer -The stereotemp. and globe temp. were measured by stereothermometer

6 6 Relationship RTA=t rA -t rB =f(t stereo -t g ) from measurement. RTA = t rA -t rB = 4.1347(t stereo -t g ) – 0.2854 [°C] Relationship t rA =f(t stereo ) for various v from measurement. t rA =3.4153t stereo -57.004 [°C] pro v=0.25m/s t rA = 4.14 t stereo -74.971 [°C] pro v=0.5m/s t rA = 5.46 t stereo -108.33 [°C] pro v=1.0 m/s

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