Sebastian Herkel, Jens Pfafferott

Fraunhofer ISE, Abt. TOS, HeidenhofstraKe 2, D-79110 Freiburg, (0761) 4588-5117 sebastian. herkel @ise. fhg. de

Due to high internal and solar heat gains, office buildings are at the borderline between active and passive cooling. If the heat gains are minimised, they can be counterbalanced by passive cooling during the nights. Due to the building’s thermal inertia, heat gains and heat dissipation can be decoupled and the building provides comfortable room temperatures without an energy demand for active cooling. This paper focuses on the data analyses in three low-energy office buildings, gives hints on the building design and shows limits of passive cooling concepts.

Introduction

In the framework of the German funding Programme "Solar Optimised Buildings” [1] of the German Ministry for Economics and Labour, the Lamparter building [2], the Pollmeier building [3] and the Fraunhofer ISE building [4] have been monitored for 2 years. These long-term monitoring campaigns were complemented with short-term measurements. In summer 2002 and 2003, experiments were carried out to determine the thermal behaviour. During the experiments, meteorological data, air change rates, air temperatures, surface temperatures, and operative room temperatures were measured.

Fraunhofer ISE Pollmeier Massivholz GmbH Hans Lamparter GBR

Freiburg, 2001. Creuzburg, 2001. Weilheim a. d. Teck, 2000.