Arrangement for cooling the exhibition halls

Concretisation of the measure

The aim was to not cool the rooms more than necessary and thus maintain the participants’ ability to concentrate. Also the difference between inside and outside should not lead to a „cold shock” and thus save energy costs.

Preparation within the framework of the Kirchentag in Dortmund

During an inspection of the exhibition halls, the most efficient and energy-saving cooling of the premises was discussed with the operators in advance. Various scenarios were considered. In accordance with the technical possibilities of the ventilation system, an attempt should be made to „build up a cooling buffer” in the morning, i. e. if the coolness of the night allows it, to cool down to 18 degrees indoors.
During the event, the exhibition halls should only be cooled to 26 degrees Celsius instead of the usual 20-23 degrees. From 31 degrees outside, the temperature inside should rise with a delta of 5 degrees Celsius. The coolness of the night should also be used to remove heat from the interior and to provide the interior with night-time fresh air.

During the implementation of the Kirchentag in Dortmund

The measure was implemented as discussed, even though the temperatures were not as extreme as at the previous events in Berlin and Stuttgart.

Environmental/climate protection aspect

The measures

1. ) Set up a cooling buffer (start the day with 18 degrees, if it is possible without air conditioning)

2. ) Start air conditioning with delta 1 at 26 degrees outside temperature and gradually expand to delta 5 up to 31 degrees, then become warmer with the outside temperature

support the reduction of power consumption for cooling.

Climate adaptation aspect

Air conditioning systems will play an even more important role in the future. Without new concepts energy consumption will place a greater burden on event costs.

Cost/benefit/effort

Low effort for (with appropriate weather conditions) high savings of costs. In addition, the technical equipment is less heavily loaded.