Post am Rochus
 

Post am Rochus is a large multifunctional building (47300 m² gross floor area) combining office and retail space. It was designed to the Passive House Standard and was completed in 2017 for the Österreichische Post AG. A 5000 m² of retail space is located at the ground floor, first floor and lower ground floor of the building, while the upper floors house the Austrian Post headquarter offices. The building has a complex energy supply system. The project received a number of 1st Prize awards. 

Project Information
 
Location
Vienna, Austria
Building Typology
Office and retail space
Technology Installed / Proposed

Building control strategies, building sensing and automation.

Data Availability

TBC

Status
Operational - results available

The aim of the building owner was to obtain a modern comfortable building with very high standards regarding sustainability and energy efficiency, not only in the operational phase but also during the execution phase and commissioning. Therefore, the goal was to shorten the commissioning phase by a very detailed study and optimization of control strategies of the HVAC systems along with the involved planning, construction, and operational project team. Within the project the building was scientifically monitored and the following technologies in the HVAC system were used: 

  • three highly efficient compression chillers with 1 MW capacity each, 
  • the option for heat recovery during cooling season (reheat-coil during dehumidification), 
  • the utilization of a 320 m3 sprinkler water basin as cold temperature storage for free-cooling (via recoolers) 
  • concrete core activation for cooling, and 
  • the major air handling units are equipped with latent and sensible heat recovery (enthalpy rotor with bypass). 

The heating energy for concrete core activation and fan coils is supplied by the local district heating grid. Service hot water is prepared decentralised by electric heaters. 

Some information was provided by the paper “Educated commissioning and operation of a complex nearly zero energy office building with the help of dynamic thermal HVAC-simulations – a best practice report from the Austrian postal service headquarter Post am Rochus”. To cite this article: P Horn et al. 2019 J. Phys.: Conf. Ser. 1343 012137 


For more information on the Case Study
Contact Person: Gundula Weber
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