Download the complete journal here: 5/2013 (PDF) or read and download individual articles.


4    Editorial - REHVA in the 2000 millennium
 Olli Seppänen


7    Refrigerants - Part 1: properties and air – conditioning applications
 Branimir Pavkovic

12  Practical experience with a fuel cell unit for Combined Heat and Power (CHP) generation on the building level     
      Klaus Sommer, Eva Mesenhöller

18  The cost optimal methodology applied to an existing office in Italy
Cristina Becchio, Stefano P. Corgnati, Enrico Fabrizio, Valentina Monetti

24  Special HVAC Solutions for the Refurbishment of Historic Buildings
Rainer Pfluger

29  French building regulation sets 50 kWh/(m²a) a limit for primary energy use
      Christian Feldmann

33  Heat pump options for low energy office buildings in cold climate
      Natasa Nord, Jostein Wall

37  Frost-protection measures in energy recuperation with multiple counterflow heat exchangers
      Raffael Ahmed, Julian Appelhoff

Frost-protection measures in energy recuperation with multiple counterflow heat exchangers (Full version)     
Raffael Ahmed,
Julian Appelhoff

41  Achieve superior energy performance of hydronic systems by enabling the latest pump technology
      Carsten Østergård Pedersen, Anders Nielsen

47  Personal Control Over Heating, Cooling and Ventilation – results of a workshop at Clima 2013 conference
      Atze Boestra, Angela Simona


52  Energy use and thermal comfort of two apartment buildings before and after refurbishment in Slovakia
      Veronika Földváry, Lucia Borisová, Dušan Petráš

58  Conceptual design of plus energy single family house in Warsaw, Poland
      Marcin Wronowski


63  Is CO2 an Indoor Pollutant?
      William J. Fisk, Usha Satish, Mark J. Mendell, Toshifumi Hotchi, Douglas Sullivan


65  REHVA Task Forces – backbone of the REHVA Technical activities
     Jorma Railio, Jarek Kurnitski, Livio Mazzarella