Comparison of two HVAC renovation solutions: A case study
2013 (English)In: CLIMA 2013, Prague, June 16-19, 2013, 2013Conference paper, Abstract (Refereed)
Within the aging building stock of Europe, there is great potential of saving energy through renovation and upgrading to modern standards, and to thereby approach the internationally set goals of lower energy use. This paper concerns the planned renovation of the building envelope and HVAC systems in a multi-family house in Ludwigsburg, Germany. Five systemic HVAC solutions were compared, with special focus on two systems: A) Balanced ventilation with HRC + Micro heat pump, and B) Forced exhaust ventilation + Heat pump with exhaust air HRC + Ventilation radiators. Given the predicted heating demand and ventilation rate of the house after renovation, the performance of the two systems was compared, alongside three common systems for reference. Calculations were made using TMF Energi, a tool developed by SP Technical Research Institute of Sweden.
Both systems A and B were found to have the lowest electrical energy use together with the ground source heat pump system for the assumed conditions. For other assumptions, including different climate and degree of insulation, some differences between these three systems were noted. Most significant is the increased electrical use of system B for higher heating loads due to limitations in the power available from the heat source, exhaust air, which is dependent on the ventilation rate.
Place, publisher, year, edition, pages
energy renovation; HVAC; system comparison; low-energy house; ventilation radiator; micro heat pump
IdentifiersURN: urn:nbn:se:kth:diva-136293OAI: oai:DiVA.org:kth-136293DiVA: diva2:675725
CLIMA 2013, Prague, June 16-19, 2013
FunderEU, FP7, Seventh Framework Programme, 314461
QC 201312182013-12-042013-12-042015-09-04Bibliographically approved