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Description

The validated PHPP8.5 document for the design, modelling, and certification of LT-PH3, the first single-family passive house in Lithuania, is provided. It contains all the key data on the building and its surroundings that were used in studies [S1] and [S2]. Study [S1] evaluated the first single-family “passive house” in Lithuania (LT-PH3), built in Vilnius and certified by the German Passive House Institute in 2015. The aim of the study was to investigate the correlation between the heat consumption of the LT-PH3 building, as modelled during the design process, and the measured operational data, to increase confidence in the application of the “Passive House” standard. The study presents a detailed analysis of the 2016–2020 monitoring results, based on measured data on the heat pump’s electricity consumption and outdoor and indoor air temperatures. The seasonal parameters of the heat pump were evaluated using the “Passive House Planning Package” (PHPP) and the “Aquarea Designer Online Simulation Software Tool” (Aquarea), while the building’s operational heat consumption was analysed and compared with the design consumption obtained using: PHPP for design, “Swegon ESBO Light” (Swegon) to validate the design using PHPP, and the Lithuanian National Building Energy Performance Certification Program “NRGsert.” The study showed that the design heat consumption modelled by PHPP and “Swegon” is close to the operational heat consumption, both calculated based on electricity consumption and measured by a heat meter. This confirmed that when modelling one of the key comfort criteria—the building’s actual indoor air temperature and the heat flow required to maintain it—results close to actual operational performance can be expected. Based on these results, the LT-PH3 PHPP 8.5 model was selected as the primary [S2] analysis tool for this study, and the LT-PH3 basic comparative data (BCD) were used as a constant.

Steps to reproduce

This LT-PH3 PHPP8.5 modeling document was created during the project's development in 2013–2014.

Institutions

• Lithuanian Energy Institute

  Kaunas, Kaunas

Categories

Licence