Experimental measurements and CFD simulation of a ground source heat exchanger operating at a cold climate for a passive house ventilation system

• Published in: Energy and buildings 2014-01, Vol.68, p.562-570
• Main Authors: Flaga-Maryanczyk, Agnieszka, Schnotale, Jacek, Radon, Jan, Was, Krzysztof
• Format: Article
• Language: English
• Subjects: Applied sciences; Building technical equipments; Buildings; Buildings. Public works; CFD; Computation methods. Tables. Charts; Energy; Energy management and energy conservation in building; Environmental engineering; Exact sciences and technology; Geothermal energy; Ground source heat exchanger; Natural energy; Passive house ventilation; Residential building; Structural analysis. Stresses; Types of buildings
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2013.09.008

•We present the experimental measurements of a ground source heat exchanger.•We also present CFD simulation of a ground source heat exchanger.•The ground source heat exchanger operates for a passive house ventilation system.•February as the coldest month was under detailed investigation.•The simulations for a cold climate showed good correlation with the measured values. The paper presents the experimental measurements and numerical simulation of a ground source heat exchanger operating at a cold climate for a passive house ventilation system. The investigated passive house is a detached single-family house without a basement, occupied by a four head family, located in the South of Poland. The measurements cover over one year period and CFD (Computational Fluid Dynamics) simulations are reported for February when system operates at typical for this period and location cold climate conditions. The calculations were made with the CFD ANSYS FLUENT software package. The house and its components are fitted with a data acquisition system that is operational from 2011 and records 139 points at an interval of 1min. The data reported in the paper were recorded during winter in the year 2011/2012 by an onside located meteorological station and temperature sensors placed at different depths in the ground and at the outlet of the ground heat exchanger.