Characterization of heat dynamics of an arctic low-energy house with floor heating |
| |
Authors: | Philip Delff Andersen María José Jiménez Henrik Madsen Carsten Rode |
| |
Affiliation: | 1. DTU Compute, Matematiktorvet, Building 322, DK-2800, Kgs. Lyngby, Denmark 2. Department of Energy, Energy Efficiency in Buildings Unit, CIEMAT, Av. Complutense 22, E-28040, Madrid, Spain 3. DTU Civil Engineering, Brovej, Building 118, DK-2800, Kgs. Lyngby, Denmark
|
| |
Abstract: | This paper presents grey-box modeling of the heat dynamics of an apartment in a highly insulated test building located in the Arctic. Data from a 16-day-long experiment is analyzed and used to fit lumped parameter models formulated as coupled stochastic differential equations. The output of the models is the measured indoor air temperature, and the models are fitted using maximum likelihood techniques with the software CTSM-R. Models are compared using likelihood-ratio tests and validated considering autocorrelation and periodograms of residuals. The fitted models facilitate description of both the fast responses to mechanical ventilation and solar radiation through a large window facade, and the slow responses to floor heating and outdoor temperature. To successfully describe the dynamics of the system, solar radiation is given special attention in modeling of both the physical system and the observational noise. The estimated physical parameters which include UA-value, total heat capacity, and time constants for the apartment are discussed. Simulations are performed to illustrate step and impulse responses of inputs. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|