Abstract
Short time determination of the heat dynamics of buildings is a useful tool for identifying characteristic thermal parameters such as heat loss coefficient and heat accumulation. Also one or several time constants are useful in designing an efficient control of the heating system can be determined. A new method based on estimation in continuous time of linear differential equations was used. The equations are generated from a lumped parameter model of the building. Use of optimised statistical control of the heat input to the building was introduced through use of Pseudo Random Binary Sequences (PRBS) as well Principal Component Analysis (PCA) for creating the most representative air temperature from measurements at several different positions. The experiments were carried out in the Danish PASSYS (Passive Solar Systems) test cells, which have a simple geometry, are highly insulated and airtight, and are supplied with a large number of air and surface temperature sensors. The PRBS-signal controlling the heat input consists of two signals designed for each of the expected time constants of the test cell, a short time constant related to the heat capacity of the indoor air, and a long time constant related to the walls, floor and ceiling. The model
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Citation Formats
Madsen, H, and Schultz, J M.
Short time determination of the heat dynamics of buildings.
Denmark: N. p.,
1993.
Web.
Madsen, H, & Schultz, J M.
Short time determination of the heat dynamics of buildings.
Denmark.
Madsen, H, and Schultz, J M.
1993.
"Short time determination of the heat dynamics of buildings."
Denmark.
@misc{etde_10141236,
title = {Short time determination of the heat dynamics of buildings}
author = {Madsen, H, and Schultz, J M}
abstractNote = {Short time determination of the heat dynamics of buildings is a useful tool for identifying characteristic thermal parameters such as heat loss coefficient and heat accumulation. Also one or several time constants are useful in designing an efficient control of the heating system can be determined. A new method based on estimation in continuous time of linear differential equations was used. The equations are generated from a lumped parameter model of the building. Use of optimised statistical control of the heat input to the building was introduced through use of Pseudo Random Binary Sequences (PRBS) as well Principal Component Analysis (PCA) for creating the most representative air temperature from measurements at several different positions. The experiments were carried out in the Danish PASSYS (Passive Solar Systems) test cells, which have a simple geometry, are highly insulated and airtight, and are supplied with a large number of air and surface temperature sensors. The PRBS-signal controlling the heat input consists of two signals designed for each of the expected time constants of the test cell, a short time constant related to the heat capacity of the indoor air, and a long time constant related to the walls, floor and ceiling. The model describing the test cell is a second order model with two resistances and two capacities. The identification of the parameters is carried out. (AB) (28 refs.)}
place = {Denmark}
year = {1993}
month = {Nov}
}
title = {Short time determination of the heat dynamics of buildings}
author = {Madsen, H, and Schultz, J M}
abstractNote = {Short time determination of the heat dynamics of buildings is a useful tool for identifying characteristic thermal parameters such as heat loss coefficient and heat accumulation. Also one or several time constants are useful in designing an efficient control of the heating system can be determined. A new method based on estimation in continuous time of linear differential equations was used. The equations are generated from a lumped parameter model of the building. Use of optimised statistical control of the heat input to the building was introduced through use of Pseudo Random Binary Sequences (PRBS) as well Principal Component Analysis (PCA) for creating the most representative air temperature from measurements at several different positions. The experiments were carried out in the Danish PASSYS (Passive Solar Systems) test cells, which have a simple geometry, are highly insulated and airtight, and are supplied with a large number of air and surface temperature sensors. The PRBS-signal controlling the heat input consists of two signals designed for each of the expected time constants of the test cell, a short time constant related to the heat capacity of the indoor air, and a long time constant related to the walls, floor and ceiling. The model describing the test cell is a second order model with two resistances and two capacities. The identification of the parameters is carried out. (AB) (28 refs.)}
place = {Denmark}
year = {1993}
month = {Nov}
}