The irreversible evolution of buildings

TY - JOUR

T1 - The irreversible evolution of buildings

AU - Bonetti, V.

AU - Robazza, P.

PY - 2016/11/21

Y1 - 2016/11/21

N2 - Buildings, which are in fact ecosystems (living and inanimate organisms interacting together), are nowadays conceived and operated on the base of energy assessments underpinned by the first law of thermodynamics, and design strategies work towards energy conservation. Different approaches, based on the second law of thermodynamics, exist in research; they use the thermodynamic function called exergy - a measure of energy quality obtained from the combination of first and second law - and their scope is still centred on conservation strategies, optimised through irreversibility reduction. However, irreversibility plays a key role in nature, as entropy production dictates direction and modality of all processes and real phenomena are actually irreversible. The main problem related to the forefront of high-efficiency buildings is their high cost and complexity, which contrast stridently with the needs of the largest part of the built environment: effective low-budget sustainable solutions, easy to raise and control by non-specialised users. This research, through a pragmatic methodology, mixes practical experiences from low-budget construction sites with concepts from the relatively new discipline of non-equilibrium thermodynamics, and proposes an alternative energy design approach based on the second law of thermodynamics. Thinking of buildings as evolving ecosystems, their ability to perceive and exploit useful gradients can be enhanced through a deeper understanding of the role of irreversibility as the driving force of spontaneous processes, and imperfection as an intrinsic characteristic of architecture.

AB - Buildings, which are in fact ecosystems (living and inanimate organisms interacting together), are nowadays conceived and operated on the base of energy assessments underpinned by the first law of thermodynamics, and design strategies work towards energy conservation. Different approaches, based on the second law of thermodynamics, exist in research; they use the thermodynamic function called exergy - a measure of energy quality obtained from the combination of first and second law - and their scope is still centred on conservation strategies, optimised through irreversibility reduction. However, irreversibility plays a key role in nature, as entropy production dictates direction and modality of all processes and real phenomena are actually irreversible. The main problem related to the forefront of high-efficiency buildings is their high cost and complexity, which contrast stridently with the needs of the largest part of the built environment: effective low-budget sustainable solutions, easy to raise and control by non-specialised users. This research, through a pragmatic methodology, mixes practical experiences from low-budget construction sites with concepts from the relatively new discipline of non-equilibrium thermodynamics, and proposes an alternative energy design approach based on the second law of thermodynamics. Thinking of buildings as evolving ecosystems, their ability to perceive and exploit useful gradients can be enhanced through a deeper understanding of the role of irreversibility as the driving force of spontaneous processes, and imperfection as an intrinsic characteristic of architecture.

KW - exergy

KW - spontaneous processes

KW - buildings

KW - irreversibility

KW - low-cost

UR - http://www.witpress.com/journals/dne

U2 - 10.2495/DNE-V12-N2-167-175

DO - 10.2495/DNE-V12-N2-167-175

M3 - Article

VL - 12

SP - 167

EP - 175

JO - International Journal of Design and Nature and Ecodynamics

T2 - International Journal of Design and Nature and Ecodynamics

JF - International Journal of Design and Nature and Ecodynamics

SN - 1755-7437

IS - 2

ER -