A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency

Reducing the energy consumption of the heating, ventilation, and air conditioning (HVAC) systems while ensuring users’ comfort is of both academic and practical significance. However, the-state-of-the-art of the optimization model of the HVAC system is that either the thermal dynamic model is simpli...

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Main Authors: Zelin Nie, Feng Gao, Chao-Bo Yan
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/2/400
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author Zelin Nie
Feng Gao
Chao-Bo Yan
author_facet Zelin Nie
Feng Gao
Chao-Bo Yan
author_sort Zelin Nie
collection DOAJ
description Reducing the energy consumption of the heating, ventilation, and air conditioning (HVAC) systems while ensuring users’ comfort is of both academic and practical significance. However, the-state-of-the-art of the optimization model of the HVAC system is that either the thermal dynamic model is simplified as a linear model, or the optimization model of the HVAC system is single-timescale, which leads to heavy computation burden. To balance the practicality and the overhead of computation, in this paper, a multi-timescale bilinear model of HVAC systems is proposed. To guarantee the consistency of models in different timescales, the fast timescale model is built first with a bilinear form, and then the slow timescale model is induced from the fast one, specifically, with a bilinear-like form. After a simplified replacement made for the bilinear-like part, this problem can be solved by a convexification method. Extensive numerical experiments have been conducted to validate the effectiveness of this model.
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spelling doaj.art-5d675f859d3f408ebd49f73c6d74a9822023-12-03T12:58:27ZengMDPI AGEnergies1996-10732021-01-0114240010.3390/en14020400A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with ConsistencyZelin Nie0Feng Gao1Chao-Bo Yan2State Key Laboratory for Manufacturing Systems Engineering, School of Automation Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, School of Automation Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, School of Automation Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaReducing the energy consumption of the heating, ventilation, and air conditioning (HVAC) systems while ensuring users’ comfort is of both academic and practical significance. However, the-state-of-the-art of the optimization model of the HVAC system is that either the thermal dynamic model is simplified as a linear model, or the optimization model of the HVAC system is single-timescale, which leads to heavy computation burden. To balance the practicality and the overhead of computation, in this paper, a multi-timescale bilinear model of HVAC systems is proposed. To guarantee the consistency of models in different timescales, the fast timescale model is built first with a bilinear form, and then the slow timescale model is induced from the fast one, specifically, with a bilinear-like form. After a simplified replacement made for the bilinear-like part, this problem can be solved by a convexification method. Extensive numerical experiments have been conducted to validate the effectiveness of this model.https://www.mdpi.com/1996-1073/14/2/400bilinear modelconvex relaxation methodenergy consumptionmulti-timescale optimizationuser comfort
spellingShingle Zelin Nie
Feng Gao
Chao-Bo Yan
A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
Energies
bilinear model
convex relaxation method
energy consumption
multi-timescale optimization
user comfort
title A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
title_full A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
title_fullStr A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
title_full_unstemmed A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
title_short A Multi-Timescale Bilinear Model for Optimization and Control of HVAC Systems with Consistency
title_sort multi timescale bilinear model for optimization and control of hvac systems with consistency
topic bilinear model
convex relaxation method
energy consumption
multi-timescale optimization
user comfort
url https://www.mdpi.com/1996-1073/14/2/400
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