Co-simulation of a HVAC system-integrated phase change material thermal storage unit

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Title: Co-simulation of a HVAC system-integrated phase change material thermal storage unit
Authors: Jones, A. T.Finn, Donal
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Date: 2017
Online since: 2020-09-08T10:49:59Z
Abstract: A co-simulation environment, consisting of a detailed mathematical model of a thermal energy storage unit which is incorporated with an EnergyPlus simulation model of a full building HVAC system, is described. The two models are integrated using the user-defined plant component feature in EnergyPlus and the Building Controls Virtual Test Bed (BCVTB) environment. The thermal energy storage unit, which consists of encapsulated phase change material in a series of flat plates and a heat transfer working fluid (water), is modelled using a transient one-dimensional forward finite difference method. The thermal storage model is executed within MATLAB and is verified against experimental data, showing a discharging heat transfer accuracy to within 2.5%. The building model, which incorporates a retrofitted ground source heat pump system within a thermally massive building, is simulated in the EnergyPlus environment. The co-simulation arrangement allows for in-depth analysis of the integrated system under dynamic operating conditions, which is currently not possible within the EnergyPlus environment. Moreover, the overall adopted approach, based on generic integration of a detailed mathematical model, using a third party generalised programming environment, into an established building simulation environment, serves as a successful exemplar for other researchers and practitioners working in the field.
Funding Details: European Commission - Seventh Framework Programme (FP7)
Type of material: Journal Article
Publisher: Taylor & Francis
Journal: Journal of Building Performance Simulation
Volume: 10
Issue: 3
Start page: 313
End page: 325
Copyright (published version): 2016 International Building Performance Simulation Association
Keywords: Thermal energy storagePhase change materialsEnergyPlusBCVTBModelling
DOI: 10.1080/19401493.2016.1257068
Language: en
Status of Item: Peer reviewed
Appears in Collections:Mechanical & Materials Engineering Research Collection

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