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Assessing the value of information in residential building simulation: Comparing simulated and actual building loads at the circuit leve

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建筑节能(中英文) 2017年第10期 132-132页

作者： Brock Glasgo chris hendrickson Inês Lima Azevedo

Building energy simulation tools are now being used in a number of new roles such as building operation optimization,performance verification for efficiency programs,and-recently-building energy code analysis,design, and compliance verification in the residential sector. But increasing numbers of studies show major differences between the results of these simulations and the actual measured performance of the buildings they are intended to model. The accuracy and calibration of building simulations have been studied extensively in the commercial sector,but these new applications have created a need to better understand the performance of home energy *** this paper,we assess the ability of the DOE's EnergyPlus software to simulate the energy consumption of 106 homes using audit records,homeowner survey records,and occupancy estimates taken from monitored *** compare the results of these simulations to device-level monitored data from the actual homes to provide a first measure of the accuracy of the EnergyPlus condensing unit, central air supply fan, and other energy consumption model estimates in a large number of *** then conduct sensitivity analysis to observe which physical and behavioral characteristics of the homes and homeowners most influence the accuracy of the *** show that EnergyPlus models do not accurately or consistently estimate occupied whole-home energy *** some models accurately predict annual energy consumption to within1%of measured data, none of the modeled homes meet ASHRAE criteria for a calibrated model when looking at hourly interval data. The majority of this error is due to appliance and lighting energy overestimates,f ollowed by AC condensing unit use. These inaccuracies are due to factors such as occupant behaviors and differences in appliance and lighting stocks which are not well-captured in traditional energy audit *** identify a number of factors which must be specified for an accu

关键词： EnergyPlus Residential Simulation Energy code

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