An expat in Beijing once wrote these words on his blog,"If you are anxious to exchange your valuables for cash,or want to collect some treasures in Beijing,you may visit Bao Rui Tong Pawn Shop which features agre...An expat in Beijing once wrote these words on his blog,"If you are anxious to exchange your valuables for cash,or want to collect some treasures in Beijing,you may visit Bao Rui Tong Pawn Shop which features agreeable environment,reliable credit,guaranteed quality and profes- sional service."That releases the com-展开更多
A deterministic approach to building energy simulation risks the omission of real-world uncertainties leading to prediction errors.This paper highlights limitations of this approach by contrasting it with a probabilis...A deterministic approach to building energy simulation risks the omission of real-world uncertainties leading to prediction errors.This paper highlights limitations of this approach by contrasting it with a probabilistic uncertainty/sensitivity simulation approach.Latin hypercube sampling(LHS)generates 15000 unique model configurations to assess the effects of weather,physical and operational uncertainties on the annual and peak cooling energy demands for a residential building which situated in a hot and dry climatic region.Probabilistic simulations predicted 0.22–2.17 and 0.45–1.62 times variation in annual and peak cooling energy demands,respectively,compared to deterministic simulation.A novel density-based global sensitivity analysis(SA),i.e.,PAWN,is adopted to identify dominant input uncertainties.Unlike traditional SA methods,PAWN allows simultaneous treatment of continuous and categorical inputs from a generic input-output sample.PAWN is favourable when computational resources are limited and model outputs are skewed or multi-modal.For annual and peak cooling demands,the effects of weather and operational parameters associated with airconditioner and window operation are much stronger than these of other parameters considered.Consequently,these parameters warrant greater attention during modelling and simulation stages.Bootstrapping and convergence analysis also confirm the validity of these results.展开更多
文摘An expat in Beijing once wrote these words on his blog,"If you are anxious to exchange your valuables for cash,or want to collect some treasures in Beijing,you may visit Bao Rui Tong Pawn Shop which features agreeable environment,reliable credit,guaranteed quality and profes- sional service."That releases the com-
基金The authors would like to acknowledge the funding received from the Department of Science and Technology,Government of India(DST/TMD/UKBEE/2017/17)Projects:Zero Peak Energy Demand for India(ZED-I)and Engineering and Physics Research Council EPSRC(EP/R008612/1).
文摘A deterministic approach to building energy simulation risks the omission of real-world uncertainties leading to prediction errors.This paper highlights limitations of this approach by contrasting it with a probabilistic uncertainty/sensitivity simulation approach.Latin hypercube sampling(LHS)generates 15000 unique model configurations to assess the effects of weather,physical and operational uncertainties on the annual and peak cooling energy demands for a residential building which situated in a hot and dry climatic region.Probabilistic simulations predicted 0.22–2.17 and 0.45–1.62 times variation in annual and peak cooling energy demands,respectively,compared to deterministic simulation.A novel density-based global sensitivity analysis(SA),i.e.,PAWN,is adopted to identify dominant input uncertainties.Unlike traditional SA methods,PAWN allows simultaneous treatment of continuous and categorical inputs from a generic input-output sample.PAWN is favourable when computational resources are limited and model outputs are skewed or multi-modal.For annual and peak cooling demands,the effects of weather and operational parameters associated with airconditioner and window operation are much stronger than these of other parameters considered.Consequently,these parameters warrant greater attention during modelling and simulation stages.Bootstrapping and convergence analysis also confirm the validity of these results.
