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Model-based control strategies are widely advocated to improve the energy efficiency of building systems but they require accurate dynamic building models, which are often difficult to obtain in practice. While modeling a multi-zone lab for model-based control, we observed that the experimental data often does not have sufficient quality for system identification. To address this problem, we propose...
In this paper, a modelling and measurement technique for propagation of indoor wireless communication considering the building's structure and human bodies residing in the building is presented. First, an effective model for simulating and measuring electromagnetic waves propagating inside inhabited buildings was suggested. Next, electric field distribution were numerically analysed and compared with...
Evaluation of historical buildings' value is one of the most important steps in the process of urban construction, and the coefficient of index system is the key of the evaluation process. This paper analyzes the observation equations in SEM and finds the least square relationship between the structural variables and observation variables. Adding a constraint with modular length to the structural...
In this paper, the thermal comfort and air distribution of stratified air conditioning system in large space is simulated by CFD method. In simulation, k-ε turbulent model is employed, and the SIMPLE algorithm is adopted. In winter design, the effects of the air supply angle, the air supply rate, air supply temperature difference, air supply spacing to influence the thermal environment are discussed.
Efficient distribution for emergency logistics is vital to alleviate the disaster impact after the occurrence of earthquake. This paper studies the distribution priority of different rescue resource. Using Risk Priority Number (RPN) methodology,a dynamic model for identifying the relief-demand urgency is built. In the new RPN model, the parameters are redefined and a set of weights are assigned to...
The spread of pathogen particles emitting from the windows of infective patient room is studied by Lagrangian-Eulerian approach. In this model, the continuous phase wind flow is simulated by the three-dimensional Reynolds-averaged Navier-Stokes equations coupled with RNG k - epsiv turbulence model and the dispersed phase pathogen particles are traced by Lagrangian model. The dispersed phase is injected...
The unsteady movement of viruses outside buildings is simulated by the method of large eddy simulation (LES). The virus source originated in a room with infective patients is described by the non-linear population dynamic model of virus infection. Considering the indoor virus emitting outside from windows, the emitting viruses are moving with airflow around buildings. The Smagorinsky-Lilly model is...
In this paper, partial least squares regression is introduced. And the modeling steps and the realization of the modeling algorithm for building a PLSR2 model are given. Moreover, a numerical example is presented.
The spread of pathogen particles emitting from the windows of infective patient room is studied by Lagrangian-Eulerian approach, hi this model, the continuous phase wind flow is simulated by the three-dimensional Reynolds-averaged Navier-Stokes equations coupled with RNG k - epsiv turbulence model and the dispersed phase pathogen particles are traced by Lagrangian model. The dispersed phase is injected...
The unsteady development of pathogens in a room with infective patients is simulated by the non-linear population dynamic model of virus infection. Assuming the indoor pathogen emitting outside from windows, the emitting pathogens are taken as a source for simulating the transmission of pathogen around buildings with airflow. The three-dimensional Reynolds-averaged Navier-Stokes equations coupled...
In this paper, Matlab and Stella softwares were used to compare the results of a daily simulation model of a micro combined heat and power system for residential purpose. From the load side, the model was based on consumer electrical and thermal load curves. On the other hand, from the power generation side, the model was based on the equations of micro-turbine, heat exchanger and boiler. At first,...
Building on the extensive research in Virtual Reality (VR), we are proposing a new dynamic prototype for modelling and simulating carbon emissions in a virtual village called VIRVIL. VIRVIL is a simulated settlement for the assessment of the impact of low and zero carbon technologies and measures in the built environment. The prototype will focus on the impact on the community as a whole, as well...
The multifractional process is introduced as a natural extension of traditional monofractional process. The selling point of multifractional process is that its Hölder regularity is allowed to vary from point to point, such that makes it a promising model for those stochastic processes whose regularity evolves in time. A new wavelet-based algorithm to synthesize a realization of multifractional process...
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