Wei Jiang

Heilongjiang Bayi Agricultural University · College of Engineering

To take into account the crop growth of greenhouse and reduce energy consumption, this study investigated to optimize and retrofit a typical solar greenhouse in the severe cold climate of China into a net-zero energy solar greenhouse (NZESG). The envelope passive insulation measure and roof flexible photovoltaic (PV) technique are innovatively comb...

This work proposes a novel type of shell and tube latent thermal energy storage unit (LTESU). Effects of the thermal conductivity of PCM, the inlet temperature of heat transfer fluid (HTF), the inlet velocity of HTF and fin layout (fin length and distribution) on the thermal performance and exergy efficiency of the LTESU are numerically investigate...

The retrofit of building envelopes in rural areas is a necessary measure to reduce building energy consumption. However, the traditional retrofit strategy is mostly a subjective decision, therefore, a scientific and objective evaluation method is proposed, which is a multi-factor and multi-objective preferred method based on orthogonal tests and en...

Light steel buildings are widely used in rescue and disaster relief, but they consume a lot of energy to improve the indoor thermal environment due to their high thermal conductivity and poor thermal comfort. To clarify the relationship between various design parameters and their effect on energy consumption, the energy consumption impact of the de...

The roof is the most significant in the energy consumption of building envelopes in severe cold area. The poor thermal performance of the prefabricated house roof leads to the increase in heating energy consumption and an uncomfortable indoor thermal environment. The purpose of this study is to explore the energy-saving retrofit technology of prefa...

Using phase change material (PCM) into the building envelope is considered an effective thermal energy storage strategy to improve building thermal performance and reduce space heating/cooling loads. However, different phase transition temperatures and climatic conditions have a huge impact on application effect. This paper investigates the effects...

The protective energy-saving retrofitting (PESR) of heritage buildings (HBs) is one of the essential aspects of building carbon-dioxide abatement. The present work validates and optimizes PESR measures for a typical rammed earth HB (REHB) based on multi-objective optimization and building information modelling (BIM). The addition of internal therma...

Current regional ground motion prediction models (GMPMs) of areas lacking strong earthquake records employ imperfect methods or earthquake records. A new weighting method of seismology to clarify the application scope of point-source and finite-fault models is proposed in this study. According to the local small earthquake data, five regional param...

To significantly reduce non-renewable resources and carbon emissions of rural houses, this study investigates to retrofit an existing house into net-zero energy consumption rural house (NZERH). The integral passive energy-saving retrofit and building attached/applied photovoltaic (BAPV) technique are innovatively combined and used in a typical rura...

Thermal performance of window frame and glazing pane are significant for its energy saving. In the present work, the energy consumption of various windows in the rural residence of severe cold climate was investigated on the basis of the thermal performance analysis of glass and frames. Based on EnergyPlus + multi-objective gradual exploration, the...

Appropriate management and optimization of energy consumption provides great support for the sustainable development of rural buildings. Although some research results are helpful for the energy-saving design and transformation of rural residential buildings, there is no systematic analysis of the impact of energy consumption parameters on energy-s...

In this study, a multi-physics coupled mathematical model was established on thermal stress distribution of double-glazed units with phase-change material (PCM-glazed) for the transient temperature fields and non-uniform intermittent solar irradiation, and the mathematical calculations are in good agreement with the experimental results, which show...

In this work, a detailed investigation is carried out to evaluate the effects of using sunspace on heating energy consumption of a rural house by considering utilized sunspace glazing type, the filling gas type and the gas layer thickness. In the first part of the study, the effect of a sunspace on the energy consumption of a typical rural building...

The uncertainty of ground motion attenuation and its correction in PSHA is deal with in this paper. Mean values and standard deviations of random errors of three attenuation relationships of NGA-west1 are analyzed statistically from the data base released by the project. The dependences of the mean and deviation on magnitude, distance and peak grou...

The ground motions on two dam sites during the great Wenchuan earthquake with magnitude 8.0, motions are synthesized from 30 finite fault based hybrid source models and inversed regional parameters of source spectrum and motion attenuation. The results show that the peak ground acceleration values are less than those estimated directly from the Int...

In order to study the characteristics of ground motions at the two dam sites damaged during the great Wenchuan earthquake in 2008, the motions at two observation stations nearby are synthesized in this paper. 30 finite fault based hybrid source models of the great Wenchuan earthquake with magnitude 8.0 is built. The global and local parameters are...

The author did numerical experient on the seismic behavior of fram-surpported shear wall structure,then proposed a method of fuzzy neural network forrecast besed on second-time comprehensive evaluation for training and forecast with all these experiment mertiarials.The result shows that this method can forecast the seismic behavior of fram-surpport...

Freeze-thaw made the microstructure of the soil produce a certain degree of damage, which was relevant with the soil water content. 6 kinds of remolded soil of the water content was prepared, at low temperature of freezed, in room temperature of melt, after not consolidated non-drained triaxial compression test, the soil shear strength parameters w...

Evaluation approach of occurrence probability for subduction-zone earthquakes adopted in "National Seismic Hazard Maps for Japan" is reviewed, especially for the area of the 2011 off the Pacific coast of Tohoku Earthquake (2011 Tohoku Earthquake in short). One problem is pointed that the occurrence probability of such a large earthquake cannot be p...

In order to forecast the butt welding deformation of the medium thickness plate, and achieve the structural accuracy by target control measures, the method of genetic neural network is used to establish a three-layer network model, which is trained according to the training sample data. The trained genetic neural network is used to predict the butt...