This paper investigates the case building’s cooling effect, energy saving, and carbon sequestration with green facade roof. The west east GF is covered wisteria, GR planted different kinds of vegetables. effect analyzed by field test. saving deeply discussed EnergyPlus software simulation. Carbon sequestrations are calculated considering both plant photosynthetic test results show that average external surface temperature reduction GF, 4.5°C, 4.2°C, 9.7°C on sunny days, 1.3°C, 1.4°C...

In order to get more comprehensive operation performance on indoor environment quality (IEQ) and energy consumption, a long-time measurement field occupants’ satisfaction survey IEQ of the first three-star-operation-certified green office building in Ningbo city China have been conducted, environmental efficiency (EEE) also has analyzed. Moreover, consumption case are compared with other example buildings same climate zone literatures. The results show that actual thermal isn’t quite...

The cooling load calculation of building envelopes is important for design to realize energy efficiency. A simplified way predict the envelope loads desperately needed with various construction layouts and energy-saving effect reconstruction measures buildings. In light this need a model proposed in paper. based on dynamic hourly calculations using EnergyPlus. It considers almost all thermal factors about which may affect it studied by dimensional analysis. equivalent window wall ratio...

Digital twin realizes the transformation from physical model to digital model, tracks whole life cycle of in real time and feeds back continuously. The concept is used realize design development intelligent motor system. It can monitor motor, shorten maintenance equipment, equipment time, ensure normal operation equipment. system great significance improving plant efficiency, reducing cost.

The median frequency (MF) and mean power (MPF) have been confirmed as reliable indicators of muscle fatigue during sustained contractions. purpose this study was to explore whether single-monitor arm could release in neck-shoulder region while maintaining a prolonged seated posture viewing computer screen by measuring MF MPF. Ten male healthy university students volunteered participate the test. Surface electromyography splenius capitis (SC) trapezius (TR) were recorded. Each subject...

According to the processing characteristics of high energy consumption and low efficiency China's CNC surface grinding machine, this paper studies influence process parameters on system, determines wheel speed, feed speed worktable depth as main parameters, in which has greatest consumption. Then, prediction model system based BP neural network is established, above three factors are used input additional load loss power. After training model, ratio machine can be predicted. The results show...

A kind of narrow-linewidth fiber laser was developed. segment Er-doped is connected after the active phase-shifted grating. distributed feedback (DFB) realized using a 980 nm for pump. The erbium ions in are pumped from ground-state to excited state by residual pump power, so output power DFB amplified effectively, and fully used. In this way, consumption cost reduced greatly. Temperature-control techniquc used deal with temperature-sensitivity laser. high-frequency modulation piezo-electric...

This article presents a kind of exergy analysis combined with LCA to evaluate the building envelope energy efficiency retrofit. A typical case in Ningbo city China is analysed. The results show that it takes 15 years for cumulative saved consumption use stage equal embodied newly added insulation materials product stage. Yet, impossible equals lifespan after So and retrofit measures should be accounted as whole.

The purpose of this paper is to investigate the optimal air gap thickness PV wall in different modes (unclosed, partially-enclosed, enclosed). Based on heat transfer models and evaluation indexes wall, electrical thermal performances are analyzed with experimental method COMSOL software. results show that 100 mm can be selected as optimum size for gap. computed a 50 fully enclosed best, daily total energy savings 328.06 Wh/m 2 , but it not obvious compared mm. Therefore, scheme winter use...

This paper analyses the exergy of air in building affected by reference state, considering parameters temperature and humidity air. Taking TMY data 25 typical cities different thermal climate zones China chemical physical air, influenced dynamic static state is comparatively analysed. The results showed that for those buildings need cooling summer, contribution should be paid attention to. It acceptable to consider a environment only, instead environment, calculating value heating period.

The purpose of this paper is to obtain the optimal filling scheme for improving thermal performance prefabricated sintered hollow wallboard considering both summer and winter conditions, achieve self-insulation. Effects different measures installing separated paperboard, Phase Change Material (PCM) Thermal Insulation (TIM) in are studied by experiment COMSOL numerical methods. Firstly, paperboard installed middle all cavities reduce convection heat transfer. results show that average peak...