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| 1 | Investigation of prototype thermoel- ectric domestit-ventilator 显示文摘 | LiTao Tang Guang-fa Gong Guangcai | 2009 | Applied Thermal Engineering2009，29，10： | 1 |
| 2 | Numerical investigation of the effect of helix angle and leaf margin on the flow pattern and the performance of the axial flow cyclone separator显示文摘 | GONG Guangcai YANG Zhouzhou ZHU Shaolin | 2012 | Applied MathematicalModelling2012，36，8： | 1 |
| 3 | A new heat recovery technique for air-conditioning/heat- pump system 显示文摘 | Gong Guangcai Zeng Wei Wang Liping | 2008 | Applied Thermal Engineering2008，28，1718： | 1 |
| 4 | Investigation of exhaled pollutant distribution in the breathing microenvironment in a displacement ventilated room with indoor air stability conditions显示文摘This study experimentally studied the dispersion of exhaled pollutant in the breathing microenvironment(BM)in a room equipped with a displacement ventilation(DV)system and indoor air stability conditions(i.e.,stable and unstable conditions).The vertical temperature differences and the carbon dioxide(CO_(2))concentration in the BM were measured.Results show that when DV is combined with the stable condition(DS),pollutant tends to accumulate in the BM,leading to a high pollutant concentration in this region.Whereas,when DV is combined with the unstable condition(DU),pollutant diffuses to a relatively wider area beyond the BM,thus the pollutant concentration in the BM is substantially reduced.Moreover,increasing the flow rate can reduce the pollutant concentration in the BM of the DS but yields little difference of the DU.In addition,personal exposure intensity increases with time,and the DS has a relatively higher increase rate than DU.The results suggest that indoor air stability will affect the performance of DV systems.DS will lead to a higher health risk for people when they stay in the indoor environment with pollutant sources,and DU is recommended for minimizing pollutant level in the BM in order to reduce the pollutant concentration and providing better air environments for the occupants. | Xiaorui Deng Guangcai Gong | 2021 | Journal of Environmental Sciences2021，33，1： | 1 |
| 5 | Numerical simulation of indoor suspen- sion particles based on v2-f model显示文摘 | Kongqing Li Guangcai Gong | 2012 | Applied Mathematical Modelling2012，36，： | 1 |
| 6 | Thermodynamic performance assessment of vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system(VMD-ACERS)显示文摘Temperature and humidity independent control(THIC)air-conditioning system is a promising technology.In this work,a novel temperature and humidity independent control(THIC)system is proposed,namely VMD-ACERS,which integrates vacuum membrane-based dehumidification and air carrying energy radiant air-conditioning system.This work establishes a novel coefficient of performance(COP)model of VMD-ACERS.The main parameters affecting the COP of conventional fan coil unit cooling system(FCUCS)and VMD-ACERS are investigated.The performance of FCUCS and VMD-ACERS are compared,and the energy-saving potential of VMD-ACERS is proved.Results indicate that,for FCUCS,the importance ranking of parameters is basically stable.However,for VMD-ACERS,the importance ranking will be affected by FCU and refrigerant.The most important parameters of VMD-ACERS are condensation temperature and permeate side pressure.On the contrary,superheating,subcooling are relatively less important parameters.For VMD-ACERS,it is not necessary to pursue the membrane with very high selectivity,because the selectivity of membrane would also be a less important parameter when it reaches 500.The COP of VMD-ACERS is higher than that of FCUCS when the permeate side pressure is higher than 8 k Pa.The VMD-ACERS solves two technical problems about power-saving and thermal comfort of conventional THIC,and can extend the application of THIC air-conditioning system. | Liang Chun Guangcai Gong Xi Fang Pei Peng | 2021 | Chinese Journal of Chemical Engineering2021，34，6： | 1 |
| 7 | A new heat recovery techniqueflor air-conditioning/Heat-pump system显示文摘 | Gong Guangcai | | 0，，28： | 1 |
| 8 | Research on frost formation in air source heat pump at cold-moist conditions in central-south china显示文摘 | Gong Guangcai Tang Jinchen Lv Dongyan | 2013 | Applied Energy2013，，10： | 1 |
| 9 | A new heat recovery technique for air-conditioning/heat-pump system显示文摘 | Gong Guangcai Zeng Wei Wang Liping | 2008 | Applied Thermal Engineering2008，28，1718： | 1 |
| 10 | A new heat recovery technique for air-conditioning/heat-pump system 显示文摘 | Gong Guangcai Zeng Wei Wang Liping | 2008 | Applied Thermal Engineering2008，28，1718： | 1 |
| 11 | A new heat recovery technique for air-conditioning/heat-pump system 显示文摘 | Guangcai Gong Wei Zeng Liping Wang | 2008 | Applied Thermal Engineering2008，28，1718： | 1 |
| 12 | A new heat recovery technique for air-conditioning/heat-pump system 显示文摘 | GUANGCAI GONG | 2008 | Applied Thermal Engineering2008，28，5： | 1 |
| 13 | Thermodynamic simulation of condensation heat recovery characteristics of a single stage centrifugal chiller in a hotel显示文摘 | Gong Guangcai Chen Feihu Su Huan | 2012 | Applied Energy2012，91，8： | 1 |
| 14 | A new heat recovery technique for air-conditioning/heat-pump system显示文摘 | Gong Guangcai Wei Zeng | 2008 | Appl ThermEng2008，28，17： | 1 |
| 15 | A new heat recovery technique for air-conditioning/heat-pump system显示文摘 | GONG Guangcai | 2008 | Applied Thermal Engineering2008，，28： | 1 |
| 16 | Numerical investigation of the effect of helix angle and leaf margin oe the flow pattern and the perfornmnce of the axial flow cyclone separator显示文摘 | GONG Guangcai YANG Zhouzhou ZHU Shaolin | 2012 | Applied mathematical modelling2012，36，8： | 1 |
| 17 | A new heat recovery technique for air - conditioning/Heat - pump system 显示文摘 | Gong Guangcai | 2008 | Applied Thermal Engineering2008，，28： | 1 |
| 18 | A new heat recovery technique for air-conditioning / heat-pump system 显示文摘 | Gong guangcai Zeng Wei Wang Liping | 2008 | Applied Thermal Engineering2008，28，1718： | 1 |
| 19 | Predicting indoor particle dispersion under dynamic ventilation modes with high-order Markov chain model显示文摘Mechanical and natural ventilations are effective measures to remove indoor airborne contaminants,thereby creating improved indoor air quality(IAQ).Among various simulation techniques,Markov chain model is a relatively new and efficient method in predicting indoor airborne pollutants.The existing Markov chain model(for indoor airborne pollutants)is basically assumed as first-order,which however is difficult to deal with airborne particles with non-negligible inertial.In this study,a novel weight-factor-based high-order(second-order and third-order)Markov chain model is developed to simulate particle dispersion and deposition indoors under fixed and dynamic ventilation modes.Flow fields under various ventilation modes are solved by computational fluid dynamics(CFD)tools in advance,and then the basic first-order Markov chain model is implemented and validated by both simulation results and experimental data from literature.Furthermore,different groups of weight factors are tested to estimate appropriate weight factors for both second-order and third-order Markov chain models.Finally,the calculation process is properly designed and controlled,so that the proposed high-order(second-order)Markov chain model can be used to perform particle-phase simulation under consecutively changed ventilation modes.Results indicate that the proposed second-order model does well in predicting particle dispersion and deposition under fixed ventilation mode as well as consecutively changed ventilation modes.Compared with traditional first-order Markov chain model,the proposed high-order model performs with more reasonable accuracy but without significant computing cost increment.The most suitable weight factors of the simulation case in this study are found to be(λ_(1)=0.7,λ_(2)=0.3,λ_(3)=0)for second-order Markov chain model,and(λ_(1)=0.8,λ_(2)=0.1,λ_(3)=0.1)for third-order Markov chain model in terms of reducing errors in particle deposition and escape prediction.With the improvements of the efficiency of state transfer matrix construction and flow field data acquisition/processing,the proposed high-order Markov chain model is expected to provide an alternative choice for fast prediction of indoor airborne particulate(as well as gaseous)pollutants under transient flows. | Xiong Mei Chenni Zeng Guangcai Gong | 2022 | Building Simulation2022，15，7： | 0 |
| 20 | Control of exhaled SARS-CoV-2-laden aerosols in the interpersonal breathing microenvironment in a ventilated room with limited space air stability显示文摘The Coronavirus Disease 2019(COVID-19)highlights the importance of understanding and controlling the spread of the coronavirus between persons.We experimentally and numerically investigated an advanced engineering and environmental method on controlling the transmission of airborne SARS-CoV-2-laden aerosols in the breathing microenvironment between two persons during interactive breathing process by combining the limited space air stability and a ventilation method.Experiments were carried out in a full-scale ventilated room with different limited space air stability conditions,i.e.,stable condition,neutral condition and unstable condition.Two real humans were involved to conducted normal breathing process in the room and the exhaled carbon dioxide was used as the surrogate of infectious airborne SARS-CoV-2-laden aerosols from respiratory activities.A correspondent numerical model was established to visualize the temperature field and contaminated field in the test room.Results show that the performance of a ventilation system on removing infectious airborne SARS-CoV-2-laden aerosols from the interpersonal breathing microenvironment is dependent on the limited space air stability conditions.Appropriate ventilation method should be implemented based on an evaluation of the air condition.It is recommended that total volume ventilation methods are suitable for unstable and neutral conditions and local ventilation methods are preferable for stable conditions.This study provides an insight into the transmission of airborne SARS-CoV-2-laden aerosols between persons in ventilated rooms with different limited space air stability conditions.Useful guidance has been provided to cope with COVID-19 in limited spaces. | Xiaorui Deng Guangcai Gong Xizhi He Xing Shi Lan Mo | 2021 | Journal of Environmental Sciences2021，33，10： | 0 |
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