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Chong Shen
Department of Building Science, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Tsinghua University, Beijing, PR China

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Journal article
Published: 04 October 2018 in Building and Environment
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The air distribution in displacement ventilation (DV) mainly depends on the heat sources in the room. The solar radiation and cold window are strong heat source or heat sink in summer and winter. A pipe-embedded window (PEW) has been developed to address the heat gain/loss through the window. In this study, the performance of the system based on DV and radiant ceiling was compared with that based on DV and PEW. A room with two workstations and two thermal manikins was adopted in the experiment. The impact of human bioeffluents and passive contaminant sources were studied. The results show that the warm window and floor in summer and cold window in winter damaged the normal air distribution of DV. The vertical temperature gradient was weakened and the ventilation effectiveness was close to that of mixing ventilation. The normalized contamination concentration was almost 1 in both workstations in different conditions. On the contrary, the PEW was able to keep the nature of DV and eliminate the negative effect from window. The bioeffluents and heat was efficiently removed by the DV flow. The exhaust air temperature in PEW system was higher in summer and lower in winter compared with radiant ceiling system.

ACS Style

Gonghang Zheng; Chong Shen; Arsen Melikov; Xianting Li. Improved performance of displacement ventilation by a pipe-embedded window. Building and Environment 2018, 147, 1 -10.

AMA Style

Gonghang Zheng, Chong Shen, Arsen Melikov, Xianting Li. Improved performance of displacement ventilation by a pipe-embedded window. Building and Environment. 2018; 147 ():1-10.

Chicago/Turabian Style

Gonghang Zheng; Chong Shen; Arsen Melikov; Xianting Li. 2018. "Improved performance of displacement ventilation by a pipe-embedded window." Building and Environment 147, no. : 1-10.

Journal article
Published: 01 January 2018 in Journal of Building Engineering
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ACS Style

Weihua Lv; Chong Shen; Xianting Li. Energy efficiency of an air conditioning system coupled with a pipe-embedded wall and mechanical ventilation. Journal of Building Engineering 2018, 15, 229 -235.

AMA Style

Weihua Lv, Chong Shen, Xianting Li. Energy efficiency of an air conditioning system coupled with a pipe-embedded wall and mechanical ventilation. Journal of Building Engineering. 2018; 15 ():229-235.

Chicago/Turabian Style

Weihua Lv; Chong Shen; Xianting Li. 2018. "Energy efficiency of an air conditioning system coupled with a pipe-embedded wall and mechanical ventilation." Journal of Building Engineering 15, no. : 229-235.

Journal article
Published: 01 October 2017 in Energy Conversion and Management
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ACS Style

Chong Shen; Xianting Li; Shuai Yan. Numerical study on energy efficiency and economy of a pipe-embedded glass envelope directly utilizing ground-source water for heating in diverse climates. Energy Conversion and Management 2017, 150, 878 -889.

AMA Style

Chong Shen, Xianting Li, Shuai Yan. Numerical study on energy efficiency and economy of a pipe-embedded glass envelope directly utilizing ground-source water for heating in diverse climates. Energy Conversion and Management. 2017; 150 ():878-889.

Chicago/Turabian Style

Chong Shen; Xianting Li; Shuai Yan. 2017. "Numerical study on energy efficiency and economy of a pipe-embedded glass envelope directly utilizing ground-source water for heating in diverse climates." Energy Conversion and Management 150, no. : 878-889.

Journal article
Published: 15 March 2017 in Energies
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Generally, Central Asia is typical for regions with strong solar radiation and various natural cooling sources. The heat gain from the building envelope accounts for a large part of the cooling load there. Thus, the pipe-embedded envelope is receiving attention as a semi-active system of utilizing natural energy for cooling. In this study, the performance of the pipe-embedded envelope used in Urumqi is numerically investigated. The energy saving potential regarding evaporative cooling and a ground-source heat exchanger (GSHE) is evaluated over a complete summer. The results show that the built-in pipes can reduce 80% of the solar heat gain through windows, with an effectiveness of around 60%. External windows rather than internal windows should be insulated because the air cavity is cool. With respect to the pipe-embedded wall, it becomes a radiant cooling panel absorbing the heat from the room, with an effectiveness around 83%. The seasonal cooling energy is decreased by 25%–50% in a typical office with a pipe-embedded envelope. Offices with a large window-to-wall ratio are acceptable because natural cooling is employed. GSHE performs the best among the selected sources. The effectiveness of evaporative cooling is also satisfactory, with an energy saving rate of 27%. Overall, the pipe-embedded system is suitable for climatic regions like Urumqi.

ACS Style

Chong Shen; Xianting Li. Potential of Utilizing Different Natural Cooling Sources to Reduce the Building Cooling Load and Cooling Energy Consumption: A Case Study in Urumqi. Energies 2017, 10, 366 .

AMA Style

Chong Shen, Xianting Li. Potential of Utilizing Different Natural Cooling Sources to Reduce the Building Cooling Load and Cooling Energy Consumption: A Case Study in Urumqi. Energies. 2017; 10 (3):366.

Chicago/Turabian Style

Chong Shen; Xianting Li. 2017. "Potential of Utilizing Different Natural Cooling Sources to Reduce the Building Cooling Load and Cooling Energy Consumption: A Case Study in Urumqi." Energies 10, no. 3: 366.

Journal article
Published: 01 March 2017 in Energy and Buildings
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ACS Style

Chong Shen; Xianting Li. Energy saving potential of pipe-embedded building envelope utilizing low-temperature hot water in the heating season. Energy and Buildings 2017, 138, 318 -331.

AMA Style

Chong Shen, Xianting Li. Energy saving potential of pipe-embedded building envelope utilizing low-temperature hot water in the heating season. Energy and Buildings. 2017; 138 ():318-331.

Chicago/Turabian Style

Chong Shen; Xianting Li. 2017. "Energy saving potential of pipe-embedded building envelope utilizing low-temperature hot water in the heating season." Energy and Buildings 138, no. : 318-331.

Journal article
Published: 01 February 2017 in Energy
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ACS Style

Chong Shen; Maoyong Zhang; Xianting Li. Experimental investigation on the thermal performance of cooling pipes embedded in a graphitization furnace. Energy 2017, 121, 55 -65.

AMA Style

Chong Shen, Maoyong Zhang, Xianting Li. Experimental investigation on the thermal performance of cooling pipes embedded in a graphitization furnace. Energy. 2017; 121 ():55-65.

Chicago/Turabian Style

Chong Shen; Maoyong Zhang; Xianting Li. 2017. "Experimental investigation on the thermal performance of cooling pipes embedded in a graphitization furnace." Energy 121, no. : 55-65.

Journal article
Published: 01 August 2016 in Applied Thermal Engineering
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ACS Style

Chong Shen; Xianting Li. Dynamic thermal performance of pipe-embedded building envelope utilizing evaporative cooling water in the cooling season. Applied Thermal Engineering 2016, 106, 1103 -1113.

AMA Style

Chong Shen, Xianting Li. Dynamic thermal performance of pipe-embedded building envelope utilizing evaporative cooling water in the cooling season. Applied Thermal Engineering. 2016; 106 ():1103-1113.

Chicago/Turabian Style

Chong Shen; Xianting Li. 2016. "Dynamic thermal performance of pipe-embedded building envelope utilizing evaporative cooling water in the cooling season." Applied Thermal Engineering 106, no. : 1103-1113.