scholarly journals Investigation on the Energy Saving Potential of Using a Novel Dew Point Cooling System in Data Centres

Energies ◽  
2017 ◽  
Vol 10 (11) ◽  
pp. 1732 ◽  
Author(s):  
Yin Bi ◽  
Yugang Wang ◽  
Xiaoli Ma ◽  
Xudong Zhao
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Dew Point ◽  
Energy Saving Potential ◽  
Data Centres

scholarly journals Evaluating the Energy-Saving Potential of Solar Dedicated Ventilation Systems Based on ADRC

2018 ◽  
Vol 8 (11) ◽  
pp. 2328 ◽  
Author(s):  
Lian Zhang ◽  
Zijian Chen ◽  
Lijuan Wang
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Ventilation System ◽  
Gain Control ◽  
Energy Saving Potential ◽  
Active Disturbance Rejection ◽  
Actual Operation ◽  
Temperature Standard ◽  
Control Accuracy ◽  
Ventilation Systems

A solar dedicated ventilation system based on active disturbance rejection controller (ADRC) has been designed in this study and tested by experimental research to acquire better control accuracy and energy-saving potential compared with former systems. This system involves photovoltaic, solar thermal, and dedicated ventilation systems and ADRC. The solar energy replaces traditional energy to realize energy-saving potential, and ADRC takes the place of a conventional controller to gain control accuracy. The experimental results show that the temperature standard deviation is from 0.09 to 0.15 °C and difference between maximum and minimum is 0.33 to 0.49 °C (<0.5 °C) at different outdoor conditions to meet accurate control requirements. The results also show the energy-saving potential of the solar dedicated ventilation system as being equal to the power consumption of traditional systems, not including extreme situations. The solar dedicated ventilation system was used for actual operation of the cooling system of a laboratory precisely and efficiently. Consequently, the solar dedicated ventilation system based on ADRC is most suitable for hot and humid places to achieve the energy-saving objective.

Study on Energy Saving Potential of Radiant Cooling System in China

2012 ◽  
Vol 433-440 ◽  
pp. 1458-1464
Author(s):  
Xing Lei Yin ◽  
Zhe Tian ◽  
Kui Xing Liu ◽  
Feng Li
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Operation Time ◽  
Combined System ◽  
Climate Conditions ◽  
Energy Saving Potential ◽  
Outdoor Climate ◽  
Radiant Cooling ◽  
Air System ◽  
Saving Effect

Combined system of radiant cooling and dedicated outdoor air system (DOAS) has advantage in energy-saving and thermal comfort. In order to investigate the energy saving potential of the system under different climate conditions in China, Tianjin, Shanghai, Guangzhou, Chengdu and Xi’an were selected, where summer energy consumption of the combined system and fan coil + fresh air system in reference building was calculated with BIN method respectively. The results show that radiant cooling system has better performance in energy saving than fan coil system by saving of 12-16%. The system operation time and outdoor climate are main factors influencing energy saving effect.

scholarly journals Energy-saving potential of dedicated outdoor-air system assisted by vacuum-based membrane dehumidifier

2019 ◽  
Vol 111 ◽  
pp. 01087 ◽  
Author(s):  
Seong-Yong Cheon ◽  
Soo-Yeol Yoon ◽  
Su Liu ◽  
Jae-Weon Jeong
Keyword(s):  
Energy Saving ◽  
Primary Objective ◽  
Dew Point ◽  
Outdoor Air ◽  
Variable Air Volume ◽  
Energy Saving Potential ◽  
Air Volume ◽  
Air Supply ◽  
Radiant Cooling ◽  
Air System

The proposed research presents a dedicated outdoor-air system (DOAS) integrated with a vacuumbased membrane dehumidifier (VMD). The primary objective of this study was to evaluate the energy-saving potential of the proposed VMD–DOAS combination. VMD–DOAS comprised a membrane-energy exchanger (MEE), dew-point indirect evaporative cooler (DP-IEC), and VMD. VMD possessed a characteristic by virtue of which the dehumidification process was isothermal; i.e., no temperature change was observed during the VMD process. While VMD served to control the dry-air supply, the required target temperature (i.e., 17 °C) was maintained via DP-IEC operation. The remaining sensible heat of the conditioned zone was controlled by the ceiling radiant cooling panel (CRCP). The load of the conditioned zone was driven by TRANSYS 18, and an engineering equation solver (EES) was used for evaluating the energy-saving potential of the proposed system with CRCP by comparing it against the variable-air-volume (VAV) system. Results of this study demonstrated that the proposed DOAS with CRCP consumed 37% less operating energy compared to the VAV system. This observed energy-saving potential of the proposed system was driven by reducing the dehumidification load and subsequent energy recovery by MEE.

Energy saving potential of a fresh air pre-cooling system using radiative sky cooling

2021 ◽  
Author(s):  
Dikai Xu ◽  
Sébastien Boncoeur ◽  
Gang Tan ◽  
Jingtao Xu ◽  
Hua Qian ◽  
...  
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Energy Saving Potential
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