A Study on the Instruction of Outdoor Air Cooling System for a Computer Room and Its Energy Saving Effect

2020 ◽  
Vol 32 (4) ◽  
pp. 191-203
Author(s):  
JiHyun Hwang ◽  
Taewon Lee
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Air Cooling ◽  
Outdoor Air ◽  
Air Cooling System ◽  
Saving Effect

scholarly journals Outdoor Air-Cooling System for a Computer Room and Its Corresponding Energy-Saving Effect

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5719
Author(s):  
JiHyun Hwang ◽  
Taewon Lee
Keyword(s):  
Power Consumption ◽  
Energy Saving ◽  
Data Centers ◽  
Cooling System ◽  
Stable Operation ◽  
Air Cooling ◽  
Outdoor Air ◽  
Air Conditioners ◽  
Air Cooling System ◽  
Saving Effect

The recent expansion of the internet network and rapid advancements in information and communication technology are expected to lead to a significant increase in power consumption and the number of data centers. However, these data centers consume a considerable amount of electric power all year round, regardless of working days or holidays; thus, energy saving at these facilities has become essential. A disproportionate level of power consumption is concentrated in computer rooms because air conditioners in these rooms are required to operate throughout the year to maintain a constant indoor environment for stable operation of computer equipment with high-heat release densities. Considerable energy-saving potential is expected in such computer rooms, which consume high levels of energy, if an outdoor air-cooling system and air conditioners are installed. These systems can reduce the indoor space temperature by introducing a relatively low outdoor air temperature. Therefore, we studied the energy-saving effect of introducing an outdoor air-cooling system in a computer room with a disorganized arrangement of servers and an inadequate air conditioning system in a research complex in Korea. The findings of this study confirmed that annual energy savings of up to approximately 40% can be achieved.

scholarly journals Roof-integrated radiative air-cooling system to achieve cooler attic for building energy saving

2019 ◽  
Vol 203 ◽  
pp. 109453 ◽  
Author(s):  
Dongliang Zhao ◽  
Ablimit Aili ◽  
Xiaobo Yin ◽  
Gang Tan ◽  
Ronggui Yang
Keyword(s):  
Energy Saving ◽  
Cooling System ◽  
Building Energy ◽  
Air Cooling ◽  
Air Cooling System ◽  
Building Energy Saving

Economic Analysis on the Combined Power/ Refrigerating Cycle for Power Plant Air Cooling System

2012 ◽  
Vol 433-440 ◽  
pp. 7436-7442 ◽  
Author(s):  
Li Jun Chen ◽  
Li Jun Mi ◽  
Chao Xu ◽  
Shan Rang Yang
Keyword(s):  
Economic Analysis ◽  
Energy Saving ◽  
Emission Reduction ◽  
Cooling System ◽  
Combined Cycle ◽  
Air Cooling ◽  
Analog Computation ◽  
Power Cycle ◽  
Air Cooling System ◽  
New Situation

At present, the development of power industry is facing the pressure of energy saving and emission reduction. This paper reviewed briefly the strategy for development in optimizing power cycle and improving comprehensive utilization of heat energy. A economic analysis was made to the combined power cycle/refrigerating cycle air cooling system (hereinafter called ‘combined cycle air cooling system’ or ‘CCACS’) which presented previously and estimated its contribution to energy saving and emission reduction in this paper. An analog computation example shows that the combined cycle air cooling system based on the compression refrigeration is feasible and effective. Finally this paper pointed out that the air-cooling system is facing the re-selection under the new situation, the indirect air-cooling system will be of importance to the development, and the combined cycle air cooling system will become a kind of new options.

scholarly journals Air circulation in a gastrointestinal light source box and endoscope in the era of SARS-CoV-2 and airborne transmission of microorganisms

2021 ◽  
Vol 09 (03) ◽  
pp. E482-E486
Author(s):  
Stanislas Chaussade ◽  
Einas Abou Ali ◽  
Rachel Hallit ◽  
Arthur Belle ◽  
Maximilien Barret ◽  
...  
Keyword(s):  
Light Source ◽  
Cooling System ◽  
Air Cooling ◽  
Airborne Transmission ◽  
Plastic Tube ◽  
Care Workers ◽  
Air Cooling System ◽  
Forced Air ◽  
Air Circulation ◽  
Closed Environment

Abstract Background and study aims The role that air circulation through a gastrointestinal endoscopy system plays in airborne transmission of microorganisms has never been investigated. The aim of this study was to explore the potential risk of transmission and potential improvements in the system. Methods We investigated and described air circulation into gastrointestinal endoscopes from Fujifilm, Olympus, and Pentax. Results The light source box contains a lamp, either Xenon or LED. The temperature of the light is high and is regulated by a forced-air cooling system to maintain a stable temperature in the middle of the box. The air used by the forced-air cooling system is sucked from the closed environment of the patient through an aeration port, located close to the light source and evacuated out of the box by one or two ventilators. No filter exists to avoid dispersion of particles outside the processor box. The light source box also contains an insufflation air pump. The air is sucked from the light source box through one or two holes in the air pump and pushed from the air pump into the air pipe of the endoscope through a plastic tube. Because the air pump does not have a dedicated HEPA filter, transmission of microorganisms cannot be excluded. Conclusions Changes are necessary to prevent airborne transmission. Exclusive use of an external CO2 pump and wrapping the endoscope platform with a plastic film will limit scatter of microorganisms. In the era of pandemic virus with airborne transmission, improvements in gastrointestinal ventilation systems are necessary to avoid contamination of patients and health care workers.

Optimization of fog inlet air cooling system for combined cycle power plants using genetic algorithm

2015 ◽  
Vol 76 ◽  
pp. 449-461 ◽  
Author(s):  
Mehdi A. Ehyaei ◽  
Mojtaba Tahani ◽  
Pouria Ahmadi ◽  
Mohammad Esfandiari
Keyword(s):  
Genetic Algorithm ◽  
Power Plants ◽  
Cooling System ◽  
Combined Cycle ◽  
Air Cooling ◽  
Air Cooling System

Qassim Central Power Plant Inlet Air Cooling System

2001 ◽  
Author(s):  
A. Al Bassam ◽  
Y. M. Al Said
Keyword(s):  
Saudi Arabia ◽  
Power Plant ◽  
Cooling System ◽  
Flow Diagram ◽  
Air Cooling ◽  
Process Flow Diagram ◽  
Electric Company ◽  
Start Up ◽  
Air Cooling System ◽  
And Performance

This paper summarizes the experiences with the first gas turbine inlet air cooling project in Saudi Arabia. It will cover the feasibility study, cooling system options, overview, system equipment description, process flow diagram, construction, commissioning, start-up and performance of the project which is currently under commissioning and initial start up at Qassim Central Power Plant (QCPP) owned by Saudi Electric Company (S.E.C.) Central Region Branch.

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