Cooling panel optimization for the active cooling system of a hypersonic aircraft

10.2514/3.639 ◽  
1995 ◽  
Vol 9 (1) ◽  
pp. 136-143 ◽  
Author(s):  
B. Youn ◽  
A. F. Mills
Keyword(s):  
Cooling System ◽  
Active Cooling ◽  
Hypersonic Aircraft

scholarly journals Active cooling photovoltaic with IoT facility

2021 ◽  
Vol 12 (3) ◽  
pp. 1494
Author(s):  
Muhammad Nizam Kamarudin ◽  
Sahazati Md. Rozali ◽  
Mohd Saifuzam Jamri
Keyword(s):  
Real Time ◽  
Cooling System ◽  
Solar Panel ◽  
State Of Charge ◽  
Photovoltaic System ◽  
Passive Cooling ◽  
Active Cooling ◽  
Passive Cooling System ◽  
Pv Power Generation ◽  
Sunlight Intensity

Harvesting energy from the sun makes the photovoltaic (PV) power generation a promising technology. To obtain a consistent state of charge (SOC), consistent energy must be harvested and efficiently directed to the battery. Overcharging or undercharging phenomena decreases the lifetime of the battery. Besides, the effect of irradiance toward solar in term of sunlight intensity effects the efficiency and hence, sluggish the SOC. The main problem of the solar panel revealed when the temperature has increased, the efficiency of solar panel will also be decreased. This manuscript reports the finding of developing an automatic active cooling system for a solar panel with a real time energy monitoring system with internet-of-things (IoT) facility. The IoT technology assists user to measure the efficiency of the solar panel and SOC of the battery in real time from any locations. The automatic active cooling system is designed to improve the efficiency of the solar panel. The effectiveness of the proposed system is proven via the analysis of the effect of active cooling toward efficiency and SOC of photovoltaic system. The results also tabulate the comparative studies of active-to-passive cooling system, as well as the effect of cooling towards SOC and efficiency of the solar panel.

Active cooling system for downhole electronics in high temperature environments

2021 ◽  
pp. 1-16
Author(s):  
Wei Minghui ◽  
Cai Wei ◽  
Xu Mingze ◽  
Deng Shuang
Keyword(s):  
High Temperature ◽  
Cooling System ◽  
Capillary Tube ◽  
Thermal Characteristics ◽  
Electric Circuit ◽  
Passive Cooling ◽  
Electronic Components ◽  
Active Cooling ◽  
Temperature Environment ◽  
High Temperature Environment

Abstract Downhole high temperature environment is an important factor affecting the performance of downhole instrument electronic system.At present, various active cooling technologies and passive cooling technologies have been proposed to reduce the temperature of downhole electric circuit system.However, passive cooling technologies can only provide limited cooling capacity for drilling tools under high temperature environment, and the duration of cooling is short, which can not meet the long-time drilling task.This paper presents an Active cooling system(ACS)for downhole electronics and the effects of different temperatures on the performance of electronic components are analyzed.The ACS mainly includes a micro supercharger, condenser tube, evaporation pipe, capillary tube and refrigerant.The theoretical analysis of heat transfer and refrigerant capacity in high temperature environment is carried out.The thermal characteristics of the ACS is evaluated experimentally.The results show that the temperature of electronic components can be reduced to below 163°C in the 200°C downhole environment and components.The geomagnetic field data measured by electronic components at room temperature, 200 °C and with ACS are compared.The results show that ACS can keep electronic components working normally.

Integrated Pump Assembly - An Active Cooling System for Mars Pathfinder Thermal Control

1996 ◽  
Author(s):  
Gajanana C. Birur ◽  
Pradeep Bhandari ◽  
Marshall B. Gram ◽  
John Durkee
Keyword(s):  
Cooling System ◽  
Thermal Control ◽  
Active Cooling ◽  
Mars Pathfinder ◽  
Pump Assembly

scholarly journals Improvement of Endothermic Characteristics with Catalyst Molding in Hypersonic Aircraft Cooling System

2017 ◽  
Vol 21 (3) ◽  
pp. 56-60 ◽  
Author(s):  
Dong Hun Hyeon ◽  
Tae Ho Lee ◽  
Sung Hyun Kim ◽  
Byung Hun Jeong ◽  
Jeong Sik Han
Keyword(s):  
Cooling System ◽  
Hypersonic Aircraft

scholarly journals Analysis and Fabrication of an Active Cooling System for Reducing Photovoltaic Module Temperature

2017 ◽  
Vol 7 (5) ◽  
pp. 1980-1986
Author(s):  
A. Q. Jakhrani ◽  
A. R. Jatoi ◽  
S. H. Jakhrani
Keyword(s):  
Wind Speed ◽  
Flow Rate ◽  
Cooling System ◽  
Performance Comparison ◽  
Heat Extraction ◽  
Photovoltaic Module ◽  
Climatic Parameters ◽  
Photovoltaic Modules ◽  
Active Cooling ◽  
Pv Module

The purpose of this study is to fabricate and analyze an active cooling system for reducing photovoltaic (PV) module temperature and increasing its efficiency. An active cooling system was devised to cool the PV module. Two modules of same specifications were used for this study. One module was cooled, and other was left un-cooled for performance comparison. Solar radiations, wind speed, ambient temperature and temperatures at different points of the fabricated system were measured. The modules were mounted on a frame facing true south at the inclination of the latitude of the location. The measurements were taken during daytime with one hour intervals for two weeks. The temperatures at various points on cooled and un-cooled photovoltaic modules were noted using two different flow rates with 1 lit/min and 2 lit/min. It was discovered that the efficiency of PV module was enhanced from 6% to 7% during study period. The flow rate of 1lit/min was found more feasible for heat extraction as compared to the flow rate of 2lit/min. The wind speed was found to be more helpful for heat extraction from the modules as compared to other climatic parameters.

Improving the viability and versatility of the E × B probe with an active cooling system

2018 ◽  
Vol 89 (4) ◽  
pp. 043502 ◽  
Author(s):  
Lihui Liu ◽  
Guobiao Cai ◽  
Fengyi You ◽  
Xiang Ren ◽  
Hongru Zheng ◽  
...  
Keyword(s):  
Cooling System ◽  
Active Cooling
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