Thermal design of the Electronic Equipment Enclosures with Natural Air Cooling

Shilo, Galina; Ogrenich, Evgen; Kulyaba-Kharitonova, Tatyana; Buhaiev, Oleh

doi:10.1109/acitt.2019.8780110

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Important, reliability-impacting issues that should be taken into account within the FAS operating process are electromagnetic interference [27,45], maximum permissible temperature changes in building rooms with installed detectors [46,47], as well as changes to accelerations, vibrations and shocks in electronic elements [48,49]. In the case of the studies discussed above, individual factors disturbing the FAS operation process were always considered separately.…”

Section: Literature Reviewmentioning

confidence: 99%

Assessing the Operation System of Fire Alarm Systems for Detection Line and Circuit Devices with Various Damage Intensities

et al. 2022

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The paper presents a method for assessing operation processes for Fire Alarm Systems (FAS) applied in civil structures, based on use analysis. Individual FAS devices include components with varying ‘lifetimes’ and damage intensities λ. This is because these elements are operated in different internal and external environments. Probability distributions with various damage λ and recovery µ intensity values must, hence, be taken into account for the FAS operation process and to determine the R(t) reliability. The life cycle of elements comprising a FAS can be divided into three distinguishing time periods. The first is the so-called ‘childhood’. The second, the longest, is characterized by damage intensity λ = const, and the third period is where FAS is unfit more frequently. Based on knowledge of actual FAS operation process data, it is possible to determine damage λ and recovery µ intensity parameters. Such data can be employed to determine FAS reliability parameters within the presented service life intervals. The authors of the article first discuss the basic issues associated with FAS, followed by analyzing the current status of the topic. They also present power supply matters and system solution examples, develop an operation process model and determine selected operational indicators for the structures in question. The paper ends with conclusions.

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Section: Literature Reviewmentioning

confidence: 99%

Assessing the Operation System of Fire Alarm Systems for Detection Line and Circuit Devices with Various Damage Intensities

et al. 2022

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“…Owing to the size reduction of PEDs and the growth of switching frequency, electronic equipment has become deeply integrated and dense in power. This is accompanied by the prominence of thermal failure and thermal degradation [4][5][6]. The thermal design of PED-containing electronic equipment requires theoretical knowledge of multiple disciplines, namely, electronics, heat transfer, mechanics, and fluid mechanics, and calls for overall consideration of the unique features in the cooling of closed equipment, which is characterized by heat concentration, a small radiating surface, and a high heat flux [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal Design and Cooling Performance Evaluation of Electronic Equipment Containing Power Electronic Devices

Zheng-de¹

2021

IJHT

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In electronic equipment, thermal failure and thermal degradation are two increasingly prominent problems of the devices, with the deepening integration and growing power density. Currently, there are relatively few reports on the heat transfer mechanism, heat source analysis, and numerical simulation of electronic equipment containing power electronic devices (PEDs). Therefore, this paper carries out thermal design and evaluates the cooling performance of PED-containing electronic equipment. Firstly, the basic flow was given for the thermal design of PED-containing electronic equipment; the heat transfer mode of PEDs and the equipment were detailed, so was the principle of thermal design; the cooling principles were introduced for ventilation cooling, heat pipe cooling, and closed loop cooling. Then, numerical simulation was carried out on the solid and liquid state heat transfer of PEDs and the equipment under different cooling modes. Based on an engineering example, the cooling scheme was finalized through heat source analysis on the proposed electronic equipment. The experimental results rove the effectiveness of numerical simulation and electronic equipment cooling scheme. The results provide a reference for the cooling scheme design for other fields of thermal design.

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The Impact of Temperature of the Tripping Thresholds of Intrusion Detection System Detection Circuits

2021

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This research paper discusses issues regarding the impact of temperature on the tripping thresholds of intrusion detection system detection circuits. The objective of conducted studies was the verification of a hypothesis assuming that the variability of an intrusion detection system’s (considered as a whole) operating environment temperature can impact the electrical parameters of its detection circuits significantly enough so that it enables a change in the interpretation of the state observed within a given circuit fragment from the state of “no circuit violation” to “circuit violation”. The research covered an intrusion detection system placed in a climatic chamber with adjusted temperature (−25.1 ÷ +60.0 [°C]). The analysis of the obtained results enabled determining the relationships that allow selecting detection circuit resistor values. It is important since it increases the safety level of protected facilities through proper resistor selection, thus, correct interpretation of a detection circuit state.

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Thermal design of the Electronic Equipment Enclosures with Natural Air Cooling

Cited by 3 publications

References 2 publications

Assessing the Operation System of Fire Alarm Systems for Detection Line and Circuit Devices with Various Damage Intensities

Assessing the Operation System of Fire Alarm Systems for Detection Line and Circuit Devices with Various Damage Intensities

Thermal Design and Cooling Performance Evaluation of Electronic Equipment Containing Power Electronic Devices

The Impact of Temperature of the Tripping Thresholds of Intrusion Detection System Detection Circuits

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