A Review on Solar Cooling Technologies

Mathur, Divik

doi:10.34218/ijmet.11.5.2020.002

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…Thin-walled tubes are normally used as energy absorbers in sacrificial mode, to absorb the energy during a frontal accident/collision/impact Tuljapure, S et al (2). The schematic of the same is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Pre-Tensioned CFRP Tubes for Improved Energy Absorption

Gattiineni¹,

Nathi²

2022

ECS Trans.

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The use of materials like CFRP has shot into prominence to achieve lightweight designs without compromising on structural integrity. Circular thin tubes are often employed in passenger cars as energy absorbers to absorb the impact energy during an accident. When such tubes are made of materials like CFRP it contributes to weight reduction besides leading to reduced fuel consumption. Also due to their lower weight, such tubes shall be capable of absorbing more energy per unit mass compared to metallic designs, which is defined as specific energy absorption capacity (SEA). Pre-stressing techniques are widely used by civil engineers across the globe to impart more stress/energy bearing capacity for the structures. Based on pre-stressing principles, the introduction of pre-tension during the fabrication stage for thin CFRP tubular structures has been experimentally studied to validate the applicability of pre-stress concepts for more SEA. The study investigates experimentally the additional advantage prestressing can bring for a CFRP tube in terms of SEA improvement.

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Section: Introductionmentioning

confidence: 99%

Pre-Tensioned CFRP Tubes for Improved Energy Absorption

Gattiineni¹,

Nathi²

2022

ECS Trans.

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“…Non-functional parameters play a very important role in service-based computing because these parameters will always be monitored and evaluated regularly to ensure the performance of the services provided [25]. Each service will have different parameters, depending on the application or data stored [26].…”

Section: Introductionmentioning

confidence: 99%

Towards Service Level Agreement Quantification on Service-Based Computing

Paputungan

Denna

Rachmawati

2022

Jurnal Ilmiah Teknik Elektro Komputer Dan Informatika

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A service Level Agreement is an agreement between service providers and consumers that contains the rights and obligations of both parties, particularly in terms of the delivery of services provided during the subscription period on service-based computing. Once approved, normally, the Service Level Agreement will not change until the end of the subscription period. SLA violations are often positioned between yes and no. As a result, service providers must deal with severe penalties or compensation. In this paper, the use of weightage for each SLA parameter is introduced in this paper. Such quantification using weightage is the main contribution. SLA violation detection cases in service-based computing are used to demonstrate how SLA quantification works. In the simulation scenario of SLA quantification, the presence of weightage and its aggregates along with the upper and lower bound is able to help the SLA violation detection process more appropriate. Violations are no longer seen between Yes and No, but the severity of the violation can also be determined. The number of violated parameters is not very influential in determining the level because the main determinant is the weightage. At the same time, the upper and lower limits are also very helpful in determining the level of violation. It is believed that SLA quantification is the way forward for better SLA management.

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“…In recent years, different medium and high temperature solar thermal systems applied to cooling and/or air conditioning have been developed (Al-Alili et al, 2014; Tashtoush & Nayfeh, 2020). Commonly the solar air conditioning systems (by absorption or adsorption) have been coupled with a solar plant that is responsible for capturing and storing thermal energy and then transferring it to the thermodynamic cooling system (Braun et al, 2020;Mathur, 2020) There are various types of solar collectors, however, the use of medium temperature absorption systems has preferred the use of parabolic trough collectors (Siddiqui & Said, 2015). These concentrators use a heating fluid, which flows through a receiving tube, increasing the temperature of the fluid to achieve the thermal level required by the thermodynamic cycle and can reach up to 400°C.…”

Section: Introductionmentioning

confidence: 99%

Parametric Identification Method for an Absorption Air Conditioning Parabolic Trough Collector Solar Plant

Salgado¹,

López²,

Luna³

et al. 2020

IJBAS

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In this work is established a parametric identification method for an absorption air conditioning solar plant. A scaled thermal plant, consisting of a thermal capacitor and a flow line that acts as a capacitor and thermal energy radiator is used. As the mathematical model of the scaled plant is structurally identical to that of the solar plant the first is used to determine the methodology that can be used later for the identification of the PTC solar plant. Parametric identification is a necessary step that allows to determine the unknown parameters of the mathematical model of any solar/thermal plant. This model then can be used to analyze the plant characteristics and design an appropriate control algorithm. Although the system model is nonlinear it can be expressed in the form of a linear regressor in the parameters. This permits to use the least squares method as the identification method. The method is applied to the thermal plant to identify the useful form that the covariance matrix and excitation signals should have to ensure that when applied to the solar plant its unknown parameters can be properly estimated. Once the solar plant parameters are properly estimated model can be used to analyze and simulate the operation of the absorption air conditioning system.

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A Review on Solar Cooling Technologies

Cited by 4 publications

References 12 publications

Pre-Tensioned CFRP Tubes for Improved Energy Absorption

Pre-Tensioned CFRP Tubes for Improved Energy Absorption

Towards Service Level Agreement Quantification on Service-Based Computing

Parametric Identification Method for an Absorption Air Conditioning Parabolic Trough Collector Solar Plant

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