The Influence of Exciting Vibrational Force on the Performance of ...

Mechanical vibration is used to excite a heat pipe evacuated tube solar collector (HP-ETSC), where two (HP-ETSC''s) are built identically to compare the performance of the solar collector with and ...

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Performance assessment of evacuated U-tube solar collector

2.1 Governing equations. The evacuated tube solar collector is similar to a heat exchanger which absorbs solar energy and transfers it to the working fluid (figure 1).A finite element method based three-dimensional evacuated U-tube solar collector model for both filled and unfilled type are developed based on following assumptions, solid …

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Controlled Vibration System to Enhance the Performance of …

vibration in the Thermosyphon Evacuated Tube Solar Collector. five different vibration frequencies; (21.1, 28.33, 35.55, 42.77, and 50)Hz were applied The experiments were carried at outdoor ...

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Common Causes of Piping Vibration: How to Reduce Pipe Vibration?

Due to the fact that most of the piping design codes (ASME B31.3, B31.1, B31.4, B 31.8, etc.) do not address the vibration issues in a detailed fashion, the damaging effect is normally ignored during the design stage and simple static analysis without attention to vibration is performed on piping systems.. At the same time, the piping vibration …

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Solar Water Heating Systems Applied to High-Rise Buildings

High-rise buildings have a significant impact on the surrounding environment. Building-integrated solar water heating (SWH) systems are effective ways to use renewable energy in buildings. Impediments, such as security concerns, aesthetics and functionality, make it difficult to apply SWH systems in high-rise buildings. At present, …

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An Experimental Comparison of the Performance of …

An experimental study was carried out to assess the thermal performance of a few evacuated tube solar collectors (ETSCs) for water heating. The thermal performance of two kinds of ETSC (heat pipe …

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Controlled Vibration System to Enhance the Performance of Heat pipe …

Mechanical vibration is used to excite a heat pipe evacuated tube solar collector (HP-ETSC), where two (HP-ETSC''s) are built identically to compare the performance of the solar collector with and ...

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Thermal Properties of Solar Collector Comprising Oscillating Heat Pipe …

Solar collectors are very important to the photothermal utilization of solar energy in low-temperature conditions. In this paper, a solar collector comprising an oscillating heat pipe in a flat-plate structure is designed and studied experimentally. The thermal properties are studied in detail, and we finally obtain the startup temperature and the expression of the …

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(PDF) Solar Water Heating Systems Applied to High …

High-rise buildings have a significant impact on the surrounding environment. Building-integrated solar water heating (SWH) systems are effective ways to use renewable energy in buildings.

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Pipeline flow-induced vibration

For a number of vibration mechanisms, the pipe work is identified as having vibration risk and requires more detailed investigation. Flow-induced pulsation, vortex-induced vibration (VIV) from flow past …

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The Influence of Exciting Vibrational Force on the Performance of ...

All results were compared with the reference case study (static case). All tests were done in Iraq during the winter season. It was found based on the obtained results, that the vibration has a influence on the performance of the heat pipe evacuated tube solar collector, especially when applied the vibration force with high frequency.

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OPTIMIZATION OF EVACUATED TUBE COLLECTOR …

Solar high temperatures applications include power generation, air conditioning systems as well as solar industrial heat processes. There are several configurations of evacuate tube collector. The simplest one uses a flat plate ... pipe collectors have been studied and reported before [4-7]. Badar et al. [8] developed an

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(PDF) Effect of PCM Material and vibration on the Performance of ...

PDF | It can be considered that the solar collector is an essential thermal device, and it can be used to utilize solar energy via collecting and... | Find, read and cite all the research you need ...

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A Long-Term Dynamic Analysis of Heat Pumps Coupled to Ground …

In agreement with the decarbonization of the building sector to meet the 2050 climate neutrality targets, borehole thermal storage for solar energy represents a potential solution to increase the energy efficiency of renewable energy plants. As is well known, electricity is not the optimum solution to integrate large inflows of fluctuating …

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Fluid flow and thermal performance of the pulsating heat pipes ...

The daily energy demand in public buildings has been on the rise, partly due to the intensive use of building energy-comfort technologies. Hot water production, space heating and air-conditioning are the major consumers of energy in public buildings; if their energy demand can be addressed holistically through the integration of solar …

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Thermal performance of a heat-pipe evacuated-tube solar collector at ...

The experimental test cases on the solar system have been carried out using three modules of heat pipe evacuated tube collectors connected in series, each consists of 15 tubes as shown in Fig. 5. Fig. 6 shows the different used system components. A 2 kW electric heater and a radiator type heat exchanger equipped with air fan were …

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Performance enhancement of an evacuated tubes solar …

The evacuated tube solar collector is a proper choice for converting solar energy into heat since it is efficient, practical, and cost-effective. In the current study, the role of nanofluid in porous medium …

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Controlled Vibration System to Enhance the Performance of …

performance and efficiency of the Evacuated Tube Heat Pipe Solar Collector. While, the third part is studying the effect of the radius of mass that fixed on the disc which connected with motor to generate the vibration in the Thermosyphon Evacuated Tube Solar Collector. five different vibration frequencies; (21.1, 28.33, 35.55, 42.77, and 50)Hz

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Gas Supplies to High Rise Multi Occupancy Buildings Draft

d. Pipe vibration due to building vibration caused by seismicity (as per seismic-class and spectrum data used in civil engineering design of the building). LOAD CASES The pipeline must be safe under the following load cases. a. Combined Loads Pressure, Self-weight, Building Settlement, Thermal expansion and Pipe displacement with direction +X. b.

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Effect of PCM material and vibration on the performance of …

Chopra et al. (2020) studied the performance improvement of heat pipe evacuated tube solar collectors with SA-67 phase change material and without phase change material in the heat …

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Modeling and Performance Optimization of the U-pipe Glass …

tube solar collectors. Heat pipe type has advantages in certain aspects, such as anti-freezing, rapid start-up, resistance to high pressure, but the accumulated incondensable gas in heat pipe can restrict the normal operation and shorten collector service life (He ZN. et al 1997). Compared with heat pipe evacuated tube collector, using U-pipe ...

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Summary of Research on Supporting Facilities and Structure Vibration …

Summary of Research on Supporting Facilities and Structure Vibration and Noise Reduction of High-Rise Buildings. Rui Jinfeng 1, Wang Lin 2 and Lu Pei 1. ... pipeline systems and other building supporting facilities, as well as the research on the vibration control of building structures. These details reflect the improvement of …

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Analysis of Wind-Induced Vibration Response of High-Rise

Secondly, the actual critical wind speed at the top of the tower for vortex induced resonance of the high-rise structure of the heat absorption tower is 63 m/s, and the most unfavorable wind angle is 75°. In addition, for this kind of high-rise structure of heat absorption tower, the recommended value range of damping ratio is 0.15–1%.

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(PDF) Effect of PCM Material and vibration on the Performance of ...

It can be considered that the solar collector is an essential thermal device, and it can be used to utilize solar energy via collecting and concentrating solar radiation.

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Numerical Analysis of Evacuated Tube Solar Collector with Heat …

In this study, the main objective is to perform an analysis of a thermal resistance network of a solar collector with an evacuated tube heat pipe having an I …

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Pipeline flow-induced vibration

For a number of vibration mechanisms, the pipe work is identified as having vibration risk and requires more detailed investigation. Flow-induced pulsation, vortex-induced vibration (VIV) from flow past intrusive elements (the thermowells) and small bore connections were all identified as limiting at least two of the three operating cases …

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Aeroelastic simulation of the wind-excited torsional vibration of a ...

Parabolic trough solar collectors (PTSCs) continue to be deployed at large scale solar thermal power plants around the world. In order to optimize this technology, accurate estimates of structural wind loads on the collectors are required to balance construction costs with the needs to concentrate the sun''s energy onto the receiver tube …

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(PDF) Wind-Induced Vibration Control of High-Rise

Based on the vibration reduction mechanism of compound damping cables, this study focuses on the wind-induced vibration control of high-rise structures with additional mass at the top.

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Straight-through all-glass evacuated tube solar collector for low …

The new evacuated tube design consists of an inner and outer tube. The both ends of the double glass tubes are sealed together. Fig. 1 shows the structure of the straight-through all-glass evacuated tube, and its specific parameters are shown in Table 1.A high-quality borosilicate glass with a thermal expansion coefficient of (3.3 ± 0.1) × 10 −6 …

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Solar water heating: comprehensive review, critical analysis and …

Estimation of the potential application of a centralized SWHS in high-rise residence. ... Modeling and experimental validation to study the influence of vibration over a flow tube from a solar water heating collector and improve the heat exchange. ... A heat pipe solar collector of 25 glass tubes is designed based on the obtained data of the ...

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CONTROLLABLE VIBRATING SYSTEM TO ENHANCE THE PERFORMANCE OF HEAT PIPE ...

Mechanical vibration is used to excite a heat pipe evacuated tube solar collector (HP-ETSC), where two (HP-ETSC''s) are built identically to compare the performance of the solar collector with and ...

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Thermal Performance Enhancement in Flat Plate Solar Collector Solar ...

Various studies to improve the thermal performance of flat plate solar collector (FPSC) solar water heater have been conducted, and more are currently in progress. This study aims to review existing methods on thermal performance enhancement for FPSC and discuss on heat-transfer enhancement using vibration and its potential …

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Performance analysis on a novel micro‐channel heat pipe …

The exergy analysis method based on the second law of thermodynamics is also introduced to evaluate the performance of this system. The results show that a novel micro-channel heat pipe evacuated tube solar collector-incorporated thermoelectric generation has a high thermal performance with addition of electricity production.

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Numerical Analysis of Evacuated Tube Solar Collector with Heat Pipe …

An improvement in the rate of heat transfer from 530 to 605 KW when introducing an insert into the heat pipe was observed. Interestingly, the solar collector exhibited better results, even on a ...

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Experimental investigation on the thermal performance of heat pipe …

Heat Pipe (HP), as a high efficient heat transfer device with excellent characteristics such as compact structure, ... respectively, giving rise to an increasing maximum temperature of each discharge process ... Theoretical model of an evacuated tube heat pipe solar collector integrated with phase change material. Energy, 91 (2015), ...

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Parabolic Trough Solar Collectors (Ultimate Guide)

The use of parabolic trough solar collectors for water desalination has been gaining attention in recent years due to its potential to provide a low-cost and environmentally friendly desalination process. Parabolic trough solar collectors are also very efficient at converting sunlight into heat.

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Aeroelastic simulation of the wind-excited torsional vibration of a ...

The outermost collectors of a solar field experience the highest wind forces, as the rows in the interior of the solar field are protected from high wind speeds.

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(PDF) The Effect of Vibration Pulses on the Thermal …

An experimental research has been performed to investigate and elicit a heat pipe evacuated tube solar collector (HPET-SC) that subjected to mechanical vibration. The voltage ranges used to...

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Aeroelastic simulation of the wind-excited torsional vibration of a ...

Any small off tracking as well as the collector structure stability will be affected by strong wind blowing for the regions where the wind velocity is high the present study, a two-dimensional ...

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Aeroelastic simulation of the wind-excited torsional vibration of a ...

We investigate the wind-excited torsional vibration of a parabolic trough solar collector using large eddy simulation. Past studies of wind loads on parabolic trough solar collectors have used ...

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Experimental investigation of a solar evacuated tube collector …

The previously mentioned study has been validated experimentally in this section, which will explore the influence of various factors on the performance of a heat pipe-solar evacuated tube collector (SETC HP). The evaporation-condensation coefficient of heat transfer and temperature distribution are the output results to be reported.

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