Theoretical modelling approaches of heat pipe solar collectors in
The theoretical model involves three processes which are (i) the conversion of solar energy into thermal energy using absorber surface, (ii) transportation of the absorbed
Experimental Investigation of an Evacuated Tube Heat Pipe Solar
TRNSYS simulation model for the forced flow of the heat transfer fluid in solar water heating systems with either flat plate or heat pipe evacuated tube collectors was created by Ayompe et al. [5]. fluid inside thermosyphon heat pipe solar collector. Experiments for
Modeling and Simulation of the Solar Collector Using Different
This paper presents numerical and experimental investigation of a flat-plate solar collector. Fluid flow and heat transfer in the collector panel are studied by means of
Numerical simulation investigation on thermal performance of
The thermal performance of an individual pipe in an evacuated tube solar collector with a heat pipe is investigated by an analytical method based on the energy balance
Multi-thermal performance optimization of semi-circular heat pipes
Solar collector (SC) technology has proved promising applications in heating, desalination, refrigeration of water, etc. Thermal performance (TP) of Heat Pipe (HP) improves by combining the various profiled absorber plate with a flat-plate collector. The objective is to study HP attributes'' effect (heat inputs, pipe inclinations, and mass flow rates of water) with various
CFD modeling of a thermal energy storage based heat pipe evacuated
The thermal efficiency (η s) of such a system is defined as the ratio of heat transfer rate (q ˙) over the product of collector gross area (A c) and the total global solar radiation (G t) on the surface of the collectors [28].The results from experimental work showed an efficiency improvement of 26% for the normal operation and 66% for the stagnation mode compared to
Simulation of the Thermal Behaviour of a Hybrid Heat Pipe Solar Collector
SET 2002 1st International Conference on Sustainable Energy Technologies 12-14 June 2002, Porto, Portugal paper REN6 SIMULATION OF THE THERMAL BEHAVIOUR OF A HYBRID HEAT PIPE SOLAR COLLECTOR Jorge Facão and Armando C. Oliveira Faculty of Engineering, University of Porto Dept. Mechanical Engineering and Industrial Management Rua Dr. Roberto
Numerical Analysis of Evacuated Tube Solar Collector with Heat Pipe
The heat transfer in a typical evacuated tube heat pipe solar collector describing the heat flux from the sun, the different losses by conduction, The evacuated tube with the entire components and a solar simulator was mounted into a mobile structure. Inside the 4-L water tank, the condenser side of the gravity-assisted heat pipe was fitted.
Study on the Performance of a Heat Pipe for Solar Collectors
Abstract: This paper presents the construction of a heat pipe for a solar collectors. Using finite element simulation, the internal temperature distribution of the heat pipe and its affecting elements are investigated. The following were obtained from the simulation: the thermal resistance of the heat pipe, the operating temperature, and the flow rate of the work mass under different
Intelligent modelling (NARX) of evacuated tube heat pipe solar collectors
A nonlinear interface identification simulation for the temperature of the Evacuated Tube - Heat Pipe Solar Collector (ETHPSC) was included in this work. To col
Numerical simulation investigation on thermal performance of heat pipe
DOI: 10.1016/J.APPLTHERMALENG.2017.02.089 Corpus ID: 114238623; Numerical simulation investigation on thermal performance of heat pipe flat-plate solar collector @article{Zhang2017NumericalSI, title={Numerical simulation investigation on thermal performance of heat pipe flat-plate solar collector}, author={Dongwei Zhang and Han-Zhong
Heat pipe collectors | isfh
The collector efficiency is comparable to commercial technologies. The use of heat pipe collectors with temperature limitation simplifies the system design and reduces the effort for installation and maintenance. For typical solar thermal
Simulation of a Solar Collector Array Consisting of two Types of Solar
As the flow rate and the inlet temperature used in the TRNSYS model were the measured ones, the difference was caused by the different outlet temperature at the end of the return pipe, before the solar collector fluid entered the heat exchanger. The comparison between measured and simulated return temperatures is shown in Fig. 4.
CFD modeling of a thermal energy storage based heat pipe
The application of solar collectors in water heating systems has attracted attention in recent years, however, due to the inconsistency of solar radiation, performance of such systems will
Performance studies of novel all-glass heat pipe evacuated collector
Request PDF | On Mar 1, 2023, Jing-hu Gong and others published Performance studies of novel all-glass heat pipe evacuated collector tube integrating numerical simulation and experiment method
Parametric study of photovoltaic/thermal wickless heat pipe solar collector
In China, the use and testing of heat pipes in a PV solar collector has been undertaken. Based upon the idea that wicked heat pipes and a PVT flat-plate collector are integrated into a single unit, the heat pipe PVT (HP-PVT) collector system experimental rig was designed and developed by Pei et al. [12], [13]. They found that HP-PVT collectors
Numerical simulation investigation on thermal performance of
The operation and geometric parameters, including the solar radiation intensity, the diameter of the heat pipe, the length of evaporation, the thickness of absorber plate and
Computational Fluid Dynamics Modeling of a Heat
This paper reports an experimental investigation on a design of solar water heater system (SWH) employing evacuated tube heat pipe solar collectors (HPSCs) and a latent heat storage (LHS) tank.
Simulation of Hybrid Photovoltaic Solar
A hybrid photovoltaic solar assisted loop heat pipe/heat pump (PV-SALHP/HP) water heater system has been developed and numerically studied. The system is the combination of loop
Theoretical and experimental analysis of thermal performance of a solar
An ETSWH with various samples of CLPHP was tested using a solar simulator (Indoor) that followed the EN 12975-2 standard. A novel heat pipe vacuum tube solar collector has been developed and
Forced-circulation solar water heating system using
International Journal of Energy and Power Engineering, 2015. The thermal performance of a solar water heating with 1.00 m2 flat plate collectors in Cascavel-PR, is which presented in this article, paper presents the solution to
Mathematics Modelling and Performance Analysis of the Heat
radiation efficiently. Therefore, an evacuated tube solar collector is the most efficient solar thermal collector [6]. There are several types of solar collectors, such as U-tube type, flat-plate type, and heat pipe type. The heat pipe evacuated tubular solar collectors have unique characteristics such
(PDF) Evacuated tubes solar air collectors:
heat pipe solar collectors in solar sy stems: A . 4.2 Simulation works for air heating . For air heating applications, Iranmanesh et al. [84] examined the
Study on the Performance of a Heat Pipe for Solar Collectors
This paper presents the construction of a heat pipe for a solar collectors. Using finite element simulation, the internal temperature distribution of the heat pipe and its affecting elements are
Numerical simulation investigation on thermal performance of heat pipe
The operation and geometric parameters, including the solar radiation intensity, the diameter of the heat pipe, the length of evaporation, the thickness of absorber plate and the inclination angle are investigated on the useful heat gain of water and the instantaneous efficiency of the collector, which can be helpful to optimize the design parameters of the heat pipe flat
Simulation of the Thermal Behaviour of a Hybrid Heat Pipe Solar
In this work, energy and exergy analysis of a flat plate solar collector with a heat pipe is conducted theoretically. Next, the exergy efficiency of pulsating heat pipe flat plate solar collectors
CFD simulation of a heat pipe using the homogeneous model
In order to reduce the costs per MWh of solar heat, the sun exposure has to be increased. Evacuated tube collectors can consist of several heat pipes. A heat pipe is a two-phase heat transfer device with a highly effective heat transfer rate through evaporating and condensing a fluid that is circulating in a sealed container.
CFD modeling of a thermal energy storage based heat pipe evacuated
The simulation results show an acceptable agreement with the experimental data with an average deviation of 4.80% and 2.04% for phase-I and phase-II, respectively. Daghigh et al. [8] performed an experimental analysis to investigate the thermal performance of heat pipe solar collector, and developed a numerical model to analyze the thermal
Numerical simulation investigation on thermal performance of heat pipe
Zhang et al. [24] studied the thermal performance of three-dimensional heat pipe flat solar collectors based on the finite volume method, which helped to design and optimize heat pipe flat solar
Simulation and optimization of pulsating heat pipe flat-plate solar
This research study presents an investigation on the behavior of a Pulsating Heat Pipe Flat-Plate Solar Collector (PHPFPSC) by artificial neural network method and an
Experimental investigation of evacuated heat pipe solar collector
The major components were a suspension reservoir used as the storage tank, a vacuum heat pipe solar collector (consisting of 20 heat pipes and a manifold), a pressure transmitter, a peristaltic pump, an auxiliary heat resource (comprising a boiler with an immersion heater, a cylinder and a coil heat exchanger), a pyranometer, a floodlight array framework and
Numerical simulation investigation on thermal performance of heat pipe
When the heat pipe diameter increases from 8 mm to 16 mm and the solar radiation intensities increases from 400 W/m 2 to 1000 W/m 2, the maximum value of the useful heat gain of water is 49.8 W and the instantaneous efficiency of the heat pipe flat-pipe collector is 58.1% under the heat pipe diameter of 12 mm and the radiant heat flux of 1000 W/m 2.
6 FAQs about [Heat pipe solar collector simulation]
How is solar collector thermal efficiency determined?
The solar collector thermal efficiency is determined according to EN ISO 9806:2013 standard and the absorber temperature distribution is measured through the back side of collector panel. The measured collector thermal efficiency and absorber temperature distribution are compared with the results from two different numerical models.
How does a solar collector work?
The energy conversion, which occurs inside solar collector, is carried out by a flat-plate, high conductive metal sheet called as the absorber plate. Useful heat, collected in the absorber plate, is taken away by working fluid, pumped through the flow channels which are welded to the absorber plate.
Is solar collector thermal efficiency correlated with internal temperature distribution?
The solar collector thermal efficiency is strongly correlated with the internal temperature distribution. In order to form highly accurate numerical model with proper heat losses, the spatial absorber temperature needs to be obtained.
Can a solar collector be modeled using a convective heat loss coefficient?
In this paper, the solar collector is modeled with assumption of uniform energy generation in the absorber tube and considering only a convective heat loss coefficient, calculated using external software SolEffs and set as an input for the CFD calculations.
How does temperature affect solar collector performance?
Higher temperature of fluid in marginal fins will also cause greater inequality of mass flow rate in other pipes, which contributes to the reduction of solar collector performance. Similar analysis could not be done with distributed-character model without an edge correction factor.
What are the different types of solar collector modeling methods?
These methods provide quite simple form of differential equations, with distributed character (D-C), which can be solved with the finite differences method. Another group of solar collector modeling approaches, highly developed during the last years, are CFD numerical methods .