scholarly journals Analytical and Experimental Investigation of a Triangular-Channeled Solar Water Heater

2021 ◽  
Vol 12 (1) ◽  
pp. 17
Author(s):  
Muhammad Hasnain Tariq ◽  
Farooq Khan ◽  
Taqi Ahmad Cheema
Keyword(s):  
High Performance ◽  
The Body ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Water Heater ◽  
Domestic Water ◽  
Overall Performance ◽  
Solar Heat Flux ◽  
Heat Exchange Effectiveness ◽  
Exposed Surface Area

Utilization of solar energy is increasing in different states of the world, and the sun is regarded as the largest source of continuous and coherent energy. In the present study, a novel configuration of a v-corrugated solar collector with triangular channels for domestic water heating has been analytically investigated. A mathematical model based on effectiveness-NTU method is established to thermally examine the collector. Additionally, the heat losses from the body of the collector, useful energy from the collector and solar efficiency have been calculated analytically over different operating parameters. The effects of mass flow rate and solar heat flux on water outlet temperature are evaluated analytically and compared with the experimental results. Moreover, the study includes the experimental and theoretical investigation of the heat exchange effectiveness and thermal efficiency of the proposed absorber. The study shows that high temperature and high performance can be obtained from this collector as more heat energy can be collected by using triangular channels because all the three sides of these channels are exposed to solar radiations at the same time. Therefore, these channels will enhance the collector exposed surface area and thereby increase the solar efficiency and overall performance of the system.

scholarly journals Evaluation of a High-Performance Solar Home in Loveland, Colorado

2006 ◽  
Vol 129 (2) ◽  
pp. 226-234
Author(s):  
Robert Hendron ◽  
Mark Eastment ◽  
Ed Hancock ◽  
Greg Barker ◽  
Paul Reeves
Keyword(s):  
High Performance ◽  
Energy Savings ◽  
High Efficiency ◽  
Building Envelope ◽  
Operating Conditions ◽  
Hot Water ◽  
Space Heating ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Building America (BA) partner McStain Neighborhoods built the Discovery House in Loveland, CO, with an extensive package of energy-efficient features, including a high-performance envelope, efficient mechanical systems, a solar water heater integrated with the space-heating system, a heat-recovery ventilator (HRV), and ENERGY STAR appliances. The National Renewable Energy Laboratory (NREL) and Building Science Consortium conducted short-term field-testing and building energy simulations to evaluate the performance of the house. These evaluations are utilized by BA to improve future prototype designs and to identify critical research needs. The Discovery House building envelope and ducts were very tight under normal operating conditions. The HRV provided fresh air at a rate of about 35L∕s(75cfm), consistent with the recommendations of ASHRAE Standard 62.2. The solar hot water system is expected to meet the bulk of the domestic hot water (DHW) load (>83%), but only about 12% of the space-heating load. DOE-2.2 simulations predict whole-house source energy savings of 54% compared to the BA Benchmark (Hendron, R., 2005 NREL Report No. 37529, NREL, Golden, CO). The largest contributors to energy savings beyond McStain’s standard practice are the solar water heater, HRV, improved air distribution, high-efficiency boiler, and compact fluorescent lighting package.

Performance Analysis and Optimization of Fresnel Lens Concentrated Solar Water Heater

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Vinod Kumar Soni ◽  
R. L. Shrivastava ◽  
S. P. Untawale ◽  
Kshitij Shrivastava
Keyword(s):  
Life Cycle ◽  
Performance Analysis ◽  
Flat Plate ◽  
Mass Flow ◽  
Critical Parameters ◽  
Total System ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Concentrated solar power (CSP) is a mature and efficient technology to cater the large-scale demand of hot water. Conventional reflectors/mirrors in CSP share 50% of total system cost. High installation as well as O&M cost is the major concern in reflector-based CSP. Apart from the above, manufacturing defects and adverse service environment cause premature degradation of reflectors and substantial drop in efficiency and service life. Performance analysis of an innovative optically concentrated solar water heater (OCSWH) using plurality of Fresnel lenses of poly methyl methacrylate (PMMA) is presented in the work. Size and yield of any solar water heater (SWH) are mainly dependent on its aperture area, output temperature, and mass flow rate, which are termed herein as critical parameters. Series of experimentations is carried out by varying critical design and operating parameters viz. aperture area, outlet temperature, and rate of mass flow, and similar experimentation is also carried out on commercially available flat plate SWH to compare its performance. Loss of heat from riser and header pipes is restricted by application of effective insulation. Substantial improvement in collector efficiency, increase in rate of mass flow, and rise in discharge temperature with reference to flat plate collector are noted. Economics is also studied covering life cycle cost (LCC), life cycle saving (LCS), and energy payback period.

scholarly journals Evaluation of a High-Performance Solar Home in Loveland, Colorado

Solar Energy ◽  
2005 ◽  
Author(s):  
Robert Hendron ◽  
Mark Eastment ◽  
Ed Hancock ◽  
Greg Barker ◽  
Paul Reeves
Keyword(s):  
High Performance ◽  
Energy Savings ◽  
High Efficiency ◽  
Building Envelope ◽  
Operating Conditions ◽  
Hot Water ◽  
Space Heating ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Building America (BA) partner McStain Neighborhoods built the Discovery House in Loveland, Colorado, with an extensive package of energy-efficient features, including a high-performance envelope, efficient mechanical systems, a solar water heater integrated with the space-heating system, a heat-recovery ventilator (HRV), and ENERGY STAR™ appliances. The National Renewable Energy Laboratory (NREL) and Building Science Consortium (BSC) conducted short-term field-testing and building energy simulations to evaluate the performance of the house. These evaluations are utilized by BA to improve future prototype designs and to identify critical research needs. The Discovery House building envelope and ducts were very tight under normal operating conditions. The HRV provided fresh air at a rate of about 75 cfm (35 l/s), consistent with the recommendations of ASHRAE Standard 62.2. The solar hot water system is expected to meet the bulk of the domestic hot water (DHW) load (>83%), but only about 12% of the space-heating load. DOE-2.2 simulations predict whole-house source energy savings of 54% compared to the BA Benchmark [1]. The largest contributors to energy savings beyond McStain’s standard practice are the solar water heater, HRV, improved air distribution, high-efficiency boiler, and compact fluorescent lighting package.

scholarly journals TO STUDY AND ANALYSIS OF SOLAR WATER HEATER USING VARIOUS MASS FLOW RATE

2020 ◽  
Vol 5 (3) ◽  
pp. 139-144
Author(s):  
Sunaina Sailani
Keyword(s):  
Solar Radiation ◽  
Mass Flow Rate ◽  
Flow Rate ◽  
Storage Tank ◽  
The Body ◽  
Solar Water Heater ◽  
Water Heater ◽  
Water Pipes ◽  
Solar Water ◽  
Circulating Water

Solar water heater is a device which is used for heating the water using of sun energy. This system is connected like as storage tank, centrifugal pump, pipes and glass. The circulating flexible water pipes are connected with the metallic pipe, which are assembled with the body. The solar radiation are achieving from sun and passing although glass and collector for the purpose of the heating the circulating water. In this way we are achieving the various temperatures using of circulating pump.

The Device of the Automatic Backflow in Solar Water Heater-Temperature Control and Backflow for Pipe of Water Heater

2013 ◽  
Vol 827 ◽  
pp. 99-104
Author(s):  
Bin Li ◽  
Xi Chen ◽  
Xin Hao Li ◽  
Lu Kuan Ma ◽  
Wen Bo Lu ◽  
...  
Keyword(s):  
Water Resources ◽  
Cold Water ◽  
Hot Water ◽  
Water Tank ◽  
Solar Water Heater ◽  
Recycle Water ◽  
Delay Effect ◽  
Water Heater ◽  
Domestic Water ◽  
Solar Water

Now in general use in solar water heater, there is a long pipeline between water heater and tap, we have to empty the stored cold water before we use the hot water; and usually the water cannot meet required temperature due to the heating delay effect, thus the water also should be emptied, which leads to a waste of water resources. In order to solve this water wastage, we propose a device which can help to control the temperature and backflow of the water in water heater. The device accomplishes backflow of cold water automatically under the effect of gravity, and refluxed water will be stored in the recycle-water tank, thus ensuring the result that the water temperature satisfies the requirement. After the recycle-water tank is full, it will trigger the buoy to control the relay switch, then the water pump start to work to force the water into the water heater tank. Thus, realizing the recycling of water. This device can significantly save water resources in domestic water, and it has a broad market prospect.

scholarly journals A Comparative Performance Analysis between Serpentine-Flow Solar Water Heater and Photovoltaic Thermal Collector under Malaysian Climate Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
M. S. Hossain ◽  
Laveet Kumar ◽  
Afroza Nahar
Keyword(s):  
Thermal Performance ◽  
Simulation Models ◽  
Energy Conversion Efficiency ◽  
Experimental Investigations ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Water Heater ◽  
Comparative Performance ◽  
Climate Conditions ◽  
Solar Water

Solar energy has increasingly been employed for domestic and industrial water heating. Both conventional solar water heater (SWH) and photovoltaic thermal (PVT) systems suffer from the drawback of poor energy conversion efficiency. In this article, a unique parallel serpentine-flow thermal collector has been designed and developed that has been employed as an isolated SWH and also integrated with a 32-cell monocrystalline photovoltaic (PV) module. Simulation models of both SWH and PVT systems have been built in TRNSYS to study their thermal performance numerically. Thereafter, outdoor experimental investigations have been conducted under the composite climates of Malaysia. Experimental results show very good agreement with the simulation outcomes with disparity less than 2%. At the optimum flow rate, the maximum thermal efficiencies of SWH and PVT are 82.5% and 74.62%, respectively. Superior water outlet temperature was obtained with SWH. Although SWH exhibits superior thermal performance, PVT’s additional electrical output might make it preferable for several applications.

scholarly journals Creating a TRNSYS Model of Spiral Flow Flat Plate Solar Water Heater (SFSWH) and Comparing Unique Results with Parallel Flow Flat Plate Collector

2019 ◽  
Vol 8 (12S) ◽  
pp. 49-56
Keyword(s):  
Flat Plate ◽  
Parallel Flow ◽  
Hot Water ◽  
Simulation Program ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Spiral Flow ◽  
Water Heater ◽  
Solar Water ◽  
Flat Plate Collector

A unique SFSWH system is proposed for domestic hot water in Kovilpatti, TamilNadu, 9° 10′N 77°52′E. This SFSWH system is successfully simulated in TRNSYS Software and the results are clarified with the similarities of parallel flow solar water heater. Firstly, a complete model of spiral flow flat plate collector is formulated in TRNSYS software and taking into an account of heat transfer, outlet temperature and efficiency which are theoretically compared with parallel flow flat plate collector by means of TRNSYS simulation program. The SFSWH system performs a function with the assist of NASA surface Meteorology and solar energy year readings and with the assist of ISRO’s solar calculator application relative to Kovilpatti, Tamilnadu, India. To prove the accuracy of TRNSYS model of the SFSWH, an experimental setup is done at kovilpatti and required results were obtained under kovilpatti weather conditions. The validation of this SFSWH TRNSYS model simulation program is completed by checking the similarities between the predicted results from software with original results. This SFSWH TRNSYS model result shows the SFSWH is functioned more effectively compared with conventional parallel flow water heater. Thus TRNSYS model is reliable and which alternates the experimentation.

Experimental Investigation and Economic Analysis of Solar Water Heater Fitted with Hindrance Promoter

2021 ◽  
Vol 15 ◽  
Author(s):  
Rohit Khargotra ◽  
Raj Kumar ◽  
Tej Singh
Keyword(s):  
Economic Analysis ◽  
Operating Cost ◽  
Research Work ◽  
Specific Effect ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water ◽  
Collector Efficiency ◽  
Water Collector

Objective: To experimentally investigate the thermal performance of solar water heater by heat enhancer The objective of this research work to increase the instantaneous collector efficiency and the economic analysis of solar water heater. Method: To expand the regime availability of solar water heater, a minimum operating cost solar water collector is fabricated and is experimentally analyzed in Solan, Himachal Pradesh, India. In this solar water heater, the absorber tubes are made up of copper providing glazing on the top surface. An experimental is performed to analyze the influence of distinct parameters of the hindrance promoter on heat transfer of Solar water heater (SWH). The SWH is provided by the hindrance promoter with repeated winglet imposed on both side copper strips. Testing is carried out in the three main season’s summer, winter and rainy seasons. Result: The result shows that the instantaneous efficiency of the collector by inserting the hindrance promoter is found to be 81%. Conclusion: The average temperature of the 50l tank of water collected each day in the rainy, winter and summer season are, 60 ˚C, 52 ˚C and 65 ˚C respectively. Furthermore, to see the specific effect on the outlet water temperature of the SWH system a delta winglet is introduced into the absorber tube and compare with the smooth tube outlet temperature. The instantaneous efficiency of the collector by inserting the hindrance promoter is found to be 81.5%. Also, a detailed study on the economic analysis and the payback period is also investigated in this paper.

scholarly journals Predictive Power of Machine Learning for Optimizing Solar Water Heater Performance: The Potential Application of High-Throughput Screening

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Hao Li ◽  
Zhijian Liu ◽  
Kejun Liu ◽  
Zhien Zhang
Keyword(s):  
Machine Learning ◽  
High Throughput ◽  
Potential Application ◽  
High Throughput Screening ◽  
High Performance ◽  
Predictive Power ◽  
Prediction Method ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Predicting the performance of solar water heater (SWH) is challenging due to the complexity of the system. Fortunately, knowledge-based machine learning can provide a fast and precise prediction method for SWH performance. With the predictive power of machine learning models, we can further solve a more challenging question: how to cost-effectively design a high-performance SWH? Here, we summarize our recent studies and propose a general framework of SWH design using a machine learning-based high-throughput screening (HTS) method. Design of water-in-glass evacuated tube solar water heater (WGET-SWH) is selected as a case study to show the potential application of machine learning-based HTS to the design and optimization of solar energy systems.

scholarly journals Computational fluid dynamics analysis on solar water heater: Role of thermal stratification and mixing on dynamic mode of operation

2020 ◽  
Vol 24 (2 Part B) ◽  
pp. 1461-1472 ◽  
Author(s):  
Karuthedath Dileep ◽  
Arun Raj ◽  
Divakaran Dishnu ◽  
Ahamed Saleel ◽  
Mokkala Srinivas ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Water Temperature ◽  
Thermal Stratification ◽  
Outlet Temperature ◽  
Solar Water Heater ◽  
Water Heater ◽  
Flow Rates ◽  
Solar Water ◽  
Evacuated Tube Collector ◽  
Evacuated Tube

The present work attempts to demonstrate the competence and reliability of the proposed computational solver for real-scale modelling and analysis of a commercially available evacuated tube collector type solar water heater. A 3-D, transient numerical solver with user-defined functions is modelled using CFD program ANSYS-Fluent 15.0?. The objective is to analyse the evacuated tube collector type solar water heater in two states of operation, namely, static (stagnant charging) and dynamic (retrieval) modes. This work emphasizes the determination of the impact of thermal stratification, and fluid mixing in the storage tank on the outlet temperature profile during discharging. Volume flow rates vary from 3-15 Lpm. The reported findings suggest that with an increase of fluid-flow during discharge, the stratified layers disorient and lead to rapid mixing, which eventually results in an earlier drop in the outlet water temperature. Furthermore, at low fluid-flow rates, the stratified layers remain intact with only a gradual decay in the outlet temperature profile. The analysis reveals that based on the user?s choice, it is possible to vary discharge flow rate until 7 Lpm without a significant drop in the outlet water temperature. Furthermore, computational results have been successfully validated with experimental findings.

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