Photovoltaic-Thermal Collector System for Domestic Application

2006 ◽  
Vol 129 (2) ◽  
pp. 205-209 ◽  
Author(s):  
T. T. Chow ◽  
J. Ji ◽  
W. He
Keyword(s):  
Energy Performance ◽  
Primary Energy ◽  
Heat Energy ◽  
Solar Thermal ◽  
Test Results ◽  
Thermal Systems ◽  
Collector System ◽  
Solar Thermal Collector ◽  
Reduced Temperature ◽  
Direct Attachment

Photovoltaic-thermal (PV/T) systems integrate photovoltaic and solar thermal technologies into one single system with dual production of electricity and heat energy. A typical arrangement is the direct attachment of PV modules onto a solar thermal collector surface. For a given collector surface area, the overall system energy performance is expected higher than the conventional “side-by-side” PV and solar thermal systems. In the development of PV/T collector technology using water as the coolant, the most common design follows the sheet-and-tube thermal absorber concept. Fin performance of the thermal absorber has been identified as one important factor that affects much the overall energy performance of the collector. Accordingly, an aluminum-alloy flat-box type PV/T collector prototype was constructed and tested in Hong Kong. Our test results indicate that a high combined thermal and electrical efficiency can be achieved. The primary-energy-saving efficiency for daily exposure approaches 65% at zero reduced temperature operation. With a simple and handy design, the product is considered to be very suitable for domestic application.

Photovoltaic-Thermal Collector System for Domestic Application

Solar Energy ◽  
2005 ◽  
Author(s):  
T. T. Chow ◽  
J. Ji ◽  
W. He
Keyword(s):  
Energy Performance ◽  
Primary Energy ◽  
Heat Energy ◽  
Solar Thermal ◽  
Test Results ◽  
Thermal Systems ◽  
Collector System ◽  
Solar Thermal Collector ◽  
Reduced Temperature ◽  
Direct Attachment

Photovoltaic-thermal (PV/T) systems integrate photovoltaic and solar thermal technologies into one single system with dual production of electricity and heat energy. A typical arrangement is the direct attachment of PV modules on to a solar thermal collector surface. For a given collector surface area, the overall system energy performance is expected higher than the conventional “side-by-side” PV and solar thermal systems. In the development of PV/T collector technology using water as the coolant, the most common design follows the sheet-and-tube thermal absorber concept. Fin performance of the thermal absorber has been identified as one important factor that affects much the overall energy performance of the collector. Accordingly, an aluminum-alloy flat-box type PV/T collector prototype was constructed and tested. Our test results indicate that a high combined thermal and electrical efficiency can be achieved. The primary-energy-saving efficiency for daily exposure approaches 65% at zero reduced temperature operation. With a simple and handy design, the product is considered to be very suitable for domestic application.

scholarly journals Design of a New Solar Thermal Collector with Ceramic Materials Integrated into the Building Facades

Designs ◽  
2018 ◽  
Vol 2 (4) ◽  
pp. 44
Author(s):  
Jordi Roviras Miñana ◽  
Vicente Sarrablo Moreno
Keyword(s):  
Ceramic Materials ◽  
Building Envelope ◽  
Hot Water ◽  
Solar Thermal ◽  
Collector System ◽  
System A ◽  
Solar Thermal Collector ◽  
Building Facades ◽  
Solar Thermal Collectors ◽  
High Degree

The work presented here aims to demonstrate the technical, architectural, and energy viability of solar thermal collectors made with ceramic materials and their suitability for domestic hot water (DHW) and building heating systems in the Mediterranean climate. The proposal is for the design of a ceramic shell, formed by collector and non-collecting panels, which forms part of the building system itself, and is capable of responding to the basic requirements of a building envelope and harnessing solar energy. Ceramics considerably reduce the final cost of the collector system and offer the new system a variety of compositional and chromatic finishes, occupying the entire building surface and achieving a high degree of architectural integration, although less energy-efficient compared to a conventional metallic collector.

Energy Efficiency of Building Envelopes

2013 ◽  
Vol 855 ◽  
pp. 39-42 ◽  
Author(s):  
Richard Jedinák
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Performance ◽  
Primary Energy ◽  
Insulation Material ◽  
Thermal Systems ◽  
Architectural Engineering ◽  
Energy Efficient Buildings ◽  
Wide Range ◽  
The Right

Energy efficiency of buildings is one of the basic requirements of current architectural engineering. The new recast of the Energy Performance of Buildings Directive (EPBD) calls for all new buildings to be nearly zero energy buildings by the end of 2020. To achieve this target is quite challenging. Nowadays some of the buildings that are realized are reaching these objectives. The current market is able to offer a wide range of thermal systems and thermal insulation materials themselves and the right choice of thermal system or thermal insulation material is a difficult task. Considering the significant impact that energy consumption has, is particularly important to implement policies aimed at improving energy efficiency in buildings. Highly energy efficient buildings can either save primary energy or disseminate the use of the most suitable technologies to be used in new constructions. The building may be considered as an example to study and optimize the benefits of higher energy efficiency together with the use of renewable energy systems. This article is going to discuss the characteristics of these solutions, trends in their research and development and their conceptual bases.

scholarly journals A methodological approach for energy demand assessment: theoretical analysis on solar thermal collector energy contribution

2021 ◽  
Vol 312 ◽  
pp. 02002
Author(s):  
Domenico Palladino ◽  
Carmen Lavinia ◽  
Francesca Margiotta ◽  
Francesca Pagliaro
Keyword(s):  
Energy Demand ◽  
Methodological Approach ◽  
Energy Performance ◽  
Hot Water ◽  
Solar Thermal ◽  
Water Volume ◽  
Domestic Hot Water ◽  
Solar Thermal Collector ◽  
Calculation Methodology ◽  
Simplified Calculation

Solar thermal collector system is a widely used solution involving renewable energy source to cover the energy demand for domestic hot water production. At Italian level, the UNI TS 11300 provides a calculation methodology based on two approaches: the asset rating, which is easy to be applied but provides approximated results, and the tailored rating, which is more reliable but requires several detailed information. In this context, the present work proposes a new methodological approach to develop a simplified calculation method in order to obtain accurate energy performance results with no-additional cost for assessors and final users. Different case studies were analysed carrying out parametric simulations. The obtained results have led to the definition of the new simplified calculation methodology to predict the thermal energy supplied by solar thermal collectors; it allows also calculating the domestic hot water volume to be covered by other technical building systems, becoming a useful tool for their pre-dimensioning. Besides, the results open to new scenarios of interest, such as the application of the same approach to other energy services in order to integrate the outcomes of the asset rating provided by the UNI TS 11300.

Economic and environmental evaluation in introducing solar thermal collector system for large scale plant factory

2019 ◽  
Vol 2019.24 (0) ◽  
pp. C232
Author(s):  
Ryunosuke SUGAWARA ◽  
Masaomi TANAKA ◽  
Alvaro QUILES ◽  
Yohei NAGANO ◽  
Motoyuki ARAI ◽  
...  
Keyword(s):  
Large Scale ◽  
Solar Thermal ◽  
Environmental Evaluation ◽  
Collector System ◽  
Solar Thermal Collector ◽  
Plant Factory

scholarly journals Potential for Building Façade-Integrated Solar Thermal Collectors in a Highly Urbanized Context

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5801 ◽  
Author(s):  
Andrea Frattolillo ◽  
Laura Canale ◽  
Giorgio Ficco ◽  
Costantino C. Mastino ◽  
Marco Dell’Isola
Keyword(s):  
Primary Energy ◽  
Building Envelope ◽  
Solar Thermal ◽  
Thermal Systems ◽  
The Real ◽  
Solar Systems ◽  
Energy Needs ◽  
Solar Thermal Collectors ◽  
The Mediterranean

Development of technologies, materials, support systems, and coatings has made the integration of solar thermal systems into the building envelope increasingly possible. Solar thermal collectors can either be directly integrated, substituting conventional roof or façade covering materials, or constitute independent devices added to a roof or façade structure. Aimed at estimating the real effectiveness of building-integrated solar systems for domestic heat water (DHW) production or for heating integration, when horizontal or inclined pitches on buildings are not applicable, the authors analyze a case study with different scenarios, taking into account the issues connected to a highly urbanized context in the Mediterranean climate. A GIS model was used for estimating the energy balance, while the real producibility of the simulated systems was calculated by a dynamic hourly simulation model, realized according to ISO 52016. The savings in terms of primary energy needs obtained by installing solar thermal systems on the facade are presented, and the differences between the cases in which the system is used for DHW production only and for space heating too are distinguished and discussed. The evaluated potential is quantified in the absence of roof collectors, despite their high potential in the Mediterranean region, in order to better appreciate the effects induced by integrated facade systems.

Modeling and Optimization of Evacuated Tubular Solar Thermal Collector

2021 ◽  
pp. 90-120
Keyword(s):  
Global Solar Radiation ◽  
Solar Thermal ◽  
Thermal Systems ◽  
Modeling And Optimization ◽  
Tilted Surface ◽  
Solar Thermal Collector ◽  
Confirmatory Tests ◽  
Optimal Setting ◽  
Collector Efficiency ◽  
Simple Additive Weighting

Modeling and optimization of evacuated tubular solar thermal collector (ETSTC) is discussed using a modified simple additive weighting (M-SAW) method. To improve the system efficiency (η) and end day temperature (Tsfd), ETSTC parameter (i.e., start day temperature [Tsid], ambient temperature [Tad], global solar radiation on tilted surface [GT], and wind speed [Ws]) are optimized. The applied method is significantly improved the efficiency (η) and determined the best setting for ETSCT. Test no.10 is the optimal experimental trail run and corresponding collector efficiency is obtained as 43%. Further, experimental data are statistically tested via parametric, ANOVA analysis, and found satisfactory and acceptable. Last, confirmatory tests results show comparable and acceptable w.r.t. experimental results for the optimal setting obtained through proposed method. The proposed MCDM method can be recognized as potential use for modeling and optimization of other thermal systems.

Energetic and exergetic analyses on structural optimized parabolic trough solar receivers in a concentrated solar–thermal collector system

Energy ◽  
2019 ◽  
Vol 171 ◽  
pp. 611-623 ◽  
Author(s):  
Qiliang Wang ◽  
Mingke Hu ◽  
Honglun Yang ◽  
Jingyu Cao ◽  
Jing Li ◽  
...  
Keyword(s):  
Solar Thermal ◽  
Parabolic Trough ◽  
Collector System ◽  
Solar Thermal Collector
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