Performance results of a solar greenhouse combining electrical and thermal energy production

2010 ◽  
Vol 106 (1) ◽  
pp. 48-57 ◽  
Author(s):  
P.J. Sonneveld ◽  
G.L.A.M. Swinkels ◽  
J. Campen ◽  
B.A.J. van Tuijl ◽  
H.J.J. Janssen ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Energy Production ◽  
Solar Greenhouse ◽  
Performance Results

Life cycle assessment of thermal energy production from short-rotation willow biomass in Southern Ontario, Canada

2017 ◽  
Vol 204 ◽  
pp. 343-352 ◽  
Author(s):  
Goretty M. Dias ◽  
Nathan W. Ayer ◽  
Kumudinie Kariyapperuma ◽  
Naresh Thevathasan ◽  
Andrew Gordon ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Thermal Energy ◽  
Energy Production ◽  
Southern Ontario ◽  
Short Rotation

scholarly journals Solar Tower Power Plants of Molten Salt External Receivers in Algeria: Analysis of Direct Normal Irradiation on Performance

2018 ◽  
Vol 8 (8) ◽  
pp. 1221 ◽  
Author(s):  
Abdelkader Rouibah ◽  
Djamel Benazzouz ◽  
Rahmani Kouider ◽  
Awf Al-Kassir ◽  
Justo García-Sanz-Calcedo ◽  
...  
Keyword(s):  
Power Generation ◽  
Energy Storage ◽  
Thermal Energy ◽  
Greenhouse Effect ◽  
Energy Production ◽  
Power Plants ◽  
Storage Capacity ◽  
Real Data ◽  
Multiple Power ◽  
And Storage

The increase of solar energy production has become a solution to meet the demand of electricity and reduce the greenhouse effect worldwide. This paper aims to determine the performance and viability of direct normal irradiation of three solar tower power plants in Algeria, to be installed in the highlands and the Sahara (Béchar, El Oued, and Djelfa regions). The performance of the plants was obtained through a system advisor model simulator. It used real data gathered from appropriate meteorological files. A relationship between the solar multiple (SM), power generation, and thermal energy storage (TES) hours was observed. The results showed that the optimal heliostat field corresponds to 1.8 SM and 2 TES hours in Béchar, 1.2 SM and 2 TES hours for El Oued, and 1.5 SM and 4 TES hours for Djelfa. This study shows that there is an interesting relationship between the solar multiple, power generation, and storage capacity.

Hybrid Plants for Thermal Energy Production

2020 ◽  
pp. 235-364
Author(s):  
Dimitris Al. Katsaprakakis
Keyword(s):  
Thermal Energy ◽  
Energy Production ◽  
Hybrid Plants

The Deeper the Better? A Thermogeological Analysis of Medium-deep Borehole Heat Exchanger Efficiency in Crystalline Rocks

2022 ◽  
Author(s):  
Kaiu Piipponen ◽  
Annu Martinkauppi ◽  
Sami Vallin ◽  
Teppo Arola ◽  
Nina Leppäharju ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Heat Exchanger ◽  
Thermal Energy ◽  
Heat Production ◽  
Heat Exchangers ◽  
Energy Production ◽  
Crystalline Rocks ◽  
Deep Borehole ◽  
Deep Well ◽  
Borehole Heat Exchangers

Abstract The energy sector is undergoing a fundamental transformation, with significant investment in low-carbon technologies to replace fossil-based systems. In densely populated urban areas, deep boreholes offer an alternative over shallow geothermal systems, which demand extensive surface area to attain large-scale heat production. This paper presents numerical calculations of the thermal energy that can be extracted from the medium-deep borehole heat exchangers of depths ranging from 600-3000 m. We applied the thermogeological parameters of three locations across Finland and tested two types of coaxial borehole heat exchangers to understand better the variables that affect heat production in low permeability crystalline rocks. For each depth, location, and heat collector type, we used a range of fluid flow rates to examine the correlation between thermal energy production and resulting outlet temperature. Our results indicate a trade-off between thermal energy production and outlet fluid temperature depending on the fluid flow rate, and that the vacuum-insulated tubing outperforms high-density polyethylene pipe in energy and temperature production. In addition, the results suggest that the local thermogeological factors impact heat production. Maximum energy production from a 600-m-deep well achieved 170 MWh/a, increasing to 330 MWh/a from a 1000-m-deep well, 980 MWh/a from a 2-km-deep well, and up to 1880 MWh/a from a 3-km-deep well. We demonstrate that understanding the interplay of the local geology, heat exchanger materials, and fluid circulation rates is necessary to maximize the potential of medium-deep geothermal boreholes as a reliable long-term baseload energy source.

scholarly journals Thermal Performance Visualization Using Object−Oriented Physical and Building Information Modeling

2020 ◽  
Vol 10 (17) ◽  
pp. 5888
Author(s):  
WoonSeong Jeong ◽  
Wei Yan ◽  
Chang Joon Lee
Keyword(s):  
Thermal Performance ◽  
Thermal Energy ◽  
Object Oriented ◽  
Building Design ◽  
Energy Performance ◽  
Information Modeling ◽  
Performance Simulation ◽  
Performance Visualization ◽  
Building Information ◽  
Performance Results

This study demonstrates the research and development of a visualization method called thermal performance simulation. The objective of this study is providing the results of thermal performance simulation results into building information modeling (BIM) models, displaying a series of thermal performance results, and enabling stakeholders to use the BIM tool as a common user interface in the early design stage. This method utilizes a combination of object-oriented physical modeling (OOPM) and BIM. To implement the suggested method, a specific BIM authoring tool called the application programming interface (API) was adopted, as well as an external database to maintain the thermal energy performance results from the OOPM tool. Based on this method, this study created a prototype called the thermal energy performance visualization (TEPV). The TEPV translates the information from the external database to the thermal energy performance indicator (TEPI) parameter in the BIM tool. In the TEPI, whenever BIM models are generated for building design, the thermal energy performance results are visualized by color-coding the building components in the BIM models. Visualization of thermal energy performance results enables non-engineers such as architects to explicitly inspect the simulation results. Moreover, the TEPV facilitates architects using BIM as an interface in building design to visualize building thermal energy performance, enhancing their design production at the early design stages.

Mixed biomass pellets for thermal energy production: A review of combustion models

2014 ◽  
Vol 127 ◽  
pp. 135-140 ◽  
Author(s):  
L.J.R. Nunes ◽  
J.C.O. Matias ◽  
J.P.S. Catalão
Keyword(s):  
Thermal Energy ◽  
Energy Production ◽  
Combustion Models ◽  
Mixed Biomass

scholarly journals The Evaluation of Feasibility of Thermal Energy Storage System at Riga TPP-2

2015 ◽  
Vol 52 (6) ◽  
pp. 22-37 ◽  
Author(s):  
P. Ivanova ◽  
O. Linkevics ◽  
A. Cers
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Production ◽  
Storage System ◽  
Energy System ◽  
Energy Storage System ◽  
Thermal Energy Storage System ◽  
Production Flexibility ◽  
Power Plant Operation

Abstract The installation of thermal energy storage system (TES) provides the optimisation of energy source, energy security supply, power plant operation and energy production flexibility. The aim of the present research is to evaluate the feasibility of thermal energy system installation at Riga TPP–2. The six modes were investigated: four for non-heating periods and two for heating periods. Different research methods were used: data statistic processing, data analysis, analogy, forecasting, financial method and correlation and regression method. In the end, the best mode was chosen – the increase of cogeneration unit efficiency during the summer.

scholarly journals Daily forecast of solar thermal energy production for heat storage management

2016 ◽  
Vol 139 ◽  
pp. 86-98 ◽  
Author(s):  
Sylvain Rodat ◽  
Christian Tantolin ◽  
Xavier Le Pivert ◽  
Sylvain Lespinats
Keyword(s):  
Thermal Energy ◽  
Energy Production ◽  
Heat Storage ◽  
Storage Management ◽  
Solar Thermal ◽  
Solar Thermal Energy ◽  
Daily Forecast

Performance Evaluation of an Asymmetric Hybrid Solar Collector: Effect of Nanofluids on the Electrical and Thermal Energy Production

2016 ◽  
Author(s):  
M. T. Nitsas ◽  
I. P. Koronaki ◽  
A. S. Kontos
Keyword(s):  
Performance Evaluation ◽  
Thermal Energy ◽  
Solar Collector ◽  
Energy Production ◽  
Calculated Data ◽  
Electrical Energy ◽  
Hot Water ◽  
Cell Efficiency ◽  
Asymmetric Hybrid ◽  
The Mediterranean

The scope of this work is the analysis of the electrical and thermal performance of an asymmetric hybrid solar collector PVT and the prospect of the installation of a system consisting of these collectors in the Mediterranean region. For the purpose of this work, the Solarus V11 PVT collector (readily available in our laboratory) was chosen and numerically modeled. The main asset of this collector is its asymmetric reflector that consists of a circular and a parabolic part leading to a maximum thermal energy production even in winter as the solar radiation is concentrated in the edge of the reflector rather than in the center of it. Using a software developed in Matlab, the calculated data are presented for both thermal and electrical energy and they are compared with the hot water and electrical energy requirements (per month) around the Mediterranean territory. Furthermore, a parametric study is conducted in order to investigate the effect of the mass flow rate and the PVT array configuration on the thermal and electrical production, as well as the efficiency of the solar cells of the system. Moreover, in order to increase the PV cell efficiency, nanofluids, i.e. mixtures of nanometer size particles well-dispersed in a base fluid, are proposed as heat transfer fluids and the analysis for the performance evaluation is conducted for different nanoparticle loadings.

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