Thermal Performance and Cost to Produce 90°C-Hot Water of Solar Thermal Collector and Hybrid Photovoltaic Thermal (PVT) Collector Systems

2016 ◽  
Vol 5 (4) ◽  
pp. 155
Author(s):  
Shigeki Hirasawa
Keyword(s):  
Thermal Performance ◽  
Hot Water ◽  
Solar Thermal ◽  
Solar Thermal Collector

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.

scholarly journals Evaluating the Performance of Two Solar Domestic Hot Water Systems of the Archetype Sustainable Houses

2021 ◽  
Author(s):  
Kamyar Tanha
Keyword(s):  
Flat Plate ◽  
Hot Water ◽  
Experimental Results ◽  
Solar Thermal ◽  
Energy Output ◽  
Evacuated Tube Collector ◽  
Solar Thermal Collector ◽  
Solar Thermal Collectors ◽  
Evacuated Tube Collectors ◽  
Evacuated Tube

This thesis is focused on the performance of the two SDHW systems of the sustainable Archetype houses in Vaughan, Ontario with daily hot water consumption of 225 litres. The first system consists of a flat plate solar thermal collector in conjunction with a gas boiler and a DWHR. The second SDHW system consists of an evacuated tube collector, an electric tank and a DWHR. The experimental results showed that the DWHRs were capable of an annual heat recovery of 789 kWh. The flat plate and evacuated tube collectors had an annual thermal energy output of 2038 kWh and 1383 kWh. The systems were also modeled in TRNSYS and validated with the experimental results. The simulated results showed that Edmonton has the highest annual energy consumption of 3763.4 kWh and 2852.9 kWh by gas boiler and electric tank and that the solar thermal collectors and DWHRs are most beneficial in Edmonton.

Experimental Research of Photovoltaic/Thermal (PV/T) Solar Systems

2013 ◽  
Vol 401-403 ◽  
pp. 146-150
Author(s):  
Yong Tai He ◽  
Rui Ming Liu ◽  
Jin Hao Liu
Keyword(s):  
Solar System ◽  
Flat Plate ◽  
Rural Families ◽  
Hot Water ◽  
Solar Thermal ◽  
Water Tank ◽  
Average Output ◽  
Solar Systems ◽  
Solar Thermal Collector ◽  
Electricity Power

A novel water photovoltaic/thermal (PV/T) solar system was designed, which consisted of a flat plate solar thermal collector and a flat plate PV/T collector in parallel. The area of flat plate solar thermal collector and PV/T collectors were 2m2, respectively. The performance of PV/T solar system was tested under condition of flat plate PV/T collectors with glass cover. The test results show that the average output electricity power of PV/T solar system was 28.1W in sunny day at 8:27-17:00 (March 8,2013, at Chuxiong city), the water temperature in the water tank insulation with 200L was raised from 18°C to 60°C. The daily useful efficiency of the PV/T solar system reached 46%. The PV/T solar system could meet the basic need of ordinary families to lighting electricity and hot water. The PV/T solar system had high practicality and was suitable for ordinary rural families.

scholarly journals Performance and Exergy Analyses of a Solar Assisted Heat Pump with Seasonal Heat Storage and Grey Water Heat Recovery Unit

Entropy ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 47
Author(s):  
Primož Poredoš ◽  
Boris Vidrih ◽  
Alojz Poredoš
Keyword(s):  
Heat Pump ◽  
Heat Storage ◽  
Exergy Efficiency ◽  
Hot Water ◽  
Solar Thermal ◽  
Grey Water ◽  
Heating And Cooling ◽  
Recovery Unit ◽  
Solar Thermal Collector ◽  
Seasonal Heat

The main research objective of this paper was to compare exergy performance of three different heat pump (HP)-based systems and one natural gas (NG)-based system for the production of heating and cooling energy in a single-house dwelling. The study considered systems based on: 1. A NG and auxiliary cooling unit; 2. Solely HP, 3. HP with additional seasonal heat storage (SHS) and a solar thermal collector (STC); 4. HP with SHS, a STC and a grey water (GW) recovery unit. The assessment of exergy efficiencies for each case was based on the transient systems simulation program TRNSYS, which was used for the simulation of energy use for space heating and cooling of the building, sanitary hot water production, and the thermal response of the seasonal heat storage and solar thermal system. The results show that an enormous waste of exergy is observed by the system based on an NG boiler (with annual overall exergy efficiency of 0.11) in comparison to the most efficient systems, based on HP water–water with a seasonal heat storage and solar thermal collector with the efficiency of 0.47. The same system with an added GW unit exhibits lower water temperatures, resulting in the exergy efficiency of 0.43. The other three systems, based on air–, water–, and ground–water HPs, show significantly lower annual source water temperatures (10.9, 11.0, 11.0, respectively) compared to systems with SHS and SHS + GW, with temperatures of 28.8 and 19.3 K, respectively.

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.

scholarly journals Experimental Study on the Thermal and Electrical Characteristics of an Air-Based Photovoltaic Thermal Collector

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2661 ◽  
Author(s):  
Sang-Myung Kim ◽  
Jin-Hee Kim ◽  
Jun-Tae Kim
Keyword(s):  
Flow Rate ◽  
Thermal Performance ◽  
Thermal Efficiency ◽  
Solar Thermal ◽  
Electrical Performance ◽  
Energy Output ◽  
Inlet Flow ◽  
Pv Module ◽  
Solar Thermal Collector ◽  
Inlet Flow Rate

A photovoltaic thermal (PVT) system is a technology that combines photovoltaics (PV) and a solar thermal collector to produce thermal energy and generate electricity. PVT systems have the advantage that the energy output per unit area is higher than the single use of a PV module or solar thermal collector, since both heat and electricity can be produced and used simultaneously. Air-based PVT collectors use air as the heat transfer medium and flow patterns are important factors that affect the performance of the PVT collector. In this study, the thermal and electrical performance and characteristics of an air-based PVT collector were analyzed through experiments. The PVT collector, with bending round-shaped heat-absorbing plates, which increase the air flow path, has been developed to improve the thermal performance. The experiment was done under the test conditions of ISO 9806:2017 for the thermal performance analysis of an air-based PVT collector. The electrical performance was analyzed under the same conditions. In the results, it can be found that the inlet flow rate of the PVT collector considerably affects the thermal efficiency. It was analyzed that as the inlet flow rate increased from 60 to 200 m3/h, the thermal efficiency increased from 29% to 42%. Then, the electricity efficiency was also analyzed, where it was determined that it was improved according to operating condition of PVT collector.

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