Prospects and Challenges of Solar Thermal for Process Heating: A Comprehensive Review

Kumar, Laveet; Ahmed, Junaid; Assad, Mamdouh El Haj; Hasanuzzaman, M.

doi:10.3390/en15228501

Cited by 10 publications

(4 citation statements)

References 115 publications

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“…A solar thermal collector (STC) is commonly used for heating water applications for homes, hotels, hospitals, swimming pools, and dairy plants. Besides, the STC is also used to produce hot air for building space heating [5], [6] and process applications such as drying food, fruits, and agricultural products [7].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of a hybrid photovoltaic-thermal energy system for hot air production

Hiendro,

Husin,

Taufiqurrahman

et al. 2024

Bulletin EEI

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Solar energy as a non-fossil alternative energy source has become the best choice to overcome the problem of energy demand in most countries in the world. There are two different techniques to convert solar energy: photovoltaic (PV) panels to produce electricity and thermal collectors to generate heat. The two technologies can be combined to provide electrical and thermal energy either simultaneously or separately. In order to optimize the performance of a hybrid photovoltaic-thermal (PVT) solar air heater, it is necessary to collect experimental data on solar irradiation and temperature. This paper emphasized the development of a PVT energy system for hot air production in a temperature range of 50-55 °C. Additionally, experiments were constructed to monitor the information acquired from the proposed PVT solar air heater and the environment, such as hot air temperature, ambient temperature, and solar irradiation. The real-time monitoring system was set for five sample days. A microcontroller unit was used to control the hot air temperature and save the measurement data into memory. The experimental results showed that the proposed PVT solar air heater is capable of maintaining a certain level of hot air temperature throughout the day and night.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of a hybrid photovoltaic-thermal energy system for hot air production

Hiendro,

Husin,

Taufiqurrahman

et al. 2024

Bulletin EEI

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“…Compared to those, the heat requirements of industrial processes in the food and beverage industry are quite lower, often being the target temperature for the water/steam grid lines below 150 • C. Typical heat-demanding processes in the agri-food sector include drying, blanching, boiling, pasteurizing, smoking and sterilizing, apart from space heating or cleaning, for which thermal demand could be fully or partially satisfied with commercially available solar stationary collectors [5]. Further applications of such distillations (e.g., sugar refining) may require steam temperatures beyond 150 • C, for which the use of concentrating collectors may be more appropriate.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Technical Feasibility of Solar Heat Integration in Agri-Food Industries

Guillen-Angel

Julián

2023

Processes

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This work assesses the use of different solar heating integration configurations and heating storage solutions for three different agri-food industries located in southern Europe. TRNSYS is employed to model different Solar Heat for Industrial Process (SHIP) integration options and to quantify the solar thermal share with respect to the overall thermal demand, as well as to estimate the avoided consumption of fuels and CO2 emissions in the existing boiler units as a result of the solar system integration. The SHIP integration is complemented with the evaluation of selected phase-change materials (PCM) to promote latent heat storage under the specific conditions of the considered agri-food demo sites and solar irradiation characteristics. The arrangement of flat-plate solar collectors coupled with latent heat storage was found to enhance the yearly averaged solar share of the SHIP solutions, reaching 13% of the overall thermal demand for an average Spanish winery demo site. Furthermore, the estimation of the gross solar heat production for a mid-size Italian spirits distillery yielded 400 MWh/y, leading to annual fossil fuel savings of 32 tons and yearly avoided CO2 emissions of up to 100 tons. Similarly, the SHIP integration model for an average French charcuterie predicted a 55% solar share of the thermal demand required for plant cleaning purposes, resulting in roughly 50 tons of CO2 emissions avoided per year. The estimated payback period (PBP) for the Italian spirits demo case under the current economic scenario is below 9 years, whereas the PBP for the other demos does not exceed the expected lifetime of the solar plants (25 years).

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“…This is one of the reasons, why DHN are mostly implemented in urban regions. On the other hand, industrial plants are not always located within the meaningful range of DHN, although they require huge amounts of heat as well as release significant amounts of waste heat, depending on the specific industrial sector [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Economic Analysis of Mobile Thermal Energy Storages as Complement to District Heating

Resch,

Dehner

2023

Environmental and Climate Technologies

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Urban areas are increasingly supplied by district heating networks (DHN) because this technology is reliable, provides easy handling for the customer and contributes to the required reduction of greenhouse gas emissions if it is operated from renewable sources. Waste heat from the industrial sector can serve as such, however, industrial plants are often not in the meaningful range of DHN, as they are mostly located in the periphery. For this reason, the application of mobile thermal energy storages (M-TES) is investigated by the present research work. M-TES systems are technically capable of exchanging heat between a DHN and heat sources or heat sinks, as previous studies have shown, but economic viability could not be reached with former energy prices. However, geopolitical incidents of 2022 resulted in massive fluctuations on the energy markets and unpredicted price increases. Therefore, this paper provides an updated analysis of M-TES, considering the premises of 2022. An economic model according to VDI2067 was developed for calculating the costs of transported heat for different storage technologies and materials. Moreover, transportation by a Diesel driven truck was compared to an electric driven one. The updated analysis yielded economic feasibility for specific M-TES configurations, achieving minimum heat costs of € 89.5 per MWh. This is equivalent to a reduction of 40.3 % related to the prices of conventional district heating in Austria by end of 2022.

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Prospects and Challenges of Solar Thermal for Process Heating: A Comprehensive Review

Cited by 10 publications

References 115 publications

Experimental investigation of a hybrid photovoltaic-thermal energy system for hot air production

Experimental investigation of a hybrid photovoltaic-thermal energy system for hot air production

Evaluation of Technical Feasibility of Solar Heat Integration in Agri-Food Industries

Economic Analysis of Mobile Thermal Energy Storages as Complement to District Heating

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