Thermoelectric Power Generation Using Waste-Heat Energy as an Alternative Green Technology

Ismail, Basel I.; Ahmed, Wael H.

doi:10.2174/1874476110902010027

Cited by 184 publications

(108 citation statements)

References 18 publications

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“…In countries such as Iceland and Japan, near-surface geothermal energy can be used by means of heat pumps and direct geothermal heat for maintaining the indoor temperature at the desired level [107,108]. Countries with comparatively unfavorable geological conditions still might assess possible options in terms of using waste heat of combined heat and power (CHP) units to heat the greenhouse during cold days [109] or cool them down during hot days. Those CHP units can mostly be found in combination with agricultural biogas plants, whereby surplus heat is fairly cheap for further disposal.…”

Section: Energymentioning

confidence: 99%

Challenges of Sustainable and Commercial Aquaponics

et al. 2015

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Abstract:The world is facing a number of serious problems of which population rise, climate change, soil degradation, water scarcity and food security are among the most important. Aquaponics, as a closed loop system consisting of hydroponics and aquaculture elements, could contribute to addressing these problems. However, there is a lack of quantitative research to support the development of economically feasible aquaponics systems. Although many studies have addressed some scientific aspects, there has been limited focus on commercial implementation. In this review paper, opportunities that have the potential to fill the gap between research and implementation of commercial aquaponic systems have been identified. The analysis shows that aquaponics is capable of being an important driver for the development of integrated food production systems. Arid regions suffering from water stress will particularly benefit from this technology being operated in a commercial environment. OPEN ACCESSSustainability 2015, 7 4200

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Section: Energymentioning

confidence: 99%

Challenges of Sustainable and Commercial Aquaponics

et al. 2015

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“…Thus, it could be stated that the solid state thermoelectric generator produced results that were consistent with the current state of the art methods, according to the authors of [22,29,35,38]. It presented a similar performance to the thermogenerator that was presented by Riffat et al [25], which generated 150 W in 12 V and 24 V and was capable of charging batteries and accessories of the automobile, with the output power similar to that of Gao [36], whose multi-mission radioisotope thermoelectric generator (MMRTG) generated 120 W.…”

Section: Resultsmentioning

confidence: 59%

Characterization of a Thermoelectric Generator (TEG) System for Waste Heat Recovery

2018

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This paper presents the development and characterization of a thermoelectric generator (TEG) system for waste heat recovery to low temperature in industrial processes. The relevance of this mode of electric energy harvest is that it is clean energy and it depends only on the capture of losses. These residual energies from industrial processes are, in principle, released into the environment without being exploited. With the proposed device, the waste energy will not be released into the environment and will be used for electrical generation, which is useful for heat production. The characterization of TEGs that are used a data-acquisition system have measured data for the voltage, current, and temperature, in real-time, for temperatures down to 200 • C without signal degradation. As a result, the measured data has revealed an open circuit voltage of V OC = 0.4306 × ∆T, internal resistance of R 0 = 9.41 Ω, with tolerance ∆R int = ±0.77 Ω, where R int = 9.41 ± 0.77 Ω. The measurements were made on the condition that the maximum output was obtained at a temperature gradient of ∆T = 80 • C, resulting in a maximum power gain of P out ≈ 29 W.

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“…Normally, when using cogeneration power plants and sacrificing a unit of electricity, it is possible to obtain about eight times this energy as heat (in contrast, for example, when using a heat pump, it would only be possible to get that amount multiplied by three) [71][72][73][74]. When a plant starts operating as a cogeneration plant and its electricity production falls, another condensation plant which is not operating at maximum output will be responsible for increasing the power in order to compensate for this change, thus resulting in a modification of fuel consumption [75].…”

Section: Fuel Used Invariability and Efficiencymentioning

confidence: 99%

District Heating and Cogeneration in the EU-28: Current Situation, Potential and Proposed Energy Strategy for Its Generalisation

Colmenar‐Santos¹,

Borge-Díez²,

Rosales-Asensio³

2017

District Heating and Cooling Networks in the European Union

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Yearly, EU-28 conventional thermal generating plants reject a greater amount of energy than what ultimately is utilised by residential and commercial loads for heating and hot water. If this waste heat were to be used through district heating networks, given a previous energy valorisation, there would be a noticeable decrease in imported fossil fuels for heating. As a consequence, benefits in the form of an energy efficiency increase, an energy security improvement, and a minimisation of emitted greenhouse gases would occur. Given that it is not expected for heat demand to decrease significantly in the medium term, district heating networks show the greatest potential for the development of cogeneration. However, to make this happen, some barriers that are far from being technological but are mostly institutional and financial need to be removed. The purpose of this review is to provide information on the potential of using waste heat from conventional thermal power plants (subsequently converted into cogeneration plants) in district heating networks located in the EU-28. For this, a preliminary assessment is conducted in order to show an estimate of the cost of adopting an energy strategy in which district heating networks are a major player of the energy mix. From this assessment, it is possible to see that even though the energy strategy proposed in this paper, which is based on a dramatic increase in the joint use of district heating networks and cogeneration, is capital-intensive and would require an annual investment of roughly 300 billion euros, its adoption would result in a reduction of yearly fuel expenses in the order of 100 billion euros and a shortening of about 15% of the total final energy consumption, which makes it of paramount interest as an enabler of the legal basis of the "Secure, Clean and Efficient Energy" future enacted by the EU-28 Horizon 2020.

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Thermoelectric Power Generation Using Waste-Heat Energy as an Alternative Green Technology

Cited by 184 publications

References 18 publications

Challenges of Sustainable and Commercial Aquaponics

Challenges of Sustainable and Commercial Aquaponics

Characterization of a Thermoelectric Generator (TEG) System for Waste Heat Recovery

District Heating and Cogeneration in the EU-28: Current Situation, Potential and Proposed Energy Strategy for Its Generalisation

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