Energy and Exergy Analysis of Heat Recovery from the Accumulating Tanks of a Central Heating System by Employing a Sample of Thermoelectric Generators

Öz

Heat recovery using a series of thermoelectric generator (TEG) samples improved and studied previously is investigated in this paper. For this, such TEGs are connected to the accumulating tanks (ATs) of a geothermal central heating system assisted by natural gas to recover all waste heat from those devices. The study was carried out based on energy and exergy analysis. In the energy analysis part of the study, the proposed energy conversion efficiency of the TEG sample for the temperature difference in an AT-TEG system in this current study, which is 2%, was applied to find power output and energetic efficiency. As a result, total net power production was 9.888 kW, while overall energy efficiency was 7.717%. It can be observed that this amount of net power generation is sufficient to supply 61.262% of the electrical power needed for the circulating pumps in the remaining parts of the central heating system. This research reveals that TEG application in heat recovery is a promising way forward, but there is still a need to enhance the conversion efficiency of such devices.

Anahtar Kelimeler

• Analysis
• Energy
• Exergy
• Thermoelectric Generator

Kaynakça

1. [1] Zoui M.A., Bentouba S., Stocholm J.G., Bourouis M., 2020. A Review on Thermoelectric Generators: Progress and Applications, Energies,13,pp. 1-32.
2. [2] Lan S., Yang Z., Chen R., Stobart R., 2018. A Dynamic Model for Thermoelectric Generator Applied to Vehicle Waste Heat Recovery, Applied Energy, 210, pp. 327-338.
3. [3] Orr B., Akbarzadeh A., Mochizuki M., Singh R., 2016. A Review of Car Waste Heat Recovery Systems Utilising Thermoelectric Generators and Heat Pipes, Applied Thermal Engineering, 101, pp. 90-95.
4. [4] Luo D., Wang R., Yu W., Zhou W., 2020. A Numerical Study on the Performance of a Converging Thermoelectric Generator System Used for Waste Heat Recovery, Applied Energy, 270, 115181.
5. [5] Ziolkowski P., Zabrocki K., Müller E., 2018. TEG Design for Waste Heat Recovery at an Aviation Jet Engine Nozzle, Applied Sciences, 8(12), 2637.
6. [6] Kousksou T., Bédécarrats J.-P., Champier D., Pignolet P., Brillet C., 2011. Numerical Study of Thermoelectric Power Generation for a Helicopter Conical Nozzle, Journal of Power Sources, 196(8), pp. 4026–4032.
7. [7] Nour Eddine A., Chalet D., Faure X., Aixala L., Chessé P., 2018. Optimization and Characterization of a Thermoelectric Generator Prototype for Marine Engine Application, Energy, 143, pp. 682–695.
8. [8] Olaniyi E.O., Prause G., 2018. Investment Analysis of Waste Heat Recovery System Installations on Ships’ Engines, Journal of Marine Science and Engineering, 8(10), 811.

9. [9] Dai D., Zhou Y., Liu J., 2011. Liquid Metal Based Thermoelectric Generation System for Waste Heat Recovery, Renewable Energy, 36(12), pp. 3530–3536.
10. [10] Wang C., Tang S., Liu X., Su G.H., Tian W., Qiu S., 2020. Experimental Study on Heat Pipe Thermoelectric Generator for Industrial High Temperature Waste Heat Recovery, Applied Thermal Engineering, 175, pp. 1-11.
11. [11] Meng F., Chen L., Feng Y., Xiong B., 2017. Thermoelectric Generator for Industrial Gas Phase Waste Heat Recovery, Energy, 135, pp. 83–90.
12. [12] Araiz M., Casi Á., Catalán L., Martínez Á., Astrain D., 2020. Prospects of Waste-Heat Recovery from a Real Industry Using Thermoelectric Generators: Economic and Power Output Analysis, Energy Conversion and Management, 205, 112376.
13. [13] Zou S., Kanimba E., Diller T.E., Tian Z., He Z., 2018. Modeling Assisted Evaluation of Direct Electricity Generation from Waste Heat of Wastewater via a Thermoelectric Generator, Science of the Total Environment, 635, pp. 1215–1224.
14. [14] Meng F., Chen L., Feng Y., Xiong B., 2017. Thermoelectric Generator for Industrial Gas Phase Waste Heat Recovery, Energy, 135, pp. 83–90.
15. [15] El Hage H., Ramadan M., Jaber H., Khaled M., Olabi A.G., 2016. A Short Review on the Techniques of Waste Heat Recovery from DomesticApplications, Energy Sources, 42, pp. 1-16.
16. [16] Khaled M., Ramadan M., 2017. Study of the Thermal Behavior of Multi Tube Tank in Heat Recovery from Chimney—Analysis and Optimization, Heat Transfer Engineering, 39(5), pp. 399–409.
17. [17] Panwar N., Kumar H., 2019. Waste Heat Recovery from Improved Cookstove through Thermoelectric Generator, International Journal of Ambient Energy, 43(1), pp. 1–17.
18. [18] Sakdanuphab R., Sakulkalavek A., 2017. Design, Empirical Modelling and Analysis of a Waste-Heat Recovery System Coupled to a Traditional Cooking Stove, Energy Conversion and Management, 139, pp. 182–193.
19. [19] Montecucco A., Siviter J., Knox A.R., 2017. Combined Heat and Power System for Stoves with Thermoelectric Generators, Applied Energy, 185, pp. 1336–1342.
20. [20] Jaber H., Khaled M., Lemenand T., Faraj J., Bazzi H., Ramadan M., 2017. Effect of Exhaust Gases Temperature on the Performance of a Hybrid Heat Recovery System,Energy Procedia, 119, pp. 775–782.
21. [21] Indira S.S., Vaithilingam C.A., Chong K.-K., Saidur R., Faizal M., Abubakar S., Paiman S., 2020. A Review on Various Configurations of Hybrid Concentrator Photovoltaic and Thermoelectric Generator System. Solar Energy, 201, pp. 122–148.
22. [22] Faddouli A., Labrim H., Fadili S., Habchi A., Hartiti B., Benaissa M., Benyoussef A., 2019. Numerical Analysis and Performance Investigation of New Hybrid System Integrating Concentrated Solar Flat Plate Collector with a Thermoelectric Generator System, Renewable Energy, pp. 1-38.
23. [23] Sun T., Zhou B., Zheng Q., Wang L., Jiang W., Snyder G.J., 2020. Stretchable Fabric Generates Electric Power from Woven Thermoelectric Fibers, Nature Communications, 11(1).
24. [24] Xu Q., Qu S., Ming C., QiuP., Yao Q., Zhu C., Wei T.-R., He J., Shi X., 2020. Conformal Organic-Inorganic Semiconductor Composites for Flexible Thermoelectrics, Energy &Environmental Science, 13, pp. 511-521.
25. [25] Yamankaradeniz N., Sahmerdan O., 2021. Energy, Exergy and Thermoeconomic Analysis of a Natural Gas Assissted Geothermal Central Heating System, Uludag University Journal of The Faculty of Engineering, 26, pp. 757-776.
26. [26] Nozariasbmarz A., Poudel B., Li W., Kang H.B., Zhu H., Priya S., 2020. Bismuth Telluride Thermoelectrics with 8% Module Efficiency for Waste Heat Recovery Application, iScience, 23(7), 101340.
27. [27] Hadjiat M.M, Mraoui A., Ouali S., Kuzgunkaya E.H., Salhi K., Ait Ouali A., Benaouda N., Imessad K., 2021. Assessment of geothermal energy use with thermoelectric generator for hydrogen production, ScienceDirect, pp. 1-11.
28. [28] Aliahmadi M., Moosavi A., Sadrhosseini H., 2021. Multi-Objective Optimization of Regenerative ORC System Integrated with Thermoelectric Generators for Low-Temperature Waste Heat Recovery. Energy Reports, 7, pp. 300–313.