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HVAC Systems Heat Recovery with Multi-Layered Oscillating Heat Pipes

., Dangeton, W., Soponronnarit, S. “Closed-ended oscillating heat pipe (CEOHP) air-preheater for energy thrift in a dryer”, Applied Energy 81, pp. 198 – 208, 2005 . DOI: 10.1016/j.apenergy.2004.06.003 [8] Mahajan, G., Thompson, S. M., Cho, H. “Energy and cost saving potential of oscillating heat pipes for waste heat recovery ventilation”, Energy Reports 3, pp. 46 – 53, 2017 . DOI:10.1016/j.egyr.2016.12.002 [9] Mahajan, G., Cho, H., Thompson, S. “Oscillating heat pipes for waste heat recovery in HVAC systems”, Proceedings of the 15th International Mechanical

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Possibility of heat recovery from gray water in residential building

Energy , vol. 101, 2013, p. 341-348. [4] Stec, A., Kordana, S., Słyś, D. Analysis the financial efficiency of use of water and energy saving systems in single-family homes. Journal of Cleaner Production , vol. 151, 2017, p.193-205. [5] McNabola, A., Shields, K. Efficient drain water heat recovery in horizontal domestic shower drains. Energy and Buildings , vol. 59, 2013, p.44-49. [6] Czarniecki, D., Pisarev, V., Dziopak, J., Słyś, D. Technical and economic analysis of the application of the wastewater heat recovery system in an apartment building

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Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship

References MAN B&W Diesel A/S.: Waste Heat Recovery Systems. Copenhagen Denmark, 2007. MAN B&W Diesel A/S.: Soot Deposits and Fires in Exhaust Gas Boilers. Copenhagen Denmark, 2004. MAN B&W Diesel A/S.: Waste Heat Recovery System-Green Ship Technology Seminar. p.1-13, Hainan, China, 2010. MAN B&W Diesel A/S.: Thermo Efficiency System for Reduction of Fuel Consumption and CO2 Emission. Copenhagen Denmark, 2007. WARTSILA

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Heat and Mass Transfer Processes in Scrubber of Flue Gas Heat Recovery Device

Heat and Mass Transfer Processes in Scrubber of Flue Gas Heat Recovery Device

The paper deals with the heat and mass transfer process research in a flue gas heat recovery device, where complicated cooling, evaporation and condensation processes are taking place simultaneously. The analogy between heat and mass transfer is used during the process of analysis. In order to prepare a detailed process analysis based on heat and mass process descriptive equations, as well as the correlation for wet gas parameter calculation, software in the Microsoft Office Excel environment is being developed.

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The Impact of Parallel Energy Consumption on the District Heating Networks

. Methodology for evaluating the transition process dynamics towards 4th generation district heating networks. Energy 2018:150(1):253–261. doi:10.1016/j.energy.2018.02.123 [19] Gustafsson M., Gustafsson M. S., Myhren J. A., Bales C., Holmberg S. Techno-economic analysis of energy renovation measures for a district heated multi-family house. Applied Energ y 2016:177(1):108–116. doi:10.1016/j.apenergy.2016.05.104 [20] Thalfeldt M., Kurnitski J., Latosov E. Exhaust air heat pump connection schemes and balanced heat recovery ventilation effect on district heat

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Investigation of the Combustion Processes in the Gas Turbine Module of an FPSO Operating on Associated Gas Conversion Products

of the Ship Propulsion System with Thermochemical Recuperation of Waste Heat . Journal of Marine Science and Application, Vol. 17, No.1, 122-130. 24. Cherednichenko O. (2015): Analysis of Efficiency of Diesel-Gas Turbine Power Plant with Thermo-Chemical Heat Recovery. MOTROL: Commission of Motorization and Energetics in Agriculture. Vol.17, No. 2, 25-28. 25. Cherednichenko O. (2019): Efficiency Analysis of Methanol Usage for Marine Turbine Power Plant Operation Based on Waste Heat Chemical Regeneration. Problemele Energeticii Regionale, No.1, 102

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Thermodynamic, Environmental and Economic Simulation of an Organic Rankine Cycle (ORC) for Waste Heat Recovery: Terceira Island Case Study

. Energy 2019:173:133–139. doi:10.1016/j.energy.2019.02.073 [7] van Leeuwen K., et al. The energy & raw materials factory: Role and potential contribution to the circular economy of the Netherlands. Environmental Management 2018:61(5):786–795. doi:10.1007/s00267-018-0995-8 [8] Lecompte S., et al. Case Study of an Organic Rankine Cycle (ORC) for Waste Heat Recovery from an Electric Arc Furnace (EAF). Energies 2017:10(5):649. doi:10.3390/en10050649 [9] Cimdina G., et al. Methodologies used for scaling-up from a single energy production unit to state

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Kitchen and Garden Waste as a Source of Heat for Greenhouses

, M., M., Aber, J., D., Rynk, R. (2016). Heat Recovery from Composting: A Comprehensive Review of System Design, Recovery Rate, and Utilization. Compost Science & Utilization, In Press, ISSN: 1065-657X (Print) 2326-2397 (Online). DOI: 10.1080/1065657X.2016.1233082. Suthar, S., Singh, P. (2015). Household solid waste generation and composition in different family size and socio-economic groups: A case study. Sustainable Cities and Society, 14 , 56-63. Talaiekhozani, A., Bagheri, M., Najafabadi, N., & Borna, E. (2016). Effect of nearly one hundred

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Energy efficiency solutions for driers used in the glass manufacturing and processing industry

Abstract

Energy conservation is relevant to increasing efficiency in energy projects, by saving energy, by its’ rational use or by switching to other forms of energy. The goal is to secure energy supply on short and long term, while increasing efficiency. These are enforced by evaluating the companies’ energy status, by monitoring and adjusting energy consumption and organising a coherent energy management. The manufacturing process is described, starting from the state and properties of the raw material and ending with the glass drying technological processes involved. Raw materials are selected considering technological and economic criteria. Manufacturing is treated as a two-stage process, consisting of the logistic, preparation aspect of unloading, transporting, storing materials and the manufacturing process itself, by which the glass is sifted, shredded, deferrized and dried. The interest of analyzing the latter is justified by the fact that it has a big impact on the final energy consumption values, hence, in order to improve the general performance, the driers’ energy losses are to be reduced. Technological, energy and management solutions are stated to meet this problem. In the present paper, the emphasis is on the energy perspective of enhancing the overall efficiency. The case study stresses the effects of heat recovery over the efficiency of a glass drier. Audits are conducted, both before and after its’ implementation, to punctually observe the balance between the entering and exiting heat in the drying process. The reduction in fuel consumption and the increase in thermal performance and fuel usage performances reveal the importance of using all available exiting heat from processes. Technical faults, either in exploitation or in management, lead to additional expenses. Improving them is in congruence with the energy conservation concept and is in accordance with the Energy Efficiency Improvement Program for industrial facilities.

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The Assessment of Surface Layers Texture of the Fouling Gathered on the Heat Transfer Surfaces within Regenerative Feedwater Heat Exchangers

Abstract

The fouling presence on the heat transfer surfaces, both on the waterside and the steam side of the steam power plants heat recovery exchangers usually leads to the loss of their heat transfer capacities. This loss appears owing to the high value of heat resistance of fouling. Furthermore, these deposits are most often formed with irregularities in the surface layers. These textures are usually characterized by a varied, often stochastic and difficult to define, geometric structures. The most common measure of their inequalities is the roughness parameter describing the surface geometry. The fouling surface layer texture can, on one hand, cause enhancement of the heat transfer process, but on the other hand, it may contribute to an additional increase in thermal degradation of the heat exchanger. Many experimental studies have shown that the greater the unevenness of the heat transfer surface on the waterside of a given heat transfer device, the smaller increase in the thermal resistance of the impurities over time, thereby increasing the amount of heat transferred. It should be emphasized, however, that the rise in roughness results in an increase in the heat transfer coefficient, while simultaneously intensifying the flow resistance of the working medium. Taking into account the heat transfer surface by steam side, the increase in the roughness promotes the formation of a thicker condensate layer, thus impairing the condensate drainage organization. It can be explained by the fact that deposits settle in a sort of quasi-rib effect, although with undefined ribbed grid, it may lead to the overflow of inter-finned passages. The article shows the previously mentioned phenomena and also presents the descriptive quantities for the fouling surface layer texture, based on the results of the author’s own experimental research.

Open access