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Takayuki Kajikawa - One of the best experts on this subject based on the ideXlab platform.

  • Status and future prospects on the development of Thermoelectric Power Generation systems utilizing combustion heat from municipal solid waste
    XVI ICT '97. Proceedings ICT'97. 16th International Conference on Thermoelectrics (Cat. No.97TH8291), 1997
    Co-Authors: Takayuki Kajikawa
    Abstract:

    The characteristics of combustion heat from the municipal solid waste are fitted for a large-scale application of Thermoelectric Power Generation potentially. The status and future prospects of Thermoelectric Power Generation systems to recover electricity from this heat source in Japan are reviewed and discussed. Experimental results on three different types of small-scale (500 W class) Thermoelectric Power Generation systems installed in the real municipal solid waste processing systems to demonstrate the technological feasibility and to extract the technological problems are briefly introduced. The conceptual designs of a small scale system for the next phase of the R&D program are presented. From the view point of large-scale realization the Thermoelectric material and modules configurations required for this application are also discussed. A case study on the marginal cost estimation shows the cost reduction to be less than 0.4-0.5 Million Yen/kW in order to make a profit on this system.

  • Thermoelectric Power Generation systems recovering heat from combustible solid waste in Japan
    Fifteenth International Conference on Thermoelectrics. Proceedings ICT '96, 1996
    Co-Authors: Takayuki Kajikawa
    Abstract:

    The status and future prospects on the development of Thermoelectric Power Generation systems utilizing heat from the municipal solid waste in Japan are reviewed in this paper. Two ongoing research and development programs related to this application in Japan are briefly introduced. The characteristics of heat from the solid waste processing system lead to the peculiar concept of Thermoelectric Power Generation system. The theoretical and experimental studies including small scale onsite experiment are shown to discuss several technological problems and the guideline for the development of such systems.

  • Development of Thermoelectric Power Generation system utilizing heat of combustible solid waste
    AIP Conference Proceedings, 1994
    Co-Authors: Takayuki Kajikawa, Makoto Ito, Izumi Katsube, Eiichi Shibuya
    Abstract:

    The paper presents the development of Thermoelectric Power Generation system utilizing heat of municipal solid waste. The systematic classification and design guideline are proposed in consideration of the characteristics of solid waste processing system. The conceptual design of Thermoelectric Power Generation system is carried out for a typical middle scale incinerator system (200 ton/day) by the local model. Totally the recovered electricity is 926.5 kWe by 445 units (569,600 couples). In order to achieve detailed design, one dimensional steady state model taking account of temperature dependency of the heat transfer performance and Thermoelectric properties is developed. Moreover, small scale on‐site experiment on 60 W class module installed in the real incinerator is carried out to extract various levels of technological problems. In parallel with the system development, high temperature Thermoelectric elements such as Mn‐Si and so on are developed aiming the optimization of ternary compound and high performance due to controlled fine‐grain boundary effect. The manganese silicide made by shrinking‐rate controlled sintering method performs 5 (μW/cm K 2) in Power factor at 800 K.

Jongjit Hirunlabh - One of the best experts on this subject based on the ideXlab platform.

  • Experimental Investigation of Thermoelectric Power Generation Using Radiative Heat Exchange
    Advanced Materials Research, 2014
    Co-Authors: Niran Watcharodom, Withaya Puangsombut, Narong Vatcharasatien, Joseph Khedari, Jongjit Hirunlabh
    Abstract:

    This paper reports experimental investigation of a new concept of waste heat recovery for Thermoelectric Power Generation using Radiative heat exchange principle (TERX). To this end a small scale experimental setup was considered; it was composed of a heated plate, an absorber plate, Thermoelectric modules and water cooled heat sink. The dimensions of absorber and heated plates were 0.2 m width and 0.3 m length. The air gap space between the two plates could be adjusted. Ten Thermoelectric modules were connected in series parallel (5x2). Tests were made for different air gap spaces and fixed water flow rate (2L/min). A constant electric current (200W) was supplied to the heater of hot plate. Data collected included temperature at various positions and the electrical Power generated. Experimental investigation confirmed that using radiative heat exchange principle could be considered for TE waste heat Power Generation. Increasing air gap decreased the electrical Power generated as less radiative heat is absorbed by the Thermoelectric modules. Under test conditions, the maximum measured electrical Power is 0.3132 W at 0.5 cm of air gap, the corresponding temperature difference between the hot and cool sides of Thermoelectric modules was about 35oC. Due to its simplicity of installation as no there is no need for direct contact between the Thermoelectric Generation set and the source of heat, the proposed concept offers a new alternative for waste heat recovery.

  • Design and analysis of solar Thermoelectric Power Generation system
    International Journal of Sustainable Energy, 2005
    Co-Authors: N. Vatcharasathien, Joseph Khedari, Jongjit Hirunlabh, Michel Daguenet
    Abstract:

    This article reports on the design and performance analysis of a solar Thermoelectric Power Generation plant (STEPG). The system considers both truncated compound parabolic collectors (CPCs) with a flat receiver and conventional flat-plate collectors, Thermoelectric (TE) cooling and Power generator modules and appropriate connecting pipes and control devices. The design tool uses TRNSYS IIsibat-15 program with a new component we developed for the TE modules. The main input data of the system are the specifications of TE module, the maximum hot side temperature of TE modules, and the desired Power output. Examples of the design using truncated CPC and flat-plate collectors are reported and discussed for various slope angle and half-acceptance angle of CPC. To minimize system cost, seasonal adjustment of the slope angle between 0° and 30° was considered, which could give relatively high Power output under Bangkok ambient condition. Two small-scale STEPGs were built. One of them uses electrical heater, where...

  • Solar-biomass Thermoelectric Power Generation simulation
    Proceedings ICT'03. 22nd International Conference on Thermoelectrics (IEEE Cat. No.03TH8726), 2003
    Co-Authors: J. Eakburanawat, Joseph Khedari, Jongjit Hirunlabh, Somchai Maneewan, Michel Daguenet, S. Teekasap
    Abstract:

    This paper presents simulation results of a new hybrid Thermoelectric Power generator combining solar energy and biomass energy. The system considered is composed of a domestic cook-stove that uses charcoal or wood as fuel, Thermoelectric (TE) modules, a photovoltaic panel and control devices. Simulations were performed using TRNSYS with Ilsibat program with a new component we developed for Thermoelectric modules. Different TE input data could be used corresponding to different manufacturers (China, USA). Temperature profile of cook-stove was extracted from the experiment and the minimum of average 5 years (1998-2002, Bangkok) hourly solar radiation and ambient temperature were used. The operating conditions of the system are as follows: hot side temperature of Thermoelectric modules of about 250/spl deg/C and Power output of 100 W that represents a minimum domestic requirement of a small family. By considering equal Power generated by the TE modules and the PV panel, the maximum Power output that could be produced by this hybrid TE-PV cook-stove, on the worst-month (September) is 55.38 W. The TRNSYS software and the developed Thermoelectric component is therefore an extremely useful tool for the design of solar-biomass Thermoelectric Power Generation of whatever size.

  • the potential of waste heat Thermoelectric Power Generation from diesel cycle and gas turbine coGeneration plants
    Energy Sources, 2001
    Co-Authors: Panya Yodovard, Joseph Khedari, Jongjit Hirunlabh
    Abstract:

    This study assesses the potential of waste heat Thermoelectric Power Generation for diesel cycle and gas turbine coGeneration in the manufacturing industrial sector in Thailand. To this end, data from more than 27,000 factories from different sectors, namely, chemical product, food processing, oil refining, palm oil mills, petrochemical, pulp and paper rice mills, sugar mills, and textiles, were used. The potential of waste heat Thermoelectric Power generators was analyzed using an annual cost method based on stack exhaust from a coGeneration system for different operation hours, system life spans, bank interest rates, system prices, maintenance costs, depreciation, internal rates of return, and electricity buy back rates sold to the grid line. Gas turbine and diesel cycle coGeneration systems produced electricity estimated at 33% and 40% of fuel inmput, respectively. The useful waste heat from stack exhaust of coGeneration systems was estimated at 20% for gas turbine and 10% for diesel cycle. The corresp...

  • A computer tool for designing solar-Thermoelectric Power Generation system
    Proceedings ICT'03. 22nd International Conference on Thermoelectrics (IEEE Cat. No.03TH8726), 1
    Co-Authors: N. Vatcharasathien, Joseph Khedari, Jongjit Hirunlabh, Michel Daguenet
    Abstract:

    This paper presents a computer tool to design solar-Thermoelectric Power Generation plant. The system is composed of truncated compound parabolic collectors (CPC) with a flat receiver, flat plate collectors, Thermoelectric modules and appropriate connecting pipes and control devices. The design tool uses TRNSYS with Ilsibat program with a new component we developed for the Thermoelectric modules. The main input data of the system are the specification of TE modules, hot side temperature of Thermoelectric modules, and the desired Power output. An example of the design using a truncated compound parabolic collectors and flat plate collectors is reported and discussed for various slope angle and the half-acceptance angle of CPC. To minimize system cost, seasonal adjustment of the slope angle between 0/spl deg/ and 30/spl deg/ can give relatively high Power output using Bangkok ambient condition. Based on simulation output, 500 W solar-Thermoelectric Power generator was designed. Measured data showed reasonable agreement with the model outputs. Therefore, the TRNSYS software and the developed Thermoelectric component offers an extremely Powerful tool for the design and performance analysis of solar Thermoelectric Power Generation plant.

Jiangming Kan - One of the best experts on this subject based on the ideXlab platform.

  • Study on field experiments of forest soil Thermoelectric Power Generation devices.
    PLOS ONE, 2019
    Co-Authors: Yongsheng Huang, Jiangming Kan
    Abstract:

    As a new strategy to Power forest wireless sensors in remote areas, an environmental microenergy collection device has been improved, and field experiments were carried out under natural conditions for the first time. The Thermoelectric Power Generation devices used a gravity-assisted heat pipe to transmit heat from shallow soil to ground level, and a Thermoelectric generator (TEG) was employed to generate electric Power from the temperature difference between soil and air. Over the 6-month experimental period at two natural sites, approximately 128.74 J of energy could be harvested in a single day, and 5 209.92 J of energy could be harvested in a Generation cycle. The results showed the feasibility of using this green energy to Power wireless sensors in remote forests or other environments, This work is relevant to the current acute energy shortages and environmental pollution problems.

  • Theoretical and experimental analysis of a solar Thermoelectric Power Generation device based on gravity-assisted heat pipes and solar irradiation
    Energy Conversion and Management, 2016
    Co-Authors: Zhe Zhang, Jiangming Kan
    Abstract:

    Abstract Solar Thermoelectric Power Generation has been widely used to solve the Power supply limitation issue for low-Power wireless sensors because of its light weight, high reliability, low cost, lack of noise, and environmental friendliness. A solar Thermoelectric Power Generation system based on gravity-assisted heat pipes and solar radiation is devised in this paper, and its behavior is continuously measured in realistic outdoor circumstances. The effects of key parameters, including solar luminous flux, load resistance, a proportional coefficient, and a relative Seebeck coefficient, are analyzed. Related experimental results show that the device can output a voltage of 1057 mV and an electrical current of 343 mA, resulting in an output Power of 362.56 mW. With a stable external energy conversion module under aluminous flux of 7.81 × 104 lx, the voltage converted from the nature solar radiation is boosted from 1057 mV to 4.40 V, which meets the rated operating voltage of low Power consumption components, such as low-Power wireless sensors and ZigBee modules. An economic analysis of the system shows that the solar Thermoelectric Power Generation device is both economically and technically competitive when it is applied in a low-voltage wireless sensor network.

Ashwin Date - One of the best experts on this subject based on the ideXlab platform.

  • Progress of Thermoelectric Power Generation systems: Prospect for small to medium scale Power Generation
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: Ashwin Date, Chris Dixon
    Abstract:

    Abstract This paper presents the progress of Thermoelectric Power Generation systems and their potential to be incorporated in small to medium scale Power Generation systems with encouraging prospects of grid connection. To begin with this paper demonstrates the urgency and necessity of finding an alternative source of energy to replace the existing inclination of human race towards fossil fuels. Following this the potential of Thermoelectric technology to be used with alternate energy sources is demonstrated. Development in the field of Thermoelectric materials with high Seebeck coefficients, suitable for Power Generation modules is discussed in the literature review. New advanced materials and innovative techniques to utilise renewable energy for Power Generation using Thermoelectric generators are described in the main body of this paper. Various active and passive cooling systems with Thermoelectric Power Generation modules to enhance the performance of the system are illustrated in the paper. A brief literature survey is presented at the end about grid connection for Thermoelectric generators .These advances in Thermoelectric technology, places it in a comfortable position to become a major contributor to renewable and sustainable electricity production in the future, essentially replacing fossil fuels.

Bimrew Tamrat Admasu - One of the best experts on this subject based on the ideXlab platform.

  • Effects of Non-Uniform Hot Junction Temperature Distribution on the Outputs of Thermoelectric Power Generation System
    Applied Mechanics and Materials, 2013
    Co-Authors: Bimrew Tamrat Admasu, Xiaobing Luo, Jia Wei Yao, Ting Zhen Ming
    Abstract:

    Abstract. Besides the material property and dimensional optimization of the Thermoelectric module, temperature distribution uniformity on the hot junction of the module surface highly affects the outputs of the Thermoelectric Power Generation system. This paper reports the findings on the effects of non-uniform input temperature distribution on the performance of Thermoelectric Power Generation system. To assure the investigation, heat transfer model and finite element formulation of Thermoelectric module having non-linear material property have been developed. In addition to the experimental data from a real Thermoelectric device, Thermoelectric Power Generation system modeling and simulation using finite element packaging ANSYS software was carried out. For the simulation, temperature dependent Thermoelectric material properties such as the Seebeck coefficient, thermal and electrical conductivity have been considered. The experimental and simulation results indicate that keeping the temperature distribution uniform on the hot junction of the Thermoelectric module results higher efficiency, higher Power, voltage and current outputs than the non-uniform temperature distribution.

  • Effects of temperature non-uniformity over the heat spreader on the outputs of Thermoelectric Power Generation system
    Energy Conversion and Management, 2013
    Co-Authors: Bimrew Tamrat Admasu, Xiaobing Luo, Jia Wei Yao
    Abstract:

    Thermal energy from different sources can be converted into electricity by using Thermoelectric modules. Controlling the temperature uniformity over the heat spreader of the Thermoelectric Power Generation system is a critical issue for its performance. In this study, we compared the outputs of the Thermoelectric Power Generation system which has uniform temperature distribution with that without uniform temperature distribution over the heat spreader. The model in which Thermoelectric materials are temperature related was developed. Finite element based software with thermal–electrical multi-physics coupled was employed to simulate the system. In addition to the simulation, we performed experimental activities. In the simulation and experimental activities, electric current output, Power output, open circuit voltage and the efficiency of the system in the cases of uniform and non-uniform temperature distribution over the heat spreader are evaluated. The simulation and experimental results show that the uniform temperature distribution over the heat spreader gives better outputs than the non-uniform temperature distribution.

  • Effects of thermal contact resistance and thomson heating on the outputs of solar Thermoelectric Power Generation system
    2013 14th International Conference on Electronic Packaging Technology, 2013
    Co-Authors: Bimrew Tamrat Admasu, Xiaobing Luo
    Abstract:

    We establish a mathematical model with numerical example of solar Thermoelectric Power Generation system. The components' thermal resistances, thermal contact resistances at the interface between components and Thomson heating are all considered in the model. The inner effects include Seebeck effect, Peltier heating effect, Thomson effect and Joule effect. The Thermoelectric material properties are all temperature dependent. From the mathematical model, the junction temperatures, the rate of heat flow at the junctions, the Power output from the system and thermal efficiency of the system are formulated. Applying the model to a practical example in engineering, the system is evaluated to identify the effect of thermal contact resistance between components and the Thomson effect. The results indicate that neglecting thermal contact resistance between components and Thomson effect highly influences on the outputs of the system.