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    Energy, Economic, and Environmental (3E) Analysis of PV Water Pump: Case Study of the Tapioca Drip Irrigation System
    (2021-01-01)
    Roekrai, Nidchabendha Chandanachulaka
    ;
    Khan-Ngern, Werachet
    This paper presents energy, economic, and environmental analysis of the PV Water Pump. A case study of the tapioca drip irrigation system in Kamphaeng Phet Province in Thailand is provided. The conditions of this tapiocafield are 1) no electricity and 2) thefield owners are not willing to pay for the electricity cost; therefore, it is crucial to decide whether PV connected with α centrifugal pump is suitable for tapioca drip irrigation system. Each parameter in this 3E analysis has been evaluated to preset the most suitable PV pumping system.
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    Energy, Economic, and Environmental (3E) Analysis of Zero Energy Consumption Building: A Case Study of Thai Style Mediation House
    (2020-10-14)
    Roekrai, Nidchabendha Chandanachulaka
    ;
    Khan-Ngern, Werachet
    This paper presents Energy, Economic, and Environmental (3E) analysis of Zero Energy Consumption Building (ZECB) concept. A case study of Thai mediation house which constructed following ZECB concept is provided. The conditions of this off-grid PV house are daily load demand is approximately 4.605 kWh and this house must be able to use the energy for 2 days without the sunlight. Each parameter in 3E analysis is used to evaluate the possibility of ZECB.
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    The study of economic effects when different distributed generators (DG) connected to a distribution system
    (2018-06-25)
    Chiradeja, Pathomthat
    ;
    Yoomak, Suntiti
    ;
    Ngaopitakkul, Atthapol
    This paper presents the study and analysis of an economic impact on distributed generator (DG) installation connected to the 22-kV distribution system of the Thanyaburi substation of Provincial Electricity Authority (PEA), Thailand, which covers 8.18 km of distribution line distance and has four BUS connected with DG. In order to determine the optimal size and type of DG, the DIgSILENT PowerFactory software is used to simulate the DG connected to the distribution system. The DG used in case studies has three types: solar power, wind power, and biomass; each type has a size varied from 1-8 MW. For economic evaluation, the indices of discount payback period (DPB) and internal rate of return (IRR) are employed. The results indicate that solar power and wind power which are high power generation can be more achievable economic performance than low power one due to better the ratio between investment costs and megawatts. However, the biomass distributed generation of 1 MW gives the best DPB (4.78 years) and IRR (25.27%), as well as more efficient in electrical generation than the solar power and wind power.
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    The result analysis of economic distribution transformer design in Thailand
    (2002-12-01)
    Suechoey, Boonlert
    ;
    Bunjongjit, Sulee
    ;
    Kando, M.
    Thailand's medium-sized industries, with demands rating from 30 - 999 kW., currently need to develop distribution transformers that provide the highest efficiency regarding the transformer low losses and lowest costs. This is partly because the energy authorities that provide the electricity have fixed the transformer losses. In this paper, the result analysis of transformer design is presented. The considered factor include efficiency, losses throughout the transformer costs. The analysis includes an example of calculation and selection.