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Author: search.filters.author.Roekrai, Nidchabendha Chandanachulaka

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    Proposed Model of STEM Associated with Social Issues: Case Study on Tapioca Drip Irrigation System
    (2021-01-01)
    Roekrai, Nidchabendha Chandanachulaka
    ;
    Khan-Ngern, Werachet
    The model of STEM associated with social issues is presented. Many projects are implemented with science, technology, mathematics, and engineering (STEM) but exclude the impact of long-term sustainability in both social and economic topics. The proposed model of STEM, which includes social matters, should be applied to be S+STEM. A case study of PV water pumps in the tapioca drip irrigation system has been provided to ensure the success of S+STEM. Although the design of irrigation systems requires STEM principles, it should be considered on issues related to society and communities, particularly about the cost and pollution that occur, which is a matter that the community values.
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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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    Energy Budget for Zero Energy Consumption Building of Thai Style Mediation based on PV System
    (2019-10-01)
    Varasundharosoth, Birasak
    ;
    Khan-Ngem, Werachet
    ;
    Svamivastu, Vacharee
    ;
    Srinil, Supot
    ;
    Roekrai, Nidchabendha Chandanachulaka
    This paper focuses on the concept of zero energy consumption building (ZECB). This paper has implemented the Thai mediation building, which designed and built using ZECB concept. The Thai mediation building requires zero energy from the grid because the main source of energy comes from the solar energy via photovoltaic system. Energy budget is used to calculate the relationship among energy generation, energy load, and energy storage, which is useful to construct any zero energy building.