Zobrazeno 1 - 10
of 258
pro vyhledávání: '"Masafumi Hirota"'
Autor:
Thiri Shoon Wai, Naoki Maruyama, Napassawan Wongmongkol, Chatchawan Chaichana, Masafumi Hirota
Publikováno v:
Case Studies in Thermal Engineering, Vol 60, Iss , Pp 104816- (2024)
The objective of this study is to examine the localized air temperature profile and heat transfer performance of a serpentine copper tube heat exchanger. Particularly, the air temperature nearby the plants is controlled by the heat exchanger. The nov
Externí odkaz:
https://doaj.org/article/ad2c78971c394a6e9bbcda8fc521e9b0
Autor:
Smith Eiamsa-ard, Arnut Phila, Khwanchit Wongcharee, Monsak Pimsarn, Naoki Maruyama, Masafumi Hirota
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 525-532 (2023)
The influences of perforated-baffles on the local Nusselt number (Nu) and thermo-hydraulic behaviors were comprehensively studied using thermochromic liquid crystal sheet. The perforated-baffles were designed in two forms: perforated-baffle (PB) and
Externí odkaz:
https://doaj.org/article/0b7f63a9b7f54b16b9c986bb572d1e99
Autor:
Boonsong Samutpraphut, Smith Eiamsa-ard, Varesa Chuwattanakul, Chinaruk Thianpong, Naoki Maruyama, Masafumi Hirota
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 696-703 (2023)
This article employs sawtooth twisted tapes to generate swirling flow and interrupted flowing disturbance in order to increase the level of heat transfer rate. The influences of the sawtooth twisted tape (S-TT) on enhanced heat transfer rate, frictio
Externí odkaz:
https://doaj.org/article/4e8c3d83470b4222888160a842e20133
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 653-661 (2023)
Central air-conditioners are used to control environmental conditions inside plant factory. However, if the plant factory is large, there is a high demand for air-conditioner system. The main objective of this study was to control the local air tempe
Externí odkaz:
https://doaj.org/article/582712939cf946e88a961445f812506b
Autor:
Smith Eiamsa-ard, Somchai Sripattanapipat, Anucha Saysroy, Pongjet Promvonge, Naoki Maruyama, Masafumi Hirota
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 420-426 (2022)
The current paper reports the prediction of heat transfer performance of a channel with a modified perforated-baffle in a square wings (SW-PB) form. Numerical results include flow/temperature field, local heat transfer distribution, and thermal perfo
Externí odkaz:
https://doaj.org/article/369a223fe3524d958ea0713913090f56
Autor:
Arnut Phila, Warin Keaitnukul, Smith Eiamsa-ard, Paisarn Naphon, Naoki Maruyama, Masafumi Hirota, Varesa Chuwattanakul
Publikováno v:
Case Studies in Thermal Engineering, Vol 47, Iss , Pp 103070- (2023)
The proper designs of modified heat transfer surfaces or turbulence enhancement inserts for heat transfer augmentation are extremely important for improving overall aerothermal performances relating to the energy-saving capabilities of thermal system
Externí odkaz:
https://doaj.org/article/00a3047642d14072a77a505893ac9d03
Autor:
Pongjet Promvonge, Arnut Phila, Varesa Chuwattanakul, Suriya Chokphoemphun, Smith Eiamsa-ard, Naoki Maruyama, Masafumi Hirota
Publikováno v:
Case Studies in Thermal Engineering, Vol 42, Iss , Pp 102754- (2023)
In this current work, the effect of utilizing arc-shaped twisted-baffles (T-ABs) in a rectangular air channel on thermal performance factor (TPF) has been experimentally studied. In these experiments, the influence of the changes in parameters such a
Externí odkaz:
https://doaj.org/article/022b928adee74f74be5cb133d0e4f1d3
Autor:
Prachya Samruaisin, Rangsan Maza, Chinaruk Thianpong, Varesa Chuwattanakul, Naoki Maruyama, Masafumi Hirota, Smith Eiamsa-ard
Publikováno v:
Energies, Vol 16, Iss 13, p 5237 (2023)
The influences of V-shaped delta-wing baffles on the thermohydraulic performance characteristics in a round tube were experimentally tested. The V-shaped delta-wing baffles having a set number of wings (N = 4, 6, and 8) were comparatively tested. The
Externí odkaz:
https://doaj.org/article/4e2e7197f3814ae2b9ac3966535a6d2d
Publikováno v:
Case Studies in Thermal Engineering, Vol 33, Iss , Pp 101945- (2022)
This study elucidated the effects of passive solar greenhouses on strawberry cultivation in temperate areas. The energy required to heat the greenhouse was calculated. Furthermore, the results of a field test performed in a temperate area in central
Externí odkaz:
https://doaj.org/article/7cadd392b7e34c198a04858e6b54415d
Autor:
Pasu Poonpakdee, Boonsong Samutpraphut, Chinaruk Thianpong, Suriya Chokphoemphun, Smith Eiamsa-ard, Naoki Maruyama, Masafumi Hirota
Publikováno v:
Energies, Vol 15, Iss 23, p 8855 (2022)
This experimental study aimed to intensify the aerothermal performance index (API) in a round tube heat exchanger employing twisted tapes in rib and sawtooth forms (TTRSs) as swirl/vortex flow generators. The TTRSs have a constant twist ratio of 3.0,
Externí odkaz:
https://doaj.org/article/a6bf694cdea9437d93b4d531c67d6822