Ratthasak Prommas

Rajamangala University of Technology Rattanakosin

A vortex tube that can be employed to lower the temperature of the inlet air of a 7.5 kW piston air compressor was designed and tested. The vortex tube reduces the air temperature by acting as a cold air generator that exchanges the temperature within the evaporator. The first step of the research method started with the design of nozzles of three...

Analysis of the energy and exergy for a naturally ventilated roof called a PV roof solar collector (PV-RSC) was the main purpose of this study, which is comprised of a PV panel (120 W) formed on an upper layer and an aluminum plate on the lower layer of the channel with a length and width of 1.2 and 0.7 m, respectively. Measurements of 30o and 15 c...

This study seeks to explain the use of low pressure inlet air to serve as a cooling agent to lower the discharge temperature of hot air by employing a vortex tube which has a snail nozzle designed specifically to achieve this objective. A series of tests were performed using various snail nozzles with entries of (n) 4-8 at a pressures of 1, 2, and...

In this research study, the performance in battery running and charging of an original circuit design is compared with the performance between the developed DC-DC boost converter running and charging replication circuit design. Bedini generators are a kind of magnetic generator designed by John Bedini on the basis of zero point technology. The gene...

This research aims to study on the impact of temperature, reaction time and particle size of biomass on the property of calorific value in 3 types of raw biomass including palm branches, balm fibres and palm shell, and to forecast the calorific value equations to study the impacts of palm branch, palm fibre and palm shell's calorific values. The ex...

The aim of this paper is to propose the PV roof solar collector (PV-RSC) to investigate the natural convection heat transfer and estimated the convective heat transfer coefficient in the channel. The experimental set-up was composed of a PV panel on the upper layer and the lower layer is aluminum plate of the channel. The inclination angle and air...

The textile industry is a complicated manufacturing industry because it is a fragmented and heterogeneous sector dominated by Small and Medium Enterprises (SMEs). There are various energy-efficiency opportunities that exist in every textile plant. However, even cost-effective options often are not implemented in textile plants mostly because of lim...

The target of any load management is to maintain a constant level of load. The important benefits of load management are reduction in maximum demand, reduction in power loss, better equipment utilization and saving through reduced maximum demand charges. Load shifting, one of the simplest methods of load management, is to reduce customer demand dur...

The present paper reviews suitable MWs curing method and processes for rapid thermal curing application of concrete which could be implement in a reasonable way to improve the rate of strength development. It further provides a deeper understanding of concrete technology and proposes suitable points for future study. The first part describes the ne...

This paper is concerned with the energy and exergy analyses in the drying process of non-hygroscopic porous packed bed by combined multi-feed microwave-convective air and continuous belt system (CMCB). Most importantly, this work focused on the investigation of drying phenomena under industrialized microwave processing. In this analysis, the effect...

In this paper, the experimental validation of a combined mass and thermal model for a convective drying of multi-layered packed beds composed of glass beads, water and air is presented. The effects of the drying time, particle size and the layered structure on the overall drying kinetics are clarified in detail. Based on a completed model combining...

This paper is concerned with the investigation of the energy and exergy analyses in convective drying process of multi-layered porous media. The drying experiments were conducted to find the effects of multi-layered porous particle size and thermodynamics conditions on energy and exergy profiles. An energy analysis was performed to estimate the ene...

In this paper the energy and exergy analyses in drying process of porous media using hot air was investigated. Drying experiments were conducted to find the effects of particle size and thermodynamics conditions on energy and exergy profiles. An energy analyses was performed to estimate the energy utilization by applying the first law of thermodyna...