Nasruddin Nasruddin

University of Indonesia | UI · Department of Mechanical Engineering

The need for a sustainable energy transition towards clean, renewable sources has never been more urgent. This challenge is particularly acute in developing countries like Malawi, where a significant portion of the population lacks access to reliable electricity, hindering economic development and human well-being. In the rural areas in particular,...

In the HVAC system, the required energy consumption is very large so that energy saving processes are needed. One effective method in this energy saving process is the heat recovery process using a Heat Pipe Heat Exchanger. Various studies have been carried out regarding the application of HPHE in HVAC systems to reduce temperature and maintain air...

Energy consumption in buildings is a crucial concern globally, prompting researchers to explore innovative solutions to mitigate its impact. This study investigates the optimization of building envelopes and roof shading systems of existing buildings in Indonesia to realize notable energy savings. Multiple scenarios were explored, with modification...

The addition of nanoparticles to bio-lubricants enhances their thermal properties. However, the resulting instability in nanofluids, which contributes to increased friction, remains a common issue. The aggregation mechanism of nanoparticles in a base fluid has not been fully understood. This paper employs molecular dynamic simulation to predict the...

Hydrogen production through water splitting involves separating hydrogen and oxygen using different technologies. The copper-chloride (Cu-Cl) cyclic reaction is a promising method of hydrogen production due to its low operating temperature, which allows it to use low-grade waste heat from industries, leading to reduced heat discharge to the environ...

Introduction: While many national-level governments have worked to tighten atmospheric air quality standard, the Authors observe, Indoor Air Quality (IAQ) control as part of building-codes have remained understudied and not yet enforced in many national-level regulations. The COVID-19 pandemic seemed to trigger an immediate response worldwide for I...

In this study, the crashworthiness performance of a thin-walled square steel-tube structure with an elliptical crush initiator under impact loading was investigated. The effect of the height, width, and distance of the crush initiator from the top of the tube on the crashworthiness performance was analyzed using several numerical simulations using...

Carbon capture and storage (CCS) is considered as a solution for achieving CO2 emission reduction targets in Indonesia. On a commercial scale, geological carbon storage (GCS) systems have significant capital costs and energy penalties that the production of geothermal energy could somewhat compensate it. Coupling geothermal energy and geologic CO2...

CO2 gas is a greenhouse gas that causes global warming. Greenhouse gases are gases in the atmosphere that can absorb and reflect infrared radiation from the Earth's surface. Currently, the energy demand still depends on fossil fuels. On the other hand, CO2 emissions from burning fossil fuels continue to increase and contribute as greenhouse gases t...

The use of activated carbon as adsorbent for adsorbed natural gas (ANG) gives the possibility of using agricultural waste as precursor. A study invented extremely high specific surface area of bagasse-based activated carbon through dry chemical activation. This experiment tried to get the optimum adsorbent for commercial ANG, wherein specific surfa...

This study aims to compare energy consumption of clay brick, light brick, Styrofoam-based brick and ecobrick production as wall material. The increase of materials needed on construction development in Indonesia become one of the reasons why sustainable architecture through the renewable material needs to be further considered from the perspective...

Energy consumption in building has been increasing significantly due to higher demand on cooling system. It consumes a large share of total building energy usage. A proper operation control strategy for this system promises the large energy saving. This paper proposes the optimization of chilled water pump operation to improve the cooling system ef...

Isonicotinic acid is a pyridine carboxylic compound that can be used as a linker to construct coordination complexes. Adding isonicotinic acid (HIna) to the metal-organic framework (MOF) enhanced the MOF surface area, pore volume, and pore size and increased its catalytic activity. Ti3C2Tx MXene nanosheet with excellent metal conductivity was also...

Abtstract Significant focus has been placed on improving Indoor Air Quality (IAQ) due to the emergence of the large-scale severe acute respiratory syndrome (SARS) virus epidemic in the air conditioning system of buildings. There is also a need for an adequate air ventilation system that balances energy needs with air quality. This led to the discov...

PEMODELAN DINAMIK PENDINGINAN BAHAN BAKAR NUKLIR BEKAS REAKTOR RISET SECARA NATURAL KONVEKSI PADA PROTOTIPE DRY CASK STORAGE. Penelitian ini secara khusus bertujuan untuk menguji kelayakan desain dry cask storage dan secara umum memberikan solusi penyimpanan Bahan Bakar Nuklir Bekas (BBNB) di Indonesia. Karena keterbatasan ruang penyimpanan pada pe...

The outstanding properties of metal-organic frameworks (MOFs) have proven that this type of crystalline adsorbent has great potential in CO2 capture applications. Most of the MOF research studies on new functional MOFs are conducted to improve the performance of CO2 gas adsorption. Combined studies of material evaluation and process design on engin...

The aim of this study is to provide comprehensive and update information concerning the utilization of low- and medium-temperature geothermal resources in Indonesia. This study includes several utilization technologies and identifies opportunities, challenges, and issues. Furthermore, to emphasize the promising potency of these potentials by gainin...

The demand for bio-degradable lubricants is continuously increasing due to environmental concerns. One of the methods to achieve the bio-degradability property of lubricants is by using nanoparticles from bio-resources as additives in bio-degradable oils. Among the nanomaterials are nanofibers, cellulose, and graphene nanoplatelets. They can be mix...

The literature review discusses state-of-the-art studies regarding strategies for smoke control in high-rise buildings and provides a comparison of prescriptive rules used in several countries. The literature review was conducted on high-rise building safety methods and concerned literature regarding smoke control strategies. This study focused on...

A follow-up study on the use of ultrasonic sound for harvesting a mixed culture of microalgae from a small lake for biofuel feedstock has been carried out. Observations were made at the Agathis small lake of Universitas Indonesia during the rainy season. The aim of the study was to determine the microalgae community members in Agathis with the pote...

As a source for third-generation biofuel, microalgae can assist island countries to overcome their energy crisis. In this study, a novel photobioreactor having three segments is designed and Synechococcus HS-9 growth in the photobioreactors with and without a baffle is compared. The aims of this study are to investigate how the baffle influences bu...

The growth medium is one aspect that determines the production of algal biomass as a raw material for biofuels. Cultivation of Mastigocladus HS-46 in NPK medium with the addition of bean sprout extract has been done. In a previous study, Mastigocladus HS-46 could be grown in NPK medium. This study was aimed to determine biomass production of Mastig...

Wild mix-culture offers a more economically effective way of producing biofuel by the accessible sources of culture and requiring minimum treatment at the cost of producing less lipid than monoculture feedstock. Different growth condition may change the amount of lipid produced by cultures. This study aimed to find out what kind of microalgae gener...

In this paper, the dynamic model of a solar thermal system is presented. The model developed based on the first principle approach using mass and energy balances applied to the internal component of the solar thermal system. It accounted nonlinear dynamic behavior characteristic of systems temperature. The unknown parameter on the system determined...

To reduce electricity consumption, heating ventilation from the airconditioning sector focuses on developing alternative solution electrically-driven vapour-compression system. The liquid desiccant air-conditioning system represents energy efficiency. It is more environmentally friendly as an alternative technology for the dehumidification process,...

This study aimed to evaluate the pressure difference distribution across the escape stair in a 24-story stairwell. A large eddy simulation (LES) method was used to model the pressure in a stairwell model with a set of simulation parameters using FDS (Fire Dynamic Simulator) software. Two configurations of fans involved single injection, and multipl...

In this study, exergoeconomic analysis was carry out on a 21.6MW gas turbine power plant by using logbooks record Pekanbaru Unit. The exergy analysis was start to determine the exergy destruction of each component of the power plant based on the first and second laws of thermodynamics and in this study, exergy and economic analysis were combined an...

In this research, MXene (Ti3C2) nanoflakes are implanted for the first time with Palm oil methyl ester (POME) to improve the nanofluids (POME/MXene) thermo-physical properties. The preparation, characterization, thermal and rheological properties was evaluated. POME/MXene nanofluid was induced with five different concentrations (0.01, 0.03, 0.05, 0...

As tidal energy is progressively earning attention worldwide, there is a lot of existing research about the tidal current potency and the tidal turbine design. Especially on turbine design, existing studies deduced that a diffuser augmentation is a superior choice to increase the turbine performance. However, the research in finding the best diffus...

The industry requirement of separating gas mixtures via adsorption techniques is rapidly being imposed, as the adsorption method is regarded as superior in terms of thermodynamic efficiency and cost. Gas mixture adsorption investigations with metal-organic frameworks (MOFs) have been conducted both in experimental and molecular simulations. Molecul...

Carbon Capture and Storage (CCS) technology which has been widely used, such as CO2 absorption system, still has environmental and energy issues. Further investigations should be carried out by understanding the causes of inefficiency in the system. Exergy and exergoenvironmental analysis are the method to describe the associated of each component...

This research is aimed at studying the stability and tribology properties of the polyol ester oil- (POE-) based biolubricant mixed with various filler loadings from microparticle of TEMPO-oxidized bacterial cellulose (NDCt) as an additive and sorbitan monostearate (Span 60) as a surfactant. Morphology, rheology, and tribology tests were conducted....

Stanieria strain HS-48 from Ciater hot spring, Indonesia contains lipid content in the form of fatty acids that can be used as a raw material for biodiesel. Optimization of the growth medium was used to produce high contents of microalgal lipids. The growth medium in this study utilized NPK medium with the addition of variations in the concentratio...

The result from a multi-objective optimization on the outlet diffuser angle of the tidal turbine is presented with a focus on the turbine efficiency and cavitation. This study is the first to investigate the impact of the diffuser angle on the diffuser augmented tidal turbine in performance and cavitation inception. The 1/2 scale model was designed...

A correction to this paper has been published: https://doi.org/10.1007/s00773-021-00821-1

Renewable energy, such as geothermal, is very effective in reducing the effects of greenhouse gas emissions. Therefore, a geothermal-based multi-generation system can produce commodities for power, hydrogen, liquefied natural gas, cold energy recovery, cooling, and water desalination. Power the multigeneration, energy, and exergy analyses are condu...

Many researchers are analyzing microalgae as a fuel source due to their high potential. Since microalgae are grown on a narrow area of land and less water, microalgae can contain high lipids. Carbon dioxide, water, inorganic salts, temperature and degree of acidity (pH), and light intensity in photobioreactors affect microalgae growth. Microalgae S...

The cultivation of Chlorella DPK-01 in tubular photobioreactors (PBRs) with difference in time of audible sound exposure was done. The study aims to evaluate the effect of difference in time of audible sound exposure in tubular PBRs to the growth and lipid percentage of microalgae Chlorella DPK-01. This study was using three groups of Chlorella DPK...

The back end of the utilization of nuclear technology is safety and management of spent fuel, which is a key element contributing to the success of the nuclear power plant program. Indonesia’s National Nuclear Energy Agency resolved to establish an experimental power reactor, called RDE, as a nuclear power plant demo. The fuel of this reactor is si...

Metal-organic frameworks are believed to be one of the solutions in reducing CO 2 emissions. Ligand modification, which is one of the methods in optimizing the MOF structure, provides a good opportunity for the development of functional materials with better properties. Ligand functionality in gas separation is important because it provides an insi...

Low-grade heat is abundantly available below 100 °C, while industry mainly needs heat above 100 °C. Thus, the industry cannot directly utilize low-grade heat to save primary energy and emissions. Low-grade heat could be utilized by Adsorption Heat Transformers (AdHT); however, closed adsorption heat transformers to upgrade heat above 100 °C have on...

In this study, consolidated composite adsorbents comprising highly porous zeolite of type AQSOA-Z02 and two types of graphene nanoplatelets (GNPs), namely H25-GNPs and M25-GNPs, are developed to enhance the performance of a thermally powered adsorption heat pump. The thermophysical properties such as specific heat capacity, packing density, thermal...

This study aimed to evaluate the effect of sound wave exposure in different photoperiods on Synechococcus HS-9 cell density and lipid content using tubular photobioreactors (PBRs). In this study, nine PBRs were used: three PBRs were exposed to a sine wave of 279.9 Hz for three hours during the day (A), three PBRs were exposed to a sine wave of 279....

Information technology (IT) devices that are capable of transferring large data fast will generate more heat discharged into the data center room (DCR). As a result, energy consumption to cool DCR becomes higher. This research aims to study the simulation of airflow and temperature as an indicator of the quality of rack cooling performance in the A...

Ventilation is an important aspect to maintain good indoor air quality in a building. However, excessive ventilation causing high energy consumption of the HVAC system. The ASHRAE Standard provides a guideline to set the ventilation rate that depends on the occupants' number and space. Thus, quantification of the number of occupants is required to...

Low‐grade heat is abundantly available below 100 °C, while industry mainly needs heat above 100 °C. Thus, the industry cannot directly utilize low‐grade heat to save primary energy and emissions. Low‐grade heat could be utilized by Adsorption Heat Transformers (AdHT); however, closed adsorption heat transformers to upgrade heat above 100 °C have on...

Currently, Indonesia has only three nuclear research reactors. However, Indonesia is the world's fourth most populous country. Owing to the enormous size and rapid growth of the population and the limited availability of fossil fuel and renewable energy resources, the construction of new nuclear power plants (NPPs) has been considered. Because of t...