Alison Subiantoro
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View article: Stability evaluation of a grid-tied hybrid wind/PV farm joined with a hybrid energy-storage system
Stability evaluation of a grid-tied hybrid wind/PV farm joined with a hybrid energy-storage system Open
This paper presents the stability-evaluation outcomes of a multimachine power system (MMPS) connected with a large-scale hybrid wind farm (WF) and photovoltaic (PV) farm or hybrid wind/PV farm (HWPF) and a hybrid energy-storage system (HES…
View article: Impact of the Lubricant on a Modified Revolving Vane Expander (M-RVE) in an Organic Rankine Cycle System
Impact of the Lubricant on a Modified Revolving Vane Expander (M-RVE) in an Organic Rankine Cycle System Open
The expansion device is the critical component of micro-to-small scale organic Rankine cycle (ORC) systems, substantially affecting system efficiency and cost. Low isentropic efficiency and lubrication requirements are the main issues asso…
View article: Sustainable cooling strategies to minimize water consumption in a greenhouse in a hot arid region
Sustainable cooling strategies to minimize water consumption in a greenhouse in a hot arid region Open
Evaporative cooling systems are the currently used technology for providing cooling to greenhouses in arid regions where typically the greenhouse is ventilated. However, they consume a large quantity of water to cool the air. A closed gree…
View article: Experimental investigation of a revolving vane expander in a micro-scale organic Rankine cycle system for low-grade waste heat recovery
Experimental investigation of a revolving vane expander in a micro-scale organic Rankine cycle system for low-grade waste heat recovery Open
Organic Rankine cycles (ORCs) are a reliable solution for power generation from low-temperature waste heat. While the ORC is a mature technology in medium to large scale applications, several challenges remain to be solved for its widespre…
View article: Performance of a four-intersecting-vane expander in a R134a refrigeration cycle
Performance of a four-intersecting-vane expander in a R134a refrigeration cycle Open
The use of an expander is a promising technique to improve the performance of vapor compression refrigeration systems, but its use in a system with HFC refrigerants has not been extensively explored. This paper studies the performance of a…
View article: Investigation of combination of a rotary vane expander and an expansion valve in a refrigeration system.
Investigation of combination of a rotary vane expander and an expansion valve in a refrigeration system. Open
© 2019 International Institute of Refrigeration. All rights reserved. Throttling loss is a major source of inefficiencies in a typical refrigeration system. Expanders have been proposed and studied to recover the expansion work previously.…
View article: Effects of Lubricating oil on the performance of a Four-Intersecting-Vane Rotary Expander
Effects of Lubricating oil on the performance of a Four-Intersecting-Vane Rotary Expander Open
Lubrication plays an important aspect in machinery. It seals internal leakage gaps, reduces friction and cools components. The present investigation is intended to test the effects of lubrication to an expander’s performance. Polyester lub…
View article: Reinforcement Learning Control for Vapor Compression Refrigeration Cycle
Reinforcement Learning Control for Vapor Compression Refrigeration Cycle Open
Vapor compression refrigeration cycles (VCRC) control optimization is an effective method to increase its' reliability and energy efficiency. In modern VCRC systems, the introduction of inverter compressors, electronic expansion valves, fa…
View article: Torque Characteristics of the Revolving Vane Air Expander
Torque Characteristics of the Revolving Vane Air Expander Open
The use of compressed air as an alternative source of clean energy requires an air expander to extract work. A new design, known as the revolving vane mechanism, has been proposed in an effort to develop high efficiency rotary machines. Th…
View article: Thermo-Economic Analysis of A Geothermal Binary Power Plant in Indonesia—A Pre-Feasibility Case Study of the Wayang Windu Site
Thermo-Economic Analysis of A Geothermal Binary Power Plant in Indonesia—A Pre-Feasibility Case Study of the Wayang Windu Site Open
Indonesia has a predicted geothermal potential of 29 GWe, which is the biggest in the world. With this potential, the government has the ambitious target to generate as much as 7 GWe of electricity in 2025 from geothermal energy. However, …
View article: Friction and leakage analysis of the blocker-type valve designed for a revolving vane expander
Friction and leakage analysis of the blocker-type valve designed for a revolving vane expander Open
Friction and leakage are two known issues that contribute to inefficiencies of rotary vane machines, and the Revolving Vane (RV) mechanism was introduced to reduce them. When used as an expander, a mechanism to determine the timing of the …
View article: A review on expanders and their performance in vapour compression refrigeration systems
A review on expanders and their performance in vapour compression refrigeration systems Open
This paper reviews progress reported in the open literature of the use of expanders to recover expansion power to improve the energy efficiency of vapour compression refrigeration systems. Pioneering works in the field are first discussed,…
View article: Municipal Waste Management Strategy Review and Waste-to-Energy Potentials in New Zealand
Municipal Waste Management Strategy Review and Waste-to-Energy Potentials in New Zealand Open
Municipal waste management and Waste-to-Energy (WtE) potentials in New Zealand are discussed. The existing main waste management strategy of New Zealand is to reduce, reuse and recycle waste. Most of the remaining waste is currently dispos…
View article: Mathematical modelling of the rotor-driven revolving vane compressor with fixed vane (RV-I) with consideration of the vane thickness
Mathematical modelling of the rotor-driven revolving vane compressor with fixed vane (RV-I) with consideration of the vane thickness Open
The rotor-driven revolving fixed vane (RV-I) compressor was introduced in 2008. It has been shown to exhibit superior mechanical performance as compared to conventional rotary compressors and the original revolving vane compressor design d…
View article: Development of a Rotary Vane Expander for an R-22 Heat Pump System
Development of a Rotary Vane Expander for an R-22 Heat Pump System Open
A traditional vapour compression refrigeration system consists of a compressor, a condenser, a throttling device and an evaporator. The typical throttling devices are capillary tube and expansion valves. Unfortunately, such devices waste e…
View article: Exergy Analysis of the Revolving Vane Compressed Air Engine
Exergy Analysis of the Revolving Vane Compressed Air Engine Open
Exergy analysis was applied to a revolving vane compressed air engine. The engine had a swept volume of 30 cm 3 . At the benchmark conditions, the suction pressure was 8 bar, the discharge pressure was 1 bar, and the operating speed was 3,…