Results 21 to 30 of about 6,420 (72)

Adaptive neural network control of a centrifugal chiller system

International Journal of Air-Conditioning and Refrigeration
In this paper, a neuro-adaptive PI control strategy for a water-cooled centrifugal chiller system is developed, and its control performance is examined. The system model consists of a flooded evaporator, a flooded condenser, a centrifugal compressor, and
Songchun Li, M. Zaheeruddin
doaj   +1 more source

Study on various hot-gas defrosting configurations for CO2-NH3 cascade deep freezer

International Journal of Air-Conditioning and Refrigeration
Four hot-gas bypass defrosting configurations for CO2-NH3 cascade blast freezer for application in fish processing firm are numerically investigated.
B. S. Arun, George Ninan, S. Murali, Manoj Samuel, Sumit Kumar, S. Vaishak, Mani Sankar Dasgupta, Sarun Kumar Kochunni, Armin Hafner, Kristina Norne Widell   +9 more
doaj   +1 more source

Inverted fins for cooling of a non-uniformly heated domain [PDF]

Journal of Thermal Engineering, 2015
This paper shows that the peak temperature of a nonuniformly heated region can be decreased by embedding highconductivity tree-shaped inserts which is in contact with a heat sink from its stem. The volume fraction of the high-conductivity material is
Erdal Çetkin
doaj  

Study of developing a condensation heat transfer coefficient and pressure drop model for whole reduced pressure ranges

International Journal of Air-Conditioning and Refrigeration
This study involves the collection of data from 10 different articles to develop experimental-based models for predicting the condensation heat transfer and the frictional pressure drop.
Abiola Samuel Ajayi, Sugyeong Kim, Rin Yun   +2 more
doaj   +1 more source

Design and development of a dual-purpose air cooler for space cooling and fruit/vegetable preservation

International Journal of Air-Conditioning and Refrigeration
The authors have designed and developed a dual-purpose air cooler (DPAC) capable of both room cooling and refrigeration for storing fruits and vegetables.
Aneesh Somwanshi, Prabhat Ranjan Mishra, Y. Anupam Rao, Nitin Kalla   +3 more
doaj   +1 more source

Fluid and thermal flow in annular side of the double twisted helically coiled tubes heat exchangers under various configurations

International Journal of Air-Conditioning and Refrigeration
In the existing research, the fluid and thermal flow of different configurations of double-twisted, helically coiled tube heat exchangers (DTHCTHEs) was presented numerically. The design addresses the faults of a double-smooth helical tube heat exchanger,
Mahmoud Abdelmagied
doaj   +1 more source

Energy-efficient refrigeration cycle strategies for capacity improvement and humidity control in VRF systems

International Journal of Air-Conditioning and Refrigeration
The growing demand for energy-efficient and environmentally sustainable HVAC solutions in residential buildings has driven the adoption of Variable Refrigerant Flow (VRF) systems.
Atul M. Elgandelwar
doaj   +1 more source

Numerical analysis on heat transfer enhancement of Al2O3 and CuO-water nanofluids in annular curved tubes

International Journal of Air-Conditioning and Refrigeration
The present investigation presents numerically the thermo-hydraulic performance of annular curved tubes in the turbulent flow region. The three-dimensional (3D) computational fluid dynamic (CFD) model was developed by using a commercial ANSYS 14.5 ...
Mahmoud Abdelmagied
doaj   +1 more source

Intelligent optimal control of endoreversible single-effect HVAC-AR system using machine learning

International Journal of Air-Conditioning and Refrigeration
Optimal control of Heating, Ventilation, and Air Conditioning Absorption Refrigeration (HVAC-AR) systems based on Finite-Time Thermodynamics (FTT) represents a major challenge in modern engineering application.
A. F. I. Mamadou, M. O. K. Idrissou, S. A. O. Sanya, J. V. C. Vargas, A. R. Alexandra   +4 more
doaj   +1 more source

Advancements in thermoacoustic technology: a comprehensive review and analysis of recent research

International Journal of Air-Conditioning and Refrigeration
Thermoacoustic technology attracts significant attention from researchers due to its high reliability, environmentally friendly operation, and less maintenance.
Mahesh Krishna Gaikwad, Savita Shinde, Abhijit L. Dandavate, Mithul J. Naidu, Tushar A. Jadhav, Sachin Salunkhe, Robert Čep   +6 more
doaj   +1 more source