A solar-assisted hybrid air-cooled adiabatic absorption and vapor compression air conditioning system

2021 ◽  
Vol 250 ◽  
pp. 114926
Author(s):  
Erjian Chen ◽  
Jinfeng Chen ◽  
Teng Jia ◽  
Yao Zhao ◽  
Yanjun Dai
Keyword(s):  
Air Conditioning ◽  
Vapor Compression ◽  
Air Conditioning System

Rechargeable Personal Air Conditioning Device

2016 ◽  
Author(s):  
Yilin Du ◽  
Jan Muehlbauer ◽  
Jiazhen Ling ◽  
Vikrant Aute ◽  
Yunho Hwang ◽  
...  
Keyword(s):  
Air Conditioning ◽  
Cooling System ◽  
Cooling Capacity ◽  
Comfort Level ◽  
Vapor Compression ◽  
Air Conditioning System ◽  
System A ◽  
Single Person ◽  
Vapor Compression Cycle ◽  
Compression Cycle

A rechargeable personal air-conditioning (RPAC) device was developed to provide an improved thermal comfort level for individuals in inadequately cooled environments. This device is a battery powered air-conditioning system with the phase change material (PCM) for heat storage. The condenser heat is stored in the PCM during the cooling operation and is discharged while the battery is charged by using the vapor compression cycle as a thermosiphon loop. The conditioned air is discharged towards a single person through adjustable nozzle. The main focus of the current research was on the development of the cooling system. A 100 W cooling capacity prototype was designed, built, and tested. The cooling capacity of the vapor compression cycle measured was 165.6 W. The PCM was recharged in nearly 8 hours under thermosiphon mode. When this device is used in the controlled built environment, the thermostat setting can be increased so that building air conditioning energy can be saved by about 5–10%.

scholarly journals Performance analysis of a novel liquid desiccant-vapor compression hybrid air-conditioning system

Energy ◽  
2016 ◽  
Vol 109 ◽  
pp. 180-189 ◽  
Author(s):  
Li Yinglin ◽  
Zhang Xiaosong ◽  
Tan Laizai ◽  
Zhang Zhongbin ◽  
Wu Wei ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Air Conditioning ◽  
Vapor Compression ◽  
Liquid Desiccant ◽  
Air Conditioning System

scholarly journals Energy, Exergy and Anergy Analysis of Vertical Split Air Conditioner Under experimental ON-OFF Cycling

2019 ◽  
Vol 25 (7) ◽  
pp. 1-20
Author(s):  
Yasser Abdul Lateef Ghani ◽  
Abdul Hadi N. Khalifa
Keyword(s):  
Air Conditioning ◽  
Refrigeration Cycle ◽  
Air Conditioner ◽  
Vapor Compression ◽  
Air Conditioning System ◽  
Labview Software ◽  
Energy Flows ◽  
Vapor Compression Refrigeration Cycle ◽  
Vapor Compression Refrigeration ◽  
Arduino Microcontroller

A time series analysis can help to observe the behavior of the system and specify the system faults. In addition, it also helps to explain the various energy flows in the system and further aid in reducing the thermodynamic losses. The intelligent supervisory LabVIEW software can monitor the incoming data from the system by using Arduino microcontroller and calculates the important parameters. Energy, exergy, and anergy analysis present in this paper to investigate the system performance as well as its components. To accomplish this, a 4-ton vertical split air conditioner based on vapor compression refrigeration cycle charged with refrigerant R-22 was modified for experimental analysis. The results showed that during 5400 secs of experimental study, the system shut down once by the software for 5 min. The volumetric and isentropic efficiencies of the compressor were 79.85 % and 64.48 % respectively. The maximum entropy generation was due to the compressor of 3.4 W/K while the maximum anergy was due to the condenser of 1.39 kW. The exergy efficiencies of the compressor, condenser, and the evaporator were 73.57, 40.18, and 47.45 % respectively. The system and Carnot COP were 2.53 and 4.9 respectively. The exergy efficiency of the air conditioning system was 48.7 %.  

Review on Solar Powered Desiccant Wheel Cooling System

2017 ◽  
Vol 9 (01) ◽  
pp. 31-34
Author(s):  
Khushboo Singh
Keyword(s):  
Air Conditioning ◽  
Cooling System ◽  
Good Alternative ◽  
Energy Utilization ◽  
Working Fluid ◽  
Low Grade ◽  
Vapor Compression ◽  
Air Conditioning System ◽  
Desiccant Wheel ◽  
Solar Powered

Nowadays, there is still a big amount of needs in air conditioning system with environmental change and improvement of living standards. However, air conditioning system have already accounted for a large part of energy consumption in the whole society, and then how to effectively increase the energy utilization. Desiccant wheel cooling system operate on the principle of adsorption dehumidification and evaporate cooling. The system adopts natural substance as working fluid and can be driven by low grade thermal energy such as solar energy. Due to this merit, solar powered desiccant wheel cooling system has recognized as one of good alternative to conventional vapor compression air conditioning system and has obtained increasing interest in the past years. This review paper aims to summarize recent research development related to solar powered desiccant wheel cooling system and to provide information for potential application. The cooling potential of the system is based on the performance of the desiccant wheel that removes humidity from outside air to increase the potential of the humidifier.

scholarly journals Application of the counter- and cross-flow indirect evaporative cooler for heat recovery under different climate conditions

2019 ◽  
Vol 100 ◽  
pp. 00010
Author(s):  
Aleksandra Cichoñ ◽  
Anna Pacak ◽  
Demis Pandelidis ◽  
Sergey Anisimov
Keyword(s):  
Air Conditioning ◽  
Heat Recovery ◽  
Cross Flow ◽  
Vapor Compression ◽  
Air Conditioning System ◽  
Climate Conditions ◽  
Application Potential ◽  
Evaporative Cooler ◽  
Flow Configurations ◽  
Direct Evaporative Cooler

This paper investigates the potential of applying an indirect evaporative cooler for heat recovery in air-conditioning system under various climate conditions. The counter- and cross-flow configurations of the indirect evaporative exchanger are addressed in this study in terms of their performance and applicability for different climate zones. Presented analyses are carried out with original ε-NTU model considering condensation from the product airflow and validated against experimental data. It was stated that both configurations of the indirect evaporative exchanger have a high application potential to be employed as a heat recovery device under most climatic parameters. Additionally for each climate zone considered in this paper, the air-conditioning system that consists of either the indirect evaporative exchanger and vapor-compression cooler or indirect evaporative exchanger and direct evaporative cooler is proposed.

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