scholarly journals Performance Analysis of Different Refrigerants in Automobile Air Conditioning Equipment Using Variable Capacity Compressor

2021 ◽  
Author(s):  
Mehmet Said İNAN ◽  
Alpaslan ALKAN
Keyword(s):  
Performance Analysis ◽  
Air Conditioning ◽  
Variable Capacity ◽  
Conditioning Equipment ◽  
Automobile Air Conditioning

Cost and Performance Analysis of a Solar Thermal Cooling Project

2010 ◽  
Author(s):  
Joel K. Dickinson ◽  
Robert O. Hess ◽  
Jeff Seaton ◽  
Henny van Lambalgen ◽  
Andrea L. Burnham
Keyword(s):  
Performance Analysis ◽  
Air Conditioning ◽  
Cooling System ◽  
Hot Water ◽  
Solar Thermal ◽  
Maintenance Cost ◽  
Conditioning Equipment ◽  
And Performance ◽  
Solar Thermal Cooling ◽  
Thermal Cooling

This paper presents the findings of a field study and performance analysis of a solar thermal cooling system located in Phoenix, Arizona. This system is compared to conventional air conditioning equipment, as well as conventional air conditioning equipment powered by solar electric (photovoltaics). The design of the solar cooling system, which incorporates solar-generated hot water and a single-stage absorption chiller, is discussed. Capital and maintenance cost estimates, including auxiliary electric load and water, are also provided. Operational problems are reviewed together with the design modifications that were required to resolve these issues. Performance of the system and the individual components was determined based on field data collected. Using this data the solar cooler energy savings over conventional air conditioning equipment was determined (Figure 1).

Study on acoustic and flow-induced noise characteristics of L-shaped duct with a shallow cavity

2020 ◽  
Vol 68 (3) ◽  
pp. 209-225
Author(s):  
Masaaki Mori ◽  
Kunihiko Ishihara
Keyword(s):  
Air Conditioning ◽  
Sound Field ◽  
Frequency Range ◽  
Acoustic Characteristics ◽  
Inflow Velocity ◽  
Aerodynamic Sound ◽  
Noise Characteristics ◽  
Flow Induced Noise ◽  
Shallow Cavity ◽  
Conditioning Equipment

An aerodynamic sound generated by a flow inside a duct is one of the noise pro- blems. Flows in ducts with uneven surfaces such as grooves or cavities can be seen in various industrial devices and industrial products such as air-conditioning equipment in various plants or piping products. In this article, we have performed experiments and simulations to clarify acoustic and flow-induced sound characteris- tics of L-shaped duct with a shallow cavity installed. The experiments and simula- tions were performed under several inflow velocity conditions. The results show that the characteristics of the flow-induced sound in the duct are strongly affected by the acoustic characteristics of the duct interior sound field and the location of the shallow cavity. Especially, it was found that the acoustic characteristics were af- fected by the location of the shallow cavity in the frequency range between 1000 Hz and 1700 Hz.

Sign in / Sign up

Export Citation Format

Share Document