5072106 Solar radiation quantity detecting device for automobile air-conditioner

1992 ◽  
Vol 18 (6) ◽  
pp. I-II
Author(s):  
Takashi Osawa
Keyword(s):  
Solar Radiation ◽  
Air Conditioner ◽  
Automobile Air Conditioner

Second Law Analysis of an Automobile Air-Conditioner With R22/R124/R152a Refrigerant Mixture

1997 ◽  
Author(s):  
T. Kiatsiriroat ◽  
T. Euakit
Keyword(s):  
Mass Fraction ◽  
Second Law ◽  
Air Conditioner ◽  
Refrigerant Mixture ◽  
Automobile Air Conditioner ◽  
Second Law Analysis

In this paper the irreversibilities and second law efficiency of an automobile air-conditioner with R22/R124/R152a refrigerant blend have been carried out. The engine is 1,300 c.c. capacity and operated at different compressor speeds between 13–55 rps. The irreversibility at each component of the air-conditioner increases with higher compressor speed. Significant irreversibilities have been found at the condenser and the compressor. In the case of the cycle second law efficiency, the unit with 30% mass fraction of R22 shows better performance than those with 20 and 40% mass fraction.

scholarly journals On the Mechanism of Noise Generation in the Sirocco Fan for Automobile Air Conditioner

2008 ◽  
Vol 74 (748) ◽  
pp. 2552-2559 ◽  
Author(s):  
Yasuhiko SAKAI ◽  
Takaaki KATO ◽  
Yuu MORIGUCHI ◽  
Masaharu SAKAI ◽  
Kouji ITO ◽  
...  
Keyword(s):  
Noise Generation ◽  
Air Conditioner ◽  
Automobile Air Conditioner ◽  
Sirocco Fan

Leakage analysis and concentration distribution of flammable refrigerant R290 in the automobile air conditioner system

2020 ◽  
Vol 110 ◽  
pp. 286-294 ◽  
Author(s):  
Yun Zhang ◽  
Cichong Liu ◽  
Tianying Wang ◽  
Leyan Pan ◽  
Wanyong Li ◽  
...  
Keyword(s):  
Concentration Distribution ◽  
Air Conditioner ◽  
Automobile Air Conditioner

Stereoscopic PIV Measurement on Multi-Blade Fan

2003 ◽  
Author(s):  
G. R. Cho ◽  
M. Kawahashi ◽  
H. Hirahara ◽  
M. Kitadume
Keyword(s):  
Fluid Flow ◽  
Air Conditioner ◽  
Trailing Edge ◽  
Inlet Flow ◽  
Stereoscopic Piv ◽  
Piv Technique ◽  
Piv Measurement ◽  
Automobile Air Conditioner ◽  
Blade Width ◽  
Many Sources

There are many sources of noise in multi-blade fan near the trailing edge of blades or cut-off region of the casing. The flows passing through the impeller of a multi-blade fan that is now being used as a blower for automobile air conditioner system have been successfully quantified by a stereoscopic PIV technique. Eight test sections are chosen at the inlet flow of the impeller changing the measurement angles, 0, 45, 90, 135, 180, 225, 270 and 315 degrees from cut-off point of its casing. The calibration for cameras is conducted at 9 planes within the blade width of the impeller. It is revealed that the velocity distributions are strongly influenced by the casing and cone shape, and there exists a symmetrical spiral flows in the inner part of the impeller because cut-off part of its casing disturb the fluid flow.

Numerical Simulation for Outdoor Thermal Environment of High-Rise Building With Air-Conditioner

2010 ◽  
Author(s):  
Zhen Zhang ◽  
Lige Tong ◽  
Li Wang
Keyword(s):  
Solar Radiation ◽  
Thermal Environment ◽  
Installation Space ◽  
Air Conditioner ◽  
Confined Space ◽  
Steady State Condition ◽  
Factors Affecting ◽  
High Rise ◽  
High Rise Building ◽  
Heat Released

A large number of split-type air conditioner are widely used in high-rise residential or office buildings in China and the outdoor units of air-conditioner are often installed at the sidewalls or on the roofs in the confined space of a high-rise building. The factors affecting the performance of air-conditioner are the solar radiation, the heat released from the outdoor units, the ventilation of the confined installation space of a building where the outdoor units are installed and so on, which are investigated in this study. The air flow and temperature distribution under steady-state condition near the two outdoor units installed on the same storey in a building are simulated by software FLUENT, in which the porous model and DO radiation model are used. The optimum installation distance from the supporting wall is obtained. The average temperature of the exit surface without wind is 1.18% more than that with wind. The results show that the heat released from the outdoor units and the ventilation of the confined installation space where the outdoor units are installed are the main factors affecting the thermal environment in the confined installation space; The influence of the solar radiation can be neglected.

Automobile Air-Conditioner Control System Based on STC12C5A60S2 Single-Chip Microcontroller

2012 ◽  
Vol 614-615 ◽  
pp. 635-639
Author(s):  
Shu Sheng Xiong ◽  
Lian Xie ◽  
Sheng Kai Zhou ◽  
Xiao Shuai Ren ◽  
Jin Xu
Keyword(s):  
Control System ◽  
Software Design ◽  
Hardware Design ◽  
Conversion Function ◽  
Air Conditioner ◽  
Single Chip ◽  
Important Indicator ◽  
Automobile Air Conditioner ◽  
High Control ◽  
Control Accuracy

Recent years, automobile air-conditioner control system is particularly important as the automobile air-conditioner is becoming an important indicator to measure the comfort of a car. This paper introduces the hardware and software design of the system based on STC12C5A60S2 microcontroller.The hardware design part includes the circuits design of motor and fan, and the software design part describes the way to realize the modes conversion function. Experiments show that the automobile air-conditioner system can reach high control accuracy and it's practical.

scholarly journals Research on high performance of heat exchanger for automobile air conditioner

2019 ◽  
Vol 2019 (0) ◽  
pp. 0155
Author(s):  
Satoshi Akaike ◽  
Naohisa Takagaki ◽  
Osamu Kawanami ◽  
Itsuro Honda
Keyword(s):  
Heat Exchanger ◽  
High Performance ◽  
Air Conditioner ◽  
Automobile Air Conditioner
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