Experimental Study on the Effects of Air Temperature on the Adjustment of Venetian Blind and Artificial Lighting

This paper aims to present an experimental study of rough rice (BRSMG CONAI cultivar) drying by using a stationary method. The grain was dried in an oven with air mechanical movement under controlled conditions of velocity, temperature and relative humidity. In order to obtain balanced moisture content, the samples studied were kept at 40 and 70°C. Results of the drying and heating kinetics of the grain during the process are shown and analyzed. It was found that higher drying rate and lower time for drying as higher air temperature (70°C) is used. It can be concluded that the reduction of the moisture content of the grain, is considered very complex and, depending on the method and drying conditions, can substantially provokes breaking and cracks, which reduces final product quality.

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Experimental study on ventilation using earth-to-air heat exchanger in Surabaya

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/907/1/012015 ◽

2021 ◽

Vol 907 (1) ◽

pp. 012015

Author(s):

A Juniwati ◽

D S Mintorogo ◽

A E Abednego ◽

S Kurnia ◽

E A Handoyo

Keyword(s):

Experimental Study ◽

Heat Exchanger ◽

Air Temperature ◽

Thermal Condition ◽

Room Temperature ◽

Tropical Climate ◽

The Other ◽

Outdoor Air ◽

The Earth ◽

Typical Condition

Abstract The main problem related to thermal condition in Surabaya as a second-largest city in Indonesia is humid and hot. It is a typical condition of tropical climate. Ventilation in the hot day will bring warm and humid outdoor air into a room. It will increase the temperature of air in the room. One of some efforts to reduce the outdoor air temperature is using an earth to air heat exchanger (EAHE) to transfer heat from the air to the earth or ground. This paper will discuss about research done to study the effect of EAHE to a room temperature. The study used two model rooms which are similar and a model EAHE. One room called condition room will receive air flowing from the EAHE pipe and the other room is called the referent room. From the research, it is found that the air in condition room with EAHE is cooler in the daytime compared to the referent room. The temperature of the condition room with EAHE is more stable.

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Changes in Growth of Watermelon Scions and Rootstocks Grown under Different Air Temperature and Light Intensity Conditions in a Plant Factory with Artificial Lighting

Journal of Bio-Environment Control ◽

10.12791/ksbec.2021.30.2.133 ◽

2021 ◽

Vol 30 (2) ◽

pp. 133-139

Author(s):

Yurina Kwack ◽

Sewoong An

Keyword(s):

Light Intensity ◽

Air Temperature ◽

Artificial Lighting ◽

Plant Factory

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Experimental verification of a CFD model for the closed plant factory under artificial lighting

E3S Web of Conferences ◽

10.1051/e3sconf/202021303013 ◽

2020 ◽

Vol 213 ◽

pp. 03013

Author(s):

Wei Lu ◽

Yiwen Hu ◽

Shenghan Zhou ◽

Xin Zhang ◽

Quan Yuan ◽

...

Keyword(s):

Fluid Dynamics ◽

Air Temperature ◽

Experimental Verification ◽

Cfd Model ◽

Air Velocity ◽

Artificial Lighting ◽

Mean Relative Error ◽

Plant Factory ◽

Computational Fluid Dynamics Cfd ◽

The Mean

A computational fluid dynamics (CFD) model for the closed plant factory under artificial lighting has been developed in this study, the experimental verification of CFD model with the air velocity value was compared with the measured air temperature value. The results showed that the mean relative error of validation with the air velocity was 15%, and comparable with experimentally observed air temperature profile inside the plant factory with RMSE of 3% which show the utility of CFD to study plant factory microclimatic parameters.

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Experimental Study on Cooling-Air Grinding for 40Cr

2010 14th International Heat Transfer Conference, Volume 4 ◽

10.1115/ihtc14-22084 ◽

2010 ◽

Author(s):

Hua Zhang ◽

Yefeng Liu ◽

Xi Chen ◽

Huanhuan Zhao ◽

Yulin Cai ◽

...

Keyword(s):

Experimental Study ◽

Influencing Factors ◽

Air Temperature ◽

Application Technology ◽

Test Pieces ◽

Cooling Air ◽

Important Significance ◽

Performance Influencing Factors

Cooling-air grinding is one of important green grinding. Cooling-air grinding performances for 40Cr are test in this paper using cooling-air generator. Main performance influencing factors are test and analyzed, such as air temperature, wheel granularity, amount of feed and so on. Cooling-air grinding results shows that roughness of surface of test pieces can reach precise grinding standard. So cooling-air grinding can replace traditional grinding in this experiment. This study for the promotion of cooling-air grinding application technology has important significance for reference.

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The Experimental Study on High Temperature Air Combustion and CF4 Decomposition

Heat Transfer: Volume 1 ◽

10.1115/ht2005-72440 ◽

2005 ◽

Author(s):

L. Jia ◽

S. Ma

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

High Temperature ◽

Air Temperature ◽

Waste Heat ◽

Exhaust Gas ◽

High Temperature Air Combustion ◽

Factors Influencing ◽

Regenerative Burner ◽

Ceramic Honeycomb

For the purpose of decomposing the processing gases CF4 from semiconductor manufacturers, ceramic honeycomb regenerative burner system is suggested by using the principle of HTAC. A simulated high temperature air combustion furnace has been used to determine the features of HTAC flames and the results of the decomposition of CF4. The preheat air temperature of it is above 900 °C. The exhaust gas released into the atmosphere is lower than 150 °C. Moreover, the efficiency of recovery of waste heat is higher than 70%, the NOx level in exhaust gas is less than 300 mg/m3 and the distribution of temperature in the furnace is nearly uniform. The factors influencing heat transfer, temperature profile in chamber and NOx emission were discussed. Also some CF4 can be decomposed in this system. Experimental results indicated that the destruction removal efficiency (DRE) of CF4 increases with the increasing of concentration of H2O in some scale, and will not keep climbing when the concentration reach a point. DRE of CF4 decreases with the decreasing of concentration of CF4 under condition of other factors unchanged.

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