scholarly journals EXPERIMENTAL STUDY OF A CYCLONE SCRUBBER AIR CONDITIONING SYSTEM USING FACTORIAL DESIGN

2014 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
R. B. Elias ◽  
A. A. B. Pécora
Keyword(s):  
Factorial Design ◽  
Air Conditioning ◽  
Air Flow ◽  
Flow Ratio ◽  
Air Conditioning System ◽  
Saturation Efficiency ◽  
Factorial Design Of Experiments ◽  
Environmental Air ◽  
Operational Range ◽  
Full Factorial

This work reports the results obtained in the experimental evaluation of an American type cyclone which has been modified and adapted to perform environmental air conditioning by evaporative cooling. Equipment was fitted with nozzles atomizers, which perform the injection of liquid transversely to the gas stream. The tests were carried out following a full factorial design of experiments in order to obtain the influence of the atomizer holes diameter and of the liquid/air flow ratio on the cyclone performance. The diameter of the atomizer insert holes was in the range of 2.8 to 3.6 mm and the liquid/air flow ratio was from 0.65 to 0.76 L/m3. The saturation efficiency (Es) of the cyclone was analyzed through the Response Surface Methodology (RSM). Saturation efficiencies between 45.9 and 62.2 % were obtained. The use of statistical techniques allowed the proposition of empirical correlations to predict the behavior of the system regarding the studied operational range. The results show that the cyclone scrubber equipment is a viable alternative to air conditioning for human standards.

Research on Constant Pressure of Air Supplying and Energy Saving for the Air Conditioning System

2012 ◽  
Vol 164 ◽  
pp. 362-365
Author(s):  
Guang Zhen Cheng ◽  
Zuo Qing Liu ◽  
Hong Fei Lin
Keyword(s):  
Air Conditioning ◽  
Frequency Conversion ◽  
Constant Pressure ◽  
Frequency Control ◽  
Air Flow ◽  
Air Conditioning System ◽  
Velocity Modulation ◽  
Speed Regulation ◽  
Soft Start ◽  
Energy Conservation Principle

This paper provides a method of supply constant pressure air for air conditioning system. It analysis the energy consumption betwwen the damper adjuste air flow with variable frequency speed regulation adjuste air flow. The paper Introduce the Energy conservation principle of the frequency control blower. The supplying air Pipeline subject to a uniform force, the equipments mechanical properties was improved.The results show that Uses the frequency conversion velocity modulation to carry on supply constant pressure air, obviously reduces the energy consumption.The electrical motor starting characteristic is improved, realizes the electrical motor soft start.

Multi response optimization of aluminium alloy machining using full factorial design of experiments

2020 ◽  
Author(s):  
A. Saravanakumar ◽  
L. Rajeshkumar ◽  
N. S. Sanjay kumar ◽  
R. Sivakumar ◽  
S. Sriramthilak ◽  
...  
Keyword(s):  
Design Of Experiments ◽  
Aluminium Alloy ◽  
Factorial Design ◽  
Full Factorial Design ◽  
Response Optimization ◽  
Factorial Design Of Experiments ◽  
Full Factorial

Using a Fan Air Flow Station to Control Building Static Pressure in a Variable Volume Air Conditioning System

Solar Energy ◽  
2005 ◽  
Author(s):  
B. Zheng ◽  
X. Pang ◽  
M. Liu ◽  
I. Joo
Keyword(s):  
Air Conditioning ◽  
Static Pressure ◽  
Air Flow ◽  
Pressure Control ◽  
Speed Profile ◽  
Air Conditioning System ◽  
Variable Volume ◽  
Fan Speed ◽  
Sensor Locations

A fan airflow station measures airflow through a fan using fan speed, fan head, and the field-calibrated fan curve. This paper presents the theory and techniques of using fan airflow station in a variable volume system for building pressure control. These techniques include fan curve calibration, determination of the volumetric flow difference of the supply and return airflows, and sensor locations. The return fan speed profiles were plotted, and data was collected on building pressure after implementing the fan air flow station. The Implementation of a fan air flow station demonstrates that the return fan speed can track the supply fan speed profile as building loads change, such that building pressure is maintained within a satisfactory range.

scholarly journals The Examination of Air Blowing Method and Thermal Comfort of Variable Air Conditioning System using Coanda Effect

2019 ◽  
Vol 111 ◽  
pp. 01079
Author(s):  
Hikari Sakakibara ◽  
Takashi Akimoto ◽  
Hitomi Igarashi ◽  
Shunsuke Nakamura ◽  
Madoka Kimura
Keyword(s):  
Thermal Comfort ◽  
Air Conditioning ◽  
Air Flow ◽  
Building Design ◽  
Upper Body ◽  
Coanda Effect ◽  
Subjective Perception ◽  
Air Conditioning System ◽  
Air Blowing ◽  
Coandǎ Effect

The “Strategic Energy Plan” implemented by the Cabinet of Japan in 2014 strives for zero energy building design for typical new construction by 2030. The present study focuses on a ductless and variable air conditioning system, using the Coanda effect, with the aim of reducing fan power, and saving of resources by reducing the space between the ceiling. In this study, we examined the air blowing method and evaluated thermal comfort using computational fluid dynamics as well as subjective perception of coolness in a midsize office. A draft zone was reduced by extending the interval between conditioned air outlets. However, if the extension of throw length was excessive, hot space would be formed near the air outlets, and there would be a risk of impacting thermal comfort. Moreover, we confirmed that the thermal comfort was generally favourable. In particular, perceived thermal comfort was better at the position in the office where the air flow landed on the upper body of the subjects. On the other hand, it decreased when the influence of the air flow was small, and at the point where air flow landed on the lower body of the subjects.

scholarly journals Factorial design and design of experiments for developing novel lead free solder alloy with Sn, Cu and Ni

2020 ◽  
Vol 11 ◽  
pp. 18
Author(s):  
Jayesh S ◽  
Jacob Elias ◽  
Manoj Guru
Keyword(s):  
Design Of Experiments ◽  
Factorial Design ◽  
Solder Alloy ◽  
Lead Free ◽  
Lead Free Solder ◽  
Market Leader ◽  
Lead Free Solder Alloy ◽  
Factorial Design Of Experiments ◽  
Free Solder ◽  
Full Factorial

Inherent toxicity makes lead a banned material in solder alloy making process. Lead-tin alloy was a favorable alloy used for soldering in electronic packaging manufacturers. As a result of the ban on lead, electronics package industries were looking for novel lead free alloys which can substitute the conventional Sn-Pb alloy. Many alloys were discovered by the scientists. None of them were able to substitute the Sn-Pb alloy and become the market leader. In this paper a new composition with Sn, Cu and Ni is made to analyze which can potentially replace the lead containing solder alloy. Using the design of experiments method, the optimized composition of Cu and Ni is predicted. The full factorial design of experiments with two replications is used to find the optimized composition. Melting temperature, contact angle and hardness were taken as the critical output parameters. Results obtained shows that the optimum composition of Cu and Ni are 1 and 1% by wt.

Performance Test of Desiccant Heating, Ventilating and Air-Conditioning System by Using Multiple Tracer Gas Dilution Method

2015 ◽  
Vol 23 (04) ◽  
pp. 1550027 ◽  
Author(s):  
Napoleon Enteria ◽  
Hiroshi Yoshino ◽  
Akashi Mochida ◽  
Rie Takaki ◽  
Akira Satake ◽  
...  
Keyword(s):  
Air Conditioning ◽  
Performance Test ◽  
Air Flow ◽  
Dilution Method ◽  
Tracer Gas ◽  
Air Conditioning System ◽  
Flow Rates ◽  
Lecture Room ◽  
Detailed Evaluation ◽  
Gas Dilution

The desiccant-based air-conditioning system consists of many heat and mass transfer components operating together with air fans. The performance test using the multiple tracer gas dilution method is important for knowing the internal and external flow rates, including the air leakages. The results of the test show the actual internal air flow rates and the sources of air leakage, and also show the interaction of air in the air-conditioned lecture room and in the mechanical room. The performance test using the multiple tracer gas dilution method in air flow and air leakages is important for a detailed evaluation of any air-conditioning system such as this desiccant-based one.

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