scholarly journals Optimization on fresh outdoor air ratio of air conditioning system with stratum ventilation for both targeted indoor air quality and maximal energy saving

2019 ◽  
Vol 147 ◽  
pp. 11-22 ◽  
Author(s):  
Yong Cheng ◽  
Sheng Zhang ◽  
Chao Huan ◽  
Majeed Olaide Oladokun ◽  
Zhang Lin
Keyword(s):  
Air Quality ◽  
Energy Saving ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Conditioning ◽  
Outdoor Air ◽  
Air Conditioning System ◽  
Maximal Energy

scholarly journals Transient Effects of Different Ventilation Methods on Car Indoor Air Quality

2015 ◽  
Vol 2 (1) ◽  
pp. 70 ◽  
Author(s):  
Feng-Chyi Duh
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Conditioning ◽  
Heat Index ◽  
Transient Effects ◽  
Air Conditioning System ◽  
Carbon Dioxide Concentrations ◽  
Volatile Organic

This study investigated transient effects on the air quality of parked cars and moving cars with and without operating air conditioning. Carbon dioxide, carbon monoxide, volatile organic compounds, and formaldehyde concentrations were measured for comparative analysis. The results showed that simply changing the air conditioning system from internal circulation to external circulation to introduce air from outside reduces carbon dioxide concentrations by more than 50%, volatile organic compound concentrations by more than 77%, and the heat index from 0.1℃/min to less than 0.05 ℃/min. In order to conserve energy and improve car indoor air quality, this study can serve as a reference on healthy car environments.

scholarly journals Planning and Design of Low-Power-Consuming Full-Outer-Air-Intake Natural Air-Conditioning System

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Chien-Lun Weng ◽  
Lih-Jen Kau
Keyword(s):  
Air Quality ◽  
Low Power ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Conditioning ◽  
Ambient Air ◽  
Living Environment ◽  
Air Conditioning System ◽  
Solvent Vapor ◽  
Air Intake

A person stays indoors for about 85%∼90% time of his lifetime, and the need for a comfortable indoor environment is getting higher; thus, the air-conditioning dependency becomes intense too. Nowadays, residents focus on both the comfortable living environment and indoor air quality. A closed environment will become hazardous because of carbon dioxide released during respiration and toxic organic solvent vapor released from interior decoration. In order to improve the indoor air quality (IAQ), we must allow outer fresh air into the indoor space and release the dirty air out. But while taking in fresh air, the heat and factory/vehicle exhaust are also introduced. Indoor CO2, HCHO, and VOCs and outer dirty gas threaten human health badly. To solve this problem, we bring up an innovative low-power-consuming full-outer-air-intake natural air-conditioning system that completely separates intake and exhaust air, which is a solution for cross-contamination and makes mass/energy exchange by means of air and water. Design airflow exceeds 300∼500 CFM, steam evaporation mass rate reaches 3.13∼3.88 kg/hr, and heat exchange capacity becomes 1,855∼2,300 kcal/hr. The sensible heat effectiveness is 71%∼112%, and EER exceeds 14.05∼17.42 kcal/W·h. In addition, the system under design can be of positive or negative pressure status according to the user’s or work’s requirement. It creates a comfortable and healthy living environment by supplying clean and fresh outer ambient air with low power consumption.

scholarly journals A REVIEW ON DESIGN OF AIR CONDITIONING SYSTEM OF THE SCHOOL FOR BETTER INDOOR AIR QUALITY

2020 ◽  
Vol 5 (12) ◽  
pp. 160-167
Author(s):  
Parth.J. Makadia ◽  
Shubham.U. Nalawade ◽  
Siddhesh.S. Jadhav ◽  
Akshay.L. Gawade ◽  
Shashikant.S. Goilkar
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Conditioning ◽  
Air Conditioning System

Distribution of Indoor Air Quality under Air Conditioning Running

2014 ◽  
Vol 945-949 ◽  
pp. 976-979
Author(s):  
Bao Wei Liu
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Air Quality ◽  
Theoretical Analysis ◽  
Thermal Comfort ◽  
Energy Saving ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Air Conditioning ◽  
Dynamics Model

People are constantly committed to seeking new ways that energy saving ventilation can improve indoor air quality. In this paper, methods of theoretical analysis and numerical simulation combining established indoor ventilation jet crash fluid dynamics model to simulate the indoor air, thermal comfort and indoor air quality issues.

Indoor Air Quality Based Economizer and Energy Recovery Wheel Trainer Construction

2020 ◽  
Vol 07 (3&4) ◽  
pp. 6-12
Author(s):  
Rupesh S Ingale ◽  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Gas Phase ◽  
Indoor Air ◽  
Air Conditioning ◽  
Energy Recovery ◽  
Mental Health Issue ◽  
Outdoor Air ◽  
Air Contamination ◽  
The Many

Indoor Air Quality is one of the important factors in heating, ventilation, and air conditioning industry. In the many years as growing, industrialisation and scientific researches have indicated that the air within the indoor air can be more seriously polluted than the outdoor air. In recent years, pollution caused by indoor decoration has become more and more serious. As most people spend about 90% of their time indoors, the influence of indoor air contamination is long-termed and consecutive. There are many indoor toxicants can potentially cause and lead to a variety of health diseases like as dysesthesia, mental health issue, transient morbidity, disability and even death in extreme cases. also, it gives birth to new viruses, germs that cause human being. For this condition, we are using the economizer trainer and the purge wheel for the betterment of the indoor air quality and improve efficiency. The energy recovery wheel plays an important roll in this indoor air quality based economizer by using the filtration like odour filtration and gas-phase filtration we can control the chemical component and odour in the air quality.

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