Results 1 to 10 of about 3,967 (258)

Occupants and surface types drive microbial dynamics in controlled indoor environments [PDF]

Environmental Microbiome
Background Indoor microbial communities play a critical role in influencing indoor environmental quality and human health and are shaped by occupant activity, surface characteristics, and environmental conditions.
Jianjian Hou, Makiko Nakajima, Yukiko Nishiuchi, Daisuke Ogura, Atsushi Teramoto, China Kuratomi, Yoko Iwamoto, Yoshiko Okamura, Kazuki Moriguchi, Mateja Dovjak, Kento Takayama, Yusaku Tsugami, So Fujiyoshi, Fumito Maruyama   +13 more
doaj   +2 more sources

Analysis on Thermodynamic Perfectibility of Room Air Conditioners

Zhileng xuebao, 2013
According to analysis on the energy efficiency standards of the constant speed room air conditioner and the variable speed type, differences between the two kinds of air conditioners exist in division standard, grades of energy efficiency and outdoor ...
Li Xiaofeng, Ma Yitai, Yan Qiuhui
doaj   +1 more source

The performance of room air conditioner with Cooling Seasonal Performance Factor (CSPF) in Jakarta and Bandung, Indonesia [PDF]

E3S Web of Conferences, 2023
Cooling Seasonal Performance Factor (CSPF) is one of methods for measuring the performance of a room air conditioner to assess its energy efficiency and, therefore, its effect on climate change and environmental impact.
Setyawan Andriyanto, Simbolon Luga Martin, Najmudin Hafid, Julyanti Annisa Ayu, Kurniasetiawati Annisa S., Susilawati   +5 more
doaj   +1 more source

PERFORMANCE EVALUATION OF A SOLAR HYBRID AIR-CONDITIONER [PDF]

Proceedings on Engineering Sciences, 2021
This research presents a solar hybrid air-conditioning system with R410a refrigerant. The sole aim was to compare the performance of a solar hybrid air-conditioner with that of the conventional split-unit air-conditioning systems in the market today ...
Nnamdi Cyprian Nwasuka, Uchechukwu Nwaiwu   +1 more
doaj   +1 more source

Full-scale numerical simulation and experimental validation of the thermal environment under the heating mode in an air-conditioned room

Case Studies in Thermal Engineering, 2023
The numerical simulation of the air flow of the room equipped with the crossflow fan air conditioners has been conducted a lot. However, the simulation of the air flow distribution under the heating mode has always been difficult to match the ...
Hui Zhu, Songtao Hu, Gang Wang, Libin Han, Mengqi Jing, Xiaoli Zhao   +5 more
doaj   +1 more source

Effect of Evaporator Outflow Rate on Air Distribution in the Computer Laboratory using CFD

International Journal of Electrical, Energy and Power System Engineering, 2020
The ideal room temperature will create comfort in the learning and teaching process. With increasing outdoor air temperature due to climate change, an air conditioner is needed to reach the ideal room temperature. An air conditioner is an air conditioner
Rosyida Permatasari, Martinus Bambang Susetyarto   +1 more
doaj   +1 more source

Solar Photovoltaic Direct-Driven Air Conditioning System Performance in Iraq [PDF]

Engineering and Technology Journal, 2020
The present research paper is on photovoltaic air conditioning system using the direct drive method. The experimental system setup arranged in Iraq at Al-taje site at longitude 44.34 and latitude 33.432 during the summer season inside a room.
Hashim Hussein, Ali Numan, Krar Kuder
doaj   +1 more source

Effects of Time to Unactuate Air Conditioning on Fire Growth

Energies, 2021
Air conditioning systems have become essential equipment in many buildings. However, fire safety design and management in buildings rarely consider whether to turn the system off or keep it on in a fire.
Teng-Yi Wang, Kuang-Chung Tsai
doaj   +1 more source

Numerical and Experimental Study on Thermal Comfort of Human Body by Split-Fiber Air Conditioner

Energies, 2022
The thermal comfort of an enclosed room with air conditioner and air-distribution duct coupling can be studied, and the parameters of a split-fiber air conditioner can be optimized on the basis of studying the thermal comfort of various parts of the ...
Jie Yang, Zhimeng Dong, Huihan Yang, Yanyan Liu, Yunjie Wang, Fujiang Chen, Haifei Chen   +6 more
doaj   +1 more source

Simulation and Analyses of a Novel Air-conditioning Solution for Improving Energy Saving in a Data Room [PDF]

E3S Web of Conferences, 2021
In view of the feature of long airflow path, high wind resistance, and large area of refrigeration equipment in traditional data room, a new type of under-floor modular air conditioner and its corresponding new air conditioning solution for data room is ...
Tong Li, Liang CAI, xiao zhang
doaj   +1 more source