Results 11 to 20 of about 4,944 (303)

Experimental performance studies of small wall room air conditioner for R410A retrofitted with R290

open access: yesMATEC Web of Conferences, 2018
An original R410A wall room air conditioner was retrofitted with R290 for performance experiments. The R410A wall room air conditioner has a COP and a refrigerating capacity 6.0597and 1929.3 W respectively.
Fajar TK Berkah   +1 more
doaj   +2 more sources

Study on Regional SEER of Frequency Conversion Room Air Conditioner

open access: yesZhileng xuebao, 2005
The calculated formula of SEER in JRA4046-1999 and GB7725 was analyzed and modified for convenient use. The map of Chinese temperature-strip was given and the weather data for eight cities near 30 years were selected.
刘圣春, 马一太, 成建宏
doaj   +4 more sources

THE EFFECT OF THERMAL RESISTANCE OF CEILING LAYER ON THE PERFORMANCE OF AN AIR CONDITIONER AND ROOM TEMPERATURE DISTRIBUTION

open access: yesRekayasa Mesin
The effectiveness of an air conditioner does not only depend on the design of the air-conditioner solely. Several factors affect the effectiveness of the cooling process of a room.
Jeri Tangalajuk Siang, Daud Patabang
doaj   +3 more sources

Simulation of Air Conditioner Frequency Conversion Control of CRH2 EMUs Based on Matlab

open access: yes机车电传动, 2012
Air conditioner control system of CRH2 EMUs was introduced and simulated based on Matlab/Simulink. Passenger room temperature and refrigerating output with frequency conversion control air conditioner system and on/off air conditioner control system was ...
XIA Hai-long, YANG Mei-chuan, LIU Feng
doaj   +2 more sources

Indoor environment of nearly zero energy residential buildings with conventional air conditioning in hot-summer and cold-winter zone

open access: yesEnergy and Built Environment, 2022
According to the few researches on Nearly zero energy residential buildings (NZERB) in hot-summer and cold-winter zone, although it could reduce the cooling load of buildings due to its high thermal insulation and air tightness, it still needed for ...
Jiankai Dong   +4 more
doaj   +1 more source

A Study on Control Strategy for Air Conditioning of Western Exposed Rooms in Subtropical Region

open access: yesEnergies, 2022
Recently, energy saving has been a major issue in all aspects. In buildings, air conditioning is one major part of power consumption. In this study, we examined the effect of an intermittent control strategy for air conditioning on energy saving in ...
Tzu-Yang Hu   +7 more
doaj   +1 more source

The Effect of Humidified Air on Yarn Properties in a Jet-Ring Spinning System [PDF]

open access: yesTekstilec, 2020
In this study, the effect of 100% atmospheric relative humidity on yarn properties was investigated using jet-ring nozzles and compared with the yarn properties of yarns produced with air operated jet-ring nozzles under normal conditions.
Ekrem Gulsevincler   +2 more
doaj   +1 more source

Estimate the Air Conditioner Capacity [PDF]

open access: yes, 2021
The hot temperature in our country makes it difficult and quite impossible for us to relax comfortably, even when the ceiling fan is set to maximum speed. Even at night, the heat is still felt, making us feel uncomfortable and preventing us from sleeping
Junaedi Irwan, Wan Abdul Halim
core  

A study on the performance of a portable single-duct propane air conditioner and ways of reducing the amount of refrigerant

open access: yes, 2021
The use of environmentally-friendly refrigerants is important for keeping the environment free from ozone-depleting substances and helping minimize global warming threats. Propane (R290) is one of the environmentally-friendly refrigerants.
Tangalajuk Siang, Jeri
core   +1 more source

Sistem Pemantau dan Pengendali Suhu Ruang Server Menggunakan Fuzzy Berbasis Mikrokontroler RobotDyn

open access: yesJurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), 2020
Server role becomes very important to provide service to clients. Therefore the performance of the server needs to be maintained. The performance of the server is not only influenced by the technology of the hardware but also influenced by server room ...
Budi Indra Gunawan   +1 more
doaj   +1 more source

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