Results 11 to 20 of about 816 (252)

Leakage Research of Split-type Air-conditioner using R290 as Refrigerant

open access: yesZhileng xuebao, 2013
The ozone depletion potential (ODP) and global warming potential (GWP) of HCFCs and HFCs are higher than hydrocarbons (HCs). R290 is perfect in environmental protection and energy saving performance.
张网   +4 more
doaj   +1 more source

Retrofit of a standard split-type air conditioner into an air-to-water heat pump

open access: yesIOP Conference Series: Materials Science and Engineering, 2023
Abstract In the context of the rising prices of energy and especially of natural gas, the interest in heat pumps has grown steadily over the last period, as they are a very convenient alternative to low and medium power thermal plants.
Botu Mădălina   +3 more
openaire   +1 more source

Investigation of infectious droplet dispersion in a hospital examination room cooled by split-type air conditioner. [PDF]

open access: yesJ Environ Health Sci Eng
AbstractThe novel coronavirus (SARS-CoV-2) outbreak has spread worldwide, and the World Health Organization (WHO) declared a global pandemic in March 2020. The transmission mechanism of SARS-CoV-2 in indoor environments has begun to be investigated in all aspects.
Yüce BE   +8 more
europepmc   +4 more sources

Modeling and Optimizing the Parameters of Condensers in Split Type Room Air Conditioners

open access: yesChemical Engineering Research Bulletin, 2021
Split type room air conditioners (RACs) are very common nowadays. In Bangladesh, RAC manufacturers employ trial-error prototyping techniques in their design to increase the efficiency of RACs and the profitability of the plant. Computer modeling can be a great help to reduce the cost in the R&D stage to find the optimum design of RACs.
MAA Shoukat Choudhury   +4 more
openaire   +2 more sources

EXPERIMENTAL AND NUMERICAL STUDY OF INSERTING AN INTERNAL HOLLOW CORE TO FINNED HELICAL COIL TUBE-SHELL HEAT EXCHANGER

open access: yesJournal of Engineering and Sustainable Development, 2021
In the present study, an experimental study and a numerical method are used to simulate the effect of utilizing finned helical coil heat exchanger horizontally oriented with and without internal hollow core inside the shell and monitoring the heat ...
Bahaulddin K. Roomi, Maathe A. Theeb
doaj   +3 more sources

RECESSED BALCONY HEAT RE-ENTRY EFFECT ON FAÇADE WITH CONDENSER UNITS

open access: yesDimensi: Journal of Architecture and Built Environment, 2021
The use of split-type air conditioner in Surabaya results in the almost universal typical apartment layouts which feature a recessed balcony upon the building’s exterior façade which then utilized as air-conditioner condenser unit storage.
Kevin Yonathan Tanumidjaja   +2 more
doaj   +1 more source

Application of emergency control of central air conditioning in safe and stable operation of large power grid

open access: yesThe Journal of Engineering, 2019
Air conditioning is a load with thermal inertia, and short time control will not cause an obvious negative impact on user power consumption. Compared with the traditional mini-split-type air conditioner, it has the advantages of flexible control method ...
Meng Liu   +3 more
doaj   +1 more source

Increasing the efficiency of split type air conditioners/heat pumps by using ventilating exhaust air [PDF]

open access: yesE3S Web of Conferences, 2019
The article presents the possibility of using exhaust air from ventilation system to increase the efficiency (SCOP, COP, SEER and EER) of commonly used air conditioners with the function of a heat pump. These types of devices are very popular both in residential and in public buildings.
Cepiński Wojciech, Szałański Paweł
openaire   +2 more sources

The Effect of Refrigerant Charge on the Performance of a Split-Unit Type Air Conditioner Using R22 Refrigerant

open access: yesMATEC Web of Conferences, 2018
Numerous air conditioners are running without a proper refrigerant charge due to leakage and improper charging during installation. Therefore, there is a need to understand the performance of the air conditioner if it is not properly charged for the ...
Yusof Mohd Hazwan   +5 more
doaj   +1 more source

Application of the heat pipe to enhance the performance of the vapor compression refrigeration system

open access: yesCase Studies in Thermal Engineering, 2019
This paper presents an application of the heat pipe to enhance the performance of the air conditioner. The study is done in two steps. First, the effect of pertinent parameters on the heat transfer rate of the heat pipe set is investigated. Then the heat
Santiphap Nakkaew   +7 more
doaj   +1 more source

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