نتایج جستجو برای: air conditioners

تعداد نتایج: 206149  

Journal: :Journal of Environmental Engineering (Transactions of AIJ) 2012

Journal: :Journal of energy systems 2021

R1234yf is a synthetic HFO refrigerant co-developed as replacement for R134a in automotive air conditioning applications. Thus, this study, alternatives to the that were removed from newly produced devices examined. The performance of cooling processes and R744 gases was compared with R134a. A simulation model first developed. This validated experimental results. Analysis conducted both heating...

اکبری محمدی, سیدخلیل, حقانی, ایمان, محمدپور, رضاعلی, موحدی, معصومعلی, هدایتی, محمدتقی,

Background and purpose: Biological pollution in indoor air is mostly created through bacteria and fungi which are harmful to human health. In the present study we evaluated the fungal diversity of air and air-conditioning systems in different schools of Mazandaran University of Medical Sciences. Materials and methods: The samples were collected from some rooms in different schools of Mazanda...

2012
Danyal Mohammadi

Single-phase induction machines are found in various appliances such as refrigerators, washing machines, driers, air conditioners, and fans. Large concentrations of single-phase induction motor loads such as air conditioners and other motorcompressor loads can adversely impact the dynamic performance of a power system. An understanding of the dynamics of this type of induction machine is needed...

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