نتایج جستجو برای: air conditioners

تعداد نتایج: 206149  

Journal: :Dental materials journal 2002
Masato Nishijima Yoshiya Hashimoto Masaaki Nakamura

The estrogenic activity of phthalate esters for dental use as plasticizers was concerned. To study the feasibility of candidate chemicals for phthalate tissue conditioners, three candidate plasticizers, di-n-butyl sebacate, acetyl tributyl citrate and tri-n-butyl phosphate together with conventional plasticizers were examined for estrogenic activity and cytotoxicity using three estrogenicity as...

Journal: :Sir Syed University research journal of engineering and technology 2022

The cost affiliated with energy consumption of a conventional air conditioner is so high, an average salaried person cannot afford it. 5.8 m x 4.5 3.6 room used for the assessment, in which Inverter/VRF and Conventional conditioning systems are separately to attain set temperature 25 OC weather Hyderabad, Pakistan. Through simulated results, May has highest use, 467 kWh 310 inverter conditionin...

2010
Su Goog Shon Soo Mi Yang

Recently, there are lots of control equipments in a train such as traction control, air conditioners and even internet access. For this reason, vehicle network must allow for the big amount of transmission data and must ensure the high reliability. After investigating about characteristics of multifunction vehicle bus, an error detection and analysis system is proposed. The proposed error analy...

2014
K. Sano K. Mitsui

the noise profile. In order to locate the various sources of noise of the hermetic rolling position type compressor for room air conditioners, we experimentally analyzed the compressor noise and found that a main cause of the·noise was the acoustically amplified pressure pulsation in various parts of the compressor. Moreover, with reference to results of this noise source analysis, several proc...

2014
Theodor Borsche Frauke Oldewurtel Göran Andersson

Demand Response (DR) is one way of providing more flexibility to the electric power system. Various approaches to enable control of small, thermostatically controlled loads such as air conditioners and Electric Water Heaters (EWHs) have been published in the past. This paper focuses on the optimal dispatch of these flexible loads. A Model Predictive Control is implemented to minimize total cost...

2012
Navneet Kaur Gurpurneet Kaur Chahat Jain

Inverter is truly the nucleus of electronics industry. It is the main building block of everyday appliances i. e. microwaves, power tools, battery chargers, air conditioners and computers etc. In this paper, CMOS technology has been chosen to study the transient and dc characteristics of an inverter. Feature size is the main parameter to study the voltage transfer characteristics of inverter, f...

2014
Won Jong Lee Ji Hwan Jeong Wonjong LEE Ji-Hwan JEONG

Fin-tube heat exchangers are widely used in air-conditioners and heat pumps, which are constructed with a lot of tubes. Refrigerant circuit of heat exchanger with numerous pipe can be constructed by many methods. Refrigerant circuit design is usually determined designer’s experience and case by case test without guides. The number of path affects largely on heat exchanger performance. In this p...

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