Air-conditioners (AC) are devices/systems that are used indoors to cool air by reducing the humidity of the air following condensation of the water vapour. It is observed that hyperventilation of cold dry air causes bronchoconstriction in asthmatic patients. [1,2] Modern styles of living in urban areas are considered potentially responsible for the development of airway allergic diseases due to...

Abstract: Increasing demand toward driving comfort steers automobile engineers to spend more and more effort on refining the automobile air conditioning system. The system is of high order and operated at the presence of several disturbances. The control algorithm should be able to control the evaporator out temperature with the acceptable control action. In this work, the sliding mode control ...

That doctor, whose days were filled with analyzing and interpreting the tiny electrical signals emitted by the heart, spent his evenings enjoying music through a high-end system. Discovering that Shunyata’s Triton AC conditioner improved the low-level resolution of his audio system, he surmised that the Triton may allow him to more clearly see the heart’s tiny electrical signals in a clinical s...

Performance evaluation of an air conditioner using R410a has been evaluated by field measurement pressure and temperature at suction discharge line. Two methods were used for measurement. First, the sensors mounted on outer wall pipe second, inserted into refrigerant flow in pipe. Using second method, is averagely 5.0°C lower 17.8°C higher than that first method. The coefficient performance pow...

In order to solve the problems of a heat pump air conditioner for an electric bus under extreme conditions, such as large compression ratio, high discharge temperature, reduced system performance, frequent shutdown compressor due overheat protection, this paper proposes vapor injection technology with economizer, and carries out theoretical analysis process reveal effect on performance conditio...

Since many household systems are fabricated out of metallic materials, changes to the household environment that accelerate corrosion rates will increase the frequency of failures in these systems. Recently, it has been reported that homes constructed with imported wallboard have increased failure rates in appliances, air conditioner heat exchanger coils, and visible corrosion on electrical wir...

The purpose of this double-blind study was to examine the effects of a 1% hydrocortisone, leave-on conditioner on hematologic and biochemical parameters, adrenal function tests, and cutaneous reaction to serial dilutions of histamine phosphate in healthy dogs and those with pruritic dermatitis. Groups 1 and 2 each consisted of eight healthy dogs. Seven pruritic dogs comprised Group 3. All dogs ...

Installing a ground source heat pump as a means of heating and cooling a house is becoming an increasingly popular alternative to the traditional methods. However, the installation costs being very high, an in-depth study of the configuration of such systems is needed in order to minimize these costs. The relationship between power output and controlable parameters, such as pipe radius and leng...

The results of an analytical-experimental study related to the actual task substantiating comprehensive measures for occupational safety miners in deep coal mines on factors mine air quality based hydrodynamic conditioning processes, which is especially important development autonomous and energy-saving means ensuring miners' standards, are presented. Purpose. goal substantiate analytically mai...

Radiologic supportive examinations are still the primary choice in helping dentists establish a diagnosis and treatment plan. Radiography is basis of diagnostic imaging dentistry because main focus this field hard tissue teeth bone supporting teeth. Dental radiographic examination an that supports establishment diagnosis, making prognosis, planning, to evaluate results has been carried out on p...