due to climate changes in recent years, in order to attain comfort and convenience, demands for heating, ventilating, and air conditioning (hvac) systems have been increased around the world, which has led to increases in emissions and power. desiccant cooling systems (dcss) are designed and built to reduce moisture and power consumption, create comfortable conditions for people in a building, ...

today air conditioning systems have been considered by all people as one of welfarerequirements in buildings and closed environments. since a considerable part of energy lossoccurs in ordinary modern systems, new strategies and solutions are developed in the field inorder to save amount of energy consumption and observe environmental considerations. fuzzycontrol is one of these methods which pr...

The stagnation of Dennard scaling along with the move towards heterogeneous 2.5D and 3D ICs is increasing thermal design power (TDP) envelopes general-purpose CPUs. With conventional cooling approaches such as air-cooling cold plates, it challenging to meet these increased requirements. Moreover, requirements necessitate larger management overheads in datacenter settings. All trends point need ...

In conventional vapor compression systems, electronic expansion valves (EXVs) are used for refrigerant flow control. Subcooled refrigerant enters the expansion device and is expanded to the evaporation pressure while the valve opening is modified to achieve the desired mass flowrate. The relationship between the inlet and outlet conditions, the opening, and the mass flowrate has been extensivel...

Regarding the power, the efficiency and the discharge questions of the low-speed diesel engine, this article studied emphatically the Miller cycle, the analysis technology for the air intake system, and the matching technology for the intake and the exhaust. On the foundation of the twin inlet structure the paper analyzed the intake swirl control area and its influence to the gas charging effic...

The traditional blade cooling method can no longer meet the requirements of high efficiency in modern engines. In order to solve this problem, paper proposes turbine guide blades based on liquid metal. feasibility was preliminarily verified using a one-dimensional heat conduction model. Then, numerical method, we found that effect metal is much better than air cooling. main reason for its good ...

The dehumidifier is a key component in liquid desiccant air-conditioning systems. Analytical solutions have more advantages than numerical solutions in studying the dehumidifier performance parameters. This paper presents the performance results of exit parameters from an analytical model of an adiabatic cross-flow liquid desiccant air dehumidifier. Calcium chloride is used as desiccant materia...

Gas turbine (GT) performance is primarily dependent on the inlet air temperature. The power output of gas flow mass through turbine. This why at hot weathers with less dense air, drops, but cold weather high rises. cooling (IAC) technology one major drivers that enhance performance, especially during weathers. affected by various factors such as cooling, fuel type, heating value, temperature, h...

A numerical investigation was conducted to study the heat transfer in an aircraft cabin and the effects of air distribution under different angle and inlet velocity conditions. The Reynolds-averaged Navier–Stokes equations and the low Reynolds number turbulence model were used to simulate the airflow in the cabin. Mathematical statistics was used to process the relevant data, and statistical re...