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Effective cooling of gas turbine combustor liners, combustor transition pieces, turbine vanes (nozzles) and blades (buckets) is a critical task to protect these components from the flue gas at extremely high temperature. Air film cooling has been successfully used to cool these hot sections for the last half century. However, the net benefits from the traditional methods seem to be marginally i...

In this paper, using parabolic mirrors, a solar field was designed, which was related to a storage tank for a residential complex in the city of Tafresh located in the center of Iran. The design was performed for the existing oils: VP1, THERMINOL 66, THERMINOL 59. Finally, considering an organic cycle with R123 as working fluid and assuming a minimum length required for oil flow rate to reach a...

Thermal management is a critical issue in integrated circuit (IC) design. With each new IC technology generation, feature sizes decrease, operating speeds increase, and package densities increase, contributing to larger power consumption and elevated die temperatures. Higher temperatures are detrimental to circuit behavior and reliability. Furthermore, hot spots due to spatially non-uniform hea...

In various applications, thermoelectric active cooling systems can help maintain electronic devices at a desired temperature condition better than passive coolers. Thermoelectric Coolers (TEC) are especially useful when the temperature of a device needs to be precisely controlled. This study proposes a user-friendly graphical method for calculating the steady-state operational point of a TEC ba...

The need of cooling arrangement for DC motor is very important to reduce the frame size of the motor. It required to select the effective cooling arrangement of the DC motor based on the application, surrounding of the motor installation and power consumption. DC motors are the workhouse variable speed drives in the continuous steel rolling mills for many years. DC motors in the steel rolling m...

In the present era of energy crisis, effective and energy efficient air conditioning is a need of time. Advanced evaporative cooling is able to replace conventional air conditioning. This paper identifies the major cities of India and investigates scope and potential of evaporative cooling over entire period of year using feasibility index method. Initially paper describes basic and advanced me...

Oocyte cryopreservation is of key importance in the preservation and propagation of germplasm. Interest in oocyte cryopreservation has increased in recent years due to the application of assisted reproductive technologies in farm animals such as in vitro fertilization, nuclear transfer and the need for the establishment of ova/gene banks worldwide. However, the cryopreservation of the female ga...

We review the progress on laser cooling of solids. Laser cooling of ion-doped solids and semiconductors is based on the anti-Stokes fluorescence, where the emitted photons have a mean energy higher than that of the absorbed photons. The thermodynamic analysis shows that this cooling process does not violate the second law, and that the achieved efficiency is much lower than the theoretical limi...