Based on the thermodynamic properties of HCFC123 obtained by using a modified Benedict-Webb-Rubin (MBWR) equation of state fit to experimental measurements, the theoretical performance of HCFC123 has been assessed as an alternative to CFC11 by using standard refrigeration parameters, including...

This paper discusses the theoretical differences in performance between using R-12 and R-22 resulting from changes in thermodynamic properties. It also assesses the potential for using R-22 as a replacement for R-12 by considering a case study of an R-12 reciprocating air-conditioning unit...

In this paper the isotropic sky method of Liu and Jordan is used to theoretically estimate the monthly average daily and hourly solar radiation impinging on an unshaded tilted surface in Dhahran, Saudi Arabia. The surface receiving solar radiation is assumed to be fixed at a tilt angle, β,...

Conservation of useful form of energy, i.e. electricity to be used in the production sector rather than consumption sector is becoming a priority in the KSA (Kingdom of Saudi Arabia). One of the consumption sectors which utilize a large amount of electrical energy is the air-conditioning and...

The design and performance of the Ghazlan power plant (Kingdom of Saudi Arabia) are described. The study is based on first- and second-law analyses. A full exergy analysis is carried out to identify the potential for improving the plant efficiency. The exergy analysis shows a detailed breakdown...

We present a procedure for optimization of the first and second reheat pressures in thermal power plants. The analysis is based on the first-law efficiency and exergy-balance equations. For analysis, the plant is divided into two main units (the steam generator and the turbine cycle). The...