Background: The thermal conductivity of fluids can be calculated by several computational methods. However, these methods are reliable only at the confined levels of density, and there is no specific computational method for calculating thermal conductivity in the wide ranges of density. Methods: In this paper, two methods, an Artificial Neural Network (ANN) approach and a computational method ...

This study was conducted with the central aim of ascertaining the socioeconomic impacts of kerosene (paraffin) pricing on alternative sources of energy in Ibadan, a city in South West Nigeria. Data were collected through a survey of residential properties in Ibadan metropolis. Both descriptive statistics and multinomial logistic regression model were used for the empirical analysis. The models ...

Air conditioning contributes significantly to building energy consumption in hot climate regions. In addition to greater cooling requirements in hot climates, cooling equipment efficiency decreases with increasing outdoor temperature. Therefore, it is advantageous to develop improved technologies that can achieve higher efficiency at high ambient conditions. In this paper, two novel compression...

In modern condensers of air conditioning systems, heat pumps, evaporators seawater desalination and heaters power plants, the process vapour condensation is carried out mainly inside horizontal tubes channels. Heat transfer processes occurring in have a significant effect on overall energy efficiency mentioned systems. this paper, experimental investigation during freons R22, R406a, R407c plain...