Toxicity of Fluorinated Hydrocarbon Compounds used as Refrigerants

Comparative Performance of Hydrocarbon Refrigerants

Measurements on R600a refrigerators have shown electricity savings over R134a and R12 up to 20%. We propose new parameters which are functions of well known refrigerant properties. These parameters show that R600a has half the leakage, pressure loss and condenser pressure and double the heat transfer coefficient of R12 and R134a explaining the measurements. Use of R600a in small heat pumps and ...

Synthesis and Evaluation of New Fluorinated Anti-Tubercular Compounds

Treatment of tuberculosis (TB) and the discovery of effective new anti tubercular drugs is one of the most urgent priorities in health organizations all around the world. In the present study, fluorinated analogs of some of the most important anti-TB agents such as p-aminosalicylic acid (PAS), thiacetazone and pyrazinamide were synthesized and tested against TB. The fluorinated analog of thiace...

Synthesis and Evaluation of New Fluorinated Anti-Tubercular Compounds

Treatment of tuberculosis (TB) and the discovery of effective new anti tubercular drugs is one of the most urgent priorities in health organizations all around the world. In the present study, fluorinated analogs of some of the most important anti-TB agents such as p-aminosalicylic acid (PAS), thiacetazone and pyrazinamide were synthesized and tested against TB. The fluorinated analog of thiace...

Hydrocarbon Toxicity: A Review of Literature and Case Series

HFC & HC Blends as Refrigerants

The blends formed mixing hydrofluorocarbons (HFC) and hydrocarbons (HC) can be classified as semi-natural refrigerants since, by optimizing the composition, it is in principle possible to adapt basic features such as GWP, TEWI and flammability to the industrial and environmental requirements. However, the energetic efficiency must be competitive with the traditional refrigerants. To evaluate th...