Irfan Wazeer

Current status and future directions of MED-TVC desalination technology

AbstractDesalination has now become one of the major water treatment processes in several countries around the world where shortage of water is a serious problem. Energy consumption is a vital economic factor in selecting the type of desalination processes because current desalination processes require large amount of energy which is costly. Multi-effect desalination system with thermal vapor compression (MED-TVC) is particularly more attractive than other thermal desalination systems due to its low energy consumption. MED-TVC is characterized by high performance ratio, easier operation, low maintenance requirements and simple geometry. These attractive features make MED-TVC highly competitive to other well-established desalination techniques that include the reverse osmosis and multi-stage flash desalination. The primary goal of this paper is to present a preview of some aspects related with the theory of the technology, parametric study of the MED-TVC systems and its development. It will analyze the cur...

Economic optimization of the number of effects for the multieffect desalination plant

AbstractThe multieffect desalination (MED) process is one of the most efficient thermal desalination processes due to its low energy consumption. Due to the recent developments in the desalination industry, latest desalination plants are more cost effective than the older technology-based plants. The primary goal of this paper is to investigate a mathematical model of an MED system in such a way that, it is able to predict the optimum number of effects. The number of effects for a specific plant is a major factor in determining thermal economy and capital amortization. Also the gain output ratio of an MED unit is totally dependent on steam economy and is directly proportional to the number of effects. The total cost of water is dependent on two chief costs: steam cost and capital cost. In this paper, a compromise has been made between these two costs to find optimum number of effects that would produce the minimum sum of the two cost components.

Optimization of location of thermo-compressor suction in MED-TVC desalination plants

AbstractMulti-effect desalination with thermal vapor compression (MED-TVC) is particularly more attractive than other thermal desalination systems due to its low energy consumption. One of the major component of MED-TVC desalination system is thermo-compressor. The overall efficiency of the system is directly influenced by the performance of thermo-compressor. It enhances system’s efficiency by reducing the energy consumption. The location of the steam extraction has a great effect on the performance of the MED-TVC plants. Higher gained output ratio of the desalination plant can be obtained at the optimum position of vapor extraction in the MED-TVC system. The optimization of location of suction position of thermo-compressor in MED-TVC desalination plants could result in maximization of gain output ratio (GOR) and consequently reduction in energy consumption. Furthermore, increasing the suction pressure also results in decreasing the energy consumption of the system. Therefore, this work will analyze the ...