In this article, by using fuzzy AHP and TOPSIS technique we propose a new method for project selection problem. After reviewing four common methods of comparing alternatives investment (net present value, rate of return, benefit cost analysis and payback period) we use them as criteria in AHP tree. In this methodology by utilizing improved Analytical Hierarchy Process by Fuzzy set theory, first...

Many end-users for the stormwater harvesting systems are reluctant in implementing system due to uncertainties of potential returns their investment such system. A common practice presenting benefit a certain is through calculation payback period using net annual from Traditional doing analysis rainwater tanks was considering individual building/roof, volume, and specific cost. It not feasible ...

The importance of solar energy is increasing due to climate change and similar reasons. However, the biggest barriers investments are high initial investment cost long payback period. In this study, effects technological developments in period examined. It has been investigated how increase PV panel efficiency affects systems. annual average profit, daily gain be obtained according different va...