Economic Analysis Of Combined Solar- Assisted Ejector Absorption Refrigeration System

摘要

A procedure is presented for assessing the economic viability of combined solar-assisted ejector absorption refrigeration system in terms of the life cycle savings function. The optimization is carried out for a combined system that has been designed for Malaysia and similar tropical regions using ammonia-water as working fluid. The life cycle savings is expressed in a generalized form in terms of two economic parameters, P_1 and P_2, which relate all life cycle cost considerations to the first year fuel cost or the initial solar system investment cost. The typical meteorological year file containing the weather parameters for Malaysia is used to calculate the monthly average daily radiation and solar fraction. An example for economical evaluation and optimization is presented. The optimum system for Malaysia's climate for a 5 kW (1.5 refrigeration ton) system consists of 35 m~2 evacuated tubes solar collector sloped at 15°.