DESIGN OPTIMIZATION FOR A SOLAR AIR-CONDITIONING SYSTEM
ABSTRACT A design optimization and a cost-effectiveness analysis were performed for a solar air-conditioning (A/C) system for a new building located at the Kuwait Institute for Scientific Research (KISR). A basic design was prepared, and a computer model was used to evaluate the performance of alternative components in terms of type, size, mode of operation and control and to come out finally with an optimum design for the system. The optimally designed solar A/C system did not prove to be cost-effective at the present time, even when the unsubsidized price for energy is used and the system is credited adequately for its electical and thermal displacement capacities.
Unlike onshore wind farms,the harsh weather conditions(wind and waves)have greater impacts on the offshore wind farm operation and maintenance(OM).Taking fully into account of the influence of offshore weather conditions,the paper classifies the OM strategies of offshore wind turbines into several categories by the components and their respective repair time required by auxiliary equipment.Based on this classification,a new method of availability evaluation of wind turbines with different offshore conditions is presented.A case study demonstrates that the proposed approach can deal with various offshore conditions and OM strategies.The sensitivity analysis shows the significance of such strategies on the offshore wind OM availability as an effective technical support.