Replacing of Steam Bleeding in a Steam Power Plant by Using Solar Energy

In this paper the use of parabolic trough solar field to rise feed water temperature completely or partially according to brightness of sun is studied, in this way steam bleeding could be avoided variably. Results are analyzed according to Damascus solar and climate data, efficiency is increased about 1.6 % and power raised 6 %.

Analyzing of Convection Heat Transfer in Absorber Tube of Direct Steam Generation Parabolic Trough Collector (DSG-PTC)

Direct steam generation in parabolic trough collector (DSGPTC) has had a great importance because of its thermoeconomic advantages and many researches have be done in this field. Due to that reason this paper studies the convection heat transfer from absorber tube of a PTC to all phases of water (liquid water, wet steam and dry steam) along the whole distance of fixed length of a DSG-PTC generates a high temperature superheated steam (561 °C). All heat transfer operations in PTC has been modelled and then the convection' components which are; fluid temperature, tube wall-fluid temperatures difference and heat transfer coefficient have been analyzed in details at different operation conditions such as inlet fluid pressure, direct solar beam and mass flow.

Employing a Parabolic Trough Solar Power Plant with a Sensible Thermal Energy Storage for Covering Electrical Peak Load in Palmyra

This research shows the necessity of building the solar electric generating system to provide a clean renewable energy and to meet people's needs of electrical energy at Peak-Load to keep a clean environment in Palmyra region. This paper concluded a study of electric generating power plant with 30 MW capacity during day. A part of heat power collected in a solar field is stored in sensible thermal energy storage for covering Electrical Peak Load when the plant operates at night. This research showed the advantage of constructing the solar system with a Parabolic Trough in the solar field. The amount of heat collected during months of the year is high and the hours operating at daytime were great. The building of solar-electric plant is valid technically and economically. This research performed a design of solar field and its Parameters using Computer Program (Language C++) and calculated the most important plant performance during months of the year.