2 edition of organic rankine cycle coupled to a solar pond by direct-contact heat exchange found in the catalog.
organic rankine cycle coupled to a solar pond by direct-contact heat exchange
John D. Wright
by Solar Energy Research Institute, Available from the National Technical Information Service, U.S. Dept. of Commerce in Golden, Colo, Springfield, VA
Written in English
|Statement||John D. Wright ; prepared for the U.S. Department of Energy.|
|Series||SERI/TR -- 631-1122.|
|Contributions||Solar Energy Research Institute., United States. Dept. of Energy.|
|The Physical Object|
|Pagination||viii, 29 p. :|
|Number of Pages||29|
The turbogenerator uses the hot temperature thermal oil to pre-heat and vaporize a suitable organic working fluid in the evaporator (8 3 4). The organic fluid vapor powers the turbine (4 5), which is directly coupled to the electric generator through an elastic coupling. The exhaust vapor flows through the regenerator (5 9) where it. concentrating solar using heliostats hot salt thermal storage of solar energy
An organic rankine cycle coupled to a solar pond by direct-contact heat exchange. by John D. Wright 1 edition - first published in Not in Library. and SORC-RO system using low grade heat sources the most energy efficiency MED-Double absorption heat pump combined system has the heat to water consumption is kJ/kg and solar energy to water consumption is kJ/kg Rfa Ra Solar Field Output (kW) Heat to Water (kJ/kg) Cycle Efficiency % %.
Selection of a working fluid for an organic Rankine cycle coupled to a salt-gradient solar pond by direct-contact heat exchange, J. Sol. Energy Eng. World Bank. A Water Sector Assessment Report on the Countries of the Cooperation Council of the Arab States of the Gulf. This chapter discusses the application of organic molecules in engineering thermodynamics: being used as working fluid in refrigeration and the organic Rankine cycle. There are, in general, two points of view that may be adopted in the engineering thermodynamics: the macroscopic point of view and the microscopic point of view.
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Organic rankine cycle coupled to a solar pond by direct-contact heat exchange - selection of a working fluid - NASA/ADS. Heat from a solar pond may be used to drive an organic Rankine cycle and produce electricity. Due to the inherent low efficiency of low temperature cycles, large amounts of heat must be transferred, and heat exchangers may account for up to 50% of the plant : J.
Wright. An organic rankine cycle coupled to a solar pond by direct-contact heat exchange: selection of a working fluid Author: John D Wright ; Solar Energy Research Institute. Direct-contact condensers for an organic Rankine cycle solar pond power plant are compared with conven tional shell-and-tube condensers.
Three types of direct contact systems are evaluated: drop type, bub ble type, and packed columns. Methods used in the design of the direct contact. The combined system is composed by three sub-systems: main ﬂow (water ﬂow within solar collectors), ORC and ACS (Fig. The organic ﬂuid pressured by the pump is heated, then evaporated and superheated on the heat exchanger in contact with the water ﬂow (main ﬂow) from solar by: An analysis was conducted of power production by an organic Rankine cycle engine coupled to a solar pond with direct-contact heat exchange.
Use of a direct-contact boiler reduced the projected plant cost by 25 percent. The choice of a working fluid affects plant Cited by: Design of Organic Rankine Cycle systems for use with solar collectors Once the temperature regime of the system is determined, the next important specification is the selection of an ORC working fluid, which influences the expander configuration via the pressure–volume ratio of the ORC and the size of heat exchangers for thermal input and heat rejection.
How An Organic Rankine Cycle Engine Works a With Solar Concentrator The Organic Rankine Cycle is a thermodynamic cycle which converts heat into work. The heat is supplied externally to a closed loop, which usually uses water as working fluid.S imply put, the working fluid (usually water) is.
An analysis was conducted of power production by an organic Rankine cycle engine coupled to a solar pond with direct-contact heat exchange. Use of a direct-contact boiler reduced the projected.
J.D. WrightSelection of a working fluid for an organic Rankine cycle coupled to a salt-gradient solar pond by direct-contact heat exchange. J Sol Energy-T ASME, (4) (), pp.
Google Scholar. Solar pond coupled desalination also involves the use of the hot brine from the pond as a thermal source to evaporate the water to be desalted at low pressure in a multiple-effect boiling (MEB) evaporator.
The low pressure is produced by vacuum pumps powered by the electricity produced by the organic Rankine cycle (ORC) engine. Hybrid operation of the gas turbine is considered. In order to further improve the overall cycle efficiency, the combined operation of the gas turbine and an Organic Rankine Cycle is investigated.
The ORC can be coupled to the solar-thermal gas turbine cycle at the intercooler and after the recuperator. Therefore, waste heat from different. The organic Rankine cycle (ORC) is commonly accepted as a viable technology to convert low temperature heat into electricity. Furthermore, ORCs are designed for unmanned operation with little.
In organic Rankine cycles, efficiency improvements can be achieved through regeneration by integration of regenerator or feedliquid heaters or by operation taking place above the critical point in transcritical or supercritical cycles.The Clausius–Rankine cycle constitutes the basic cycle for vapor-based heat engines and is widely used for power generation in thermal power plants.
Use of solar energy can reduce the load on the conventional energy sources. Solar parabolic trough collector (PTC) system is employed as the evaporator of the solar organic Rankine cycle (SORC) system. Working fluid for the subcritical ORC is Rfa.
Reciprocating piston type expander is used for the expansion of the working fluid. About this book. About this book. Compared to the conventional Rankine cycle using water, the ORC can create efficient expansion at low power, avoid superheater and offer higher thermal efficiency in low temperature application.
Small-scale ORCs from several kWe to a few hundred kWe offer great potential for meeting the residential demand on heat and power, and are of growing interest in scientific and.
The Organic Rankine Cycle is named for its use of an organic, high molecular mass fluid with a liquid-vapor phase change, or boiling point, occurring at a lower temperature than the water-steam phase change. The fluid allows Rankine cycle heat recovery from lower temperature sources such as biomass combustion, industrial waste heat, geothermal heat, solar ponds etc.
The low-temperature heat is. Abstract: This paper presents an organic Rankine cycle (ORC) system for combined heat and power utilizing solar thermal energy and natural gas as well.
The ORC investigated in this work consists of a heat source, an evaporator, a scroll expander, a condenser, a fluid pump, a. Waste heat recovery is one of the most important development fields for the organic Rankine cycle (ORC), where a low boiling point organic fluid is used as a working medium.
The ORC can be applied to heat and power plants or to industrial and farming processes. Some heat sources, like hot exhausts from furnaces, which contain particles or sulfide might harm pipes of an evaporator.
Sofretes (France) installed a number of 1 kW solar pumps in different countries in Africa in the late s. The pumps were powered by flat-plate solar collectors, coupled via a heat exchanger, to a reciprocating Organic Rankine Cycle (ORC) engine operating at about 80°C.
The majority of these are now abandoned. In this paper, an innovative new design of multi effect desalination coupled with mechanical vapor compression (MED-MVC) powered by supercritical organic Rankine cycle utilizing a low grade solar.
Use of Organic Rankine Cycles for Waste Heat Recovery and Solar Applications. in Partial Fulfillment of the Requirements for the Degree of Doctor of Applied Sciences Presented to the Faculty of Applied Science of the University of Liège (Belgium) by Sylvain Quoilin Liège, October Experimental and Techno-Economic Analysis of Solar-Geothermal Organic Rankine Cycle Technology for Power Generation in Nepal Article (PDF Available) in International Journal of Photoenergy Stefansson, ).
Therefore binary power plants, like the Organic Rankine Cycle (ORC) or Kalina Cycle, are suitable as power generation units.
In these systems the thermal energy of the geothermal fluid is coupled to a secondary thermodynamic cycle, where a low-boiling working fluid is evaporated at a moderate pressure level.