Focus: InnovationScience • R&D • TechnologyThe Hygroscopic cycle for CSP
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The benefits in action
The following is an example where the performance of a solar thermoelectric plant with cylindrical-parabolic collector technology located in the southwest of Spain, is compared to a similar plant using the Hygroscopic cycle technology instead of the Rankine cycle. We will maintain the same values of the steam conditions (pressure and temperature) at the inlet and outlet of the turbine.
The power of the plant is 50MWe using a conventional Rankine cycle and wet cooling (by means of cooling
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Experimental study on the influence of the saline concentration in the electrical performance of a Hygroscopic cycle
2020, Applied Thermal EngineeringCitation Excerpt :The liquid condensate stream is rich in hygroscopic compounds and has a higher salt concentration than the steam (2) since the selected hygroscopic compounds are not volatile. In Fig. 3, Tc denotes the condensing temperature of the vapor in the steam absorber and Tv designates the saturation temperature [48] of exhaust steam. In the steam absorber, complete condensation of the steam occurs by absorption, releasing the heat of dilution [49] that is defined as the heat exchanged with the medium when an additional amount of solvent is added to a solution.
Influence of cooling temperature increase in a hygroscopic cycle on the performance of the cooling equipment
2019, Energy Conversion and ManagementCitation Excerpt :It is due to the concentration of hygroscopic compounds in the cooling reflux stream provided by the cooling system. Due to absorption process, the condensing temperature of the vapor in the steam absorber is greater than the saturation temperature of exhaust steam (Tc > Tv in Fig. 3), for the same condensing pressure [44]. Vacuum pump extracts air and other non-condensing gases from the steam absorber.
Advantages of incorporating Hygroscopic Cycle Technology to a 12.5-MW biomass power plant
2018, Applied Thermal EngineeringCitation Excerpt :In this device, the condensing temperature is increased above the saturation temperature of the pure steam for a given pressure in the steam absorber. In essence, if Ta is the condensing temperature in the steam absorber, and Tv is the water saturation temperature at the steam absorber pressure (Pa), being Ta > Tv [36]. Ta value depends on the molality of the cooling reflux stream.