Communication Dans Un Congrès Année : 2015

Solar thermo-hydraulic engine for combined heat, cold and electricity production for the residential sector

Remy Borgogno
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  • PersonId : 784547
  • IdRef : 204779421
Gilles Marck
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  • PersonId : 768431
  • IdRef : 167720317
Mauran Sylvain
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  • PersonId : 923344
Driss Stitou

Résumé

This article presents a solar driven thermo-hydraulic system actuated by the low-grade solar thermal energyproduced by flat plate solar collectors. This solar process aims at providing heat or cold production or electricity generation. This innovative system is made of two integrated thermo-hydraulic processes: a CHV3T sub-system that ensures the cold or heat production and a CAPILI sub-system dedicated to the electricity generation. The CHV3T sub-system is a trithermal process resulting from the combination of two dithermal systems, the motor cycle producing work to drive the receiver cycle who produced cold or heat. The dithermal systems operate with different working fluids and are mechanically coupled with an hydraulic process, that is a transfer liquid acting as a liquid piston. The engine cycle is used to convert the lowtemperature driving heat into hydraulic energy that is transferred to the liquid piston within a transfer cylinder. The receiver cycle uses this hydraulic energy, provided by the liquid piston, to perform the compression step of the refrigerating cycle. In the frame of domestic use, the engine and refrigerating dithermal cycles allow producing either a subsequent amount of cold at the evaporator of the receiver cycle, or a larger amount of heat by means of the condensers of the receiver and engine cycles. When cooling or heating needs are not required, the receiver sub-system cycle of the CHV3T is isolated and the engine cycle operates as a CAPILI cycle in order to drive a Francis-type hydraulic turbine for electricity generation. A quasi-static model of the whole system is developed in order to define the best operating conditions. The results enable the selection of the best couple of working fluids for production of heat, cold and electricity, with preferably low GWP working fluids. In addition, a parametric study helps to design the hydraulic Francistype turbine that is required for a small-scale pilot of 1kWel.

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Dates et versions

hal-04818244 , version 1 (04-12-2024)

Identifiants

  • HAL Id : hal-04818244 , version 1

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Remy Borgogno, Gilles Marck, Mauran Sylvain, Driss Stitou. Solar thermo-hydraulic engine for combined heat, cold and electricity production for the residential sector. 28th Int. Conf on Efficiency, Cost, Optimization, Simulation, ECOS 2015, Jun 2015, Pau (FRA), France. ⟨hal-04818244⟩
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