Geothermal and solar energy–based multigeneration system for a district

Abstract

Summary In this study, parabolic trough collector with an integrated source of geothermal water is used with regenerative Rankine cycle with an open feedwater heater, an electrolyzer, and an absorption cooling system. The absorption fluids used in the solar collectors were Al2O3‐ and Fe2O3‐based nanofluids. Detailed energetic and exergetic analyses are done for the whole system including all the components. A comparative analysis of both the used working fluids is done and plotted against their different results. The parameters that are varied to change the output of the system are ambient temperature, solar irradiance, the percentage of nanofluids, the mass flow rate of the geothermal well, the temperature gradient of the geothermal well that had an effect on the net power produced, and the outlet temperature of the solar collector overall energetic and exergetic efficiencies. Other useful outputs by this domestic integrated multigeneration system are the heating of domestic water, space heating (maintaining the temperature at 40°C‐50°C), and desalination of seawater (flash distillation). The hydrogen production rate for both the fluids diverges with each other, both producing average from 0.00490 to 0.0567 g/s.

Geothermal energy extraction using abandoned oil and gas wells:Techno‐economicand policy review

“…Another aspect that may need further investigation is the combination of geothermal energy extraction from abandoned oil well with other renewable energy, as has been investigated by Ratlamwala et al 177 for conventional geothermal. The use of solar thermal energy to upgrade the geothermal heat can be an option to improve the efficiency of the system.…”

Application of the concept of a renewable energy based‐polygeneration system for sustainable thermal desalination process—A thermodynamics' perspective

“…Recently, several studies tackled the design and analysis of novel multigeneration systems utilizing different renewable energy sources. Some proposed designs operate with solar energy‐based systems, 4-6 wind and solar hybrid systems, 7,8 solar‐ocean hybrid system, 9 solar and hydrogen‐based systems, 10 solar and geothermal‐based systems, 11-13 biomass‐based systems, 14,15 etc.…”

Geothermal driven micro-CCHP for domestic application – Exergy, economic and sustainability analysis

“…Recognition and accommodation of several factors were addressed and discussed in that study, which could enhance the design and implementation of any geothermal heating or cooling 3 system. Ratlamwala et al [11] proposed a geothermal-driven solar-boosted cogeneration system for a domestic area to supply power and district heating/cooling, while hydrogen and freshwater were produced as byproducts. A sensitivity analysis with a change in the ambient temperature, solar irradiation density, and geothermal resource condition on the system performance was performed.…”