Working-fluid selection and thermoeconomic optimisation of a combined cycle cogeneration dual-loop organic Rankine cycle (ORC) system for solid oxide fuel cell (SOFC) waste-heat recovery

Application of cascading thermoelectric generator and cooler for waste heat recovery from solid oxide fuel cells

Progress in solid oxide fuel cell-gas turbine hybrid power systems: System design and analysis, transient operation, controls and optimization

Thermodynamic assessment of a novel multi-generation solid oxide fuel cell-based system for production of electrical power, cooling, fresh water, and hydrogen

Exergy assessment and optimization of a cogeneration system based on a solid oxide fuel cell integrated with a Stirling engine

Combined solid oxide fuel cell, micro-gas turbine and organic Rankine cycle for power generation (SOFC–MGT–ORC)

Thermo-environ analyses of a novel trigeneration cycle based on clean technologies of molten carbonate fuel cell, stirling engine and Kalina cycle

The Finnish Government target of carbon neutrality by 2035 is challenging for the district heat (DH) systems of Finnish cities, as nearly 50% of the DH fuels are still fossil or peat. The DH price in Finnish cities is rising intensively. To avoid energy poverty, it is imperative to develop low-carbon DH solutions affordable for all customers. The feasibility of various low-carbon scenarios supplying a DH network is investigated with three different energy renovation levels. Biomass combustion technologies (combined heat and power (CHP) and heat only boiler (HOB)) and waste heat recovery technologies (Heat Pump and Electric Boiler) are analyzed. The economic and sensitivity analyses of the DH network are carried out from utility and end-user viewpoints. The operation cost and break-even price of heat are calculated in different renovation levels. Biomass HOB has the lowest operation cost at all renovation levels followed by waste heat-heat pump. Waste heat-heat pump + electric boiler has the lowest total cost, 53–58 €/MWh, at all renovation levels. Waste heat recovery scenarios were found sensitive to changes in electricity price. Waste heat-heat pump has the lowest overall emissions, whereas biomass combustion causes high emissions of biogenic CO2, NOx and particulate matter. 

/pdf/sustainable-heating-alternatives-for-1960-s-and-1970-s-1udt8c48.pdf

Sustainable heating alternatives for 1960's and 1970's renovated apartment buildings

Green hydrogen production for oil refining – Finnish case

This study examines how long-term and short-term energy crises may affect heat production in low-carbon District Heating (DH) networks. For this purpose, various scenarios decarbonizing DH network are investigated mainly in two groups, i.e., biomass combustion scenarios and waste heat-based scenarios. The duration of the hypothetical energy crisis is assumed as 3 years (Short-term Energy Crisis) and 10 years (Long-term Energy Crisis), and it is defined as a sharp increase in the electricity and biomass prices compared to the average prices over 2015-2020. Heat Production Cost (HPC), and Break-Even Price (BEP) are calculated and compared in various scenarios. The results show that in both long-term and short-term energy crises, biomass CHP has a significantly better performance compared to biomass HOB and waste heat-heat pump, but it provides much more expensive heat as the end-use product. Biomass HOB and waste heat-heat pump perform very similarly.

Iraj Moradpoor

Papers

Combined solid oxide fuel cell, micro-gas turbine and organic Rankine cycle for power generation (SOFC–MGT–ORC)

Thermo-environ analyses of a novel trigeneration cycle based on clean technologies of molten carbonate fuel cell, stirling engine and Kalina cycle

Sustainable heating alternatives for 1960's and 1970's renovated apartment buildings

Green hydrogen production for oil refining – Finnish case

How do Long-term and Short-term Energy Crises Affect Low-Carbon District Heating Production?-A Case Study in Finland