CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Celle a combustibile per la micro generazione Alberto Zerbinato

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Project Overview and Research Objectives Project idea –To develop a 30kW micro CHP system able to provide heat and power for a more efficient energy end-use in buildings. –The main objective of Sidera 30 is to introduce the novel concept of a Polymeric Electrolyte Membrane (PEM) Fuel Cell In the EU there is a need for improved energy end-use efficiency Centralized CHP System Local Heat&Power Distribution System Future Building

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Project Overview and Research Objectives Project idea –tHE CHP system is able to satisfy both the thermal (heating and sanitary water), cooling and electrical power need of the whole building replacing the small methane boiler installed in the single flats as well as old-fashioned centralised oil thermal plant used in the 60s.

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie

Functional Layout Methane, methanol or bio-gas feed the catalytic burner. Its main functions are: 1.Raise of reformer’s temperature in order to activate the catalytic reactions; 2.Production of steam to be injected into the process together with methane 3.Combustion of anodic Exhaust Gas

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Catalytic steam reforming The endothermic reaction is: CH 4 + H 2 O  3H 2 + CO taking place in the presence of a proper catalyst as well as in a proper temperature range ( °C) Up to 50-60% of H 2 in the reaction products Desulfurizer The gas is filtered in order to assure the membrane longer life time Functional Layout

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Water gas shift It consists in converting carbon monoxide in carbon dioxide and again hydrogen CO + H 2 O  CO 2 + H 2 The water gas shift reaction is an exothermic reaction taking place between CO and H 2 O in a proper temperature range (250 – 400°C)  less than 1% of CO left in the syn-gas) The gases pass through the first heat exchanger and their temperatute decrease from 700 / 800° C to less than 400°C Functional Layout

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Final conditioning in the fuel processor Selective oxidation of remaining CO (PrOx) The chemical reaction is: CO O 2  CO 2 The process consists in promoting the selective oxidation of the remaining CO in the mixture (CO < 15 ppm) in a temperature range of °C The gases go through the second heat exchanger and their temperature decreases from circa 400°C to less then 200°C In the last heat exchanger H 2 temperature still decreases to suitable values for feeding PEM fuel cell Functional Layout

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie Functional Layout

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie 8 High Temperature Water Natuaral Gas Air Anodic Exhaust GasLow Temperature Water Medium Temperature Water Electrical Connections Water Hydrogen / syn gas Functional Layout

CREA 2008IL FUTURO E’ VERTICALE ICI Caldaie THANK YOU