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8 Antonino La Rocca et al.
end users facilities and returning to the regasification site, is made via a gaseous
phase CO2 pipeline (the pressure losses along the flow path are accounted in the
design of the service cycles, see Figs. 6 and 7).
Fig. 4 – The Service Cycle for the Agro Food Factories (La Rocca, 2010).
Fig. 5 – The Service Cycle for the Hypermarket (La Rocca, 2010).
The pumping process of the CO2 in liquid phase is a good practice for
saving energy (Dispenza et al., 1979).
The process proposed works at hypercritical pressures (LNG in the
regasification process has pressure lying in the range 80 ÷ 75 bar).
3.1. The Feasibility Study
The recovery of cold from LNG regasification in the proposed process
considers two kind of facilities as end user: first a cluster of Agro Food
Factories, where there is need of cold for the freezing process of foods and to
maintain these at low temperature; second Supermarkets and Hypermarkets
where the need of cold is mainly for space air conditioning and some cold is
required for the refrigeration of display cases and cabinets in the sales area and
for the preparation of foodstuffs and their cold storage in cold storage rooms.