Energetic performance of different expansion valves in a supermarket (Contributo in atti di convegno)

Type
Label
  • Energetic performance of different expansion valves in a supermarket (Contributo in atti di convegno) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sergio Bobbo, Roberto Camporese, Laura Fedele, Mauro Scattolini, Biagio Lamanna (2005)
    Energetic performance of different expansion valves in a supermarket
    in IIR International Conference - Commercial Refrigeration, Vicenza, 31 agosto - 2 settembre 2005
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sergio Bobbo, Roberto Camporese, Laura Fedele, Mauro Scattolini, Biagio Lamanna (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per le Tecnologie della Costruzione, Consiglio Nazionale delle Ricerche, Corso Stati Uniti, 4, 35123 Padova, Italy CAREL S.p.A., Brugine (PD), Italy (literal)
Titolo
  • Energetic performance of different expansion valves in a supermarket (literal)
Abstract
  • Adopting electronic expansion valves in the refrigerated display cabinets of many supermarkets enables an ap-preciable energy saving vis-à-vis the same installations equipped with thermostatic expansion valves. This is due to the fact that electronic valves enable a lower condensation pressure in the systems with air cooled condensers, which is adjusted to variations in outside air temperature. This paper reports the preliminary results of an inves-tigation conducted at a supermarket in central Italy where the display cabinets were operated alternately with thermostatic and electronic expansion valves. The switch from one type of valve to the other was scheduled on a daily basis. The preliminary results of a campaign of measurements that will extend from December 2004 to December 2005 show that using electronic valves at the supermarket in question gives rise to a mean saving on the electrical energy absorbed by the normal- and low-temperature compressors that varies between 20% and 35%, depending on the time of year. (literal)
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