ASPECTE ALE TRANSFERULUI DE CALDURA IN CONDENSATORUL INSTALATIILOR FRIGORIFICE

Autor/autori: Nicolae BARA

Rezumat: Condensatorul frigorific este un schimbator de caldura in care agentul frigorific isi schimba starea de agregare, trece din vapori in lichid cu cedare de caldura. In instalatia studiata in aceasta lucrare aerul preia caldura rezultata din condensarea agentului frigorific. Transferul de caldura se realizeaza prin suprafata extinsa formata din nervurile ondulate de la suprafata tevilor condensatorului. In lucrarea de fata se determina coeficientul de transfer de caldura pentru aer in diferite conditii.

Cuvinte cheie: caldura, condensator, convectie, condensare

Abstract: The refrigerated condenser is a heat exchanger in which the refrigerant changes its state of aggregation, changes from vapors to liquid with heat losses. In the installation studied in this paper the air take the resulted heat from the condesation of the refrigerant. The heat transfer is achieved through the flat surfaces made from the corrugated rib of the surfaces of the condenser tube. In this present paper are determined the heat transfer coefficient for air under various conditions

Keywords: heat, condenser, convection, condensation

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