Tek kademeli geleneksel buhar sıkıştırmalı soğutma çevrimi için R12, R22, R134A ve R404A soğutucu gazları kullanılmıştır. 4 gaz evaporatör sıcaklığı 263K, kondenser 303K, kütlesel debi 0,654(kg/s) kompresör izentropik verimliliği (0,7), ısı kaybı faktörü (%0,7), giriş 278K olarak belirlenmiştir. Evaporatör kapasitesinin (%0,7) azaltılmasıyla belirlenen yeni değer ile bir karşılaştırma yapılmışt...

The crystal structure investigation of the title compound 4-((pyrrolidin-1-ylsulfonyl) methyl)aniline (PSMA) C11H16N2O2S shows that molecule is essentially coplanar with a dihedral angle 26.70(14)°between pyrrolidine and benzene rings. A pair strong N-H···O hydrogen bonds produces continuous two-dimensional sheets R22(18) ring motifs. also features weak C-H···π interaction resulting in three-di...

The paper presents a study of refrigerants and some issues relating to their environmental impacts in HVAC&R equipment. They are treated aspects of the environmental pollution through the working fluids of the air-conditioning, refrigeration and heat pump systems, and a new strategy in using refrigerants in accordance with the international legislation is described. Additionally, this study pre...

The title compound, C12H20N4O5, crystallizes in the monoclinic space group P21, with four crystallographically independent mol-ecules in the asymmetric unit. The four mol-ecules have a very similar conformation that is basically determined by the formation of two intra-molecular hydrogen bonds between the amino NH2 donors and the carbonyl and ring O-atom acceptors, forming, respectively, R(6) a...