id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
alkej-90	AL Mukhtar, Riyadh S.; AL Hemeri, Shurooq T.; Mahmood, Lina W.	دراسة المحتوى الحراري لتفكك الكلاثريت (لغاز التبریدR134a الرطب) بالنظامين الثنائي والثلاثي	2018	11	.pdf	application/pdf	5126	270	53	,[8] who performed the experimental measurements to conditions of gas hydrates dissociation were undertaken at range of temperatures and pressures , by using binary and ternary system which consist of refrigerant gases as (R134a, R410a, and R507) with salt aqueous solutions for various salt concentrations. Peng–Robinson equation which is one of the cubic equation of the state given by [23]: Z= � � �- � � � � ������� �� ...(3) Where Z= � � � � …(4) Tr= � �� …(5) Pr= � �� …(6) a(T)=0.457235������ �� α(T) …(7) b=0.077796( � �� �� ) …(8) The expression proposed by Smith H.etal., [24] is used for the α: α(T)=(1+k(1−TR))2 …(9) k=0.37464+1.54226w−0.26992w2 …(10) Equation (3) rearranged to give [25]: Z3+βZ2+γZ+δ=0 …(11) A= a P ���� …(12)	cache/alkej-90.pdf	txt/alkej-90.txt