In this paper, the effect of surface roughness on the mass flow rate through adiabatic
capillary tubes was analyzed. Initially, relevant information about the surface roughness of …

Helically coiled capillary tubes flow is characterized for transcritical CO 2 refrigerant
numerically, developing theoretical model established on fundamental equations of mass …

Numerical studies on straight and spiral capillary tubes are addressed for the CO2 and R22
refrigerant. A homogenous, one-dimensional steady-state adiabatic flow model is developed …

This paper presents a numerical study on an adiabatic helical capillary tube employing
homogenous and choked flow conditions of a CO2 transcritical system. The theoretical …

In this paper, an algebraic solution to study adiabatic coiled capillary tubes in transcritical
CO 2 cycle was proposed. This solution evaluated three different friction factors and three …

Flow characteristics of an adiabatic spiral and a helical capillary tube in a CO2 transcritical
system are numerically simulated. A homogeneous two-phase flow model is developed …

This paper presents a numerical study of the flow characteristics of R22 refrigerant flowing
through adiabatic helically coiled capillary tube. The theoretical model is based on …

A detailed literature review on the flow characterization of the capillary tubes is presented in
this paper. The flow behavior is reviewed for straight, helically, and spirally coiled capillary …

Bombas de calor são equipamentos usados para o aquecimento de ambientes, para o
fornecimento de água quente ou para outros fins de aquecimento. O número desses …

A comparative study on an adiabatic straight and helical capillary tube employing
homogenous flow conditions for a CO 2 refrigerant. The numerical model is based on the …