Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Adnan H. Ayub"'
Autor:
Wasim Shah, Ahmad Abbas, Zahid H. Ayub, Adnan H. Ayub, Tiago Augusto Moreira, Gherhardt Ribatski, Wei Li
Publikováno v:
International Journal of Refrigeration. 147:1-9
Autor:
Wei Li, Tariq S. Khan, Tauseef Ismail, Adnan H. Ayub, Gherhardt Ribatski, Zahid H. Ayub, Ahmad Abbas
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
This paper presents the experimental results of saturated two-phase flow ammonia in a vertical shell and tube heat exchanger comprising of seven dimpled enhanced tubes. The tests were conducted for a wide range of parameters. The heat load was provid
Publikováno v:
Applied Thermal Engineering. 152:559-572
Steady state numerical simulations were carried out with twisted tapes on shell side of a shell and tube heat exchanger. Thermal hydraulic performance of a heat exchanger with various twisted tape widths and twist ratios was conducted. The effects of
Publikováno v:
International Journal of Refrigeration. 99:408-418
Plate heat exchangers are widely used in the industry. Being compact in nature, they are good candidates to be used as evaporators with reduced charge. A review of the existing evaporation heat transfer coefficient data for plate heat exchangers has
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 43
Single-phase heat transfer and pressure drop tests were conducted in a tube with two types of twisted tapes. Each tape had exactly similar physical parameters and were made of the same material except that each had an opposite twist that resulted in
Publikováno v:
Applied Thermal Engineering. 134:248-255
A unique shell and tube heat exchanger with interstitial twisted tapes was tested with propylene glycol/water solution. Propylene glycol concentration was varied between 0 and 40% by volume. Same size conventional shell and tube exchanger with single
Publikováno v:
Heat Transfer Engineering. 39:1425-1436
Shell and tube heat exchangers are widely used for various industrial refrigeration applications. This paper summarizes previous studies performed on single tube and bundles and the correla...
Publikováno v:
International Journal of Refrigeration. 82:11-21
In the present study, tests were performed to investigate the direct expansion evaporation characteristics of ammonia on shell side of triangular pitch plain tube bundle at saturation temperature of −1.7 °C and −20 °C, with heat flux ranging fr
Publikováno v:
International Journal of Refrigeration. 78:70-82
This paper presents the experimental results of shell side dry expansion evaporation characteristics of ammonia on a triangular pitch plain tube bundle in a multi pass cross flow configuration evaporator. Heat exchanger had 4 passes with 3 plain tube
Shell side direct expansion evaporation of ammonia on a plain tube bundle with exit superheat effect
Publikováno v:
International Journal of Refrigeration. 76:126-135
There are no data available on the direct expansion evaporation of refrigerant on the outside of a tube bundle. With the current ozone depletion and global warming issues it is critical to develop systems with low charge refrigerants especially with