scholarly journals One-Dimensional Analytical Modeling of Pressure- Retarded Osmosis in a Parallel Flow Configuration for the Desalination Industry in the State of Kuwait

2018 ◽  
Vol 10 (4) ◽  
pp. 1288
Author(s):  
Bader Al-Anzi ◽  
Ashly Thomas
Atmosphere ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 678
Author(s):  
Adeeba Al-Hurban ◽  
Sawsan Khader ◽  
Ahmad Alsaber ◽  
Jiazhu Pan

This study aimed to examine the trend of ambient air pollution (i.e., ozone (O3), nitrogen monoxide (NO), nitrogen dioxide (NO2), nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), benzene (C6H6) and particulate matter with an aerodynamic diameter smaller than 10 microns (PM10), and non-methane hydrocarbons (NMHCs) at 10 monitoring stations located in the main residential and industrial areas in the State of Kuwait over 6 years (2012–2017). We found that the SO2 level in industrial areas (0.065 ppm) exceeded the allowable range of SO2 in residential areas (0.030 ppm). Air pollution variables were defined by the Environmental Public Authority of Kuwait (K-EPA). In this study, integrated statistical analysis was performed to compare an established air pollution database to Kuwait Ambient Air Quality Guidelines and to determine the association between pollutants and meteorological factors. All pollutants were positively correlated, with the exception of most pollutants and PM10 and O3. Meteorological factors, i.e., the ambient temperature, wind speed and humidity, were also significantly associated with the above pollutants. Spatial distribution mapping indicated that the PM10 level remained high during the southwest monsoon (the hot and dry season), while the CO level was high during the northeast monsoon (the wet season). The NO2 and O3 levels were high during the first intermonsoon season.


1989 ◽  
Vol 111 (4) ◽  
pp. 837-843 ◽  
Author(s):  
H. Jaber ◽  
R. L. Webb

This paper develops the effectiveness-NTU design method for cooling towers. The definitions for effectiveness and NTU are totally consistent with the fundamental definitions used in heat exchanger design. Sample calculations are presented for counter and crossflow cooling towers. Using the proper definitions, a person competent in heat exchanger design can easily use the same basic method to design a cooling tower of counter, cross, or parallel flow configuration. The problems associated with the curvature of the saturated air enthalpy line are also treated. A “one-increment” design ignores the effect of this curvature. Increased precision can be obtained by dividing the cooling range into two or more increments. The standard effectiveness-NTU method is then used for each of the increments. Calculations are presented to define the error associated with different numbers of increments. This defines the number of increments required to attain a desired degree of precision. The authors also summarize the LMED method introduced by Berman, and show that this is totally consistent with the effectiveness-NTU method. Hence, using proper and consistent terms, heat exchanger designers are shown how to use either the standard LMED or effectiveness-NTU design methods to design cooling towers.


2009 ◽  
Vol 7 (1) ◽  
pp. 95 ◽  
Author(s):  
G.P. Maheshwari ◽  
A. Al Mulla ◽  
Y. Al Hadban

2014 ◽  
Vol 100 ◽  
pp. 27-31 ◽  
Author(s):  
Adnan Husain ◽  
Bondi Gevao ◽  
Basma Dashti ◽  
Abraham Brouwer ◽  
Peter Aleaxnder Behnisch ◽  
...  

2021 ◽  
Author(s):  
M. A. Alolayan ◽  
◽  
F. M. Albarrak ◽  
M. H. Abotalib ◽  
M. A. Alshawaf ◽  
...  

The net benefits and public acceptance for a proposed reform to the current subsidization of energy in the State of Kuwait was investigated in this study. The proposed subsidization suggests that the government pays the consumers the subsidization cost in advance and in exchange for raising the subsidized tariffs to full price. The consumption will likely be reduced by a rate equals the over consumption due to the current subsidized tariffs in relative to the income. The net benefits is expected to be maximized and shifted to a pseudo-equilibrium point where both the governments and the consumers will be better off financially. The public acceptance toward the proposed strategy was examined using 274 voluntarily one-to-one interviews for gasoline and 121 for electricity and water. Also, a utilities meters reading program was conducted on 90 houses out of the 121 interviews for utilities. The interviews for gasoline and utilities indicated 57% and 66% of the respondents see no equity in the current subsidization, 55% and 80% admitted to overuse, and 11% and 21% averages of the over consumptions, and 67% and 66% of the respondents were willing to adopt the new strategy. The consumer is expected to save 912 USD/year from gasoline, and 8,198 USD/year from utilities. The estimated net benefits is 5,841 million USD annually with 62% attributed to utilities benefits and 38% to gasoline benefits.


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