scholarly journals Physiological aspects of increased CO2 concentration

1980 ◽  
Vol 36 (7) ◽  
pp. 786-792 ◽  
Author(s):  
H. van Keulen ◽  
H. H. van Laar ◽  
W. Louwerse ◽  
J. Goudriaan
Keyword(s):  
Co2 Concentration ◽  
Increased Co2 Concentration

scholarly journals Feeding a Gas Turbine with Aluminum Plant Exhaust for Increased CO2 Concentration in Capture Plant

2014 ◽  
Vol 51 ◽  
pp. 411-420 ◽  
Author(s):  
Kristin Jordal ◽  
Rahul Anantharaman ◽  
Magnus Genrup ◽  
Thor Aarhaug ◽  
Jørn Bakken ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Co2 Concentration ◽  
Aluminum Plant ◽  
Increased Co2 Concentration

scholarly journals Absorption of CO2 With Amines in a Semiclosed GT Cycle: Plant Performance and Operating Costs

1998 ◽  
Author(s):  
A. Corti ◽  
L. Lombardi ◽  
G. Manfrida
Keyword(s):  
Flow Rate ◽  
Power Plants ◽  
Energy Requirement ◽  
Co2 Concentration ◽  
Combined Cycle ◽  
Plant Performance ◽  
Co2 Removal ◽  
Additional Costs ◽  
Increased Co2 Concentration ◽  
Removal System

A CO2 removal system, using aqueous solutions of amines, is applied to a Semi-Closed Gas Turbine/Combined Cycle (SCGT/CC) power plant. The SCGT/CC is interesting because of the possibility of achieving low emissions at the stack, with a decreased overall flow rate, lower NOx concentration and an increased CO2 concentration (over 15% in volume), which facilitates the removal treatment. Several compositions of the absorbing solution have been investigated, by means of simulations with ASPEN PLUS. A 18% DEA + 12% MDEA composition resulted the most convenient in terms of flow rate and energy requirement for the stripping. A cost analysis of the removal plant allows to estimate additional costs for CO2 removal with respect to conventional power plants.

scholarly journals The Greenhouse Effect Calculations by an Iteration Method and the Issue of Stratospheric Cooling

2020 ◽  
pp. 1-18
Author(s):  
Antero Ollila
Keyword(s):  
Greenhouse Effect ◽  
Iteration Method ◽  
Radiative Forcing ◽  
Climate Models ◽  
Co2 Concentration ◽  
Transient Climate Response ◽  
Effective Radiative Forcing ◽  
Stratospheric Cooling ◽  
Temperature Impacts ◽  
Increased Co2 Concentration

The anthropogenic global warming theory is based on the greenhouse effect (GH), which is due to the longwave (LW) absorption by GH gases and clouds according to the IPCC. This LW radiation downward is the imminent cause for the GH effect increasing the surface temperature by 33°C. It has been shown that latent and sensible heating are essential parts of downward LW radiation and the total GH effect. In this study, an iteration method utilizing this basic GH effect mechanism has been applied to simulate the warming impacts of enhanced GH effect changes. The results are compatible with the Transient Climate Response (TCR) of 0.6°C. The issue of stratospheric cooling due to increased CO2 concentration has been calculated and analyzed. The stratospheric cooling effect is real but its impact on the Effective Radiative Forcing (ERF) has been shown to be negative and not positive as generally implied. The reason is that the decreased absorption of LW radiation in the atmosphere always decreases the GH effect. This result challenges the new concept of the ERF that is the sum of Instantaneous RF (IRF) and rapid adjustments as applied in General Climate Models (GCMs). If the stratospheric adjustment has the opposite effect, then the IRF values would be also wrongly calculated in these models. Two independent validation methods were applied to test the temperature impacts of CO2 concentration increases.

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