Cooking in PNGs are generally faster than on LPG. Further, PNG is safer to operate as methane is lighter than air and chances of build up of gases and explosion risk is low as compared to LPG. Methane also burns more cleaner than Propane and Butane, but the risk is it requires more air or ventilation to burn efficiently.
The need of the hour is to explore other models like biogas. Biogas plants can work on hub and spoke models in dense socieities, where the wet and biodegradable waste can be fed to a biogas plant in an area, which in turn generates biogas which can be used in the households thereby eliminating both waste and fuel problems.
But since PNGs have lower pressure, wouldn't it take more time to cook on it compared to LPG? I don't know where is your claim is coming from. Rest of the points are completely valid.
Talking about biogas, it is even worse when it comes to heating capacity. Rather than standlone biogas, its blending with PNG is worth tracking. We currently have 1% blending rates, these should shoot up to 3-5%.
The heat obtained per kg of fuel combusted is highest for methane compared to other hydrocarbons (50000 kJ/kg vs 45000 kJ/kg for propane and butane), but LPG is higher on a volume basis (kJ/m3).
This has also been a personal experience as well, as cooking is faster after switching over to PNGs (but this could also be due to retrofitting LPG stove to PNG)..
You're right in low calorific values of biogas. However, since the source of biogas is local, there may be more benefit in blending and reducing geopolitical shocks.
Would be very cool if the Daily Brief does an article on coal to gas and waste to syn-gas technologies! And also the Rainmatter Foundation does some great work, they need to feature on your newsletters and YouTube videos!
Cooking in PNGs are generally faster than on LPG. Further, PNG is safer to operate as methane is lighter than air and chances of build up of gases and explosion risk is low as compared to LPG. Methane also burns more cleaner than Propane and Butane, but the risk is it requires more air or ventilation to burn efficiently.
The need of the hour is to explore other models like biogas. Biogas plants can work on hub and spoke models in dense socieities, where the wet and biodegradable waste can be fed to a biogas plant in an area, which in turn generates biogas which can be used in the households thereby eliminating both waste and fuel problems.
But since PNGs have lower pressure, wouldn't it take more time to cook on it compared to LPG? I don't know where is your claim is coming from. Rest of the points are completely valid.
Talking about biogas, it is even worse when it comes to heating capacity. Rather than standlone biogas, its blending with PNG is worth tracking. We currently have 1% blending rates, these should shoot up to 3-5%.
The heat obtained per kg of fuel combusted is highest for methane compared to other hydrocarbons (50000 kJ/kg vs 45000 kJ/kg for propane and butane), but LPG is higher on a volume basis (kJ/m3).
This has also been a personal experience as well, as cooking is faster after switching over to PNGs (but this could also be due to retrofitting LPG stove to PNG)..
You're right in low calorific values of biogas. However, since the source of biogas is local, there may be more benefit in blending and reducing geopolitical shocks.
To reduce dependence on imported sources of LPG, can coal gasification be a source of natural gas for India in the wake of the gas crisis? We have lots of coal which we can turn into gas. Shekhar Gupta from the Print has done a video on this. Also see: https://thesecretariat.in/article/turning-coal-into-security-india-s-answer-to-the-hormuz-energy-risk
Also waste gasification is a good idea:
https://www.youtube.com/watch?v=zm0jslIE1kk
https://www.youtube.com/watch?v=c_bNmiDYn5g
https://www.youtube.com/watch?v=UcR0uNA0y9g
Thanks for sharing these resources!
Would be very cool if the Daily Brief does an article on coal to gas and waste to syn-gas technologies! And also the Rainmatter Foundation does some great work, they need to feature on your newsletters and YouTube videos!
That's very insightful Veeresh. Thank you so much for sharing this with us.
But tell us one thing, slow cooking isn't a big inconvenience for you, compared to what all you could do with an LPG?