The use of clean fuels like liquified petroleum gas (LPG) instead of the biomass-based fuels used for cooking in developing countries would be beneficial in several ways. However, many rural homes are still dependent on some form of biomass for their cooking needs even though the use of LPG would be considerably less expensive.
Hence Gazel Gaz, along with a consortium with members from the European Community, Dominican partnership and Haitian partners are implementing a programme of enhancing the household use of LPG. From an overview of the cooking fuels used in developing countries, barriers to increasing LPG use - in particular, the problems regarding affordability of equipment, pricing of the product, and reliable distribution - have been identified. In this context, experiences with the expansion of household LPG use in other countries and have been considered and a development programmed has been devised. Finally, based on the challenges recognized, suggestions are being made regarding the policies through which the problems can be overcome.
LPG has several advantages, such as:
Cylinders should be grouped together when the demand from the application is greater than one cylinder alone can supply or when security of supply is a factor. In these cases it is normal to bank cylinders into two groups. Each group being capable of meeting the supply demand from the process. The two groups of cylinders are linked together via an automatic changeover regulator which will maintain the system to the required pressure and swap supply to the heating process from one group of cylinders to the other group, when the first groups of cylinder are empty.
This depends very much on the application, the available space, and the supply logistics. In general, it becomes more economic to supply LPG in bulk when the off-take is consistent, and it is clearly cheaper to transport LPG in bulk quantities than in cylinders. In some cases while it would be cheaper to supply the customer's requirement in bulk, the lack of space to store LPG in bulk becomes a factor and supply via cylinders is maintained.
Vaporisers are heat exchangers, which are used to heat the liquid LPG and convert it to a gas. This is the reason that in many situations the off-take is larger than the natural supply rate of a tank or cylinder. Vaporisers are installed to meet the gas demand by the process. Vaporizers can use the heat provided by hot water, electricity or even LPG from the supply tank.
Automotive LPG - autogas - is recognized as the most important and widely accepted alternative fuel for the automotive sector. It powers almost 10 million vehicles in more than 53 countries.
Global consumption of autogas is more than 16 million tonnes annually. Autogas is used as a motor fuel because of its inherent environmental benefits. It has lower exhaust emissions than petrol, costs less and can reduce engine wear.
Engines in all the following vehicle types listed below can be designed or adapted to run on LPG Autogas. In fact most internal combustion engines are able to be operated successfully on LPG Autogas.
Gazel Gaz will soon announce a list of centers where vehicles can be converted to run on LPG at very reasonable cost.
The following are the benefits of converting vehicles to LPG:
In general the answer is no. The reasons are listed below:
It depends on the technology involved, but generally when a engine is dual fuelled it is likely that it will not be optimized to operate on both fuels, the engine will be tuned to run somewhere between the best performance for both fuels.
You should not lose any performance by changing your vehicle over to LPG. However, a vehicle operating on LPG will use approximately 20% to 30% more fuel than petrol on a volume basis. This increased usage is generally more than offset the lower price of LPG compared to petrol.
Most vehicle manufacturers recognize the viability of LPG as an automotive fuel and continue to maintain the warranty on engines properly converted to LPG use where the installation and equipment meet all local standards. If there is any doubt check with the vehicle manufacturer or vehicle agent.
Firstly, the stop start nature of the forklift operation makes the use of LPG a favourite with forklift users, where the cold start and short running of these vehicles produces excessive engine wear. Secondly, the other benefit of operating these vehicles on LPG is the reduction of the exhaust gas emissions compared to diesel and petrol fuelled vehicles. In the generally enclosed environment that forklifts vehicles operate in, emission reduction plays an important part in the health of the workers and improved environmental hygiene, reducing the potential of damage to sensitive products. However it should be remembered that proper ventilation must still be maintained and that the general reduction of exhaust emissions does not preclude the necessity to provide a safe operating and well ventilated working environment.
Liquefied petroleum gas is a flammable gas which has the potential to create a hazard. Therefore it is important that the properties and safe handling of LPG are understood and applied in the domestic and commercial/industrial situations.
There are a number ways in which you can greatly reduce LPG consumption and thus help the overall conservation of LPG:
You can use LPG safely if you apply simple safety rules.
In general the answer is no. The reasons are listed below:
The design of the gas converter or gas regulator, installed within the engine space that provides fuel to the engine, is generally designed to take liquid LPG and convert it to vapour LPG. Usually a small bore copper or steel line is used to transfer the Liquefied petroleum gas from the cylinder in the rear of the vehicle to the engine. This is because domestic cylinders are installed into the rear of the vehicle in an upright or lying-on-the-side position.
In both the above cases, only vapour gets transferred from the cylinder to the engine. This is because the cylinder does not have an internal tube that takes the liquid Liquefied petroleum gas from the cylinder into the supply line to the engine. Due to this, the engine gets starved for fuel during increased load conditions like accelerating or climbing up a slope.