Performance of Steam Injected Stoves
Alexis Belonio, Central Philippines University, April 4, 2007

[img_assist|nid=1579|title=Comparison of Steam Injected Stove Technology|desc=|link=node|align=center|width=600|height=451]

Schematic Super Turbo Rice Husk Gasifier

Super Turbo Rice Husk Stove (5.5 kW) for Small-Cottage Industry Use
Alexis T. Belonio, Appropriate Technology Center (APPROTECH), Central Philippine University, Ioilo City, Philippines March 28, 2007

Good news and glory to God!

A larger-scale super turbo rice husk stove that injects super-heated steam into the burning chamber was recently developed for small cottage industry use. By injecting super-heated steam into the stove’s burning chamber, a luminous pinkish-flame, which is rich in hydrogen gas, is obtained. While cooking, the stove produces clean gas that is released to the atmosphere.

This technology is another breakthrough in biomass stove research and development of the Appropriate Technology Center of the Department of Agricultural Engineering and Environmental Management, College of Agriculture, Central Philippine University, Iloilo City. This project was collaboratively assisted by the following agricultural engineering students of CPU namely: Daniel Belonio, Lucio Larano, Ian John Fabellore, Mark Alvin Almazan, and Clark Ian Sansolis.

As schematically shown below, the stove consists of a conical hopper that is made of GI sheet no. 16 where rice husk is being fed for burning inside the combustion chamber, a 5 liter capacity steam tank which boils the water and converts it into super-heated steam, a combustion chamber cover having a diameter of 30 cm that also supports the steam tank, a 2-in. diameter air pipe which supplies the air needed for the combustion of rice husk, a char discharge lever that allows the removal of burnt rice husk during operation, a steam burner that is made of 2-in. diameter stainless steel pipe that ignites hydrogen gas from the steam, a 12-mm diameter round bar support to firmly hold the stove, and pot holder to support the cooking pot.

Dual-Reactor Rice Husk Gasifier for 6-Tonne Capacity Recirculating-Type Paddy Dryer
Alexis T. Belonio, Central Philippine University, Iloilo City, Philippines August 29, 2006

Paddy Gasifier 4
Paddy Gasifier 4

Rice husk, which is a by-product of milling of rice, is a potential biomass material that can be used to replace diesel fuel that is commonly used in a recirculating- type grain dryer. Gasifying rice husk on a top-lit updraft (T-LUD) mode was proven to produce quality flame that approaches the quality of that of diesel. Using gasifier, combustible gases can be piped-in through a remote burner for direct use by the dryers. Since, T-LUD type rice husk gasifier normally operates on a batch mode, a dual-reactor rice husk gasifier was designed and developed so that the reactor can be alternately ran thereby continuous drying operation can be achieved.

Rice Husk Quasi-Gasifier Stove With Side-In Steam
Alexis T. Belonio, BSAE, MSc, Central Philippine University, Iloilo City August 24, 2006

Ric Husk Gasiifer 1Ric Husk Gasiifer 1

Plant oil-powered stove catches Gloria’s fancy
Manila Standard Today, Philippines, May 19, 2006

President Gloria Macapagal Arroyo yesterday ordered the mass production and distribution of a new cooking device that runs on oil harvested from plants to 18 “hotspot” urban poor areas all over the country.

Mrs. Arroyo said the Leyte State University should fast track the production of Protos, which can run on jatropha oil, among other plant-based oil products, to help Filipino consumers cope with the rising cost of living.

“We will support the mass production and distribution of this cooking oil in 18 hotspots in the country to benefit those living in urban poor areas,” she said.

The Leyte State University is producing Protos, which is manufactured by German firms Bosch and Siemens Home Appliances Group.

Mrs. Arroyo said while the introductory price at P2,000 may be considered prohibitive, mass production will eventually lower the price of the plant oil-powered appliance.

Protos, also known as jatropha stove, was officially launched in Malacañang yesterday.

The President also ordered the immediate release of P500 million for the Philippine National Oil Co. for the planting of jatropha plants, locally known as tuba-tuba or tubang-bakod.

Socioeconomic Planning Secretary Romulo Neri said the country imports about $7 billion worth of oil and petroleum products, 25 percent of which is diesel. Once the jatropha methyl ester product is mass-produced, it can translate to a savings of $1.75 billion.

The PNOC and the Armed Forces have signed an agreement for the conversion of idle lands in military camps into plantations for jatropha, a potential biofuel source.

Another P500 million will be sourced from National Development Co. for the mass production of jatropha cooking oil and jatropha methyl ester as an alternative gasoline blend.

Lt. Gen. Romeo Tolentino of the Northern Luzon Command said 150 hectares have been allotted by the Armed Forces for the test planting of jatropha.

The Camarines Sur provincial government has also set aside 10,000 hectares of land in the towns of Lagonoy, Caramoan, Presentacion, Pili, Calabanga and Sipocot to serve as jatropha farms.

According to Jun Lozada, president of the Philippine Forest Corp. which is a subsidiary of the Department of Environment and Natural Resources, about P50 million of the P500 million PNOC budget will be used for further research.

“Per hectare, a jatropha farmer can earn P10,000 to P15,000 for the first year, and after five years that will plateau at P60,000 per hectare,” Lozada said.

Neri, however, gave a conservative view on the private production of jatropha oil products. “Let’s give it one year with the Philippine Army first. I do not want to be overoptimistic because this is still in the testing stage although some people are making glowing remarks over this.”

Jatropha planted from seedlings would start yielding fruits after six months, while those planted from cuttings would have an earlier yield at one to two months.

The University of the Philippines-Los Baños is now developing the protocol for the tissue culture of jatropha to mass produce the plant cuttings.

UPLB aims to come up with a high-quality jatropha seedling that is free from viruses, bacteria and fungi.

Strategies for Enhancing Biomass Energy Utilization in the Philippines (4 MB pdf) October 2001

R. Samson, T. Helwig, D. Stohl, A. De Maio, and P. Duxbury

Rice Husk Furnace for Recirculating Type Paddy Dryer (pdf)
Alexis Belonio, Central Philippine University, Iloilo, Philippines May 2006

LoTrau Stove, Mayon Turbo, IRRI

See also: REAPMayon Turbo Rice Hull Stove
Appendix 2. Rice hull cookers


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