The Lotus burner is a single burner with modifications for primary air mixing and flame length using biogas as a fuel. The Lotus burner is intended for domestic use with decentralized biodigesters and stemmed from a research initiative funded by SNV and the National Biogas Programme of Cambodia. The Lotus stove was derived from the widely distributed Nepal biogas burner. For September 2018, this product is discontinued.
DTW is located in Phnom Penh, Cambodia.
Market Suggested Retail Price
Distributors / Implementing Organizations
The National Biodigester Programme has a retail sale office where interested customers can go in person to purchase a biogas stove. Development Technology Workshop designed and manufactures the lotus stove. Netherlands Development Organization (SNV) supported the design and actively distributes the stove among their project partners.
It used to be mass produced, however, for September 2018, the manufacturing of this product is unknown.
Intellectural Property Type
User Provision Model
Users can obtain the product from the National Biogas Programme retail office. The NBP office receives the stoves from the manufacturer, Development Technology Workshop.
Distributions to Date Status
20 bored D shaped burner ports at 5.5 mm wide and 4.5 mm deep on the vertical face of the burner. Premixed flame with varying stove body configurations to match end-user preference.
Provided by the manufacturer, Development Technology Workshop.
Rubber o-ring in the tap every 3-4 years interview with representative
5 - 6 years interview with representative
Manufacturer Specified Performance Parameters
Carbon monoxide emissions (PPM), flue temperature, thermal efficiency and time to boil.
Vetted Performance Status
Available upon request to the manufacturer email with representative: The efficiency and gas consumption at ACTUAL CONDITIONS (T=21oC and P=1011mBar), the efficiency and gas consumption at STP (With T=0oC and P=1013..25mBar), Flame behaviour (with cooking vessel and without cooking vessel), wind sensitivity (with cooking vessel, without cooking vessel), the temperature at the base of the stoves after 1 hour use with a 35 cm cooking vessel on a wooden table, CO production at different aeration positions, flame extinction due to flame lift, need for regular maintenance of the stove i.e. oiling of the gas tap; rigidness against rough usage.
Be sure to use a flame arrestor to prevent upstream flame propagation.
Complementary Technical Systems
Varying types of biodigesters.
Academic Research and References
SNV Netherlands Development Organisation, Khandelwal, K. C., & Gupta, V. (2009, February). Popular Summary of the Test Reports on Biogas Stoves and Lamps prepared by testing institutes in China, India and the Netherlands. SNV Netherlands Development Organisation.
Decker, T (2017). A modeling tool for household biogas burner flame port design. Colorado State University.
Compliance with regulations
National Standard of the People’s Republic of China on Domestic Biogas Stove: GB/T 3606-2001.