DTW Lotus Biogas Burner

Target SDGs

Market Suggested Retail Price

$24.50

Target Users (Target Impact Group)

Household, Small and Medium-sized Enterprises

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.

Competitive Landscape

Direct competitors include Puxin JZZ2-A13 and Montals F2-m Biogas Stove.

Manufacturing/Building Method

It used to be mass produced, however, for September 2018, the manufacturing of this product is unknown.

Intellectural Property Type

Select 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

10,000 sets per year since 2009.

Design Specifications

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.

Product Schematics

Technical Support

Provided by the manufacturer, Development Technology Workshop.

Replacement Components

Rubber o-ring in the tap every 3-4 years  ^{interview with representative}

Lifecycle

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.

Safety

Be sure to use a flame arrestor to prevent upstream flame propagation.

Complementary Technical Systems

Varying types of biodigesters.

Academic Research and References

Compliance with regulations

National Standard of the People’s Republic of China on Domestic Biogas Stove: GB/T 3606-2001.

Evaluation methods

Carbon monoxide emissions (PPM), flue temperature, thermal efficiency and time to boil.

Other Information

None.