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The Q.B Stove - Philippines by E I Quibilian


Table of Contents

Boiling Point
Front cover of Boiling Point issue 11
Issue 11 (1986) Successful Stove Dissemination

ArticleThe Q. B Stove
AuthorE I Quibilian?
The following brief article reproduced from ESCAP Energy News Vol. 11, No. 2 describes a small, portable, metal, charcoal burning stove recommended for boiling water or cooking rice. The price is not quoted but in view of the metals used it must be high. Details of efficiency measurements and field trials are not given.

[top] [end]Radical Change in Stove Design

The QB Stove (invented by Edelmiro I. Quibilian of the Philippines) is claimed to have an efficiency of 42 per cent following tests conducted by the National Standards and Testing Centre, National Science and Technology Authority, the Philippines. The stove was given the 1984 Philippines Inventors Week Award.

The stove is a radical departure from present stove designs in that it contains advanced energy conservation features such as radiation suppressor and air preheating. It appears and functions like a domestic appliance and includes special equipment for rapid lighting (see diagram below).

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Experience with the stove development programme over the past ten years is that many designs are required to suit local habits. What is interesting in the new design as well as the stove in its own right is that some of the features could be adapted for different designs.

The special, innovative features of the QB stove include:

[top] [end]1. Unmatched thermal efficiency/fuel savings

It has a thermal efficiency rating of 42 per cent, the highest among six other charcoal stoves (mostly cast metal) available in the market. Comparative thermal efficiency tests for these cooking stoves have shown the QB stove to have an efficiency of 42 per cent, being able to boil three litres of water within 14 to 20 minutes. Other stoves had efficiencies ranging from 21 to 32 per cent. The charcoal used in conducting the tests had a heating value of 6,500 calories/gram and a moisture content of 13.2 per cent of the weight. The quantity of charcoal used for the QB stove was 500g whereas the other stoves used 605g to even 1,000g of charcoal.

The QB stove uses only 100-1259 of charcoal or 215g of firewood to cook 1kg of rice. The less efficient stoves consume 30-100 per cent more fuel than the QB stove.

When using the QB stove, between one and one-half sacks of charcoal costing 35-45 pesos ($US 1 = 19.6 pesos) are equivalent to one 11 kg LPG tank costing 126 pesos. The fuel savings achieved are between 81 and 96 pesos per tank of LPG.

[top] [end]2. High Heat Output

The average time to boil 3 litres of water would take 14-20 minutes with charcoal as fuel and 12-15 minutes with wood as fuel. When cooking rice: 1 kg of rice boils in 15 minutes and cooks in 25-30 minutes.

[top] [end]3. Quick Starting of Fire

The QB stove is ready for use two minutes after the fire is started.

[top] [end]4. Easy Addition of Fuel

There is no need to remove the cooking pot when adding fuel.

[top] [end]5. Smokeless Operation (with charcoal as fuel)

This is ideal for indoor kitchens.

[top] [end]6. Safe

Sides of firebox and supporting frame do not heat up. The wooden cabinet top will not char and accidental skin burns are not caused.

[top] [end]7. Portable and Lightweight

The overall stove weighs approximately 5 kg.

[top] [end]8. Neat and Attractive Appearance

The stove comes in 5 different colours (red, green, white, yellow and brown).

The lifetime and cost of the replacement parts are as follows:
Parts Lifetime (minimum) Cost (Pesos)
1. Fuel grate 6 months 7.50
2. Coil 6 months 8.50
3. Innermost (cylinder)1 1/2 years 35.00
4. Ash tray 1 year 12.00

For further information on the QB stove kindly contact:

Mr. Edelmiro I. Quibilian
c/o Energy Research and Development Centre
Philippine National Oil Company
Don Mariano Marcos Avenue
Diliman
Quezon City
Philippines

[top] [end]Contents: Boiling Point 11: Successful Stove Programmes

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BP11: Production costs of Mai Sauki - BP11: Does it pay to make stoves? - BP11: National fuelwood programme of Sri Lanka - BP11: Stove Dissemination in Burkina Faso - BP11: Stove programme guidelines for CILSS - BP11: National stove programme in India - BP11: Chulha programme - Boon or disaster? - BP11: Marketing - The Four "P's" - BP11: A cartoon story - BP11: Energy and rural women's work - BP11: The Q.B Stove - Philippines - BP11: China



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Page created: 29 September 2008; Last edited: 29 September 2008; Version: 0
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Pagename: BP11:TheQBStove-Philippines @HEDON: VVNA