1.2 Detalhes do contato das pessoas capacitadas e instituições envolvidas na avaliação e documentação da tecnologia

Nome da(s) instituição(ões) que facilitou(ram) a documentação/ avaliação da Tecnologia (se relevante)

HELVETAS (Swiss Intercooperation)

1.3 Condições em relação ao uso da informação documentada através de WOCAT

O compilador e a(s) pessoa(s) capacitada(s) aceitam as condições relativas ao uso de dados documentados através do WOCAT:

Sim

1.4 Declaração de sustentabilidade da tecnologia descrita

A tecnologia descrita aqui é problemática em relação a degradação da terra de forma que não pode ser declarada uma tecnologia de gestão sustentável de terra?

Não

2.1 Descrição curta da tecnologia

Definição da tecnologia:

A clean energy technology for converting solar energy into heat for warming homes.

2.2 Descrição detalhada da tecnologia

Descrição:

Passive Solar House technology is documented by Sustainable Land Management Project/HELVETAS Swiss Intercooperation with financial support of Swiss Agency for Development and Cooperation.
Households in Bayman Centre experience very cold winters and meeting household energy needs for the Bamyan population is challenging. They mostly rely on unsustainable solutions such as burning manure or mountain shrubs. Shrub harvesting for firewood is a major cause of land degradation in the province. Fuel expenses also deplete the financial resources of an already impoverished population. Also, due to the intense cold, very few activities are possible during the winter. To overcome the challenges of heavy dependence on biomass for winter heating and to improve living conditions, many families in Bamyan Centre are adopting the passive solar technology for improving their living conditions, while reducing pressure on environment.
Passive solar technology captures sunlight in a room or building, and converts that energy into low-temperate heat. It provides an efficient mean of capturing the sun's energy, reducing the need for fuel wood and coal for heating.

(1)The passive solar house (PSH) technology has significant economic, socio-cultural and environmental benefits. They are as follows:
(2)reducing the reliance on shrubs and other heating materials; saving expenditure on fuel (aprox.25,000 Afghani/year) and the time usually spent on harvesting bushes;
(3)provision of extra space in the house for washing/drying cloths, bathing, social activities, play and study area, space for vegetable crops for home consumption; savings due to this technology offset the high initial investment cost;
(4)improved health due to less exposure to cold;
(5)reduced pressure on environment. The technology contributes to re-greening of common lands or rangelands where fewer shrubs are collected (uprooted) for firewood.
PSH should have a Southern exposure to take maximum advantage of the sun for daylight and passive solar heating. Most of the houses in Bamyan have southern exposures. The PSH is generally used for 6 months (November to April).
Although the technology was introduced in Bamyan by GERES, an International Non-Governmental Organization, many families have replicated it without any external support.

The main purpose of Passive Solar House technology is to make use of the solar energy for heating homes. As a result, the need for shrubs and coal for home heating is reduced significantly. The technology contributes to re-greening of common lands or range lands on which shrubs are harvested (uprooted) for firewood. Barat Ali's family bought about 60 donkey loads of shrubs per year for winter heating purposes. They did not have to do that after this technology was implemented by the PSH owner. The technology also contributes to the well-being of all family members, especially of women, who can do their household chores, and children who often got sick due to cold exposure.

The PSH presented here was established in September 2013 before the onset of winter. A transparent plastic sheet, metal pipes, wires and ropes to hold the plastic are used for construction work. Metal pipes were purchased from Kabul by the owner.
The PSH measures 17 m in length, 5 m in width and about 4 m in height. However, the PSH may vary from one house to another. The factor to consider is that the PSH should have long area to capture maximum sunlight. The upper part is slopping (about 30% gradient) to drain the water and snow. Local semi-skilled labor and skilled mechanic for welding the pipes were employed for construction works.
Approximately 45,000 Afghani/790 USD was spent on the construction of this PSH. The owner made significant investment. He purchased the pipes and plastic contributing approximately 70% of the costs. Plastic sheets, which are available on the market in Bamyan, are not of very high quality and have to be replaced each year. If the used plastic sheet is not too damaged, it is placed on roofs to protect from snow water/rain seepage. Otherwise, it is simply thrown away, which is not an environment friendly practice.
According to the PSH owner, a possibility for improvement is to use good quality wooden frame instead of pipes so that the plastic sheet can be kept intact by nailing it to the wooden frame. Using wooden frames may also reduce the cost of the technology, making it more affordable for poor families. Provision for ventilation is an aspect which needs to be considered while constructing PSH.

Bamyan province is a remote province of Afghanistan with high poverty rate. It has a temperate and arid climate. During winter, temperatures can drop below minus 22 degrees. Summer temperature can reach up to 34 degrees in the month of July. The average annual rainfall in the area is about 230 mm and some years can be very dry.
90% of the population relies on subsistence agriculture for their livelihoods and off-farm activities are marginal.

2.3 Fotos da tecnologia

2.5 País/região/locais onde a tecnologia foi aplicada e que estão cobertos nesta avaliação

2.6 Data da implementação

Caso o ano exato seja desconhecido, indique a data aproximada:

• menos de 10 anos atrás (recentemente)

2.7 Introdução da tecnologia

Especifique como a tecnologia foi introduzida:

• através de projetos/intervenções externas

Comentários (tipos de projeto, etc.):

The PSH owner saw the technology applied by others and replicated it without any external support. The technology has been promoted by GERES (an International NGO) in Bamyan.

3.1 Principal/principais finalidade(s) da tecnologia

• Cria impacto social benéfico

3.2 Tipo(s) atualizado(s) de uso da terra onde a tecnologia foi aplicada

Comentários:

Major land use problems (compiler’s opinion): Degradation of common lands due to shrub harvesting for firewood and overgrazing by sheep and goats.
Major land use problems (land users’ perception): Land degradation due to uprooting of shrubs required for domestic purpose like heating homes during winter and cooking.
Constraints of Infrastructure (House): Lack of alternative energy resources. Heavy dependence on biomass for burning.

Longest growing period in days: 180, Longest growing period from month to month: April-September

3.5 Grupo de GST ao qual pertence a tecnologia

• Tecnologias de eficiência energética

3.6 Medidas de GST contendo a tecnologia

Comentários:

Specification of other structural measures: Passive Solar House

3.7 Principais tipos de degradação da terra abordados pela tecnologia

Comentários:

Main causes of degradation: over-exploitation of vegetation for domestic use (Shrubs for fuel wood), overgrazing (Mainly sheep and goats), governance / institutional (Specially relating to common lands), lack of alternative energy options
Secondary causes of degradation: droughts, population pressure

3.8 Redução, prevenção ou recuperação da degradação do solo

Especifique o objetivo da tecnologia em relação a degradação da terra:

• Prevenir degradação do solo
• Reduzir a degradação do solo

4.1 Desenho técnico da tecnologia

4.2 Informação geral em relação ao cálculo de entradas e custos

Outro/moeda nacional (especifique):

Afghani

Se for relevante, indique a taxa de câmbio do USD para moeda local (por exemplo, 1 USD = 79,9 Real): 1 USD =:

57,0

4.3 Atividades de implantação

	Atividade	Periodicidade (estação do ano)
1.	Purchase material from Kabul	September 2013
2.	Construction of PSH using 4 semi-skilled workers for 3 days and one skilled mechanic	September 2013

4.4 Custos e entradas necessárias para a implantação

	Especifique a entrada	Unidade	Quantidade	Custos por unidade	Custos totais por entrada	% dos custos arcados pelos usuários da terra
Mão-de-obra	labour	ha	1,0	190,12	190,12	100,0
Equipamento	plastic	ha	1,0	70,28	70,28	100,0
Equipamento	pipes	ha	1,0	530,31	530,31	100,0
Custos totais para a implantação da tecnologia					790,71
Custos totais para o estabelecimento da Tecnologia em USD					13,87

Comentários:

Duration of establishment phase: 1 month(s)

4.5 Atividades recorrentes/manutenção

	Atividade	Periodicidade/frequência
1.	Maintainance - plastic sheet	As required
2.	Replacement of plastic sheet every year

4.6 Custos e entradas necessárias pata a manutenção/atividades recorrentes (por ano)

	Especifique a entrada	Unidade	Quantidade	Custos por unidade	Custos totais por entrada	% dos custos arcados pelos usuários da terra
Mão-de-obra	labour	ha	1,0	13,78	13,78	100,0
Equipamento	plastic	ha	1,0	68,92	68,92	100,0
Custos totais para a manutenção da tecnologia					82,7
Custos totais de manutenção da Tecnologia em USD					1,45

Comentários:

Machinery/ tools: Plastic Sheets, Pipes, Wires, Generator, Welding Machine
The prices in Afghani are for September 2013. The exchange rate which was used for the conversion of US$ to Afghani was 1 US$ = 57 Afghani.

4.7 Fatores mais importantes que afetam os custos

Descreva os fatores mais determinantes que afetam os custos:

Pipes is the most expensive part of this technology

5.1 Clima

5.2 Topografia

5.3 Solos

5.4 Disponibilidade e qualidade de água

5.5 Biodiversidade

5.6 Características dos usuários da terra que utilizam a tecnologia

Indique outras características relevantes dos usuários da terra:

Land users applying the Technology are mainly common / average land users
Difference in the involvement of women and men: All the PSH construction work is done by men.
Population density: 10-50 persons/km2
Annual population growth: 2% - 3%
100% of the land users are average wealthy.

5.7 Área média de terrenos utilizados pelos usuários de terrenos que aplicam a Tecnologia

5.8 Propriedade de terra, direitos de uso da terra e de uso da água

Propriedade da terra:

• Indivíduo, intitulado

Direitos do uso da terra:

• Indivíduo

Direitos do uso da água:

• Indivíduo

Comentários:

Well belongs to the house owner

5.9 Acesso a serviços e infraestrutura

6.1 Impactos no local mostrados pela tecnologia

Impactos socioeconômicos

Produção

Renda e custos

Outros impactos socioeconômicos

Impactos socioculturais

Impactos ecológicos

Ciclo hídrico/escoamento

Biodiversidade: vegetação, animais

Clima e redução de riscos de desastre

6.2 Impactos externos mostrados pela tecnologia

6.3 Exposição e sensibilidade da tecnologia às mudanças climáticas graduais e extremos/desastres relacionados ao clima (conforme o ponto de vista dos usuários da terra)

Extremos (desastres) relacionados ao clima

Desastres meteorológicos

	Como a tecnologia lida com isso?
Tempestade de vento local	não bem

Outras consequências relacionadas ao clima

Outras consequências relacionadas ao clima

	Como a tecnologia lida com isso?
Intense sun light	não bem

Comentários:

Pipes should be replaced by wooden frames because they get heated up and can damage the plastic. Also, using wooden frames may reduce the cost.

6.4 Análise do custo-benefício

Como os benefícios se comparam aos custos de implantação (do ponto de vista dos usuários da terra)?

Como os benefícios se comparam aos custos recorrentes/de manutenção(do ponto de vista dos usuários da terra)?

Comentários:

The cost of the PSH can be covered in 2 years time. This is only in financial terms but if we analyse the overall economic benefits considering health and ecological benefits, the benefits compared with establishment costs will be more.

6.5 Adoção da tecnologia

De todos aqueles que adotaram a Tecnologia, quantos o fizeram espontaneamente, ou seja, sem receber nenhum incentivo/ pagamento material?

• 91-100%

Comentários:

100% of land user families have adopted the Technology without any external material support
30 land user families have adopted the Technology without any external material support
There is a moderate trend towards spontaneous adoption of the Technology

6.7 Pontos fortes/vantagens/oportunidades da tecnologia

Pontos fortes/vantagens/oportunidades na visão do usuário da terra
Multiple benefits for the family - less expense for fuel, children can play inside in warm climate. It is also a good space for social meetings.

Pontos fortes/vantagens/oportunidades na visão do compilador ou de outra pessoa capacitada
PSH has multiple benefits: house warming using clean energy, less expenditure on fuel for winter, extra room for various activities (like studies, playing, washing, drying clothes, warming water, social meetings), less use of shrubs.
Due to PSH technology, families dependency on shrubs for firewood is reduced which leads to improved land management.
Convinced by the benefits of PSH technology, many families with financial resources have constructed it without seeking external support.

6.8 Pontos fracos, desvantagens/riscos da tecnologia e formas de superá-los

Pontos fracos/desvantagens/riscos na visão do usuário da terra	Como eles podem ser superados?
Metal pipe is not good for frame because the plastic sheet cannot be nailed to it so that it does not get blown away by wind.	Use of wooden frame.
Distance between pipes is more.	More pipes needed to reduce that gap.
The air moisture can increase in the PSH as well as in the other parts of the house.	The door and if possible the window of the PSH should be opened for some minutes during the day.

Pontos fracos/vantagens/riscos na visão do compilador ou de outra pessoa capacitada	Como eles podem ser superados?
PSH does not have proper ventilation.	Construction of a ventilator.
The poor households cannot apply it due to high establishment cost.	Use of low cost wooden frame and some incentives to the poor families for establishment.

7.1 Métodos/fontes de informação