자전거 발전기의 모습

열심히 만든 자전거 발전기입니다.

여러붑품을 이용해서 실험실에서 테스트용으로 만든것 같습니다.

베터리를 이용해서 만들어 내는데
전압이 무척 힘이 많이 들어가는 것처럼 보입니다.

정지하니까 바로 서 버리네요.

그리고 일반적인 자전거를 약간은 분해해서 만들어야 한다는 어려움이 있습니다.

그래도

확인해 보세요..

통나무 포장

이런 포장은 아무나 하는 것은 아니지요...
인내와 등등 뭐 돈 주고 하려고 해고 어려운 작업입니다.
스스로 혼자 묵묵히 해야하는 일인것 같습니다.

혹시 남는 나무는 많고 그걸 어떻게 처리할지 몰라서 고민하시는 분은 한 번 도전해 보세요...
하 어려운 일임은 분명합니다.

그래도 너무나 멋집니다.

예술품이지요...

어려운일.... 

그러나 멋진일... 

바다에 있는집 - 친환경적인 시스템

백년이 넘은 집이지만 

아직도 사람이 살고 있으며 지금은 여러가지 지속가능한 시스템을 갖추고 있다. 

채양광발전, 빗물저장 장치,해수변환장치 등 

 모든것을 떠나 사방에서 바다가보인다는 것은 정말 신기한 일이다.

퍼머컬쳐의 기본윤리

퍼머컬쳐의기본적인 윤리
1. 지구를 보호하라:모든 생명시스템의 지속과 다양화를 생각해야한다.
2. 사람들을 보호하라.: 모든 사람들은 생존에 필요한 자원에 접근가능해야한다.
3. 인구와 소비에 대한 제한: 우리의 욕구를 조정한다면 우리는 자원을 더나은 미래를 위해 남겨놓을 수 있다.

해석이 좀 어렵네...
여러가지정의가 있을 수 있으나 이렇게 나눌 수 있다고 한다.

우리나라 생태공동체

대부분이 그런지는 모르겠지만
잘 알지도 못하지만

우리나라 생태공동체는 일을 많이 하는것 같다

많은 노력과 희생 그리고 밤낮이 없는 일들
농사, 작업, 등등 너무 많은 일을 하기 때문에 이들이 과연 행복할까 하는 생각을 한다..
신념이 있으니 가능하겠지만
그것이 약간이라도 무너지면 어려워 질 것으로 보인다.

노동이 많으면 힘들다.
술마시고 놀고 하면서 보내는 시간이 좋다는 것은 정말 아니지만

편안하게 자기를 성찰할 수 있는 시간이 필요한것은 아닌가?
그리고
노동을 적게 하면서 지낼 수는 없는 것인가?

어렵지?

그것에 대한 이야기도 찾아볼 필요가 있는 것 같다.

일반적으로 공동체는 얼마만큼의 노동을 하는가?

컨테이너 하우스

중고 컨테이너를 이용해서 

집은 아니지만 아이들이 모이고 정리할 수 있는 곳을 만들어야 한다... 

지형은 경사가 져 있고, 아애에 퍼골라가 있고 등등 그렇게 되어 있다. 

참고 사진으로는 

이미지만 봐도 좋기는 한데 이것에 대한 실질적인 설계도가 필요한것도 있다... 

어떻게 구멍을 뚫어야 해?

빗물을 모으고 쓰기

Rainwater Retention&Reuse



Introduction
Since antiquity, rainwater has been harvested for human use. Water is simply captured and stored for reuse in the home or, more commonly, for irrigation. Rainwater storage also reduces peak flows to the river during storm events. High stormwater flowrates can cause erosion, silting of rivers, an increase in river temperature, and runoff can add significant amounts of pollution to the ecosystem.



Discussion
A simple system is a rain-barrel located at the bottom of a downspout, in which water is collected from an impermeable surface (like a roof, but possibly a driveway or patio) and diverted through a gutter system. Options include a means of filtering out dirt and leaves before the water is stored.

The amount of water that must be stored depends on the catchment area (roof area), and the rainfall patterns (time, intensity, and duration) of the region. In regions where there is a lot of rainfall, smaller systems (if any) are required as a buffer between rain events. In dryer regions, rainwater harvesting is more important as there are longer periods between rainfalls. It is, therefore, desirable to store as much water as possible during a rain event.

In the case of a residential home, the collection of rainwater from driveways and patios can be simply proper drainage to a swale (an area that will hold water rather than allowing it to drain through the stormwater collection system directly to the river). Driveways can contain oils that are harmful to the ecosystem. Roof materials should be chosen to keep water a pure as possible – asphalt shingles or roofing materials containing lead should be avoided as they may contaminate the rainwater.

Roofs are particularly useful for collection because they are not only impermeable, but already elevated to allow for inexpensive gravity drainage to the collection system. If the collection system is elevated, gravity drainage may be used for irrigation. Sometimes the rainwater may be stored underground in large cisterns and the water must be pumped out to be used.

Retained rainwater is particularly suitable for irrigation – the system is simply delaying the rain from falling on the landscape. Unlike greywater systems, there are no treatment costs, and the water is not being first removed from the river, reducing flow to the ecosystem. There have been arguments that rainwater collection systems can affect groundwater systems, since the rain is not percolating to the underground aquifers. It is difficult to assess this concern.



Sizing the System
Based on regional rainfall data, a majority of the rainfall occurs in June. The total precipitation from May until August (when irrigation is useful) is 210mm.



Rainfall intensity a one-in-a-hundred year rainfall event will contribute about 255 mm in an hour. A five-year intensity is considerably less at about 120 mm in an hour. The gutter and downspout, as well as the overflow system should be designed for this maximum flow.

The south facing roof area on The Living Home is approximately 60 m² and the north roof are is approximately 70 m². The maximum flowrate on the south side would therefore be slightly more than 15 cubic meters per hour, and about 18 cubic meters per hour on the north roof. A standard gutter is adequate for these flowrates, and a 2” overflow line will be suitable.

The storage size depends on the annual precipitation and rate of use. Assuming that all of the rain for May and June is retained, the size of storage required would be 7 m³ for the south roof, and 8 m³ for the north roof – this is like having 40 rain barrels. More reasonably, the amount of required for the landscaping during drought periods is all that must be stored for each growing season. The average xeriscaped yard in Alberta requires about 13 liters per square foot. At 1000 square feet of landscaped yard, approximately 1.3 m³ of water is required per year.

If approximately 100 kg of plastic is used to store the rainwater, and approximately 5 cubic meters of water is stored each year, the energy payback compared to treated water is over 1000 years. The water, however, is stored for drought conditions when the river flowrate is low. Unlike greywater, water used for irrigation does not directly flow to the river – so in periods of high urban irrigation, the river flow can be substantially diminished. The value of maintaining healthy river flowrates (including recreational value, acting as a sink for effluents, and the environmental services of a healthy ecosystem) is considerable, and justifies the installation of a rainwater harvesting system.









Filtering Systems


It is desirable to divert the first volume of water from a roof to prevent dirt and leaves that have accumulated from entering the storage tank. Simple approaches include a leaf screen over the gutters, a leaf screen in the downspout that can be easily cleaned, or a first-flush system that diverts the first volume of rain (and dirt) to the ground.

A simple system, shown above, collects water from the roof (made from non-toxic materials like concrete-fibre). The water flows through the downspout to the leaf-catcher which is a screen to separate large objects like leaves and twigs. The water initially fills the empty ‘first-flush’ volume before being directed to the rainwater storage tank. The tank continues to fill until the level reaches the overflow line, at which time the water is diverted to a swale to be absorbed into the groundwater. Once the rain event is over, the first-flush volume may be drained to prepare for the next rain event.

A simple leaf-catcher is essentially a screen installed at an angle to the flow. The rain water passes through the screen, but leaves and twigs are blocked and are rinsed from the screen. The leaf-catcher has an open access for the easy removal of trapped debris.



Recommendation
Based on environmental considerations, it is recommended that a tank for storing 1 to 1.5 cubic meters of water be installed to irrigate the landscape. The south roof is capable of delivering this volume in the early spring, and overflow can be directed to a swale or soakaway encouraging shallow infiltration to replenish the storm retention pond west of The Living Home. The north roof can be directed to the greenroof to fill a standard rain-barrel with overflow being directed to a swale or soakaway in the front of the home.

Systems Menu