Design of Solar Thermal Collector Tool with Thermosifon System

Limited availability of fossil energy requires us to find for alternative energy to meet our needs. Solar thermal collector with thermosifon system is one of environmentally friendly alternative energy. The thermosifon system is a natural pump which work based on density difference between cool water and hot water, so that no electric pump is needed. The purpose of this research was to create a mean of collecting solar thermal energy with thermosifon system. The research steps consist of designing, manufacturing, and testing. Thermal collector was made with dimension of 1,5 m long, 1,0 m wide and 1,0 m high, with storage tank capacity of 20 lt. Collector testing was conducted by putting the equipment at an open space from a clock 08:00 – 16:00. It was found that the highest efficiency of solar collector (11,2 %) occurred on July 11, 2012 with an average solar intensity of 756 W/m2, where as the lowest efficiency (8,8 %) occurred on July 7, 2012, with the average solar intensity 479 W/m2. The highest average temperature of the storage tank was 44,7 ºC on July 13, 2012 while the lowest average temperature was 35,3 ºC on July 12, 2012

Pelaksanaan Tanggung Jawab Sosial Perusahaan PT. Sawit Asahan Indah Di Kecamatan Rokan IV Koto Kabupaten Rokan Hulu

Corporate Social Responsibility (CSR) is a corporate social responsibility imposed on companies that are active in processing natural resources, especially in this study, oil palm plantations. With this CSR, the company is no longer an organization that only pursues material profit, but also has a responsibility to help the community and also prosper the surrounding community and protect the environment. with the issuance of Law Number 40 of 2007 concerning Companies, especially Article 74. In this study, the main problem is how PT. Sawit Asahan Indah in fulfilling its obligations to carry out corporate social responsibility in Rokan IV Koto subdistrict, Rokan Hulu district and what problems occur in carrying out corporate social responsibility obligations of PT. Sawit Asahan Indah in Rokan IV Koto subdistrict, Rokan Hulu district. The research combines normative legal research methods and observational legal research methods. The observation research method was carried out first with interview data collection techniques to 3 sources, namely 2 people from the company and 1 person from the village and followed by collecting data with questionnaires to 20 people who were residents of Lubuk Bendahara Timur village from 10 RT (Rukun Tetangga) . Furthermore, using normative legal research methods by comparing the essence of observations with applicable rules and theories from experts. The conclusion of this research is the implementation of corporate social responsibility at PT. Asahan Indah Palm Oil has been implemented by the company. However, the lack of CSR insight of the parties who handle CSR from PT. Sawit Asahan Indah regarding the value contained in Article 74 of Law Number 40 of 2007 concerning Companies needs to be understood again. as well as the presence of parties who are not responsible for taking advantage of CSR, it is necessary to act immediately in order to create CSR whose benefits can be felt by all levels of society. There is also a need for strict supervision from the PT. Sawit Asahan Indah so that the implementation of this CSR runs smoothly and remains targeted and in accordance with the needs and to the people who really need it. Behind the shortcomings that the authors take from this research the implementation of CSR by PT. Sawit Asahan Indah deserves appreciation because the company has tried to do it well. It is hoped that in the future PT. Asahan Indah Sawit can improve its existing shortcomings and become better so that it becomes an example for other companies in carrying out this Corporate social responsibility or CSR

PELATIHAN PENINGKATAN EKONOMI PETANI JAMUR TIRAM DI GAMPONG ASAN KAREUNG KECAMATAN BLANG MANGAT KOTA LHOKSEUMAWE

Community empowerment can be defined as a social action in which residents of a community organize themselves to make collective plans and actions to solve social problems or meet social needs according to their abilities and resources. In reality, often this process does not emerge automatically, but grows and develops based on the interaction of the local community with outsiders or social workers either from a charitable or professional perspective. This activity aims to overcome the problems that are being faced by mushroom farmers to increase production yields, overcome problems related to business development which will be overcome by structuring the business management system that has been running. The training program to improve the economy of oyster mushroom farmers in Gampong Asan Kareung, Blang Mangat District, Lhokseumawe City can be held well and run smoothly in accordance with the activity plan that has been prepared even though not all mentoring participants have mastered the material presented. This activity was very well received as evidenced by the liveliness of the participants following the assistance well