Flat Plate Type Solar Collector Performance Using Double Thermal Insulation

Abstract

Indonesia is a country that has a huge potential of solar radiation energy since it is located in the equator. This causes Indonesia to have a tropical climate and receives almost the same emission of solar radiation throughout the year. National average solar energy potential is 16 MJ/day. This energy potential can be used as a source of thermal energy. To improve the energy potential, a research performance is done by using double thermal insulation solar collectors so that the energy can be received optimally. One alternative that is used is adding Styrofoam and Polyurethane which are installed on all sides of the collector except the upper side. Styrofoam and Polyurethane have 3 cm thickness and low thermal conductivity value therefore it is able to isolate the energy inside the solar collector. This experiment was done in a day with energy coming at the test reached 8,798,634 j/m2 with 69% efficiency level.

Harvesting energy overview for sustainable wireless sensor networks

“…On the other hand, external sources encompass energy derived from external factors, like solar radiation, wind, or fossil fuels, and are more readily accessible and widely utilized. While external sources can be abundant, they may vary in availability and sustainability, posing challenges for energy production and management [42]. These categories are further subdivided, as described below.…”

“…For example, the power ring topology or the complementary usage of harvesters is an acceptable scheme when all input energy sources are not anticipated to supply a considerable amount of power simultaneously. Energy is combined from heterogeneous sources using Switched-inductor and switched capacitor converter topologies with multiple inputs [42]. Developers should consider creating customizable matching impedance techniques for MPPT control regardless of the architecture used.…”

Penerapan Standar Mutu SNI 3021-1992 Edisi ke-1 (Satu) Dalam Prosedur Uji Kinerja Termal Sistem Pemanas Air Tenaga Surya (PATS)

“…Dengan melakukan interpolasi dan ekstrapolasi menggunakan persamaan linier yang diperoleh, jumlah data harian yang terkumpul ini memadai untuk mengestimasi parameterparameter kinerja yang dibutuhkan. Dari persamaan (4) yang diperoleh dari hasil plot gambar 3 ini dapat dilihat bahwa variabel efisiensi termal harian ղd cenderung menurun dengan kenaikan jumlah radiasi harian QIR-d. Karakteristik termal ini sudah menjadi pengetahuan umum peneliti dan penguji kolektor surya dan PATS, semakin tingginya radiasi surya akan menaikkan temperatur kerja kolektor, di mana semakin tinggi temperatur kerja kolektor akan semakin besar rugi-rugi termal sistem PATS dan kolektor [1,2,3,14,15,16,17], akibat insulasi yang umumnya menurun kemampuannya dengan naiknya temperatur kerja [18,19]. Beberapa desain kolektor pelat datar berhasil mendapatkan temperatur stagnasi tinggi dengan desain teknis tertentu dan insulasi yang berkualitas tinggi [20,21].…”

The Effective and Exergy Efficiency of Multi-Pass Solar Air Collector with Longitudinal Fins: Analysis and Optimization

“…Furthermore, some studies looking at replacing metal absorber plates with other materials were also surveyed [33][34][35]. Several studies on heat loss reduction through the wall of collector have also been considered [36,37]. All solutions show improved collector efficiency.…”