Performance of a Solar Dryer

WOS: A1994PB16800010A new solar dryer, which consists of a solar air heater and a drying chamber, was developed and used for drying agricultural products. The present drying system was successfully tested using sultana grapes, green beans, sweet peppers, and chilli peppers. Traditional sun-drying experiments were employed. The drying curves of the solar dried products are compared with traditional sun-drying results. Use of the solar dryer reduced the drying time by factors of 1.7, 2.2, 1.8, and 2.2, respectively, for sultana grapes, green beans, and sweet and chilli peppers, prevented mass losses and provided better product quality

Thermal Performance of a New Solar Air Heater

WOS: A1995RA03500010A solar air heater, part of a food drying system using solar energy as a renewable energy source for heat, was developed and tested for several agricultural products (i.e., sultana grapes, green beans, sweet peppers, chilli peppers). Drying processes were conducted in the chamber with forced natural air heated partly by solar energy. Solar air heater performances were discussed along with estimates of energy efficiency of the system. The obtained results indicate that the present system is efficient and effective

Experimental testing of a new solar dryer

Drying of agricultural products is an energy-intensive operation. High prices and shortages in fossil fuels increase the emphasis on using solar energy as an alternative energy source, especially in developing countries. In this respect, a new solar dryer, which consisted of a solar air heater and a drying chamber, was developed and used for drying various fruits and vegetables, i.e., sultana grapes, green beans, sweet peppers and chilli peppers and was successfully tested. In order to make a comparison, the traditional sun-drying experiments were employed. Results showed that the solar dryer reduced the drying time significantly and prevented mass losses, and essentially provided better product quality. Copyright © 1994 John Wiley & Sons, Ltd

Thermolysis Product Distribution of Solid Waste Obtained from Olive Oil Production.

Pyrolysis and direct combustion processes were applied to pomace obtained from olive oil production in Bayer/ICI/Shell (BIS) and Verbant der Chemische Industrie (VCI) furnaces. The volatile and semi-volatile products derived from both processes taking place in each furnace were captured on XAD resins at selected temperature and non-volatiles were obtained after extraction of the resins with acetone. The qualitative and quantitative determinations were carried out by using a gas chromatograph coupled with mass spectrometry. It was found that the compound distribution at different temperatures in the combustion process were wider than for the pyrolysis in the BIS furnace. The compounds obtained at lower temperatures during pyrolysis and combustion in the VCI furnace showed similarities, although a larger number of compounds were obtained at 800°C in the combustion process than in the pyrolysis process

MANAJEMEN PEMASARAN JASA

Sebagai pelaku usaha di bidang jasa, Kita wajib melakukan manajemen pemasaran jasa. Manajemen ini sangat penting dilakukan karena persaingan di luar sana sangat ketat. Jika kita tidak mempunyai manajemen dengan baik, maka produk jasa yang ditawarkan tersebut akan tenggelam dengan sendirinya. Hal inilah yang nantinya akan menyebabkan usaha kita gulung tikar secara perlahan karena tidak mampu memanajemen jasa dengan baik. Manajemen pemasaran jasa merupakan sebuah proses pengelolaan pemasaran atau marketing produk jasa yang dilakukan oleh penyedia jasa dengan tujuan produk jasa miliknya bisa dikenal masyarakat dengan baik sehingga mendorong mereka untuk menggunakan jasa tersebut. Manajemen pemasaran jasa ini tentunya akan berbeda dengan manajemen pemasaran produk karena karakteristik antara produk dan jasa memang berbeda pula. Dalam manajemen pemasaran jasa, sistem pemasaran yang harus dilakukan tidak hanya dipahami oleh penyedia jasa atau pimpinan perusahaan saja. Akan tetapi, semua karyawan juga harus terlibat dalam pemasaran tersebut. Perusahaan dan para karyawan yang menyediakan jasa harus bisa meyakinkan calon pengguna jasa bahwa jasa yang mereka tawarkan memang benar-benar bisa memenuhi kebutuhan mereka. Manajemen pemasaran jasa yang akan Kita lakukan tidak boleh dijalankan dengan asal-asalan saja. Oleh karena itu, seorang manajer pemasaran atau pemilik usaha harus mampu menjalankan manajemen pemasaran dengan strategi yang matang. Tanpa adanya strategi pemasaran, maka manajemen pemasaran yang kita lakukan akan menemui banyak kegagalan. Pastikan bahwa strategi yang Kita gunakan sesuai dengan kondisi sekitar pada saat itu. Hal ini nantinya berpengaruh terhadap laku atau tidaknya produk jasa milik kita