scholarly journals Distributed cold storage in district cooling—Grid dynamics and optimal integration for a Swedish case study

2021 ◽  
Vol 7 ◽  
pp. 419-429
Author(s):  
Saman Nimali Gunasekara ◽  
Zinar Bilek ◽  
Ted Edén ◽  
Viktoria Martin
2021 ◽  
Vol 12 (4) ◽  
pp. 314
Author(s):  
Raseel Aljendy ◽  
Rinat Nasyrov ◽  
Terad Ebraheem ◽  
Almoataz Youssef Abdelaziz ◽  
Ahmed A. Zaki Diab

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 872 ◽  
Author(s):  
Rasaq Lamidi ◽  
Long Jiang ◽  
Yaodong Wang ◽  
Pankaj Pathare ◽  
Marcelo Aguilar ◽  
...  

Over 90% of global yam production is from West Africa where it provides food and income for above 300 million smallholders’ farmers. However, the major challenge of yam is 10–40% post-harvest losses due to the lack of appropriate storage facilities. This paper assesses a biogas-driven cogeneration system, which could supply electricity and cold storage for ‘yam bank’ within a rural community. Considering 200 households’ Nigerian village as a case study, crop residues are used as anaerobic digestion feedstock to produce biogas, which is subsequently used to power an internal combustion engine. Result shows that the system could store 3.6 tonnes of yam tubers each year and provide enough electricity for domestic and commercial activities. At the current electricity tariff of USD0.013·kWh−1 for rural areas, the system is unable to payback during its life span. The proposed USD0.42·kWh−1 by Nigerian Rural Electrification Agency seems good with less than 3 years discounted payback period but brings about extra burden on poor rural households. Based on the income from cold storage, electricity tariff of USD0.105·kWh−1 with an interest rate of 4% is suggested to be reasonable which results in 6.84 years discounted payback period especially considering non-monetary benefits of renewable energy system.


2017 ◽  
Author(s):  
T. Dai ◽  
A. S. Fleischer ◽  
A. P. Wemhoff ◽  
R. Lee

The large number of industrial kitchens and their energy-intense characteristics provides opportunities for pollution prevention. Life cycle assessment (LCA) is a proper tool not only for unitizing the environmental impact of the complex system of an industrial kitchen, but also for making environmental food labels for the foods produced in the same industrial kitchen. In this study, a gate-to-gate LCA of 11 types of food was conducted to evaluate the environmental impact of a typical industrial kitchen, Villanova University’s Donahue Hall. First, material and energy flow data, including cold storage, food preparation, food display, lighting, heating, ventilation, and air conditioning (HVAC), and dish washing were collected. This data, along with standard data on energy generation and transmission, were used in the LCA. The results show that global warming, fossil fuel depletion and ecotoxicity are the main environmental impact categories. Furthermore, HVAC, cold storage and cooking are the three largest contributors of environmental burden. Using the metrics developed, tuna salad, tomato soup and pasta are the most environmental friendly foods of the 11 sampled food types, while pizza and cheese quesadillas have the worst environmental performance. Energy saving measures for HVAC, cold storage and cooking are proposed.


2014 ◽  
Vol 88 ◽  
pp. 758-767 ◽  
Author(s):  
José Nunes ◽  
Diogo Neves ◽  
Pedro D. Gaspar ◽  
Pedro D. Silva ◽  
Luís P. Andrade

2021 ◽  
Vol 2 (3) ◽  
pp. 284-292
Author(s):  
Changa Wangmo ◽  
Tashi Dendup

This study assessed post-harvest activities and post-harvest losses of green chili farming in Kabjisa, Punakha, Bhutan. Data came from interviewing 75 chili-growers selected via proportionate random sampling. Most farmers were found selling fresh chili (green chili). Few farmers produced blanched, dried, and powdered chilies for self-consumption. Most grown chili varieties were Wookup ema, Indian chili, and Yangtsep ema. Farmers mostly harvested chilies manually during the daytime in a bucket. The majority of the farmers have sorted and graded chilies based on disease infection, damaged parts, and size. Chilies are usually packed and stored for a night before the sale. Most chili losses occurred during harvesting, followed by marketing and sorting. The price of fresh chilies had to discount significantly during the peak season as farmers could not process chilies into other products. Hence, supporting farmers with dryer, cold storage, chili value addition infrastructure, and contract farming would minimize chili losses.


Author(s):  
Ramziah An Najah ◽  
Ernani Lubis ◽  
Retno Muninggar

<p>ABSTRACT<br />Lampulo Coastal Fishing Port is not working optimally after the 2004 tsunami. A total of 9,563 units boats without motor, outboard boats and inboard boats were damaged by the tsunami, including the PPP Lampulo, 30 Fish Landing Base (PPI), ice plant, cold storage, Fish/Shrimp Seed Center Office, and the fish market. This study aimed to obtain information about the existence and condition of facilities in the PPP Lampulo, Banda Aceh; determining the level of existence, needs, and facility conditions to support their activities; and determining the ratio between the existence and needs of the facilities. The case study method was applied in this research with scoping on existence, needs, and facility conditions and the ratio between the existence and the need for facilities to support activities in the PPP Lampulo. Data were analyzed by descriptive statistical approach. The result showed that, in general, the existence and condition of facilities in supporting the activities of the PPP Lampulo had been going well. The ratio between the existing facilities toward the should exist facilities, namely on the vital facilities 1:1,12 (good), significant 1:1 (very good), and complement 1:1,43 (good) and this indicated that all activities in the PPP Lampulo had already been going properly. Key words: Banda Aceh, fishing ports, PPP Lampulo, the facilities</p><p>-------</p><p><br />ABSTRAK<br />Pelabuhan Perikanan Pantai Lampulo merupakan pelabuhan perikanan pantai (PPP) yang belum berupaya secara optimal setelah tsunami. Sebanyak 9.563 unit perahu tanpa motor, perahu motor tempel dan kapal motor hancur/hilang/rusak akibat tsunami, termasuk juga PPP Lampulo, 30 Pangkalan Pendaratan Ikan (PPI), pabrik es, cold storage, Balai Benih Ikan/Balai Benih Udang, dan Pasar Ikan. Penelitian ini bertujuan untuk mendapatkan informasi tentang keberadaan dan kondisi fasilitas yang terdapat di PPP Lampulo; menentukan tingkat keberadaan, kebutuhan, dan kondisi fasilitas dalam menunjang aktivitasnya; serta menentukan rasio antara keberadaan dan kebutuhan fasilitasnya. Metode penelitian yang digunakan adalah studi kasus yang melingkupi keberadaan, kebutuhan, dan kondisi fasilitas serta rasio antara keberadaan dan kebutuhan fasilitas dalam menunjang aktivitas di PPP Lampulo. Analisis yang dilakukan secara deskriptif melalui pendekatan statistik. Secara umum keberadaan dan kondisi fasilitas dalam menunjang aktivitas di PPP Lampulo telah berjalan dengan baik. Perolehan rasio antara fasilitas yang ada terhadap fasilitas yang seharusnya ada, yaitu: pada kelompok fasilitas vital 1:1,12 (baik), penting 1:1 ( baik sekali), dan pelengkap 1:1,43 (baik). Hal ini mengindikasikan bahwa segala aktivitas di PPP Lampulo sudah dapat berjalan dengan baik.<br />Kata kunci: Banda Aceh, pelabuhan perikanan, PPP Lampulo, fasilitas</p>


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