Determination of Solar Energy for the Bioclimatic Design of Housing in the City of Juliaca Peru
Elmer Rodrigo Aquino Larico
Issue:
Volume 4, Issue 1, January 2019
Pages:
1-9
Received:
9 November 2018
Accepted:
4 March 2019
Published:
28 March 2019
Abstract: Solar energy is an inexhaustible source, clean and does not pollute the environment being a resource that can be used. The objective of this research work is to determine solar energy for the bioclimatic design of houses in the city of Juliaca for two systems: solar photovoltaic for the generation of electric power and solar thermal for water heating. In the development of this project the daily measurement for three months of the solar irradiation was made with a solar measuring instrument MAC-SOLAR Solarimeter SLM018c-2, where the Peak Sun Hours (HSP) were determined with the methodology of negative asymmetric distribution of 6.632 kwh/m2/day and an average irradiation value of 1110.04 w/m2 in the city of Juliaca, with an optimum time interval from 9:00 am to 3:00 pm irradiation during the day, which has allowed modeling the behavior of solar energy for the design of a photovoltaic and thermal solar system; In addition, an experimental radiant floor module has been built in a bioclimatic room, which by recirculation of hot water through the floor reaches an average temperature of 20.93ºC from 6:00 am to 9:00 pm, being within the zone of comfort of the Givoni Psychometric Diagram and the Peruvian Technical Standard (NTP).
Abstract: Solar energy is an inexhaustible source, clean and does not pollute the environment being a resource that can be used. The objective of this research work is to determine solar energy for the bioclimatic design of houses in the city of Juliaca for two systems: solar photovoltaic for the generation of electric power and solar thermal for water heati...
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Valorization of the Energy Potential of Liquid Wastes Effluents: Case of an Oil Palm Agro-Industry in a Tropical Humid Zone
Kra Essi Kouadio Francis,
N’Guessan Kotchi Remi,
Adama Ouattara
Issue:
Volume 4, Issue 1, January 2019
Pages:
10-17
Received:
29 January 2019
Accepted:
13 March 2019
Published:
10 April 2019
Abstract: The latest analysis realized by the Anti-Pollution Center (CIAPOL) of Côte d’Ivoire in March 2017, reveals that the liquid effluents resulting from the processing of palm oil fruits in the industrial process of palm oil that is studied in this work are, highly charge in organic matter (COD are between 60 000 mg/l to 90 000 mg/l; and there BOD5 are situated between 15 000 mg/l to 30 000 mg/l for a volume of 0.7 m3/ T). This is not in accordance with ISO environmental protection requirement and the decree N° 01164 - MINEF- CIAPOL- SDIID of 04/11/2008 which recommend a decrease of their BOD5 from 30 000 mg/l to 3000 mg/l by treating liquid effluents in an effective anaerobic device with an recuperation and valorization (combustion in an biogas engine witch produce electricity) of methane that these liquid effluents contain. Doing so, this methane will not be rejected in the atmosphere. In the second hand by a final treatment of degraded effluents through the irrigation system of industrial plantations. It should be noted that for the case studied here, the average tonnage of production of Palm Oil fruit bunches is 200000 tons per year. This transformation of palm oil fruits will produce about 140 000 m3 of liquid wastes per year. Base on laboratory experiences, the conclusion is that, 1m3 of waste can produce 32 Nm3 of biogas. Knowing that 1 Nm3 of biogas equal 5000 kcal which equal 5.81 kWh, in consequence a 17 GWh producible of electricity per year is expected. The generated electricity can supplement all external energy power supplies to the plants and provide needed energy to all villages around. The project will allow the industrial process to reduce their energy cost as well as protecting the environment around. The work done here will be beneficial for the industrial process because it will allow on one hand to save energy and on the other hand to produce fertilizer for palm oil fields.
Abstract: The latest analysis realized by the Anti-Pollution Center (CIAPOL) of Côte d’Ivoire in March 2017, reveals that the liquid effluents resulting from the processing of palm oil fruits in the industrial process of palm oil that is studied in this work are, highly charge in organic matter (COD are between 60 000 mg/l to 90 000 mg/l; and there BOD5 are ...
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Effect of Supertargeting and Non Isothermal Stream Mixing in Heat Exchanger Network Design Using Modified Pinch Analysis
Azeez Oluwatosin Sarafa,
Ogbonnaya Blessing,
Ekechukwu Onyinye,
Akande Hassan
Issue:
Volume 4, Issue 1, January 2019
Pages:
18-26
Received:
30 January 2019
Accepted:
21 March 2019
Published:
11 May 2019
Abstract: This paper investigated the effect of minimum temperature difference as well as that of non-isothermal stream mixing in heat exchanger networks (HENs) using a modified pinch technique. Supertargeting was carried out to determine the appropriate minimum temperature difference value used to design the HENs. The networks were further optimized to remove the isothermal mixing assumption. In the four case studies used in this work, each shows how these two concepts affect the total annual cost (TAC) of HENs. These were presented in the network comparison tables where the cost of the networks using supertargeting is much lower than the cost of the ones without, and the non-isothermal mixing networks have lower costs than the ones with the isothermal mixing assumption even in the networks designed without supertargeting technique.
Abstract: This paper investigated the effect of minimum temperature difference as well as that of non-isothermal stream mixing in heat exchanger networks (HENs) using a modified pinch technique. Supertargeting was carried out to determine the appropriate minimum temperature difference value used to design the HENs. The networks were further optimized to remo...
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