Session 20: Natural Gas

Chairs:

Eduardo Ponce da Motta
CENPES/DIPLOT/SETEP

Felipe Bastos de Freitas Rachid
Departamento de Engenharia Mecânica - Universidade Federal Fluminense

Geraldo Spinelli Ribeiro
Sergio N. Bordalo
CENPES






s20p01

COST EFFECTIVENESS ANALYSIS FOR THE SUBSTITUTION OF THE ELECTRICAL SHOWER TO GAS WATER HEATERS

Célio Bermann - [email protected]
IEE - INSTITUTO DE ELETROTÉCNICA E ENERGIA DA UNIVERSIDADE DE SÃO PAULO - Cidade Universitária - São Paulo

Jorge Venâncio de Freitas Monteiro - [email protected]
COMGÁS - CIA DE GÁS DE SÃO PAULO - Av. Pres. Wilson, 816

The hydropower natural resources for generation of electrical energy at the south part of Brazil has been extinguished at the last years and as a consequence large investments should be made in order to attend the electrical energy demand at this part of country. These paper purposes a comparison between the use gas water heater and the traditional electrical shower largely applied at the Brazilian residences. It will be focused not only the consumer point of view but also the construction enterprise position as well as the advantages for the overall country due to this substitution.

Keywords: Electrical shower, Gas, Gas water heater.
 
 



s20p02

WOOD AND NATURAL GAS AS FUELS FOR TUNNEL KILNS IN THE CLAY-PRODUCT INDUSTRY

Gabriel M. dos Santos - [email protected]
Edson Bazzo - [email protected]
Vicente de P. Nicolau - [email protected]
Amir A. M. Oliveira - [email protected]
Universidade Federal de Santa Catarina, Departamento de Engenharia Mecânica
88040-900 - Florianópolis, SC, Brasil

The clay-product industry is responsible to large part of the thermal energy consumption, especially on drying and burning process. In spite of the success obtained with the burning of wood like principal fuel for tunnel kilns, the clay-product industries of Santa Catarina have looked for alternatives to substitute it. The interest appears especially due to imminent shortage of the wood on the market and due to possibility of use natural gas as a good and environmentally favorable alternative to reduce the energy specific consumption of the kilns, to increase the production and to improve the quality of the ceramic products. Nowadays, the natural gas is more expensive when compared with the wood. However, we believe that additional studies can place this fuel as a viable alternative to the clay-product industries.

Keywords: Clay-product, Tunnel kiln, Natural gas, Thermoeconomic analysis