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Fuel Characteristics and Storage
Published in Fred Hall, Roger Greeno, Building Services Handbook, 2017
Electricity is converted to heat energy in water by an electrode boiler and stored in a pressurised insulated cylinder at about 180°C. The water is circulated by a pump programmed for daytime use to heat emitters in the building. Careful design of the storage vessel is essential to maintain sufficient thermal capacity for the heating requirements. An assessment of demand will need to be presented to the supply authority and a reduced rate of electricity tariff may be negotiated, possibly between 1900 and 0700 hours.
Using hydropower turbine discharge as a complementary spillway
Published in Journal of Applied Water Engineering and Research, 2023
Urban Lundin, Pontus Jonsson, Luca Facciolo
After the fitting, the power as a function of temperature can be plotted, as shown in Figure 11. As can be seen when comparing the pre-test model, Figure 5, with the experimental results in Figure 11, the power obtained in the actual test was substantially lower than expected, even at higher temperatures. This is due to the reuse of the electrode boiler designed for another conductivity value with dissolved salt. The tank was designed to have a resistance of 25 ohm to give 4 MW active power at about 20 C. It is assumed that the modest temperature dependence of the injected power is due to the internal circulation of water in the tank.
A coupling energy system of 10 clean-energy heating systems: A case study in Shandong province in China
Published in International Journal of Green Energy, 2021
Yalin Wang, Guanyi Chen, Beibei Yan, Rob Bastiaans
① The heat storage system of the electrode boiler only accumulates heat in the valley-electricity-consumption period at night, and the steam with the output temperature of 130°C is returned to the electrode boiler at 90°C after heat exchange.