Storing surplus PV energy with thermal storage electrical boilers – pv journal International

Japan’s IHI Corporation says a pilot of a thermal utilization system that converts all beforehand discarded surplus direct present (DC) energy from solar energy vegetation into carbon-free steam “reveals of steady system efficiency.”

IHI says its Renewable Energy Thermal Utilization System will economically and flexibly convert renewable electrical energy into thermal vitality, storing it for later use. This explains that it’s particularly helpful for photo voltaic vegetation, which might simply produce extra electrical energy because of the variation of photo voltaic radiation all through the day.

The check challenge, situated on the Soma City sewage disposal plant in Fukushima Prefecture, started in April.

This contains IHI putting in a 300 kW photo voltaic plant and a 200 kW conditioner on the sewage disposal plant, to generate as much as 200 kW of alternating present (AC) electrical energy.

To create the thermal utilization system, the corporate then put in seven Jokigen thermal storage electrical boilers, manufactured by IHI Inspection & Instrumentation Co. Ltd, one of many subsidiaries of the company. IHI says it has modified the boilers barely to run on each DC and AC energy.

IHI discovered its thermal utilization system able to absorbing as much as 189 kW (27 kW per unit) of DC energy. It says since April, it has been utilizing all of the electrical energy it has generated and is working stably. In June, the plant consumed 23.16 MWh of AC energy and 11.86 MWh of DC energy.

According to particulars on its web site, IHI now sees the enlargement of the marketplace for on-site thermal utilization techniques, with plans for commercialization.