Hitachi, Ltd.

Hitachi Plant Mechanics Co., Ltd.

Shinichirou Kawane

Jun Yoshida

Shuichiro Uchida

Hironobu Ueda

Munenori Kawamura

Nobuyuki Takeda

[Problem] To present a solar heat collecting device capable of enhancing the heat collecting efficiency by effectively utilizing the sunlight entering an area near the end part of the reflector at the opposite side of the direction of location of the sun. [Solving Means] In the solar heat collecting device for collecting the reflected light of sunlight Sb, Sbentering a trough type reflectorhaving a parabolic section to a heat collecting pipeerected at a position of focus of the reflector, and transmitting energy to a heat medium passing inside of the heat collecting pipe, the solar heat collecting device is installed so that central axis Lof the reflectormay be directed along the north-south axis, and a plane reflectoris disposed orthogonally to central axis L, at the end part of the reflectorat the opposite side of the direction of location of the sun.

Solar heat collecting device

A sunlight heat utilized steam absorption chiller is provided with a generator which uses steam generated by sunlight heat as a heat source, an absorber, an evaporator, and a condenser, and has a heat exchanger for allowing heat exchange between a dilute solution flowing from the absorber to the generator and a strong solution flowing from the generator to the absorber. The chiller is provided with a burning heat source for generating steam, and either the steam generated by the burning heat source or the steam generated using sunlight heat can be used as the heat source for the generator. The chiller is provided with a steam drain heat recovery unit for allowing heat exchange between at least part of the dilute solution flowing from the absorber to the generator and a steam drain discharged from the generator so as to allow heat recovery from the steam drain.

Sunlight heat utilized steam absorption chiller and sunlight heat utilization system

Growing community of inventors

Tokyo, Japan

Shinichirou Kawane