A first circulation channel connects a first heat demand part and first supply heat exchanger with its forward route and return route. Supply and discharge channels are connected to a first heat accumulation tank, which accommodates a second heat medium heated in the first supply heat exchanger and supplied via the supply channel. A heat accumulation switching valve changes over communication of the second heat medium serving as hot heat or cold heat flowing from the first supply heat exchanger and supplied to the first heat demand part without branching to the supply channel or branching to the supply channel and supplied to the first heat accumulation tank. A heat-accumulating hot-water-supplying air conditioner operates at a first temperature when the second heat medium from the first supply heat exchanger branches to the supply channel, and at a second lower temperature when the second heat medium does not branch to the supply channel.

An Organic Rankine Cycle power generation system includes: a first heat storage tank having a closed cylindrical shape and including a first internal heat exchanger therein; a second heat storage tank including a second internal heat exchanger therein; a first circulating pipe branched from a high temperature water supply pipe; a second circulation pipe branched from the high temperature water supply pipe; a first cold water supply pipe supplying cold water from the outside to the inside of the first heat storage tank; a second cold water supply pipe supplying cold water from the outside to the inside of the second heat storage tank; and an opening and closing unit selectively opening and closing the first circulation pipe and the second circulation pipe, and the first cold water supply pipe and the second cold water supply pipe.

A dual fluid heat exchange system is presented that provides a stable output temperature for a heated fluid while minimizing the output temperature of a cooled fluid. The heated and cooled fluids are brought into thermal contact with each other within a tank. The output temperature of the warmed fluid is maintained at a stable temperature by a re-circulation loop that connects directly to the mid portion of the tank such that the re-circulated fluid flow primarily warms only a re-circulation section of the tank. The other, lower flow rate, section of the tank may be positioned so that it has a cooler temperature and thus serves to increase the efficiency of the heat exchange by extracting extra heat energy out of the cooled fluid before it leaves the tank. Alternatively, the low flow rate section of the tank may be warmer than the re-circulated section, and thus allow the re-circulated section to be cooler than the output temperature of the warmed fluid.

A system for selectively heating and cooling including a three-way heat exchange apparatus, a source apparatus for selectively heating and cooling a source fluid, a phase change material for selectively storing heating and cooling potential, and a distribution apparatus for selectively distributing heating and cooling a distribution fluid, wherein the three-way heat exchange apparatus is connected to the phase change material by an interface between the heat exchange apparatus and the phase change material.

A heat treatment method of a substrate includes setting a temperature profile over the course of stabilization to a target temperature after the substrate is loaded as a reference, and controlling a temperature of the hot plate supporting the substrate on the basis of the reference.

A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.

A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.

There is disclosed a system and method for transferring waste heat from integrated circuits. In an embodiment, the system comprises: a self-contained enclosure having integrated circuits therein, the self-contained enclosure further including: a first fluid circuit configured for removing waste heat from the integrated circuits; an inlet for connection from an external water tank and an outlet for connection to the external water tank, that when connected with the external water tank forms a second fluid circuit; a heat exchanger operatively connected to the first fluid circuit and the second fluid circuit, and configured to transfer thermal energy therebetween; and a control for regulating a temperature gradient and a flow rate in each of the first and second fluid circuits, such that both a desired integrated circuit operating temperature and a desired water tank temperature is achieved. A plurality of self-contained enclosures co-located with water tanks may form nodes of a distributed computing and heating network.

A latent heat storage window includes a plurality of cells, an operation mechanism, and a magnetic material. The plurality of cells are formed by encapsulating a latent heat storage material including two or more components. The operation mechanism can be operated by a user. The magnetic material causes a specific component of the two or more components included in the latent heat storage material to be unevenly distributed when the operation mechanism is operated.

Provided is a tower-type outdoor air cleaning apparatus that is disposed outside a facility that performs air cleaning, cleans outside air, and supplies the cleaned air, including: a tower body unit that is disposed away from the facility on one side of the facility, is provided in a tower type with a double-wall structure, in which fomentation is performed inward, air is filtered and suctioned, and is exhausted; an air supply unit that is provided above the tower body unit, in which air is supplied through an upper portion thereof and air flows in through a side portion at a plurality of locations of an outer circumference thereof and is mixed with the air supplied through the upper portion; an air ventilation filter unit that is disposed inside the air supply unit and the tower body unit, filters the mixed air supplied from the air supply unit to be supplied to the facility connected thereto, and exhausts the air circulated in the facility to the outside; a fomentation facility unit that is disposed inside the tower body unit and generates heat and electricity using solar energy for use in fomentation; and a control unit that is connected to the air ventilation filter unit and the fomentation facility unit to control the amount of air supplied by the air supply unit through the air ventilation filter unit, and controls production and transfer of heat and electricity using solar energy in the fomentation facility unit.