A regenerative thermal oxidizer (RTO) with three or more chambers. Each chamber would be in a unique mode, (inlet, outlet, purge). Each chamber has its gas flow determined by two poppet valves which define which mode the chamber will be in: inlet mode, output mode, or purge mode.

A heating, ventilating, and air conditioning (HVAC) system includes a furnace having a primary heat exchanger and a secondary heat exchanger, where the primary heat exchanger and the secondary heat exchanger form a heat exchange relationship between an airflow and an exhaust gas, and where the primary heat exchanger is positioned upstream of the secondary heat exchanger, a burner configured to generate the exhaust gas, a sensor configured to monitor an ambient temperature, and a control system configured to receive feedback from the sensor, compare the feedback to a threshold, operate the furnace in a first mode when the ambient temperature exceeds the threshold, and operate the furnace in a second mode when the ambient temperature is at or below the threshold, where the furnace operates above a condensation temperature when in the second mode, such that the exhaust gas does not condense when operating in the second mode.

A method for producing a sector plate for a rotary heat exchanger is disclosed. The method includes defining overall dimensions of a sector plate. A number of a plurality of tapered ribs to be included on the top surface is determined based on a surface area of the sector plate and/or a sealing to be provided by the sector plate. Additionally, a root height of the plurality of tapered ribs is determined based on at least a plate thickness of the sector plate and the number of the plurality of tapered ribs. With the root height, the plurality of tapered ribs cause the sector plate to deform parabolically in response to an actuation. The plurality of tapered ribs also return the sector plate to a rest position and the sector plate supports its weight in a cantilevered fashion when in the actuated position and the rest position.

An exhaust gas heat exchanger may include a tube bundle and a housing through which a coolant is flowable. The tube bundle may include a plurality of exhaust gas-conducting tubes held in a first tube base and a second tube base. The housing may enclose the tube bundle and may have face ends delimited by the first tube base and the second tube base. The housing may include a coolant inlet arranged in a region of the second tube base and a coolant outlet arranged in a region of the first tube base such that the coolant flows in counter flow relative to the exhaust gas. A plurality of coolant bypass passages may be arranged between the tube bundle and the housing. At least a subset of the plurality of coolant bypass passages may be at least partly blocked by an inlay structured and arranged to steer a coolant flow.

The present disclosure is directed to systems and methods that transfer heat directly from hot particles to a cold fluid, such as sCO.sub.2, by bringing the hot particles and cold fluid into direct contact at the operating pressure of the cold fluid. These systems and methods can both stand-off large pressure differentials while allowing particles to pass through and limiting cold fluid leakage either continuously or through a batch process.

A method for operating a regenerative heat storage arrangement, wherein the heat storage arrangement has a gas heater for heating a carrier gas; a heat storage row with multiple heat storage modules; and at least one compressor. During a loading cycle, carrier gas heated in the gas heater flows through at least one heat reservoir module, which is thermally charged by the transfer of heat from the heated carrier gas to a heat storage material of the heat reservoir module. The carrier gas is cooled during the charging process. If, after the charging of a heat reservoir module, the carrier gas temperature reaches or exceeds a minimum charging temperature for a subsequent heat reservoir module, the carrier gas is fed to the subsequent heat reservoir module for charging. The carrier gas is recirculated back to the gas heater if the carrier gas temperature falls below the minimum charging temperature.

An arrangement for receiving and/or releasing, in particular storing, thermal energy, including: a container for holding storage material, the container having a first fluid port and a second fluid port for allowing inflow and outflow of fluid flowing through the container in a substantially horizontal flow direction for charging and/or discharging the storage material; at least two first valves at different vertical positions for the first fluid port; at least two second valves at different vertical positions for the second fluid port; and at least two temperature sensors arranged within the container at different vertical positions, in particular in one plane perpendicular to the flow direction.

A heat storage and heat release system for molten salt with steam heating is provided. The heat storage and heat release system for molten salt with steam heating includes a low-temperature molten salt tank, a high-temperature molten salt tank, molten salt pumps, a boiler barrel, a fixed tube-plate heat exchanger and a drum. The boiler barrel, the fixed tube-plate heat exchanger and the drum are arranged from high to low and are respectively. At least one molten salt outlet pipe and at least one molten salt returning pipe from the low-temperature molten salt tank are connected with the tube pass of the fixed tube-plate heat exchanger. At least one molten salt outlet pipe and at least one molten salt returning pipe from the high-temperature molten salt tank are connected with the tube pass of the fixed tube-plate heat exchanger.

A monitoring apparatus includes an interface and a controller. The interface is configured to acquire a signal that is based on the temperature of the inside of a cooling tower configured to cool a cooling target. The controller is configured to acquire the signal from the interface and calculate the temperature distribution of the inside of the cooling tower. The controller analyzes an abnormal site of the cooling tower based on the temperature distribution.

The invention relates to a method and to a device for performing cyclical energy storage for a process region in a cyclical operation using an energy storage medium having a hot side and a cold side, the method comprising the following method steps, which are repeated in a cycle time. The energy storage medium is heated on the hot side by means of a hot medium in order to initiate internal thermal conduction in the energy storage medium from the hot side to the cold side. The temperature on the cold side of the energy storage medium is continuously captured by means of a temperature sensor and is compared with a preset limit temperature. After the limit temperature has been reached, a cold medium is fed to the cold side of the energy storage medium and the stored energy is discharged beginning from the cold side toward the hot side of the energy storage medium. At the start of a new energy storage cycle, the energy storage medium is heated on the hot side again.