Abstract: An ethylene cracking furnace is provided. The ethylene cracking furnace includes at least one radiant section. The at least one radiant section includes bottom burners and/or sidewall burners, and at least one radiant coil arranged in the radiant section. The radiant coil includes at least an upstream pass tube and a downstream pass tube, the upstream pass tube being configured as an inner tube, and the downstream pass tube being configured as an outer tube surrounding the inner tube and having a closed end. The inner tube defines an inner space forming an upstream flow path. A gap defined between the inner tube and the outer tube forms an downstream flow path.

Abstract: A method, system or computer usable program product for controlling an on-demand hot water heater including providing a plurality of nodes for receiving hot water from an on-demand hot water heater in a hot water delivery system, receiving a demand with a node identifier for hot water at a node, determining a hot water temperature for the node from a centralized database, the database including a set of node identifiers with a corresponding set of preset hot water temperatures, and controlling a temperature of hot water flowing from the water heater based on the determined hot water temperature.

Abstract: A heater supporting device for use in a semiconductor manufacturing apparatus is provided so as to improve the uniformity of a temperature property and the expected lifespan by preventing support pieces from being damaged and separated from piece holders, and preventing deterioration in adiabatic efficiency in the vicinity of a ceiling of a vertical type furnace. A heating element of a coil shape is disposed around an object. The support pieces are vertically connected in multiple. Hollows of an elliptical shape are formed between the respective support pieces. Concave insertions are formed on one of upper and lower surfaces of the respective support pieces, and convex insertions are formed on the other one of the upper and lower surfaces of the respective support pieces. The convex insertions are insert-fitted with the concave insertions. The support pieces are vertically connected in multiple by insert-fitting the concave insertions to the convex insertions.

Abstract: A combustion device includes a device main body having a combustion chamber installed above a cyclone melting furnace configured to combust a pyrolysis gas generated from a waste material after incineration while turning the pyrolysis gas, and configured to combust an unburnt gas discharged from the cyclone melting furnace. Further, the combustion device includes a plurality of sidewall boiler water pipes configured to cover a sidewall of the device main body from a periphery thereof and extending along the sidewall throughout upward and downward directions of the device main body.

Abstract: To achieve an improvement of heat exchanger effectiveness (heat transfer rate) without any increase of a fan motor output. The gas heated by the heating units or the gas cooled down by the cooling units is sent to the blowing nozzles 2 by a fan. Then, the blowing nozzles 2 blow the gas sent by the fan through their outlets. Each of the outlets has a non-circular planar shape with a projection portion thereof being projected inwardly. This allows a shape of the gas in cross section perpendicular to a direction where the gas is blown through the outlet of each of the blowing nozzles 2 to be changed by the projection portion with time (switching phenomenon). Such a switching phenomenon enables to be increased the heat exchanger effectiveness (heat transfer rate) on the printed board even if any output of the fan motor for rotating the fan does not increase.

Abstract: A device for cooling the opening of a rotary kiln via cool air-blowing, the kiln including a metal cylinder lined internally with a refractory material and being rotatably mounted relative to the frame of the kiln, into which materials are intended to be inserted and fired. The cooling device includes: the aforementioned cylinder and a metal cylinder end part covered with a refractory material and secured to the cylinder; two concentric metal casings, known as the inner and outer casing, which surround the cylinder of the kiln and form two annular channels; and ventilation elements that allow cool air to flow through the annular channels. The device includes: an annular distribution chamber which surrounds the cylinder, is secured thereto and supplies the first channel with air; ventilation elements including at least one fan and an electric motor actuating the fan, and supplying the distribution chamber in an air-tight manner.

Abstract: Provided is a substrate treating apparatus. The substrate treating apparatus includes a chamber, a support member disposed within the chamber to support a substrate, and an exhaust member for exhausting a gas within an inner space of the chamber to the outside of the chamber. A trap space for collecting fumes contained in the gas is defined in the exhaust member.

Abstract: A waste heat boiler has heat exchange tubes for indirect heat exchange of a relatively hot process gas and a cooling media, and a by-pass tube for by-passing a part of the process gas; a swirl mixer ensures mixing of the cooled process gas and the relative hot process gas exiting the heat exchange tubes and the by-pass tube.

Abstract: There is provided a drain recovery system with which power for driving a feedwater pump can be reduced and the feedwater pump can be driven at low costs. The drain recovery system includes: a buffer tank; an assist tank disposed below the buffer tank; a first drain supply line that connects a load device and the buffer tank; a second drain supply line that connects the buffer tank and the assist tank; a drain supply valve; a communication line that establishes communication between the assist tank and the buffer tank; a communication valve; a steam supply line that supplies steam from a boiler to the assist tank; a steam supply valve; a feedwater line that supplies drain from the assist tank to the boiler; and a feedwater pump.

Abstract: Disclosed herein is a use of pulsed combustion to convert chemical energy to usable heat. For example, in boilers, heat is generated by burning fuel at burners and transferring the heat to water or other fluids, including air, through heat exchangers. In one form, these heated fluids may then be utilized to assist in removing oil from oil sand reservoirs.

Abstract: A high efficiency downfired gas water heater is provided which has a tank for storing water to be heated, a combustion chamber extending downwardly through a top end of the tank, and a gas burner operative to create hot combustion products within the combustion chamber. At the bottom end of the tank is a transfer chamber coupled to an external discharge conduit and to a single pass heat exchanger, in the form of multiple flue tubes. extending vertically through the tank and connected to the combustion chamber. In one embodiment of the water heater the burner is a power burner which forces the combustion products sequentially through the combustion chamber, heat exchanger, transfer chamber and discharge conduit. In another embodiment of the water heater a draft inducer fan is used to draw the combustion products through this path from the combustion chamber.

Abstract: A coil support member is attached to a coil inside a water storage vessel and includes multiple openings, insertion portions and a non-insertion portion. The openings are arranged in a lengthwise direction, and together with surrounding sites prevent contact between mutually adjacent loops of the tube of the coil and suppress contact between an inner surface of the water storage vessel and an outer surface of the coil. The insertion portions are formed between the openings and are inserted into an intra-coil space located radially inward of the outer surface of the coil. The non-insertion portion is positioned in an extra-coil space located radially outward of the outer surface of the coil. The insertion portions have insertion body portions preventing contact between mutually adjacent loops of the tube, and engagement portions contacting the tube from the intra-coil space and maintaining an inserted state of the insertion body portions.

Abstract: A self-contained portable heating system to heat a stored liquid in a storage tank to a desired temperature is provided. The system can comprise operatively connected components such as a generator to power a burner that can transfer energy from a combustion product, from for example, a fuel supplied by an attached fuel tank, to a heat transfer fluid through the use of a boiler. The heat transfer fluid can transfer heat from the boiler to a heat exchanger which can then transfer heat to the stored liquid in the tank. The tank can also comprise a circulating pump that can circulate the heat transfer fluid and an expansion tank that can receive the heat transfer fluid when it expands as a result of being heated. In some embodiments, the heating components can be supplied separately from storage tank so that they can be retrofit onto an existing tank.

Abstract: A method for operating a steam generator comprising a combustion chamber having a plurality of evaporator heating surfaces which are connected in parallel on the flow medium side is provided. An object is to provide a steam generator which has a particularly long service life and which is particularly reliable. For this purpose, a flow medium is introduced into an inlet of a first evaporator heating surface at a temperature which is lower than the temperature of the flow medium introduced into the inlet of a second evaporator heating surface.

Abstract: A cleaning system and method for cleaning heat transfer surfaces in a boiler using a temperature measuring system for measuring and monitoring wall temperature of an annular wall of the tube of a lance of one or more sootblowers. Controlling a flow of steam or other fluid through the tube during the cooling portions of the strokes based on wall temperature measurements from the temperature measuring system. Infrared or thermocouple temperature measuring systems may be used. The steam or other fluid may be flowed at a default flowrate that may be substantially zero until the temperature measuring system indicates the wall temperature of the annular wall begins to exceed a predetermined temperature limit which may be the softening point of the annular wall. Then the steam or other fluid is flowed at a rate greater than the default flowrate.

Abstract: A hot water supply system includes a hot water storage tank configured to store hot water, a plurality of temperature sensors that are installed in the height direction of the water storage tank and that detect temperatures at their installed positions, a main-unit-side hot water supply device that heats hot water in the hot water storage tank, a sub-unit-side hot water supply device, a main-unit-side control board equipped with control means that controls the corresponding hot water supply device, and a sub-unit-side control board. Signals sent from the temperature sensors are input in a distributed manner among the main-unit-side control board and the sub-unit-side control board, and each of the control boards are communicably connected to each other by a transmission line.

Abstract: The invention relates to a tubular reactor with a rotating reactor chamber (9) for thermal treatment of biomass. It is characterized by the reactor chamber (9) being subdivided into zones by ring-shaped plates (10). These zones cause the particles to be retained in a particular area and thoroughly mixed there, i.e., the particles being treated are homogenized and the retention time also becomes more homogenous.

Abstract: The invention relates to a work apparatus for setting fastening elements in a substrate, with a fuel container and with a dosing device, through which the fuel is fed from the fuel container into a combustion chamber in which a flammable mixture is ignited, for setting a fastening element, and with a temperature sensor. In order to prevent undesired malfunctioning in the operation of the work apparatus or to reduce the incidence of such malfunctioning, the work apparatus comprises a container temperature sensor and a dosing temperature sensor.

Abstract: The method of generating immediate and thereafter continuous steam is used in a steam generating system comprising a steam accumulator, a steam outlet connected to the steam accumulator, an outlet valve at the steam outlet, and a quick response steam generator unit connected to the steam accumulator. The method comprises the steps of providing latent steam in the steam accumulator, opening the outlet valve to allow latent steam in the steam accumulator to exit through the steam outlet, feeding water to the steam generator unit, heating the water fed to the steam generator unit while the latent steam exits through the steam outlet and, before the latent steam has entirely exited the steam accumulator, generating steam with the steam generator unit to feed the steam accumulator and controlling the steam flow rate through the steam outlet to maintain it at a value which is essentially not greater than the steam flow rate from the steam generator unit to the steam accumulator.

Abstract: The invention provides a tunnel kiln for firing ceramic porous bodies which can fire ceramic porous bodies containing organic binders in a shorter period of time than in conventional methods without producing breaks or requiring nitrogen gas. The tunnel kiln includes a preheating zone 1, a firing zone 2, and a cooling zone 3 and fires the ceramic porous bodies loaded on a carriage 7 by driving it in a furnace. A heat storage regenerative burner 10 is used as means of heating the firing zone 2 so that low-oxygen-concentration exhaust gas discharged from the heat storage regenerative burner 10 may be returned to an exhaust gas return line 14 and supplied into the preheating zone 1. The exhaust gas return line 14 may be provided with a combustion device 17 that reduces the oxygen concentration by consuming oxygen contained in the exhaust gas.