摘要:
A trench heater includes a case, a connecting unit, and a sub-assembly unit. The sub-assembly unit includes a baffle, a first junction panel, a second junction panel, and an electrical heating unit. The electrical heating unit includes a heating unit that comprises a heating element, a body, and a granular heat transfer medium. Multiple trench heaters may be connected end to end to create longer lengths via a modular platform.
摘要:
An apparatus for lighting a burner of a heat exchanger includes a mounting plate configured to be mounted to the heat exchanger, the mounting plate including a first and second opening, a pilot ignition rod assembly installed in the first opening, the pilot ignition rod assembly including a flame ionization rod and a terminal, and a sleeve coupled to and aligned with the second opening and configured to extend substantially through a refractory material lining a combustion chamber of the heat exchanger, the sleeve being joined to a ground rod on a distal end and a gas orifice mount on a proximal end, the gas orifice mount including a gas venturi surrounded by the sleeve, wherein the sleeve is sized to extend from the mounting plate through an opening in the refractory material lining the combustion chamber, wherein the sleeve includes a sleeve opening adjacent to the gas venturi, the sleeve opening configured to allow air from the combustion chamber to the gas venturi.
摘要:
Systems and methods are directed to water heater systems, including combi boilers and instantaneous water heaters, for initiating pre-heat and energy savings operations. Embodiments of the present invention can include at least one heat exchanger configured to heat water; and a control system in communication with the at least one heat exchanger. The control system can be configured to at least determine an expected flow demand for hot water; sense water temperature at one or more locations, including at a domestic hot water outlet; determine an end to the expected flow demand for hot water; upon receiving an indication to end the flow of hot water, initiate a recovery demand determination; and initiate a pre-heat operation based on the recovery demand determination.
摘要:
A non-clogging liquid distribution assembly especially adapted for use in counterflow water cooling towers is provided which includes a hollow-cone, swirl-type nozzle and a series of circularly arranged, arcuate water-dispersing buttons disposed below the nozzle for breaking up water sprayed from the latter and uniformly dispersing the same over a relatively wide planar area in order to ensure adequate water cooling. The configuration and orientation of the buttons is carefully chosen so as to ensure that individual water particles from the nozzle angularly impinge against the dispersing buttons for maximum water breakup. The assembly is constructed for safely clearing foamed plastic or cellular synthetic rubber balls conventionally placed in cooling water systems to clear condenser tubes or the like. These balls are sized for a particular condenser tube system and vary from 1/2 in. to 11/2 in.
摘要:
A simplified, selectively actuatable deicing apparatus for evaporative water cooling towers is provided which permits selective delivery of hot water from the upper distribution basin to the outer margin of the tower for deicing of the fill structure and inlet louvers thereof in order to maintain adequate airflow through the tower during sub-freezing ambient conditions. The deicing apparatus includes structure defining a substantially continuous water passageway or slot in the distribution basin adjacent the outer margin thereof, in combination with valving devices in the form of a series of elongated, individually shiftable cover members which can be selectively raised to permit flow of hot water through the slot in sufficient quantities to deice the outermost areas of the tower which are prone to ice clogging. In preferred forms the cover members are controlled by a series of lifting mechanisms having flexible bladders which can be variably filled with a fluid such as air or nitrogen and expanded in order to lift the cover members away from the underlying slots to thereby permit flow of hot water therethrough for deicing operations.
摘要:
A dual path drift eliminator and method is provided which effectively removes entrained water particles from high velocity moist airstreams leaving a crossflow cooling tower fill structure by the use of spaced, cellular, individually draining, diversion path-defining structures strategically located and arranged to facilitate maximum drift elimination. The drift eliminator has a plurality of elongated air passages therein disposed to first divide the moist air from the tower fill into a series of separate streams which are first diverted at an upward angle relative to the initial path thereof, and thereafter rediverted laterally to one side of the first diversion path. Water particle removal is thus greatly enhanced by virtue of increased impingement of the entrained particles against the cellular walls defining the respective diversion paths. The eliminators hereof have special advantages in crossflow cooling towers because the spacing between the diversion path defining cellular structures permits separate draining of the water collected in each, so that air inlet blockage resulting from the accumulated drainage of large volumes of water from a single drainage area is avoided. The eliminator structure preferably includes a number of juxtaposed pairs of spaced, elongated, transversely corrugated, preformed sections sandwiched between elongated, preformed, transversely V-shaped panels to define a structurally distinct eliminator pack which can be manufactured using assembly line techniques; such packs are moreover of nestable configuration permitting complemental positioning of a plurality of packs to present a substantially continuous drift eliminator unit free of objectionable vertical gaps, notwithstanding the lack of conventional shiplap joints or other mechanical interconnection between individual eliminator packs.
摘要:
Systems and methods are directed to water healer systems, including combi boilers and instantaneous water heaters, for initiating pre-heat and energy savings operations. Embodiments of the present invention can include at least one heat exchanger, a plurality of temperature sensors sensing water temperature at one or more locations within the water heater system, and a control system in communication with the first and second heat exchangers. In embodiments, the control system can be configured to at least: determine an expected demand for hot water, determine a target modulation rate based on the plurality of temperature sensors, and the expected demand, monitor the plurality of temperature sensors and a flow rate, and update the modulation rate based on at least one of a detected change in flow rate and a detected change in at least one of the plurality of temperature sensors.
摘要:
Systems and methods are directed to water heater systems, including combi boilers and instantaneous water heaters, for initiating back up operations, e.g., for continuous flow and hot water delivery, in response to errors or interruptions to normal operations. Embodiments of the present invention can include, a plurality of heat exchangers, including a domestic hot water outlet, temperature sensors sensing water temperature at one or more locations within the water heater system, a control system. The control system can be configured to at least: monitor the water temperature measured by the first temperature sensor, identify an abnormality in monitoring the water temperature, initiate am alternative operation to sense water temperature via an alternate pathway and heat water to a set point value during the abnormality, and deliver water heated to the set point value during the abnormality.
摘要:
An apparatus for lighting a burner of a heat exchanger includes a mounting plate configured to be mounted to the heat exchanger, the mounting plate including a first and second opening, a pilot ignition rod assembly installed in the first opening, the pilot ignition rod assembly including a flame ionization rod and a terminal, and a sleeve coupled to and aligned with the second opening and configured to extend substantially through a refractory material lining a combustion chamber of the heat exchanger, the sleeve being joined to a ground rod on a distal end and a gas orifice mount on a proximal end, the gas orifice mount including a gas venturi surrounded by the sleeve, wherein the sleeve is sized to extend from the mounting plate through an opening in the refractory material lining the combustion chamber, wherein the sleeve includes a sleeve opening adjacent to the gas venturi, the sleeve opening configured to allow air from the combustion chamber to the gas venturi.