Matches 1 - 50 out of 347 1 2 3 4 5 6 7 >


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8162233 Vehicle supplemental heating system including pressure relief diaphragm  
Disclosed herein is an exemplary liquid heat generator including a housing and a rotor disposed within the housing. A flexible pressure relief diaphragm is attached to the rotor. The pressure...
8162232 Water storage device having a powered anode  
A dry-fire protection system and method. The dry-fire protection system includes a tank, a heating element, a powered electrode, a sensor, and a microcircuit. The heating element and the powered...
8141623 Automatic switching two pipe hydronic system  
Disclosed is an automatic switching two pipe hydronic system for conditioning a space. In one embodiment the two pipe hydronic system enables automatic switching from a first mode of operation to a...
8113440 Vehicle supplemental heating system including spool valve manifold  
Disclosed herein is an exemplary supplemental heating system including a liquid heat generator having a hydrodynamic chamber for selectively heating a fluid. The supplemental heating system further...
7996182 Water heater monitor/diagnostic display apparatus  
A water heater is provided with monitor/diagnostic display apparatus that selectively provides a user with visual or other type of indicia of the overall efficiency of the water heater. The...
7942144 Heating system and apparatus  
A heating apparatus and a system that utilize friction to generate thermal energy. The heating apparatus comprises a housing unit, a plurality of heating chambers for generating heat, an actuating...
7819334 Multi-stage boiler staging and modulation control methods and controllers  
Methods and devices for controlling multi-stage boiler systems. In one illustrative embodiment, the number of stages to be used is determined in a staging control sequence in response to a heating...
7818095 Water heater monitor/diagnostic display apparatus  
A water heater is provided with monitor/diagnostic display apparatus that selectively provides a user with visual or other type of indicia of the remaining hot water availability of, the recovery...
7814869 Hot water supply system  
The present invention provides a hot water supply system using at least two water heaters having versatility to realize switching between a single hot water supply operation mode and a connected...
7661469 Synchronized thermal management method  
A method of cooling a plurality of devices operated in parallel and heated by relatively long duration pulses using a single coolant flow channel to the devices in series that transports the heat...
7658335 Hydronic heating system  
A hydronic heating system for a building includes condensing and non-condensing boilers in a hybrid arrangement. A control apparatus receives information from one or more condition sensors, such as...
7628123 Combined hot water supply system  
A water heater constituting a combined hot water supply system opens, in starting operation in response to an instruction from a connection controller in STEP 1, a water-supply servo valve to an...
7628337 Secondary heating system  
A heating system operates in supplemental mode to carry water from a hot water supply of the water heater to a heat exchanger within an air passage in the furnace. A water return passage returns...
7509927 Hydraulic header for a heating system  
A hydraulic header for a heating system includes a header housing having a vertical longitudinal axis in an installation position and a water chamber formed in an interior of the housing. A boiler...
7284710 Heating system  
A heat management system is capable of managing unlimited hydronic heat sources and unlimited heating zones, each located within a desired area and each controlled by temperature sensors. The...
7162987 Method and apparatus for maintaining warm engine temperature  
A portable apparatus for temporarily warming a plurality of vehicle engines includes a warm fluid circulation loop; an engine fluid circulation loop; a fluid heater; a fluid to fluid heat...
7055760 Temperature maintaining apparatus and temperature control apparatus and method therefor  
A method and apparatus are provided for maintaining a temperature between a first value and a second value. The method and apparatus utilize a heat transfer device capable of cycling through a...
7007858 Compact boiler with tankless heater for providing heat and domestic hot water and method of operation  
A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate...
6990830 System and method for supplying consumers with heat energy or with cooling energy  
A system and method supplies users with heat energy or cooling energy via a carrier medium. At least one source of heat energy or chilling energy has an output line that is connected to the input...
6945324 Controlling method for the discharge of coolant medium in the heat exchange wind box  
The invention relates to a controlling method of the discharge of coolant medium, and more particularly to a controlling method of the discharge of coolant medium in the heat exchange wind box. By...
6820818 High efficiency hydronic heat system  
A high-efficiency hydronic heating system will make use of a direct-fired steam generator to directly heat the water in the hydronic heating system. The products of combustion, present with the...
6708083 Low-power home heating or cooling system  
The invention provides a low electric power-consuming heating or cooling system comprising a DC powered microprocessor-based control system and method and a DC powered electrically actuated zone...
6695046 Variable speed fan motor control for forced air heating/cooling system  
A fan motor speed control system for controlling the fan motor speed of an air conditioning system includes a power output circuit including a power triac which is turned on and off by an...
6607141 Decentralized pumping system  
Decentralized centrifugal pumps (62) with variable speed drivers located at cooling or heating coils (74) are utilized to circulate and regulate liquid through the coils, main supply line (42), and...
6547153 Heating and cooling system using frictional air heating  
A frictional heating system for communicating with an air supply duct to heat and cool air in a building, including an enclosure defining an interior, two air inlets, and at least one air outlet...
6439469 Predictive apparatus for regulating or controlling supply values  
A predictive apparatus for controlling or regulating supply values (T_VRL) includes a first data store in which rules, based on a linear consumer model, for calculating process values are stored, a...
6390381 Control unit and process for adjusting the heating loops in large area heating systems and to control the adjusted heating loops  
A control system for the room temperature in large area heating systems comprises a feed-line manifold and a return-line manifold and for each heating loop an electrically activated throttle valve....
6378777 Natural draft water heater  
The invention relates to a water heater comprised of a cylindrical tank 18 which has a central flue 20 that is mounted with the cylinder axis 40 vertical. The water heater further includes a gas...
6354511 Portable system for heating water  
The present invention provides an apparatus for heating water. In certain embodiments, the present invention relates to a portable apparatus for heating water that may also be self-contained such...
6352106 High-efficiency pumping and distribution system incorporating a self-balancing, modulating control valve  
The present invention is a new self-balancing modulating control valve for use in a variable-flow fluid distribution system supplying a plurality of loads, which when installed at each load permits...
6345769 Water heating apparatus with sensible and latent heat recovery  
A water heating apparatus having structure for recovering sensible and latent heat from flue gases generated in a heater thereof and transferring the heat to water to be heated. The apparatus has a...
6299071 Hydronic heating with continuous circulation  
In a hydronic heating system having a boiler hot supply water line and boiler return water line, a main hot supply water circulation loop from the boiler supply water line to the boiler return...
6237855 Direct current electrical controls for heating systems  
A method and apparatus for controlling the normal operation of a hydronic heating system, (including AC powered, gas-burning hot water boiler, multi-zone systems) using a DC power source, such as...
6220520 Manifolds for use in water heat distribution systems  
A modular manifold includes master modules and possibly also slave modules which each provide a respective terminal unit with a relatively constant rate of water flow at a modulated supply water...
6131536 Infrared and gas fluid heater system  
An instantaneous fluid heating system includes a fluid source, a use point for intermittently demanding fluid from the fluid source, an instantaneous IR gas heater, and a temperature sensor...
6102297 Back-up auto-thermostatic modulating regulator  
An automatic modulating regulator device and method of operation for use with a non-electrical hot water heat source supplied by a pressurized water supply. The hot water heat source has a hot...
6092734 Manifold for connecting circuits of a central heating system  
A manifold connects three boiler circuits and a heat exchanger circuit and an indirect cylinder heated exchanger circuit of a central heating system together. The manifold comprises a container...
6062485 Radiant heating system reset control  
A control unit and a related method of operation for controlling the temperature of the water circulated in the radiant loop of a hydronic heating system. The control unit includes temperature...
6032868 Combined hot water and space heater  
An apparatus and method are disclosed for supplying domestic potable hot water and also heating an air space using a single combination unit having a common water tank and heat source for heating...
6030504 Control circuit for water distiller  
A distiller control circuit includes a power bus with first and second lines and a fan circuit connected across the lines and having a fan motor and a fan thermostat in series. There is also a...
5979781 Hydronic heating with satellite distribution stations for multi-temperature supply water to heating loops  
A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a supply water line from the source, a return water line to the reservoir and a multitude of...
5979782 Fireplace heat transfer system with internally driven fluid flow mechanism  
A heat transfer system for use with a conventional fireplace for radiating heat at a remote location from the fireplace. The heat transfer system includes a network of interconnecting conduit...
5847266 Recovery boiler leak detection system and method  
An improvement is disclosed for a boiler leak system that (a) measures fluid input into the recovery boiler system, (b) measures fluid output from the recovery boiler system, and (c) calculates...
5839655 Hot-water heating system  
A hot-water heating system has a heater for producing hot water, a heat radiator, a supply pipe for supplying them hot water from the heater to the heat radiator, a return pipe for returning the...
5816494 Summer operation apparatus for a heating system  
A summer operation apparatus for a circulating water heating system includes a separate auxiliary device installable in connection with the system controller. The auxiliary device includes an...
5794845 Flow control device and hot-water type heating apparatus employing the same  
A plurality of flow control valves is correspondingly provided to a plurality of heater core portions. Each of the flow control valves is provided with a first restriction portion formed in an...
5788149 System for supplying consumers with heat energy, and apparatus therefor  
The system allows selective supply of heat energy to consumers at different temperature levels. A carrier medium heated in at least one heat source such as an environmental collector and a heat...
5779143 Electronic boiler control  
A hydronic heating system including a single self-contained hydronic control unit. The hydronic control unit allows for zoned heating operation in which a series of individual room thermostats and...
5775581 Dual heat source heating system  
A heating system for heating a building with at least a first zone and a second to be heated. The heating system includes a first heating source and a second heating source. The heating system...
5772113 Two-pipe heat pump system with isolated tank coil for domestic hot water  
An engine-driven heat pump system is disclosed in which the waste heat from the engine is used to only heat the water contained in a water heater. Space heating may be then provided by circulating...
Matches 1 - 50 out of 347 1 2 3 4 5 6 7 >