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7575001 |
Solar and heat pump powered electric forced hot air hydronic furnace
A furnace and method using a heat pump for providing domestic hot water and forced hot or cooled air utilizing heat pump achieved efficiency levels in an on-demand and unlimited domestic hot water,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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5718374 |
Heating device
The invention relates to a heating installation. The installation comprises a closed liquid circuit which is under pressure during operation, a pressureless liquid reservoir, an actuable pump with...
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5704545 |
Climate control system
A heating system that allows independent control of the temperatures within different rooms in a building by independently controlling the flow of heating fluid to each room in response to a...
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5697551 |
Heating system of the type for apartments or offices in buildings
A water heating system for a number of apartments or offices 10 each having a water store 15 for receiving hot water from a common boiler 12. The system includes a temperature sensor S2 for sensing...
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5695118 |
Fluid control system
A method of operating a fluid control system and a distribution valve thereto. The fluid control system comprises a heat source (1) for a heat medium and several distribution valves (6) for...
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5692676 |
Method and apparatus for saving energy in circulating hot water heating systems
A method for automatically adjusting the temperature of the boiler water in a hot water heating system in proportion to changes in the heat demand rate in the space heated by the boiler water...
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5622221 |
Integrated zoning circulator with priority controller
An integrated zoning circulator includes a priority controller, integral with the zoning circulator, for determining the priority given to the circulator in an individual zone of a multi-zone...
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5590832 |
Hydronic heating system with high and low temperature shock protection
A hydronic heating system having a boiler system supplying relatively hot supply water in a boiler supply line to a heating body or to a heat exchanger that feeds hot water to such a body and a...
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5586720 |
Hot water supply system with a ring pipeline
A hot water supply system is provided, which includes a ring pipeline which extends through a water heater and in which water circulates, before going through tap pipelines to taps. The circulation...
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5573183 |
Method and apparatus for heating building and ventilation air
A method and apparatus for heating room space of a building. According to the invention, heat is conveyed from district heating water to a heating liquid of heating circuits for heating the...
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5501265 |
Fluid flow control for HVAC system with valve position readjustment to equalize conditioning rates in multiple zones
A process is disclosed for adjusting the valve position of flow control valves which govern the flow of a heat exchange fluid to a plurality of individually controlled zones. The process resides...
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5470019 |
Device for controlling heating boilers
A device for heating boilers (1) in heating plants comprises a means (2) for heating a heat carrying medium present in the boiler and circulating out thereof in the heating plant as well as a means...
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5443207 |
Integrated zoning circulator
An integrated wet-rotor zoning circulator for circulating fluid within a zone in a hydronic heating or cooling system. The zoning circulator has three primary components: a motor, an impeller...
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