Matches 1 - 50 out of 173 1 2 3 4 >
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7415944 Heat exchanger suitable for a boiler, and a boiler including such a heat exchanger  
A heat exchanger comprising: gas flow path means for defining a flow path for flue gases from a boiler; liquid flow path means for defining a flow path for a liquid through the heat exchanger; and...
7360507 Energy saving apparatus  
An energy saving apparatus is described. The energy saving apparatus is attached to a standard gas-powered water heater. All gas-powered water heaters typically have an air vent which vents hot air...
7331312 Waste heat recovery apparatus and method for boiler system  
An apparatus and method for recovery of waste heat in a boiler system, wherein heat from the hot condensate water in the system, which otherwise would be lost through dissipation, is used for other...
6907846 Condensing gas boiler having structure of preventing corrosion caused by using heterogeneous metal  
A condensing gas boiler having a corrosion prevention structure of preventing corrosion caused by using heterogeneous metal is provided, which includes a casing provided with a combustion chamber...
6886501 Apparatus and process for heating steam  
An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a super heater arranged in the heat exchanger vessel, a process for heating steam performed in such...
6840199 Process for heating system  
A process for heating steam, in which steam is obtained by indirect heat exchange between liquid water and a hot gas; (b) the steam obtained in step (a) is heated by indirect heat exchange with the...
6799538 Heating apparatus using useless heat for reducing oil  
An environmentally-friendly heating apparatus which can collect and recover heat of exhaust gas discharged from a boiler in order to use the heat for heating an indoor space. The heating apparatus...
6766772 Apparatus for heating steam  
An apparatus for heating steam formed from cooling water in a heat exchanger for hot gas, having a superheater arranged in the heat exchanger vessel; a process for heating steam performed in such...
6672255 Flue gas energy transfer system  
A flue gas energy transfer system for increasing the efficiency of hot-water and/or steam boiler. They system utilizes an arrangement of heat transfer ducts with damper elements for the selective...
6564755 Preheating assembly for hot water system  
A heat recovery system includes a heat exchanger surrounding a flue pipe from a furnace for preheating water. The heat exchanger includes a sleeve surrounding the flue pipe to define an annular...
6536378 Apparatus for evacuating condensation from furnace pipe systems  
An apparatus for evacuating liquid condensation from pipe systems which is particularly applicable to exhaust pipe systems in high efficiency furnaces. The apparatus forms a junction sleeve between...
6145139 Supplementary water heater system for swimming pools and spa  
An improved swimming pool/spa water heating system whereby a portion of the water flow into the main heater unit (3), is preheated, thereby decreasing the time of operation of the main heater unit...
6021724 Cyclone furnace for retrofit applications  
An improved Cyclone furnace particularly suitable for retrofit applications to an existing boiler incorporates a Cyclone furnace and an integrated de-slagging chamber as a single manufactured...
5852990 Waste heat boiler  
A waste heat boiler for cooling a hot process stream includes a plurality of heat exchanging tubes within a cylindrical shell, an outlet chamber for withdrawing the cooled process stream, an...
5823175 Thermal protective barrier  
A thermal protective barrier is provided for space heating units in the form of a relatively thin panel having an interior volume filled with a non-combustible liquid (water and/or antifreeze mix,...
5730088 Heat recovery steam generator  
Heat recovery apparatus for extracting heat from a hot flue gas stream especially useful on a marine vessel. The apparatus includes a housing having opposite outer end walls, opposite outer side...
5626102 Heat recovery system for a boiler and a boiler provided therewith  
A heat recovery system for a boiler has a tank separator connectable to a boiler and receiving a liquid from the boiler as well as separating the liquid into a blow down liquid and a flush vapor, a...
5577661 Pool water heating and circulating system  
A pool heating and circulating system incorporates an internal combustion engine that drives a pump for developing a flow of water. The internal combustion engine has associated therewith an...
5560209 Arrangement for improving efficiency of a power plant  
A device for increasing efficiency of a power plant operated by burning fossil fuel has a boiler for heating a process medium. An inlet line is connected to the boiler for feeding a first process...
5452686 Waste heat boiler  
Waste heat boiler comprising within a cylindrical shell a plurality of heat exchanging tubes having an inlet end and outlet end; attached to the shell, means for introducing water on shellside of...
5406934 Heat recovery apparatus for use with a non-high efficiency furnace  
A heat recovery apparatus for increasing the efficiency of a furnace having a cold air return, a burner, a hot air outlet, and a hot air exhaust. The heat recovery apparatus comprising a finned...
5347958 Heat recovery apparatus and an improved heat recovery method  
An apparatus for recovering heat, and a flue gas recovery and/or recirculation and/or induced draft apparatus for boilers. The apparatus for recovering heat may be used in combination with the flue...
5305954 Heating systems  
A heating system comprises an oven located above a solid fuel stove, a chimney for receiving combustion gases from the solid fuel stove, and a heat exchanger in the chimney for transferring heat...
5299534 Single-drum recovery boiler  
A single-drum recovery boiler comprising a superheater (2), boiler bank elements (3a) forming a boiler bank, and elements (3b) forming an economizer. In the recovery boiler, a plurality of boiler...
5273002 Water tube boiler  
A water tube boiler comprises a furnace having a burner and a vertical flue gas stack located to one side of the furnace. A convection tube assembly is arranged in the stack for the recovery of...
5129331 Emissionless furnace boiler system  
An apparatus for separating and recovering effluent gases from a furnace includes a pressure vessel for containing the gases. This vessel has a fluid input for receiving the gases and a fluid...
5109807 High output mini hydronic heater  
An efficient compact modulating or fixed firing rate hydronic heater is provided. A slotted single piece baffle encloses the heat exchange surface which is a wound finned tube, and improves gas...
5097801 Waste energy hot water heater  
A waste energy hot water heater which extracts heat energy through heat exchange with flue gas from a primary heating device is disclosed. The water heater has an easily removable, compact, and...
5052345 Heating apparatus with a heat exchanger  
A heating apparatus including a burner and a heat exchanger wherein the burner supplies a primary fluid and exhaust gas to the heat exchanger. Secondary fluid supplied to the heat exchanger is...
5029442 Heat feeding apparatus for internal combustion engine having supercharger attached  
A heat feeding apparatus employable for an internal combustion engine having a supercharger attached thereto, the apparatus including a compressed air bypass passage opening/closing valve disposed...
5005542 Engine preheating device  
An engine preheating device for heating internal combustion engines prior to operation utilizes a propane torch and conventional propane supply tank. A hollow cylindrical housing is supported in...
4971025 Gas-powered apparatus for producing warm water and for heating an enclosed space  
This gas-powered apparatus comprises a substantially cylindrical combustion chamber having an inlet for the combustion air connected to the outside and an upper outlet connected to a burned gas...
4944250 Cyclone separator including a hopper formed by water-steam cooled walls  
A cyclone separator formed by a plurality of parallel tubes. A portion of the tubes form a cylinder, a portion are bent radially inwardly to form a roof and a portion are bent to form a hopper....
4938172 Supplement system for transferring heat from a furnace exhaust stack to a hot water tank  
A supplementary hot water heating system which transfers to a hot water tank heat from exhaust gas in the furnace stack which would otherwise be wasted. When the water in the supplementary heater...
4936505 Gas-fired coaxial water/air vehicle heater  
An improved gas-fired heater for supplying heat to a space, such as a vehicle cab, and simultaneously, heat to the engine block for running the vehicle. A heat exchanger simultaneously heats a...
4934451 Apparatus and method for conditioning air  
An apparatus and method for conditioning air is disclosed. The invention captures condensation from an evaporator coil and pumps the chilled condensation through a coil to precool the air before...
4911359 Apparatus for and method of recovering chimney heat  
This disclosure relates to a heating system for a building having a chimney, which heating system incorporates a heat collecting recovery unit including a recovery exchanger set atop the chimney,...
4909318 Method and apparatus for recovering heat from flue gases and for cleaning the same  
The present invention relates to a method for recovering heat and separating substances from a flue gas streaming through a heat exchange apparatus comprising a casing with heat exchange elements...
4892045 Condensate drain system  
A condensate drain system for a furnace incorporates a collector and blower housing assembly mounted above a secondary condensing heat exchanger with condensate ports between the blower housing and...
4887586 Heat recovery apparatus  
Apparatus utilizing waste heat from a furnace or the like to heat water for any desired purpose or to supplement a conventional heating system. In its illustrative embodiment, the invention...
4876986 Heat regenerator to recover both sensible and heat of condensation of flue gases  
A compact and maintenance-free means and method of regenerating the sensible heat from flue gases of fossil fuel furnaces by heat exchange through two circular layers of rock beds rotating under...
RE33082 Combustion product condensing water heater  
In a water heating system, vapor in the products of combustion gases is condensed in a secondary heat exchanger positioned in a housing with the primary heat exchanger and combustion chamber. The...
4871308 Method and apparatus for heating a fluid stream  
An improved method and apparatus for heating fluids wherein separate gas streams of natural gas and air are compressed to a preselected pressure, passed to an injection and mixing zone for thorough...
4848277 Calorific value boiler  
A calorific value boiler device for supplying heat to at least one user of heat contained in a heat medium via a first supply line and at least one return line. The device includes a boiler having...
4830093 Method and apparatus for utilizing waste heat in a combustion system  
An improved method and apparatus for recovery of waste heat of the type having a first heat exchanger which transfers heat to a working fluid and a second heat exchanger which transfers heat from...
4821682 Method and apparatus for utilizing waste heat in hot water heaters  
Normally wasted heat from the pilot burner and flue of a fuel fired hot water heater is used to preheat the water supplied to the main tank. An auxilliary storage tank receives incoming cold water....
4798240 Integrated space heating, air conditioning and potable water heating appliance  
Space heating and cooling and potable water heating are provided by a single appliance. The housing appliance is divided into four sections: a lower water storage section, a middle hardware...
4766883 Forced draft controlled mixture heating system using a closed combustion chamber  
A high efficiency forced draft water and space heater maintains a desired air to fuel ratio and efficiency in combustion regardless of changes in air inlet pressure. The heater uses a venturi type...
4751913 Apparatus for heating water  
An apparatus for heating water, especially a hot-water boiler. The apparatus has a combustion chamber and two or more heat exchangers that are disposed one above the other. The heat exchanger...
4726301 System for extracting contaminants and hydrocarbons from cuttings waste in oil well drilling  
A system wherein the contaminated cuttings are fed into the system for eventual incineration. The principal apparatus of the system comprises a plurality, preferrably three, of horizontally...
Matches 1 - 50 out of 173 1 2 3 4 >