328results about "Combined heat and power systems" patented technology

In an engine cogeneration system in which power generators 5 to 8 are driven by a plurality of engines 1 to 4 to thereby supply electric power to power load 22 of a general household, at the same time, heat produced by cooling each of the engines 1 to 4 and heat generated from the exhaust gas are recovered by heat exchangers 18 and 19 to be stored as hot water into a hot-water tank 20 to supply heat to heat load 21 of the general household, the amount of power to be supplied and of the amount of heat to be supplied are controlled by a number of the engines 1 to 4 and the combustion modes of these engines 1 to 4. This engine cogeneration system can follow both the head demand and power demand in a high efficiency.

A heating and power generating apparatus comprises: a frame installed on the roof of a building and having a predetermined area; a plurality of power generating units arranged inside the frame to collect sunlight and generate electricity; and a hot water supply unit buried inside of the frame to absorb sunlight and perform heating and hot water supply. According to the present invention, hot water can be generated by sunlight in the winter to supply hot water and heat a house, and power can be generated by sunlight in the summer to supply power for cooling a room and thus conserve the electrical energy used in a cooler, thus promoting energy saving and environmental protection.

A heat pump liquid heater for heating a liquid comprising: a heat pump; a liquid tank in heat communication with the heat pump, wherein the liquid tank comprises the liquid; and at least one metal condenser tube immersed into the liquid, wherein the metal condenser tube forms at least one coil. The metal condenser tube has a flattened double-tube configuration and a cross-section defined by concentric ovals such that at least a portion of the concentric ovals is in contact with one another thereby minimizing space between the flattened double-tubes. The heat pump comprises a tube-in-tube heat exchanger and a compressor, wherein the tube-in-tube heat exchanger recovers heat from refrigerant returning from the liquid tank and transfers the recovered heat to refrigerant going to the compressor thereby superheating the refrigerant.

Thermodynamic energy methods and systems that provides all electrical energy and heat needs of a single residential house, commercial business or office building. The system is small enough to be stored inside the house or building. The system can generate excess electrical energy which can be sold over a power grid and allow for the house owner, building owner or energy provider (utility company) to provide income. The method and system can have combined energy conversion efficiency up to approximately 97%. Components can include amorphous materials, and the mono-tube steam generator boiler which is explosion proof when punctured, and only emits a puff of steam when punctured. The tubes can be built to pressure vessel code. The invention can use steam generators to power A / C units, domestic hot water, hot water air space heaters, other loads such as pools and spas and underground piping to eliminate ice and snow. Additionally, the invention can be used to power vehicles such as cars, and the like. Other embodiments can use thermodynamic energy methods and systems that provides electrical energy and heat needs of a residence, commercial business, or office building, that include supertropically expanding ammonia vapor against a vacuum, as generated by chemosorption, in order to convert moderate amounts of heat into mechanical energy at high efficiencies. A supertropic package system can include a source of ammonia / water, a thermal generator for heating the source of ammonia / water and generating ammonia gas, a positive displacement device for expanding the gas, and generating electricity from a power source driven by the expander.

A fluid heater is disclosed and which has a heater, pump, and a plurality of temperature sensors which are electrically coupled with first and second temperature controlled relays, and wherein the fluid heater is operable to maintain a source of fluid used by an object of interest within a predetermined temperature range and further, is operable under given temperature conditions to discontinue operation so as to protect the object of interest and the heater from becoming damaged through overheating of the fluid which is utilized by same.