50results about "District heating system" patented technology

The present invention relates to an energy system (1) and a method for operating the energy system (1), which comprises a hydrogen production unit (2) with at least one electrolyzer (3) for water electrolysis thermally coupled to a cooling water circuit (4), and a heat pump (5) whose heat source side (6) is thermally coupled to the cooling water circuit (4) and whose heat sink side (7) is connected to a district or commercial heating circuit (10) via a heat exchanger (8). According to the invention, a heat storage device (9) is provided in the district or commercial heating circuit (10), whose return line (11) is connected after the heat exchanger (8) and whose feed line (12) is connected before the heat exchanger (8) of the heat pump (5), so that the return temperature of the district or commercial heating circuit (10) is increased by heat from the heat storage device (9).

TITLE OF THE INVENTION: MULTI-SUPPORT COLLAR, SUPPORT DEVICE AND DISTRICT HEATING SUBSTATION COMPRISING THEM. The support collar (20) for at least one pipe comprises: - a body (21) formed from a metal plate and having a groove (22) whose sides have a succession of arcs of circles with diameters decreasing towards the bottom of the groove; and - a lateral part (23) folded along a crease parallel to an axis of symmetry of the groove, at a right angle to the rest of the body and having at least one opening (25) for the passage of a threaded rod. Figure for the abstract: Figure 2

The invention relates to a method for optimizing a district heating network (1) comprising outgoing supply pipes and incoming return pipes, wherein a heat carrying fluid is circulated to be utilized for residential and commercial heating requirements. For storing excess thermal energy available at the district heating network, the method involves the steps of implementing more than one ground-based borehole thermal energy storage (4) as distributed heat storages at different locations of or along the district heating network (1). Each heat storage (4) is adapted to receive thermal energy from various forms of heat sources, which heat sources may be found at different locations of or along the district heating network (1) such, that the heat sources and the heat storages forming nodes in the district heating network (1). Excess thermal energy available to one node of the district heating network (1) is used to charge a borehole thermal energy storage (4) at one or several nodes, and thermal energy available from the borehole thermal energy storages (4) is at disposal to be used to heat the heat carrying fluid circulated in the supply pipes of the district heating network.

This invention belongs to the technical field of heating equipment, specifically relating to a method and system for operating multi-stage pumps for long-distance heating. It includes the following steps: S1, calculating the total heat load demand Q based on the heat load requirement; S2, calculating the supply and return water temperature difference ΔT in the pipeline network; S3, calculating the target flow rate m required by the pipeline network; S4, establishing and running a digital twin model of the pipeline network with functions for resistance calculation, frequency setting, head calculation, and power consumption calculation; S5, setting the frequency of each pump station separately, and calculating the head, total pipeline resistance, power consumption, total head, and total power consumption of each pump station; S6, verifying the rationality of the scheme; S7, evaluating the economic efficiency of the scheme. Existing technologies lack consideration for the operating efficiency of different pump sets, the overall power consumption performance of the pump sets, and the power consumption methods of the pump sets. They fail to reduce the overall energy consumption of the pump sets by matching the pressure boosting capabilities of each stage of the multi-stage pump set, thus having certain limitations in terms of economic efficiency.

The invention relates to a flexible method and a system for production of hot water (district heating) by integration of a biomass heating system and an electrical heat pump system, so that district heating can be produced in an optimal way – with high efficiency via the heat pump system and / or the biomass heating system. Such high efficient and fuel flexible system is especially attractive when fuel- and electricity prices are varying.

This disclosure relates to a thermal energy storage plant for storing thermal energy from an energy source, the storage plant comprising: a liquid reservoir for being coupled to an energy source and compris- ing a reservoir volume with a top side, said top side coinciding with a liquid level of a thermal energy storage liquid in the liquid reservoir, and a surface cover comprising an insulating material, such as extruded polystyrene or mineral wool, for retaining thermal energy stored in said liquid, said surface cover at least partly covering said top side, said surface cover being divided into at least a first and a second surface cover segment positioned adjacently to each other and each comprising a circumferential periphery, wherein the first surface cover segment further comprises a first tilting device, wherein the second surface cover segment similarly further comprises a second tilting device, wherein the storage plant further comprises a solar energy system for harnessing solar energy, the solar energy system comprising at least one photovoltaic cell and / or a flowing fluid configured to be heated by solar energy, the solar energy system being mounted on a mounting system installed on and / or in and / or at an exterior surface of the first surface cover segment and / or on and / or in and / or at an exterior surface of the second surface cover segment.

The device (400) for constructing a district heating substation comprises: - at least one horizontal base (405), - uprights (170), - a plurality of legs (175) for securing the uprights in a vertical position on the horizontal base, and - on at least one vertical upright, a collar (210) configured to retain a pipe (270) in position.

The utility model discloses a novel heating equipment. The novel heating equipment includes screw water cooling unit, including the water outlet pipeline, return water pipeline, bypass pipeline, the fan -coil unit, air conditioner water distributor, condensing evaporimeter through the water outlet pipeline and connect gradually, and through return water pipeline, the cold water pump, air conditioner water collector that connects gradually, and the water outlet pipeline is connected with return water pipeline through bypass pipeline, condensing evaporimeter, hot water tank, hot water pump, install between hot water tank and the water inlet end of cold water pump, heat exchange return water pipe, install between return water pipeline and hot water tank, first valve, install on heat exchange return water pipe, be used for closing and opening heat exchange return water pipe. The utility model provides a kind of novel heating equipment, by setting hot water tank, hot water pump, heat exchange return water pipe and first valve access to existing screw cold water chiller unit, to realize heating effect, energy recovery, simple structure, reduce cost.

A method is provided for the controlled routing of hydronic flow within a climate control system. The method includes determining a condition type request for a plurality of area zones corresponding to a particular thermal zone. The method further includes determining a supply temperature type associated with at least a supply line of a primary supply loop and a supply line of a secondary supply loop. The supply temperature type is indicative of a thermal transport fluid temperature within the respective supply line. The method further includes providing an actuation signal set to a valve assembly. The actuation signal set is configured to describe a position for each value of the valve assembly and the position for each valve is based on the conditioning type request and the determined supply temperature types.

A method for identifying a deviation in a thermal energy circuit is presented. The method comprising: receiving (302) a first hot fluid flow measurement (f1) from a first hot fluid flow sensor (208) arranged in a hot fluid conduit (102); receiving (304) a first cold fluid flow measurement (r1) from a first cold fluid flow sensor (204) arranged in a cold fluid conduit (104); receiving (306) a second hot fluid flow measurement (f2) from a second hot fluid flow sensor (210) arranged in the hot fluid conduit (102) upstream the first hot fluid flow meter (208); receiving (308) a second cold fluid flow measurement (r2) from a second cold fluid flow sensor (206) arranged in the cold fluid conduit (104) downstream the first cold fluid flow sensor (204); receiving (310) a thermal device flow measurement (g) from a thermal device flow sensor (202) configured to measure a thermal device flow of a thermal device (106a) connected to the hot fluid conduit (102) downstream the first hot fluid flow sensor (208) and upstream the second hot fluid flow sensor (210), and to the cold fluid conduit (104) upstream the first cold fluid flow sensor (204) and downstream the second cold fluid flow sensor (206). The method further comprising upon (312) the first hot fluid flow measurement (f1) is different from the second hot fluid flow measurement (f2) and the thermal device flow measurement (g) in combination, generating (314) a first deviation signal indicating a deviation in the hot fluid conduit (102), or upon (316) the first cold fluid flow measurement (r1) is different from the second cold fluid flow measurement (r2) and the thermal device flow measurement (g) in combination, generating (318) a second deviation signal indicating a deviation in the cold fluid conduit (104).

The present invention relates to a method for controlling one or more heat pumps (110) connected to a distribution grid (10) for fluid-based distribution of heating and cooling in order to, at least partly, compensate for a cold outtake from the distribution grid (10) by a first cooling machine (120) connected to the distribution grid (10). Alternatively, or in combination, one or more cooling machines (120) connected to the distribution grid (10) may be controlled in order to, at least partly, compensate for a heat outtake from the distribution grid (10) by a first heat pump (120) connected to the distribution grid (10). The controlling is made a control server (200) monitoring outtake of heat and / or cold from the distribution grid (10) by the heat pumps (110) and cooling machines (120) connected to the distribution grid (10). The control server (120) generates and sends out control messages to the heat pumps and / or cooling machines.

The invention relates to a pipeline for transporting a medium within a medium pipe, wherein the medium pipe is surrounded by a casing pipe and insulation is arranged between the medium pipe and the casing pipe. The invention is characterized in that the medium pipe is arranged eccentrically to the casing pipe. Furthermore, the invention relates to a pipe system and a heating network with the pipeline according to the invention. The invention also relates to a method for manufacturing the pipeline according to the invention.

Disclosed herein, is an integrated thermal management system that efficiently manages the heat or cold flows while minimizing the energy loss and the space requirements with lower operational costs. The system herein comprises a distributed network of heat exchanging means with a flowing heat collector, the heat collector adapted to collect the waste heat from a plurality of sources through a thermal connection between each of the sources and the heat collector and the consumers. A centralized control unit is embedded in the system to control the extraction and absorption of heat between the heat collector and the sources and a centralized dissipation unit for releasing the extracted waste heat to the ambient air.

A method (1000) for adjusting a biasing pressure in a district thermal energy grid (100) comprising a plurality of distribution pumps (110, 112, 106a, 106b, 106c), the method (1000) comprising: Determining (1002), for each distribution pump (110, 112, 106a, 106b, 106c), an Available Net Positive Suction Head, NPSHA, for the respective distribution pump (110, 112, 106a, 106b, 106c); Identifying (1004) a risk distribution pump (110R, 112R, 106aR, 106bR, 106cR) among the plurality of distribution pumps (110, 112, 106a, 106b, 106c).

A method and system for detecting operational irregularities in a thermal energy exchange system. Thermal energy exchange system comprises a first side, a second side and an interface between the first side and the second side. Heating / cooling is generated at the first side upstream to the interface, and heating / cooling is consumed at the second side downstream to the interface. The interface is provided by means of a plurality of substations connected to the first side and the second side, each substation being configured to facilitate thermal energy exchange between the first side and the second side. Measurement data indicative of one or more operational parameters of the first side is obtained, wherein the measurement data is collected by means of a measurement system. The measurement data is monitored so as to identify operational irregularities at the interface and / or the second side.

The present invention relates to a heat-and-cooling system (1) for transferring heat from a heat producer (11) to a heat consumer (21) and for transferring cooling to the heat producer (11), wherein the heat-and-cooling system (1) comprises: - a heat-producing section (10) comprising one or more heat producers (11) configured to provide a first liquid (16) at a first heat-outlet (12) and receive a return-liquid at a return inlet (13); - a heat-consuming section (20) comprising a consumer return (23) and a second heat-outlet (22) wherein the second heat-outlet is configured for transferring a second liquid (26) to a heat consumer (21) and the consumer return is configured for receiving a return-liquid from the heat consumer (21); and - a heat-transferring section (30) arranged between the heat-producing section (10) and the heat-consuming section (20), wherein the heat-transferring section comprises: - a passive liquid-to-liquid heat exchanger (40) comprises at least two inlets (41,43) and outlets (42,44) and is configured to transfer heat from the first liquid (16) to the second liquid (26), wherein the first fluid flows through the first inlet (41) and the first outlet (43) and the second fluid flows through the second inlet (43) and the second outlet (44); and - a series of heat pumps comprising at least one or more heat pumps configured for transferring heat from the first liquid (16) to the second liquid (26), wherein a first heat pump (50) is downstream to the passive liquid-to-liquid heat exchanger (40), wherein the first liquid flows to the return inlet (13) and the second liquid flows to the second heat-outlet (22).

The present invention relates to a heat transfer system. The heat transfer system comprises a heating circuit (30) having: a feed conduit (34) for an incoming flow of heat transfer fluid having a first temperature, and a return conduit (36) for a return flow of heat transfer fluid having a second temperature, the second temperature being lower than the first temperature; a cooling circuit (40) having: a feed conduit (44) for an incoming flow of heat transfer fluid having a third temperature, and a return conduit (46) for a return flow of heat transfer fluid having a fourth temperature, the fourth temperature being higher than the third temperature; and a heat pump (50) having: a first heat exchanger (51) having a first circuit (52a) for circulating heat transfer fluid and a second circuit (52b) for circulating heat transfer fluid, wherein the first circuit (52a) has an inlet (53a) and an outlet (53b) connected to the cooling circuit (40), a second heat exchanger (54) having a third circuit (52c) for circulating heat transfer fluid and a fourth circuit (52d) for circulating heat transfer fluid, wherein the fourth circuit (52d) has an inlet (55a) and an outlet (55b) connected to the heating circuit (30), wherein the second circuit (52b) and the third circuit (52c) is a common circuit (56) of the first and second heat exchangers (51, 54); wherein the fourth temperature is lower than the second temperature.

A residential heating station (100) with a heat exchanger (300) is provided, featuring a first, second, third, and fourth connection (301-304). A first connection (301) is connected to a heating water supply (340), a second connection (302) to a heating water return (350), a third connection (303) to a domestic cold water return (360), and a fourth connection (304) to a domestic hot water supply (370). The residential heating station (100) also includes a thermostatic unit (200) with a temperature sensor (210) and a valve (220). The temperature sensor (210) extends at least partially into the fourth connection (304). The valve (220) is located in the heating water supply (340). A functional connection exists between the temperature sensor (210) and the valve (220), so that the valve (220) is controlled depending on the temperature of the water at the fourth connection (304) detected by the temperature sensor (210).

Thermal network comprising at least one plant, at least one end-user location (14,15), a pipe system (11-13) and a medium contained within said pipe system (11-13) said plant and said end-user location; said end-user location(s) (14,15) being connected to the plant through the pipe system (11-13). The thermal network according to the invention is characterized in that it comprises three main pipes (11-13) that are each connected to said plant(s) and wherein the medium is in a liquid state in the first and the third main pipe (11,13), and in a gaseous state in the second main pipe (12).

A modular fluid-fluid heat transfer arrangement (100) is disclosed. The arrangement (100) comprising first inlet and outlet junction pipes (111, 112), second inlet and outlet junction pipes (121, 122); and a plurality of heat pump modules (130a, 130b, 130c), each comprises: first inlet and outlet ports (131a, 131b); second inlet and outlet ports (132a, 132b); control means (133); and a refrigerant circulation path (134) including: a first heat exchanger unit (135) fluidly connected to said first inlet and outlet ports (131a, 131b); a compressor (136); a second heat exchanger unit (137) fluidly connected to said second inlet and outlet ports (132a, 132b); and an expander (138); wherein, when in use, said plurality of heat pump modules (130a, 130b, 130c) are connected in parallel to each other, by their respective first inlet and outlet ports (131a, 131b) being connected to said first inlet and outlet junction pipes (111, 112), respectively, and by their respective second inlet and outlet ports (132b, 132a) being connected to said second inlet and outlet junction pipes (122, 121), respectively. The disclosure further relates to a method (300) for controlling the arrangement (100).

A heat pump (100) comprising a first external inlet (102), a first external outlet (104), a second external inlet (106), and a second external outlet (108), and controlling circuitry configured to cause: measurement (10) of a first temperature (T1) at the first external inlet (102); measurement (20) of a second temperature (T2) at the second external outlet (108); setting (30) of an operating mode of the heat pump (100) based on the first temperature (T1) and the second temperature (T2) to one of: heat exchange mode, in which the heat pump (100) operates as a heat exchanger, heat pump mode, in which the heat pump (100) operates as a heat pump generating heat, and optionally cooling mode, in which the heat pump (100) operates as a heat pump generating coolness. Corresponding method and computer program product are also disclosed.

A residential heating station (100) with a heat exchanger (300) is provided, featuring a first, second, third, and fourth connection (301-304). A first connection (301) is connected to a heating water supply (340), a second connection (302) to a heating water return (350), a third connection (303) to a domestic cold water return (360), and a fourth connection (304) to a domestic hot water supply (370). The residential heating station (100) also includes a thermostatic unit (200) with a temperature sensor (210) and a valve (220). The temperature sensor (210) extends at least partially into the fourth connection (304). The valve (220) is located in the heating water supply (340). A functional connection exists between the temperature sensor (210) and the valve (220), so that the valve (220) is controlled depending on the temperature of the water at the fourth connection (304) detected by the temperature sensor (210).

The collar (20) for supporting at least one pipe comprises: - a body (21) formed from a metal plate and having a groove (22), the edges of which comprise a series of circular arcs, the diameters of which decrease towards the bottom of the groove, and - a lateral portion (23) that is folded, along a fold parallel to an axis of symmetry of the groove, at a right angle to the rest of the body, and that has at least one opening (25) for a threaded rod to pass through.

A method of determining a propagation delay of an advective propagation of a fluid property between an adjustment location and a downstream location of a fluid transport system, the fluid transport system comprising one or more conduits for transporting the fluid from at least the adjustment location to at least the downstream location, wherein a change of said fluid property occurring at the adjustment location propagates along the one or more conduits in dependence of the fluid flow along the one or more conduits, wherein the method comprises: providing a plurality of property propagation models, each property propagation model being configured for modeling propagation of the fluid property between the adjustment location and the downstream location, each property propagation model being based on a respective candidate propagation delay; evaluating a performance of each of the plurality of property propagation models; selecting one or more of the plurality of property propagation models based on the evaluated performance; determining an estimated propagation delay from the one or more candidate propagation delays of the selected one or more property propagation models.

The invention relates to a low-temperature heat network for supplying buildings with heat for heating and for hot water, wherein, in a building station, a heating-circuit return of a heating circuit of the building is connected to the primary side of a heat pump in order to draw heat from the heating-circuit return and to feed said heat to the primary side of the heat pump as an additional primary heat source, in addition to the room outgoing air, and / or wherein a transfer station comprises a heat pump, which comprises a primary side having an absorbing heat exchanger connected between the return of a network heat exchanger, the network heat exchanger heating a thermal temporary store, and a network return and comprises a release side having a releasing heat exchanger by means of which the heat drawn from the return of the network heat exchanger can be additionally released to the temporary store.

A method of operating an HVAC system that includes a thermal energy source and a thermal energy transfer device, using a flow regulating device arranged to regulate a flow rate of a fluid between the thermal energy source and the thermal energy transfer device, the method including determining a supply temperature of the fluid, determining a return temperature of the fluid, determining the flow rate of the fluid, and regulating the flow rate of the fluid such as to maintain a target temperature difference between the supply temperature and the return temperature, while ensuring that the return temperature is above a minimum return temperature threshold and the flow rate is above an operational flow rate threshold of the thermal energy transfer device.