162results about "District heating system" patented technology

Underground seasonal heat storage systems, characterized in that the storage medium can consist of different solids or liquids, and the storage system includes one or more devices for heating and one or more devices for recovering the heat.

The disclosure relates to a method (500) for controlling a decentralized heat pump system (100). The system (100) comprising: a first set (110) of one or more heat pump modules; and one or more second sets (120a-c) of one or more heat pump modules (121, 122, 123, 124); the method (500) 5 comprising: determining (S502) at least one of an outdoor temperature, and data pertaining to an electric grid status of an electric grid (150, 160a-c), determining (S504), based on at least one of said outdoor temperature, and said data pertaining to the electric grid status, and, optionally, a specification of the system (100): an ambient side fluid recirculation loop temperature set 10 point of a working fluid of an ambient side fluid recirculation loop (102); detecting (S506) a temperature of the working fluid of the fluid recirculation loop (102); and controlling (S508) an operation of the first set (110) to adjust the first working temperature of the working fluid of the fluid recirculation loop (102) to match said ambient side fluid recirculation loop temperature set point.

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).

The present invention relates to a heat exchange substation (50) of an energy distribution system comprising: a heat exchanger (51) with thermal inertia comprising a primary side (37a) connected to a primary supply line (36) and to a primary return line (37) and a secondary side (37b), opposite the first primary side (37a), the secondary side (37b) being connected to a secondary supply line (56) and to a secondary return line (57) of a secondary heating circuit (68), the secondary supply and return lines (56, 57) being in communication with one or more heating units (18), wherein the heat exchanger (51) comprises a tank (67) within which a first shell- and-tube circuit (81) is arranged connected at the inlet to the primary supply line (36) and at the outlet to the primary return line (37) and a second shell-and-tube circuit (82) connected at the inlet to the secondary return line (57) and at the outlet to the secondary supply line (56), and the tank (67) contains a phase change material (71), the first shell-and-tube circuit (81) and the second shell-and- tube circuit (82) being in contact with the phase change material (71).

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.

A system and method for providing electrical power which includes: a hybrid solar thermal collector 608 including a photovoltaic (PV) module, wherein the solar thermal collector converts a first porti

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.

A method for a thermal grid (100) is provided. The thermal grid (100) comprises a warm pipe (10) and a cold pipe (20), and the method comprises: determining a grid demand balance indicator value (5), associating a current temperature region for the warm pipe (10) and / or the cold pipe (20) of the thermal grid (100) as a balanced temperature region (115) or as an unbalanced temperature region (110, 120) based on the grid demand balance indicator value (5), selecting a balanced control algorithm or an unbalanced control algorithm for the thermal grid based on the current temperature region, and controlling the thermal grid by the selected control algorithm.

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.

A method (200) for controlling an operation of a modular fluid-fluid heat transfer arrangement (100) comprising a plurality of heat pump modules (130a, 130b) comprising a control unit (133) being connected to each control unit (133) of the other heat pump modules (130a, 130b) over a communication channel (140), and a memory (139) in which heat pump module configuration information relating to the associated heat pump module (130a, 130b) is stored, the method (200) comprising: a) transmitting associated heat pump module configuration information on the communication channel (140); b) receiving the associated heat pump module configuration information; c) storing said received heat pump module configuration information so as to provide a heat transfer arrangement configuration information; d) determining, based on the heat transfer arrangement configuration information, a master control unit selected from the control units (133), the control units (133) that are different from the master control unit are defined as slave control units; and e) transmitting operation control information from the master control unit to the slave control units. The disclosure further relates to a modular fluid-fluid heat transfer arrangement (100).

The invention relates to an energy system (1) and to a method for operating an energy system (1). Said energy system comprises: a hydrogen production unit (2) having at least one electrolyzer (3) for water electrolysis, said electrolyzer being thermally coupled to a cooling water circuit (4); and a heat pump (5), the heat source side (6) of which is thermally coupled to the cooling water circuit (4) and the heat sink side (7) of which is coupled via a heat exchanger (8) to a district heat or useful heat circuit (10). According to the invention, a heat store (9) is incorporated into the district heat or useful heat circuit (10), the return line (11) of which is connected downstream of the heat exchanger (8) and the feed line (12) of which is connected upstream of the heat exchanger (8) of the heat pump (5), such that heat from the heat store (9) can be used to raise the return temperature of the district heat or useful heat circuit (10).

A heat network 100 comprises a plurality of components including a heating unit (e.g. heat pump 150 and / or electric heating elements 170) to heat water, pipework to circulate water and at least one flow control 140 (e.g. pumps, valves) to control the flow of water. One or more sensors 130 generate sensor data with respect to the plurality of components. A method of controlling the heat network by a control device 110 comprises: receiving sensor data from the sensor(s); determining at least one network performance metric based on the received data; and evaluating deterioration of the heat network based on the determined at least one network performance metric. In another aspect, a method of predictively maintaining the heat network comprises determining a trend of deterioration of the heat network based on the evaluated deterioration and projecting when maintenance of the heat network is required based on the trend. A system for controlling a heat network using a remote server that controls the heat network based on at least one network performance metric is also claimed.

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 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.

A method for controlling a heating system (1) consists in : - determining whether or not oscillations are occurring in a secondary side supply temperature, T22, - In the case that oscillations are occurring in the secondary side supply temperature, T22, a simulation procedure is initiated, in which a parametrized model (210) of at least the heat exchanging unit (2) is provided (120), operational data is measured in the heating system (1) and provided to the parametrized model (210); an operating point where the heat exchanging unit (2) operates at steady state is estimated, by means of the parametrized model (210). - based on the provided measured operational data, at least one operating parameter for the controller which is defined by the estimated operating point is provided to the controller (5) and the heating system (1) is operated based on the provided at least one operating parameter.

A method of operating an HVAC system (1) using a flow regulating device (10) arranged to regulate a flow rate (F) of a fluid between a thermal energy source (100) and a thermal energy transfer device (200) of the HVAC system (1). The method comprising the steps of determining a supply temperature (Ts); a return temperature (Tr) and a flow rate (F) 5 of the fluid and regulating the flow rate (F) of the fluid such as to maintain a target tem-perature difference (dTt) between the supply temperature (Ts) and the return temperature (Tr), while ensuring that the return temperature (Tr) is above a minimum return tempera-ture threshold (Trmin); and that the flow rate (F) is above an operational flow rate thresh-old (Fmin) of the thermal energy transfer device (200).

A heat exchanger (20) for a heating network, in particular a cold district heating network or long-distance heating network, with at least one heat transfer surface for transferring heat from a network fluid of the heating network to a building heating fluid of a building heating system of a building (7), in particular a residential building, wherein at least one flow connection (5) for the building heating fluid and at least one return connection (5) for the building heating fluid are provided, is proposed, which is improved compared to the state of the art, in particular reducing the effort and / or increasing the energy efficiency and the economic efficiency and / or realizing new functionalities.This is achieved according to the invention by the heat exchanger (20) being designed as a ground heat exchanger (20), wherein the ground heat exchanger (20) has at least one ground contact surface for the ground and wherein the ground heat exchanger (20) has at least one heat network inlet (21) for receiving a heat network line (1), in particular a heat network pipe (1), of the heat network, wherein the heat network inlet (21) comprises at least the heat transfer surface.

TITLE: DEVICE FOR CONSTRUCTING A DISTRICT HEATING SUBSTATION AND THE SUBSTATION COMPRISING IT. The device (400) for constructing a district heating substation comprises: - at least one horizontal base (405), - uprights (170), - a plurality of supports (175) for fixing uprights in a vertical position on a horizontal base, and - on at least one vertical upright, a collar (210) configured to retain a pipe (270) in position. Figure for the abbreviation: Figure 7

A thermal energy balancing device (400) Is provided which is connected to a thermal energy circuit (100) comprising a hot conduit (120) and a cold conduit (140) configured to allow a district heat transfer liquid to flow therethrough. The device (400) comprises: a warm well (810); a cold well (820); a heat exchanger (600) comprising a primary side (610) and a secondary side (620); a primary side valve arrangement (500) connecting the primary side of the heat exchanger (600) to the cold conduit (140) and to the hot conduit (120); and a secondary side valve arrangement (700) connecting the secondary side of the heat exchanger (600) to the cold well (820) and to the warm well (810). The device (400) is configured to be selectively set in a heat exhale mode and in a heat inhale mode.

An image construction method and system for a heating area is provided. The method includes: obtaining an initial image according to a heating structure diagram and a building structure diagram of the heating area; segmenting the initial image according to heating attribute of the heating area to obtain a plurality of segmentation sub-graphs; performing first collection on a surface temperature of a heating pipeline according to pre-deployed surface devices corresponding to the segmentation sub-graphs, and setting first heating labels corresponding to the segmentation sub-graphs, and meanwhile, performing second collection on a regional temperature of a sub-area of the heating pipeline being located according to a pre-deployed monitoring device corresponding to the segmentation sub-graphs, and setting second heating labels; performing position and temperature analysis on a label setting result of each of the segmentation sub-graphs to obtain a heating image of the heating area.

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.

Shown and described is a two-zone heat storage device for district heating systems, comprising a container (1) which can be connected to at least one heat-emitting system and at least one heat-absorbing system and which has a container wall (2) and a base (3), wherein the container (1) has an upper zone (4) and a lower zone (5), wherein an intermediate roof (6) is arranged between the upper zone (4) and the lower zone (5), wherein the lower zone (5) has at least one lower loading and unloading device (8) and at least one upper loading and unloading device (7), wherein the upper zone (4) and the lower zone (5) are connected to one another via at least one first equalizing line (11'), and wherein the upper zone (4) and the lower zone (5) can be filled with a heat transfer medium, as well as a method for operating a two-zone heat storage device.In order to be able to adjust the differential pressure at the intermediate roof within narrower tolerance limits during normal operation of the two-zone heat storage unit, the two-zone heat storage unit has a circulation pump (15) for flowing heat transfer medium through the at least one first equalization line (11'), a first equalization pump (16) for conveying heat transfer medium from the lower zone (5) into the upper zone (4) and a second equalization pump (17) for conveying heat transfer medium from the upper zone (4) into the lower zone (5).

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 invention refers to a control device (12) configured for control of a pump unit (10) or a hydronic system, the control device (12) comprising an electric interface (26) configured for connecting at least one sensor (T1, T2, T3) and at least one electric load (16, 24) with the control device (12), wherein the electric interface (26) is a three-pin connector, and the control device (12) includes a switching device (34) configured to selectively apply electric signals (V1, V2, V3) onto the three pins (28, 30, 32) of the connector allowing to selectively receive sensor signals from the at least one connected sensor (T1, T2, T3) or to supply a voltage (V2) to the at least one electric load (16, 24), and a pump unit and a hydronic system having such a control device.