A virtual power plant system using a heat conversion device includes a plurality of distributed energy resources connected to a virtual power plant; a virtual power plant output adjustment device connected to the virtual power plant and including a heat conversion device that receives power generated from the plurality of distributed energy resources and converts the power into thermal energy, a virtual power plant management device configured to conduct a bidding by predicting an expected power generation amount of the plurality of distributed energy resources, analyze output variation and error of the virtual power plant due to an output variation of the plurality of distributed energy resources, and stabilize an output variation of the virtual power plant by controlling a power consumption amount of the virtual power plant output adjustment device based on the analysis result.

A method for controlling a district thermal energy distribution system is presented. The method comprises: determining whether a local pressure difference between a feed line (111) and a return line (112) of a distribution grid (110) is below a predetermined threshold; upon the local pressure difference is determined to be below the predetermined threshold, generating a control signal comprising information instructing a local distribution system (150) to reduce outtake of heat or cold from the distribution grid (110); sending the control signal to a local control unit (140) of the local distribution system (150); and reducing, in response to the control signal, the outtake of heat or cold of the local distribution system (150) from the distribution grid (110). The distribution grid (110) may be a district heating grid or a district cooling grid. Also, a control server and a district thermal energy distribution system is presented.

A cold water intake pipe 4 and a hot water extraction pipe 5 that communicate with multiple spiral tubes 101 and a steam supplying pipe 2 and a condensate discharge pipe 3 that communicate with a shell are connected to a corrugated spiral tube type heat exchanger 1. Between the cold water intake pipe 4 and multiple spiral tubes 101, communication paths 46 that communicate between the cold water intake pipe 4 and some multiple spiral tubes 101a are provided, and a valve 44 is provided to communicate between the cold water intake pipe 4 and the other multiple spiral tubes 101b when the force acting from the cold water intake pipe 4 becomes larger than the force acting from the other multiple spiral tubes 101b and to block the cold water intake pipe 4 from the other multiple spiral tubes 101b when the force acting from the cold water intake pipe 4 becomes smaller than the force acting from the other multiple spiral tubes 101b.

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.

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.

A heat pump assembly (100) is presented. The heat pump assembly (100) comprises a heat pump (110) having a primary side inlet (122) and a primary side outlet (124); a primary side inlet valve assembly (126) comprising: a primary side inlet connection (126a) connected to the primary side inlet (122), a primary side inlet valve first conduit connection (126b) configured to be connected to a first conduit (12) of a thermal energy grid (10), and a primary side inlet valve second conduit connection (126c) configured to be connected to a second conduit (14) of the thermal energy grid (10); a first conduit temperature determining device (105a) configured to measure a local temperature, t.sub.1, of heat transfer liquid of the first conduit (12); a second conduit temperature determining device (105b) configured to measure a local temperature, t.sub.2, of heat transfer liquid of the second conduit (14); and a controller (108). The controller is configured to: receive hand t.sub.2 from the first and second conduit temperature determining devices (105a; 105b), receive information pertaining to whether the heat pump (110) is a heating mode heat pump or a cooling mode heat pump. The controller is configured to upon the heat pump (110) is the heating mode heat pump and upon t.sub.2>t.sub.1 set the primary side inlet valve assembly (126) to fluidly connect the primary side inlet valve first conduit connection (126b) and the primary side inlet connection (126a), primary side inlet valve assembly (126) to fluidly connect the primary side inlet valve or upon the heat pump (110) is the heating mode heat pump and upon t.sub.1>t.sub.2, set the second conduit connection (126c) and the primary side inlet connection (126a). The controller is configured to upon the heat pump (110) is the cooling mode heat pump and upon t.sub.1>t.sub.2, set the primary side inlet valve assembly (126) to fluidly connect the primary side inlet valve second conduit connection (126c) and the primary side inlet connection (126a), or upon the heat pump (110) is the cooling mode heat pump and upon t.sub.2>t.sub.1, set the primary side inlet valve assembly (126) to fluidly connect the primary side inlet valve first conduit connection (126b) and the primary side inlet connection (126a).

An induction-displacement neutral wall air terminal unit includes a housing defining a supply airflow path, a connected return airflow path, and a heating airflow path separated from the supply and return airflow paths by at least one interior wall. The unit also includes a plurality of induction-type nozzles located within the supply airflow path, that are deliver a ventilation air flow stream into the supply air flow path. The nozzles induce a return air flow stream through the return air flow path that mixes with the ventilation air flow stream to form a supply air flow stream delivered to a supply air outlet. A heating element is disposed within the heating airflow path to heat air within the heating air flow path. A plurality of fans may be placed within the heating airflow path to increase the overall heating capacity of the unit.

A conditioning or heating plant and a process of controlling the plant, wherein plant comprises at least one circuit for distributing a carrier fluid, having a delivery line, a return line, and a plurality of channels directly or indirectly connected to the delivery line and return line and configured for supplying respective environments to be conditioned and/or heated, at least one heat treatment central group placed on the circuit. The plant has, for each of the channels, at least one respective heat exchange unit and at least one flow-rate regulator.

A conditioning or heating plant and a process of controlling the plant, wherein plant comprises at least one circuit for distributing a carrier fluid, having a delivery line, a return line, and a plurality of channels directly or indirectly connected to the delivery line and return line and configured for supplying respective environments to be conditioned and/or heated, at least one heat treatment central group placed on the circuit. The plant has, for each of the channels, at least one respective heat exchange unit and at least one flow-rate regulator.

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.