582results about "Heating fuel" patented technology

The invention provides an underground heat supply system based on an air energy heat pump as a heat source and a remote monitoring method, and the system comprises a heat source dynamic tuning subsystem which carries out the dynamic parameter optimization processing of environment temperature and energy storage state data, and obtains an air energy heat pump operation instruction; first characteristic adjustment of air energy heat pump output is formed through an air energy heat pump operation instruction, and matching of the temperature of an energy storage water tank and an environment heat source is achieved. The underground hot air accurate adjusting subsystem obtains underground real-time temperature data, the underground real-time temperature data is subjected to spatial thermal field calculation processing to obtain air volume demand parameters, and dynamic balance between the air supply intensity and the underground thermal environment is formed; and the multi-stage cooperative control center subsystem performs three-stage logic verification processing on the signals of the air energy heat pump operation instruction and the fan frequency instruction to obtain an equipment regulation and control instruction set. The underground intelligent heat supply system of the air energy heat pump, which has the environment self-adaption capability, the dynamic balance capability of a thermal field and the remote monitoring characteristic, is constructed.

The invention provides a heat supply device of a photoelectric heating all-in-one machine, and belongs to the technical field of heat supply control. According to the device, the maximum power generation power of a photovoltaic panel is automatically tracked through the photovoltaic adaptation module, the photovoltaic power supply heating module is directly driven, the photovoltaic power supply heating module is always kept near the maximum power point, and the photovoltaic power generation heat transfer efficiency is improved; through feedback of the temperature transmitting module, the intelligent control module controls the photovoltaic adaptation module and the mains supply control module at the same time, photovoltaic direct drive and mains supply can be automatically matched to assist in automatic conversion of heating control for complementary heat supply, the intelligent control module has a temperature compensation control technology, and when the photovoltaic heat supply temperature is lower than the lower limit, the intelligent control module controls the intelligent control module to supply heat. Mains supply is automatically switched on for temperature compensation; meanwhile, the photovoltaic adaptation module and the photovoltaic power supply heating module are independent systems, the commercial power control module and the commercial power supply heating module are independent systems, and the two systems are independent of each other, have no interference to a power grid and are more stable and safer in operation. The intelligent heat supply mode switching method and device can improve the intelligence of heat supply mode switching.

The invention belongs to the technical field of building heat supply and intelligent power grid demand response control, and particularly relates to an intelligent power grid-oriented heat pump dynamic preheating and demand response control method, which comprises the following steps of: identifying building thermal characteristic parameters, introducing real-time environment variables such as external meteorological parameters and the like and thermal resistance and thermal capacity characteristics of a building, excessive or insufficient preheating caused by only relying on a timer is effectively avoided, and the balance of accurate heat supply and energy conservation is achieved; by adjusting the preheating starting time and the peak period temperature control strategy, the heat pump can dynamically respond according to the electricity price or the power grid demand signal, and the peak load is translated or reduced, so that the dual purposes of economic benefits, energy conservation and emission reduction are achieved; and formulating a peak period control strategy and formulating a non-peak period control strategy. According to the control method, actual thermal characteristics and external meteorological conditions of a building are taken as cores, load reduction in the peak period of a power grid and indoor thermal comfort are taken as double targets, and preheating time self-adaption, demand response flexibility and system operation reliability are achieved at the same time.

An on-demand water heater (12) includes a heat exchanger (25). Water is supplied to the water heater from a water source such as a well pump (16) or other source of water. The water supplied to the water heater is treated by at least one water conditioner 18. A plurality of electrical heating elements (26, 28, 30, 32) are supplied with electrical power from rechargeable battery pack (46). At least one circuit (48) is operative to control the delivery electrical power from the battery pack to the heating elements to provide for the delivery of heated water at a set temperature from the water heater. The battery pack of the water heater is recharged from an available supply of house current electrical power. The rechargeable battery pack of the exemplary water heater also provides an auxiliary source of electrical power for other devices in circumstances when electrical power from a usual supply source becomes unavailable.

The invention relates to the technical field of building energy conservation, in particular to an edge computing cooperative communication method for multiple heat pumps and a photovoltaic system, which comprises an edge server, a cloud server, multiple heat pumps, a variable frequency pump and an indoor and outdoor heat supply device, and is characterized in that the edge server realizes time synchronization of equipment through an OPC UA over TCSN protocol, a multi-level energy topology network is established, and the multi-level energy topology network is connected with the cloud server; in combination with physical energy flow and information flow, based on a building heat balance equation, an edge server controls a heat pump to work at an energy-saving operation point according to indoor and outdoor temperatures and user requirements, and the flow of a variable frequency pump is adjusted. In addition, multi-mode state sensing is achieved through the distributed sensor network, a layered self-adaptive control strategy is executed, photo-thermal collaborative optimization and heat pump group collaborative control are achieved, the system collaborative control precision is remarkably improved through the method, the time synchronization error is reduced by three orders of magnitude, and the system response speed reaches the millisecond level and is 10 times faster than that of a traditional system.

The invention discloses a multi-energy cooperative control method and system with a self-adaptive disturbance discrimination function, and relates to the technical field of energy cooperative control, and the method comprises the following steps: constructing a multi-band phase fingerprint sequence based on the instantaneous voltage response of a photovoltaic array, and forming an initial energy transition baseline through extracting microsecond phase deviation tracks in different bands; and based on the initial energy transition baseline, constructing time series dynamic gradient mapping, converting the phase deviation trajectory into continuous power gradient distribution, and identifying a potential acceleration fragment in the power gradient distribution. According to the method, a high-sensitivity energy identification mechanism is constructed, pre-judgment is carried out in advance before photovoltaic output sharply rises, and power of different frequency bands is guided to enter a layered energy storage path based on a high-risk window, so that energy deposition according to needs is realized, local thermal stress concentration is avoided, and structural damage and energy storage attenuation of a heat storage body are effectively prevented; the stability and safety of electric heating are improved, and the service life of heat storage materials is prolonged.

A heat pump system includes a heat pump and an auxiliary heat source. A heating coefficient of performance is determined for the heat pump based on ambient outdoor air temperatures, and the heat pump is operated to heat a process fluid an output temperature based on the heating coefficient of performance and a reference heating coefficient of performance. The auxiliary heat source can be operated to bring the process fluid to a target temperature for heating a load, with the target temperature being a function of the ambient outdoor air temperatures.

The application discloses a bathroom heater constant temperature control method, device, equipment, medium and program product, and relates to the technical field of smart home. The method comprises the following steps: acquiring environment data; in response to the fact that the biological body sensing data indicates that the environment where the bathroom heater is located does not contain a specified biological body, controlling the air outlet mode of the air outlet of the bathroom heater based on temperature data; and in response to the fact that the biological body sensing data indicates that the environment where the bathroom heater is located contains a specified biological body, controlling the air outlet of the bathroom heater to diffuse air in the diffusion air outlet mode. On the one hand, the air outlet mode of the air outlet of the bathroom heater is controlled based on the acquired temperature data, the air outlet mode of the air outlet of the bathroom heater is switched between the diffusion air outlet mode and the concentrated air outlet mode, the environment where the bathroom heater is located can quickly reach a constant temperature, and the working efficiency of the bathroom heater is improved. On the other hand, in the case that the environment where the bathroom heater is located contains a specified biological body, the air outlet mode of the air outlet of the bathroom heater is kept in the diffusion air outlet mode, and the performance utilization rate of the bathroom heater is improved.

The object of the invention is a mixing system (1) comprising at least a boiler (2) and a heat pump (3) through which technical fluids for room heating and / or for domestic water production circulate, and an associated method for managing and controlling the switching cycle (ON / OFF) of said heat pump (3) during domestic hot water (DHW) intake. The method comprises at least the following steps: during said domestic hot water (DHW) water intake, ensuring flow to the heat pump (3) at a flow rate mchHP at least adapted to avoid closing thereof, and ensuring a complete achievement of this DHW water intake.

The system for supplying heat to a building comprises, in addition to an outside air heat exchanger (11), a fan device (12) for conveying outside air through the outside air heat exchanger (11), a latent heat storage unit (13) with a closed tank (18) and a heat pump (15), a piping system (16) filled with a liquid working medium and a pumping device (17) for conveying the working medium through the piping system. The piping system (16), the pumping device (17), the outdoor air heat exchanger (11), the heat pump (15) and the latent heat storage unit (13) form a closed circuit for the working medium and are arranged such that the working medium flows through the outdoor air heat exchanger (11), the latent heat storage unit (19) and an evaporator heat exchanger (21) of the heat pump (15) in the closed circuit in this sequence before being returned to the outdoor air heat exchanger (11).

A collaborative optimization method for an Electric and Heating Networks (EHN) and a building user includes: establishing a coordinated optimization scheduling framework of the EHN and a building in a park; based on the coordinated optimization scheduling framework, constructing an optimal thermal power flow scheduling model of the EHN, and constructing a building model to simulate thermal characteristics and energy consumption of the building; based on the optimal thermal power flow scheduling model and the building model, taking the lowest operation cost of EHN and the lowest heat consumption of building user as a goal, constructing a collaborative optimization model of the EHN and the building user; outputting a collaborative optimization scheme of the optimal thermal power flow scheduling of the EHN and the heat consumption of the building user through the collaborative optimization model of the EHN and the building user.

One variation of a method includes, during a first time period preceding a predicted hot water consumption event within a building: triggering a heat pump arranged within a water heater to heat water toward a target supply temperature for water supplied to a building by the water heater; and, at the water heater, supplying water, proximal the target supply temperature, to the building during the hot water consumption event. This variation of the method also includes, during a predicted null hot water consumption window within the building: triggering the heat pump to maintain water stored in the water tank proximal a nominal temperature less than the target supply temperature; and, at the water heater, in response to detecting flow of water from the water heater, triggering an inline heater, arranged within the water heater, to heat water toward the target supply temperature.

The invention belongs to the technical field of energy storage systems, and relates to a waste space energy storage and solar energy coupling comprehensive energy supply system which comprises an underground reservoir, an overground reservoir, a pumped storage and power generation unit, a solar photovoltaic panel, a heat storage water tank, a refrigerating and heating unit, a power storage unit and an independent refrigerating unit. Electric energy generated by the solar photovoltaic panel and the pumped storage and power generation unit can be supplied to the heat pump and the user side, so that the heat pump can cooperate with the underground reservoir to supply heat and cold to the user side, meanwhile, hot water generated by the solar photovoltaic panel can supply heat and hot water to the user side, and the solar photovoltaic panel can cooperate with the independent refrigeration unit to supply cold to the user side. According to the system, multiple energy supply modes of heating, cooling, power supply and hot water supply are achieved while energy storage is achieved, the utilization efficiency of energy is improved, meanwhile, green power generated through power generation of the solar photovoltaic panel supplies power to all electric equipment in the system, and power production and marketing balance in the system is achieved.

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.

A thermal storage system that includes one or more thermal storage tanks having a tank body that defines a tank cavity configured to hold a tank thermal storage medium; a heat exchanger assembly disposed in the tank cavity configured to run a flow of working thermal storage medium through the one or more thermal storage tanks so that heat exchange occurs between the flow of working thermal storage medium and the tank thermal storage medium; one or more cables that extend to one or more rooms of the building; and one or more heat exchange elements disposed within the one or more rooms configured to receive a flow of the working thermal storage medium from the one or more cables so that heat exchange occurs between the flow of the working thermal storage medium and an environment of the one or more rooms of the building.

The invention discloses a control method and device of a ground source heat pump system, the ground source heat pump system, a storage medium and a computer program product, the ground source heat pump system comprises a water tank, a floor heating device, an indoor heat exchanger and a ground source heat pump unit, and the method comprises the steps that the energy supply priority of the ground source heat pump unit is determined according to the outdoor environment temperature, the ground source heat pump unit is controlled to supply energy to the water tank, the indoor heat exchanger and the floor heating device according to the energy supply priority; in the process, the heat supply distribution proportion of the ground source heat pump unit is determined according to the temperature of the water tank, and the ground source heat pump unit is controlled to supply heat to the water tank and the floor heating device according to the heat supply distribution proportion. According to the scheme, by dynamically adjusting the energy supply priority and the heat supply distribution proportion of the ground source heat pump unit, the problems of fixed control priority and control lag are solved, and the system energy efficiency is improved.

A manifold (364) includes selectable different internal flowpaths between one or more inlets (660, 670) and one or more outlets (655, 665, 676) of the manifold (364), each internal flowpath corresponding to a particular selected operating mode of a system, such as a water provisioning system. Flow sensors (680, 681, 682) are mounted on the manifold within the inlet(s) and the outlet(s), to provide flow signals indicative of a flow rate of a liquid passing through the respective inlet and outlet when the manifold (364) is operating in a particular selected operating mode of the system. The inlet flow and outlet flow signals are usable by a controller to learn a flow rate of the liquid passing through an outlet when a liquid of a particular flow rate passes through the inlet when the manifold is operating in the particular selected operating mode of the system so as to control a component of the system operating in the particular selected operating mode.

A heat pump and associated method for storing thermal energy, the heat pump comprising - at least a pair of thermal storage tanks, wherein at least one of said pair of thermal storage tanks is a high temperature tank and at least one another of said pair of thermal storage tanks is a low temperature tank, wherein each of the thermal storage tanks is configured for holding therein a thermal storage substance having a predetermined heat capacity; and - at least one refrigeration cycle for operation of a vapor compression cycle, wherein the high temperature tank and the low temperature tank are each thermally coupled to the refrigeration cycle and configured such that during operation of the vapor compression cycle heat is withdrawn from the thermal storage substance in the low temperature tank to the refrigeration cycle, and simultaneously heat is withdrawn from the at least one refrigeration cycle to the thermal storage substance in the high temperature tank.

The present invention belongs to the field of household appliance technology, and specifically relates to a control method for a heat pump water heater. The present invention aims to address the problem of existing heat pump water heaters being affected by the high-temperature water in the upper portion of the water tank, resulting in a high condenser temperature and poor heat exchange efficiency. The heat pump water heater of the present invention includes a first condenser and a second condenser arranged above and below the water tank. The refrigerant outlet of the first condenser is connected to the refrigerant inlet of the second condenser via a first refrigerant branch pipe, and the first refrigerant branch pipe is provided with a regulating valve. The refrigerant inlet of the second condenser is also connected to the refrigerant main pipe via a second refrigerant branch pipe, and the second refrigerant branch pipe is provided with an on-off valve. A controller is respectively connected to the regulating valve and the on-off valve, and is used to control the on-off valve to open in stratified heating mode. The regulating valve opening is reduced to 20-30 degrees, allowing the refrigerant in the refrigerant main pipe to enter the second condenser through the second refrigerant branch pipe, thereby achieving stratified heating of the water inside the water tank and improving heat exchange efficiency.

The present application relates to the field of heating and ventilation technology, and particularly relates to a control method of a heating system. The present application aims to solve the problems of high cost and high risk of refrigerant leakage existing in the current heat pump heating. For this purpose, the heating system of the present application comprises a heat pump cycle and a water cycle, the heat pump cycle comprises a variable displacement compressor, a tubular heat exchanger, a throttling device and an evaporator connected through a refrigerant pipeline, the water cycle comprises an indoor radiator and the tubular heat exchanger connected through a heat exchange pipeline, the refrigerant in the heat pump cycle and the circulating water in the water cycle exchange heat in the tubular heat exchanger, the variable displacement compressor has two compression cylinders, and the control method comprises: acquiring an outdoor environment temperature; determining a working mode of the variable displacement compressor according to a temperature interval in which the outdoor environment temperature is located; and controlling the variable displacement compressor to operate based on the working mode. The present application has good heating effect, low cost, low risk of leakage and good heat pump heating effect.

The invention relates to an air conditioning system (10) that provides simultaneous domestic hot water heating and defrosting operation support to a heat pump (40).

A heating module (1) is disclosed, comprising: a heat pump (2) configured to extract heat from a reservoir (6) by expending technical work and supplying it as usable heat to a heating circuit (8), and an electric heater (4) configured to supply usable heat to the heating circuit (8). The heating module (1) is configured such that it can be integrated into or connected to the heating circuit (8). Furthermore, a vehicle, a household appliance, and a building heating system incorporating the heating module (1) are disclosed.

The installation (21) comprises: a primary refrigerant circuit (22), including: - an outdoor unit (23) comprising at least: a first compressor (34), a first heat exchanger (25) configured to exchange heat between a first refrigerant and the outside air, and at least one first expansion valve (26), - an indoor unit (29) comprising at least one second heat exchanger (30) configured to exchange heat between the first refrigerant and the inside air, a secondary refrigerant circuit (32) independent of the primary circuit (22), intended to be installed inside the dwelling and comprising: - a water heater comprising a tank (33), a condenser (35), a second compressor (34) and at least one second expansion valve (36),the primary circuit (22) comprising at least one third heat exchanger (37) allowing the primary circuit (22) and the secondary circuit (32) to be thermally coupled directly or indirectly. Figure from the abstract: Figure 2,

Installation of a heat pump in a building, the installation comprising: a heat pump operated with a flammable refrigerant (11), wherein the heat pump is located in a casing (9) and the casing is located in a building, in the casing (9) of the heat pump an internal heat exchanger (1) which is connected to the flammable refrigerant (11) on one side and to the heating circuit water (10) on the other side, in the casing (9) of the heat pump a refrigerant / air separator (2) which is arranged downstream in the heating circuit behind the internal heat exchanger (1), in the casing (9) of the heat pump a safety valve (4) which is arranged downstream in the heating circuit behind the refrigerant / air separator (2), a heating circuit pump (5) which is arranged downstream in the heating circuit behind the safety valve (4), at least one heating consumer (8) with a hot water supply and a hot water return,A further safety valve (6) is located between the hot water inlet and the heating circuit pump (5), and a water expansion tank (7) is located between the hot water return and the internal heat exchanger (1), wherein the safety valve (4) in the heat pump housing (9) has a lower opening pressure than the safety valve (6) between the heating circuit pump (5) and the heat consumer (8), and the difference in opening pressure is set to be greater than the pressure difference due to the geodetic height of the water column between the two safety valves (4, 6).

The present invention relates to a hot water supply tank. A hot water supply tank, according to an embodiment of the present invention, comprises: a storage part which accommodates a fluid therein; an internal water outlet pipe through which a fluid flows from the storage part toward a heat pump; an internal water supply pipe through which the fluid flows from the heat pump toward the storage part; and an internal pipe which is disposed inside the storage part, wherein the internal pipe includes: a connection pipe which is connected to the internal water supply pipe, and at least a part of which is flexible; and a discharge pipe which has one end connected to the connection pipe and extending long, wherein a pipe through hole passing through the discharge pipe may be formed at the other end of the discharge pipe. Various other embodiments are possible.

A method (200) for monitoring a check valve condition in a modular fluid-fluid heat transfer arrangement (100) which comprises a plurality of heat pump modules (130a, 130b) and, for each of the heat pump modules (130a, 130b), a check valve (140a, 140b) arranged in a fluid flow path of the heat pump module (130a, 130b) and configured to selectively close the fluid flow path, the method (200) comprising: (a) providing a close valve signal to the check valve (140a, 140b); (b) determining a data set pertaining to a fluid temperature of the fluid flow path; (c) comparing the data set with a reference data set; and (d) if a difference between the data set and the reference data set exceeds a threshold: transmitting (S201) an alarm signal for indicating a malfunctioning of said check valve (140a, 140b). The disclosure further relates to a modular fluid-fluid heat transfer arrangement (100).

Domestic hot water system comprising a cold water inlet 302 receiving a mains supply and a hot water outlet 304, a thermal store 342 for hot water, a heat exchanger 308 connected to the mains supply t

Thermodynamic water heater and water heating method implementing it The invention relates to a thermodynamic water heater (1) comprising a heating device (2) and a tank (3) with a container (3') for the water to be heated / heated, the tank (3) also comprising a condenser circuit (4) supplied by the heating device (2) forming a closed loop of heat transfer fluid circulation, and with an upper inlet end (4') and a lower outlet end (4'').A water heater characterized in that said condenser circuit (4) comprises a main hot heat transfer fluid supply inlet (5) and another secondary hot heat transfer fluid supply inlet (51), said secondary supply inlet (51) corresponding to an intermediate connection point (PR) of said condenser circuit (4), located between its upper inlet end (4') and its lower outlet end (4'') and defining two portions of the condenser circuit (4) corresponding respectively to two superimposed volumetric zones (Z1 and Z2) within the internal volume of the container (3'), and in that each of the hot heat transfer fluid supply lines (6, 61) connecting the heating device (2) to the supply inlets (5, 51) comprises a control valve (7, 71). Figure to be published with the abbreviation: Fig. 1.

The application provides a PTC heating circuit and a heating method, which comprises the following steps: connecting the first end of the first-stage switching circuit with the L-phase line of an external AC power supply; connecting the second end of the first-stage switching circuit with the first end of the second-stage switching circuit; connecting the third end of the first-stage switching circuit with an external DC power supply; connecting the fourth end of the first-stage switching circuit with an external controller; the first-stage switching circuit comprises a relay; connecting the second end of the second-stage switching circuit with the first end of a PTC heater; connecting the third end of the second-stage switching circuit with the external DC power supply; connecting the fourth end of the second-stage switching circuit with the external controller; and connecting the second end of the PTC heater with the N-phase line of the external AC power supply. By implementing the application, the relay is not directly subjected to the large current impact of the ceramic PTC heater when it is first turned on, so that the relay type does not need to be increased, and the cost increase caused by the relay is avoided.