54 results about "Ground-coupled heat exchanger" patented technology

A device for testing heat exchanging ability of burying heat exchanger consists of geothermal pump airconditioning set, burying heat exchanging heat absorption system which is an independent water circulation loop formed by pump, water collector, valve pipe etc; burying heat exchanging heat release system which is an independent water circulation loop formed by pump, water collector, valve pipe, etc; and test system formed by thermometer and turbine flowmeter which are set separately in abovesaid heat release and heat absorption systems.

The invention discloses an integral air source and ground source composite heat pump device. During mixed use of a heat pump, air and soil serve as cold and heat sources for refrigerating/heating. The heat pump mainly comprises a compressor, a four-way valve, an outdoor heat exchanger, a fan, a circulating water pump, a ground source heat exchanger, a throttling mechanism, a one-way valve, a reservoir and an indoor heat exchanger, wherein the outdoor heat exchanger consists of a refrigerant pipe, a water pipe and fins; and the water pipe is arranged on the inner side of the refrigerant pipe, so that circulating water exchanges heat with refrigerants, and the refrigerant pipe comprising the water pipe passes through the fins to realize heat exchange between the refrigerants and the air. The device is a heat pump system, low-energy-consumption environment-friendly shallow soil is used as a cold and heat source, a feasible scheme is provided for solving the problem of hot soil stack caused by long-term use of a ground source heat pump, and the heat pump device has a simple structure, low cost, reliable performance and a high energy efficiency ratio.

The invention discloses a ground source heat pump air-conditioning system and a fresh air processing method thereof. The ground source heat pump air-conditioning system comprises a ground source heat pump unit, a ground source heat exchanger, a fresh air unit, a radiant heating ground coil and a cold radiant ceiling device. One outlet end of the ground source heat exchanger is connected to the cold radiant ceiling device controlled by a valve opened in summer and closed in winter, while the other outlet end is connected to a first heat calorie exchanging device. Both the outlet ends are connected to an outer heat exchanger of the ground source heat pump unit. An outlet of the outer heat exchanger is connected to an inlet of the ground source heat exchanger through a first circulating pump. An outlet end of the inner heat exchanger of the ground source heat pump unit is divided into two paths, wherein one path is connected to the radiant heating ground coil controlled by a valve opened in summer and closed in winter, and the other path is connected to a second heat calorie exchanging device. Both the paths are connected to an inner heat exchanger of the ground source heat pump unit. The ground source heat pump air-conditioning system has obvious energy-saving effect and stable and reliable operation of the system, is sanitary, does not pollute the underground water and has wide application prospect in the regions which are rich in underground water and are cold in winter and hot in summer.

The invention provides a multi-connected type air conditioner system and a defrosting control method of the system. The air conditioner system comprises a refrigerant circulation loop and a controller. The refrigerant circulation loop is formed by connecting at least one compressor, a four-way valve, an outdoor heat exchanger set and an indoor unit through a refrigerant pipe; the controller controls the system to run; the outdoor heat exchanger set comprises at least two outdoor module heat exchangers which are connected in parallel and auxiliary heat exchangers connected with the outdoor module heat exchangers. According to the multi-connected type air conditioner system, the outdoor heat exchanger set comprises two or more module heat exchangers, and the auxiliary heat exchangers are added; when a certain outdoor module heat exchanger meets the defrosting condition and needs to be defrosted, corresponding control valves and throttling components are controlled to be correspondingly linked through certain control logics, and therefore the defrosting aim of the outdoor module heat exchangers is achieved. The air conditioner system carries out defrosting and heating at the same time; in the modular defrosting period of the outdoor module heat exchangers, it can be ensured that hot air can be blown out of the indoor side, and the use effect of a user is ensured.

The invention provides a ground heat exchanger used for a ground source heat pump air conditioning system. According to structural factors of pipes themselves and interaction factors between the pipes and geothermal resources and through structural improvement and optimization, the heat exchange performance of the ground heat exchanger is enhanced, and the heat exchange efficiency between water flows in the pipes of the ground heat exchanger and the geothermal resources is increased. The ground heat exchanger is used in the ground source heat pump air conditioning system, the service life of the ground heat exchanger can be prolonged, the energy efficiency of the ground source heat pump air conditioning system is increased, energy consumption and the fault rate of the system are lowered, and therefore the problem that an existing ground heat exchanger structure is prone to causing low heat exchange efficiency, high fault rate, low energy efficiency, non-obvious energy-saving benefits and the like of the ground source heat pump air conditioning system is solved.

This invention consists of a novel heat exchanger design and a novel means of its installation for Ground-Source Heat Pump Systems' ground heat gain/rejection loops. This improvement reduces the installation cost of such systems by method of placement and exchanger design. The Heat exchanger is a metal pipe, 20 to 40 feet long, approximately 1.25 to 2 inch diameter, containing an internal polymeric tube, installed in the pipe concentrically to carry the heat exchange medium from or to the bottom of the pipe; the pipe being inserted into the ground by means of a ballistic launcher or direct-push machine or by manual means. This system reduces the installation costs. The current art calls for extensive trenching or drilling, and yields high costs and detrimental impacts on property. This invention reduces surface impact areas. The only trenching connects the building to the tops of the Heat exchangers.

A heat is taken from a photovoltaic panel (1) using air that flows through the photovoltaic panel (1) unit with an air cooler (2). The unit has an air intake opening (3) and an outtake vent (4) and the air flow is enforced by a natural draft of a chimney (5), to which the photovoltaic panel (1) unit is connected to. At least a part of the chimney (5) is exposed to solar radiation. Outtake vents (4) of several photovoltaic panel (1) units can lead to one chimney (5), preferably through thermal collectors (6) and piping. The air in the chimney is warmed up by solar radiation, the air ascends towards the chimney (5) mouth and the chimney (5) natural draft created in this way enforces air flow within the photovoltaic panel (1) unit. Even the air cooler (2) of the sucked air can form part of the system—preferably in the form of a ground-coupled heat exchanger (9). The chimney (5) can be equipped with heat-absorbing surface and it can also have a supporting wind device transforming wind energy into a natural draft within the chimney (5).

The invention discloses an evaporation concentration system combining a vapor compressor and a high-temperature heat pump, used for realizing the desalting or concentrated crystallization of a solution. The evaporation concentration system is structurally characterized in that an outlet of a liquid supply tank is connected to a solution side inlet of a steam generator through a first stop valve and a float ball valve; a steam outlet of the steam generator is connected to inlets of the vapor compressor and an evaporative condenser through a second stop valve; the outlet of the evaporative condenser is connected to a first coil heat exchanger and a fresh water tank; a solution outlet of the steam generator is connected to a concentrated solution tank through a third stop valve; a solution storage tank is connected to the fresh water tank through a fourth stop valve; a high-temperature water side of a heat pump set is connected with a second coil heat exchanger, a low-temperature water side of the heat pump set is respectively connected with third and fourth coil heat exchangers and a solution heat exchanger in parallel; after being compressed, pressurized and warmed up, steam enters into the evaporative condenser so as to form fresh water; and the solution in the steam generator is evaporated and concentrated into concentrated solution or crystals. The evaporation concentration system is used for recycling the heat of the concentrated solution and the condensed water in the system by utilizing the high-temperature heat pump, so as to achieve the purpose of saving energy.

A geoexchange system is provided which includes a ground source heat exchanger positioned in the ground and a distribution system coupled to the ground source heat exchanger to circulate water through the ground source heat exchanger during operation. The distribution system may include a supply line, a return line and a circulation pump to circulate water through the internal fluid cavity of the ground source heat exchanger via the supply and return lines. The distribution system may further include a purge valve to release gas from the distribution system and a fill circuit that is configured to automatically replenish the internal fluid cavity of the ground source heat exchanger with water upon leakage of water from the ground source heat exchanger or conversion of water from the ground source heat exchanger to gas. Other geoexchange systems and related methods are also provided.

A geoexchange system is provided which includes a ground source heat exchanger positioned in the ground and a distribution system coupled to the ground source heat exchanger to circulate water through the ground source heat exchanger during operation. The distribution system may include a supply line, a return line and a circulation pump to circulate water through the internal fluid cavity of the ground source heat exchanger via the supply and return lines. The distribution system may further include a purge valve to release gas from the distribution system and a fill circuit that is configured to automatically replenish the internal fluid cavity of the ground source heat exchanger with water upon leakage of water from the ground source heat exchanger or conversion of water from the ground source heat exchanger to gas. Other geoexchange systems and related methods are also provided.

The invention provides a subway station ground source heat pump air conditioning system which comprises a ground source heat pump set, a ground heat exchanger, water storage tanks, a plurality of subway station air conditioning terminals and a plurality of surrounding building air conditioning terminals. The ground source heat pump set comprises a ground source side heat exchanger and a load side heat exchanger. The ground heat exchanger is connected with the ground source side heat exchanger. The water storage tanks and the subway station air conditioning terminals are all connected with the load side heat exchanger through pipelines, and the water storage tanks are connected with the subway station air conditioning terminals in parallel. The surrounding building air conditioning terminals are connected with the water storage tanks through pipelines. The subway station ground source heat pump air conditioning system can satisfy the requirement for an air conditioning load of a subway station, and has the advantages of being low in noise, good in economy, wide in range of use, efficient and energy saving, and stable in running.

An underground heat exchange system is provided to reduce energy consumption for circulation of a heat transfer medium and reduce construction, management, and maintenance costs. The underground heat exchange system includes: a double-pipe heat exchanger that is buried underground to convert a heat transfer medium into a usable form; a medium collector that collects the heat transfer medium that has dispersed its heat via a heat consumption area to circulate the same to the ground heat exchanger; and a plurality of circulation loops. The medium collector includes first and second reservoirs that are arranged in two tiers: upper and lower, spaced apart from each other, an upstream pump is provided in a first circulation loop between the first and second reservoirs, and the second reservoir is placed higher than the first reservoir. The ground heat exchanger may enhance heat exchange efficiency by increasing the contact area and time between the ground and the heat transfer medium.

The invention relates to a jet type LNG vaporization system utilizing geothermal energy. The jet type LNG vaporization system comprises a vaporizer and a ground heat exchanger. A vaporization tank is a main body of the vaporizer and is divided into a heat exchange chamber and a non-heat-exchange chamber. The non-heat-exchange chamber is divided into a liquid chamber and a steam chamber. The liquid chamber is provided with an LNG inlet, and the steam chamber is provided with an NG outlet. A plurality of heat exchange pipes are arranged in the heat exchange chamber. The inlet end of each heat exchange pipe communicates with the liquid chamber, and the outlet end of each heat exchange pipe communicates with the steam chamber. The ground heat exchanger is buried underground, an inlet of the ground heat exchanger communicates with the bottom of the heat exchange chamber through a pipeline, and an outlet of the ground heat exchanger is sequentially connected with a compressor, a temporary storage box and a steam nozzle through pipelines. The outlet end of the steam nozzle is arranged at the top in the heat exchange chamber and points at the heat exchange pipes, and the ground heat exchanger is filled with heat exchange media. According to the system, geothermal energy and electric energy are combined, energy saving and environment friendliness are achieved, heat transfer is achieved through phase changes of the heat exchange media, and the heat transfer efficiency is high.

The invention discloses a micro distributed combined cooling and heating power device combining a ground heat exchanger. The micro distributed combined cooling and heating power device combining the ground heat exchanger comprises a fuel gas internal combustion generating set, a double-effect lithium bromide absorption heat pump system, a heat consumer water supply and return system, the ground heat exchanger, an air source heat exchanger and a water-water heat exchanger. The exhaust heat of the fuel gas internal combustion generating set drives the double-effect lithium bromide absorption heat pump system; the double-effect lithium bromide absorption heat pump system comprises a high pressure generator, a low pressure generator, an evaporator, a condenser, an absorber and a heat exchangercircularly connected sequentially; the heat consumer water supply and return system is divided into two paths; one path is connected with the condenser to a water supply pipeline; the other path is connected with the evaporator to the water supply pipeline; the water supply pipeline is divided into two paths through an outlet of the evaporator; one path is connected with the ground heat exchangerand the absorber; the other path is connected with the air source heat exchanger; and the two paths are switched to operate so as to form a loop with the evaporator. According to the micro distributed combined cooling and heating power device combining the ground heat exchanger provided by the invention, the comprehensive utilization of a geothermal source and an air source is realized, the utilization efficiency of the absorption heat pump in winter is improved, and the system comprehensive performance is improved.

Horizontal ground-coupled heat exchanger for geothermal systems is proposed. The exchanger includes sub-surface formation of not expensive special structure heat conductive stratum around conduit loops. Analytical and finite element modeling allowed estimating the new structure efficiency. The proposed decision permits to increase by 2-3 times the transmitted heat power of the exchanger and correspondently to reduce the required pipe length and land area. The underground loop must be sized to meet the peak thermal power load. The proposed exchanger structure may fill simply this requirement, because at relatively short-term operation the efficiency of the proposed structure is even higher and reaches increasing by 2.5-4 times in dependence on climate zone.

The invention provides a combined type heat pump and heat source system and a method for heat exchanging through a power plant cooling system. The system comprises a power plant hyperbola reinforced concrete cooling tower, a heat exchanger buried in the side wall of the reinforced concrete cooling tower, a cooling tower colleting tank, a collecting tank heat exchanger, a ground heat exchanger, a pipe-diameter-enlarged cooling water pipeline, a cooling water pipe S-shaped pipeline heat exchanger, a heat pump unit, a system controller, a switch valve A1, a switch valve A2, a switch valve B1, a switch valve B2, a switch valve C1, a switch valve C2, a buried pipe manifold, a buried pipe water collector and a heat exchange system circulation pump. According to the method for heat exchanging through the power plant cooling system, waste heat of cooling water of a power plant is effectively utilized, and operation efficiency of the heat pump unit and the power plant cooling tower can be improved.

The invention relates to the technical field of air conditioners, and provides a compound energy air handling unit. The compound energy air handling unit comprises an air conditioner cabinet body, andfurther comprises a ground source heat exchanger, a compressor, a circulating pump and a compound heat exchanger which are arranged on the exterior of the air conditioner cabinet body, wherein a gaschannel is formed in the air conditioner body, and comprises an air inlet, an air outlet and an air return port, a first heat exchanger, a second heat exchanger, a third heat exchanger and a first draught fan are sequentially arranged in the gas channel along the air flowing direction, one end of the circulating pump is connected with the ground source heat exchanger, the other end of the circulating pump is connected with the first heat exchanger and the compound heat exchanger which are connected in parallel, one end of the compressor is connected with the second heat exchanger, and the other end of the compressor is connected with the third heat exchanger and the compound heat exchanger which are connected in parallel. The provided compound energy air handling unit can reduce energy consumption in the reheating process of a common air conditioning system air handling unit, fully uses natural energy to reduce the energy consumption according to energy grades, and achieves efficient running all year around.

The invention relates to a carbon dioxide air conditioning system for a building and the building with the air conditioning system. The carbon dioxide air conditioning system for the building comprises an indoor heat exchanger, carbon dioxide compressors, ground source heat exchangers and a reversing device. The indoor heat exchanger, the carbon dioxide compressors and the ground source heat exchangers are connected through a carbon dioxide circulation pipeline to form a circulation loop. The reversing device is arranged in the carbon dioxide circulation pipeline. The indoor heat exchanger is arranged in a building floor and/or a wall. The ground source heat exchangers are arranged underground. The carbon dioxide air conditioning system and the building have the beneficial effects that heat of geothermy or earth cooling is circulated to the building through carbon dioxide, and a heat source or a cold source is provided in a heat radiation exchange manner; cost is low, and energy consumption is low; and no pollution exists, and thermal homogeneity is good. The space of the building can be saved, indoor temperature is uniformly distributed, the indoor temperature fluctuation is small, and no blowing feeling or noise exists; and human body comfort and energy-saving benefits are better than those of a conventional air conditioner.

A heat dissipation device of a power module comprises a recoverer, a fluorine pipeline, a first expansion valve, a second expansion valve, a fluorine pipeline expansion valve, a first one-way valve, a second one-way valve and a module heat exchanger. A frequency conversion air conditioner comprises a compressor, a four-way valve, the recoverer, a heat exchanger, an outdoor unit and the fluorine pipeline expansion valve arranged on the fluorine pipeline between the heat exchanger and the outdoor unit. The frequency conversion air conditioner is characterized by further comprising the first expansion valve, the second expansion valve, the fluorine pipeline expansion valve, the first one-way valve, the second one-way valve and the module heat exchanger. The heat dissipation device of the power module can keep the work environment, such as high temperature preventing and moisture condensation preventing, of the power module during air conditioner refrigerating or heating. According to the frequency conversion air conditioner, the power module is located at the environment suitable for working of the frequency conversion air conditioner in winter or summer; and normal work of the compressor is ensured, and control effectiveness is ensured.

The invention relates to a heat pump device with a freezing pipe as a ground heat exchanger so as to provide stable heat sources and cold sources for the heat pump. During running in winter and summer, the heat pump device can reach the optimal heat exchange effect by changing the direction of water flow in the ground heat exchanger. The final heat source or cold source of the heat pump is soil and groundwater; the water outlet end of the heat pump is connected with a user; the heat pump device provides heat sources for heating and bathing in winter and provides cold sources for air conditioners in summer.

The invention discloses a ground source heat pump incubation system. The system includes a ground heat exchanger. A circulation pipeline is connected to the ground heat exchanger. An evaporator is connected in series with the circulation pipeline. The evaporator is connected in series with a compressor, a condenser and an expansion valve to form a ground source heat pump hot water unit. A hot water storage tank is connected to the condenser. The hot water storage tank is connected to a heating device of an incubation machine through a pipeline. The system has the advantages of simple, convenient control and good energy regulation and control and energy saving effect, and so the energy utilization efficiency is improved and the energy waste is reduced.