Patent•
Ground source heat pump coupling water cool storage air-conditioning system based on independent temperature and humidity control
13 Mar 2013-
TL;DR: In this paper, a ground source heat pump coupling water cool storage air-conditioning system based on independent temperature and humidity control is proposed, which can save energy, reduce emission, save power, and reduce operating cost.
Abstract: The invention relates to a ground source heat pump coupling water cool storage air-conditioning system based on independent temperature and humidity control The system comprises a temperature control system and a humidity control system, for respectively controlling indoor temperature and humidity, wherein the humidity control system adopts an independent solution humidifying type fresh air handling unit to process outdoor fresh air, and introducing the processed fresh air into inside of the room; and the temperature control system comprises an air conditioning cool heat source and an air conditioning terminal Combined with a fire pool, accumulation of cold is processed at the low-load power price time intervals at night, which can clip the peak and fill the valley to balance the network load, and reduce the installed power of the equipment Meanwhile, users can enjoy preferential policy of electricity price, which saves power and energy, and has excellent social benefits and economic benefits The system can save energy, reduce emission, save power, and reduce operating cost
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Patent•
27 Jan 2015TL;DR: When a heat pump air-warming operation is performed by a heat source, a control unit of an air conditioning system switches from the heat pump operation to a separate heat source air-warming operation as mentioned in this paper.
Abstract: When a heat pump air-warming operation is being performed in which indoor air-warming is performed by a heat pump section (60), and when a first switching condition is met, which is that an outside air temperature reaches a first switching outside air temperature and an air-warming capability of the heat pump section reaches an upper limit, a control unit (8) of an air conditioning system (1) switches from the heat pump air-warming operation to a separate heat source air-warming operation in which indoor air-warming is performed by a separate heat source section (70)
13 citations
Patent•
11 Dec 2013
TL;DR: In this paper, a composite cold and heat source coupled water-cold storage air conditioning system based on independent temperature and humidity control and an application method thereof is proposed to save energy, reducing emissions, saving electricity and reducing the operating cost.
Abstract: The invention relates to a conventional composite cold and heat source coupled water-cold-storage air conditioning system based on independent temperature and humidity control and an application method thereof. The air conditioning system comprises a temperature control system and a humidity control system which are respectively used for controlling indoor temperature and humidity, wherein the humidity control system treats outdoor fresh air by adopting an independent solution humidifying type fresh air unit and supplies treated fresh air to a room; and the temperature control system comprises air conditioning cold and heat sources and an air conditioning terminal. According to the air conditioning system, the integrated operating energy efficiency of the air conditioning system is increased greatly, the characteristic that the refrigeration energy efficiency of an air cooling/heating pump increases along with the decrease of outdoor dry bulb temperature is utilized, a fire water tank is combined to carry out cold accumulation by using a night-time low-electricity-price time period, so that the grid load is balanced through load shifting, and the installed power of equipment is lowered; and in transition seasons, free cold supplying is realized in two manners of preparing frozen water by using a cooling tower and directly supplying cold by using outdoor low-enthalpy fully-fresh air, so that the cold source open time of an air conditioner is shortened. Therefore, the aims of saving energy, reducing emissions, saving electricity and reducing the operating cost are realized.
5 citations
Patent•
29 Jul 2015
TL;DR: In this paper, an electric-energy-friendly-based air conditioner load side active demand strategy was proposed to solve the contradiction between a distributed type air conditioning system energy saving technology and the quality of the electric energy of the power grid.
Abstract: The invention discloses an electric-energy-friendly-based air conditioner load side active demand strategy A Z-shaped low-voltage traversing and harmonic prevention circuit is designed on a direct current bus side between the power supply side and the load side; when a nonlinear load group is started under a variable frequency, the influence of sudden current change on a power grid is buffered; by arrangement of power grid monitoring, under severe low-voltage traversing and other emergency power grid faults of the power grid, the power supplying on the power grid side can be cut off immediately; a hardware interlocking linkage circuit starts an energy storage power supply for supplying power to a direct current bus; by DC-AC inversion, a load is powered to work; by combination of load forecasting, battery energy storage and peak load shifting management are combined, a bidirectional charging and discharging circuit between the direct current bus and the energy storage battery stores energy by fully using electric energy in the power consumption valley period and releases the stored energy in the power consumption peak period, so that load shifting of part of the load is realized, and normal operation of the load of an air conditioner is guaranteed According to the electric-energy-friendly-based air conditioner load side active demand strategy, the problem of the contradiction between a distributed type air conditioner system energy saving technology and the quality of the electric energy of the power grid is effectively solved
5 citations
Patent•
07 Oct 2015
TL;DR: In this paper, the authors proposed an air conditioning system for coupling ground source heat pumps with step tariff energy storage equipment, which can reduce the running cost and energy consumption of the system.
Abstract: The invention relates to an air conditioning system for coupling buried pipe ground source heat pumps with step tariff energy storage equipment, and belongs to the heating and ventilation air conditioning technology in the field of new energy The system comprises a buried pipe system, ground source heat pump hosts, an energy storage water pool or water tank with a heat preservation function, a heat exchanger, end user equipment, a heat source side circulating pump, an energy storage water pump, an energy release water pump, an end side circulating pipe and six changeover valves The buried pipe system is connected with one side of the ground source heat pump hosts, and the heat source side circulating pump is connected to main water supply pipes of the heat pump hosts One side of the energy storage water pool is connected with the heat pump hosts, and the other side of the energy storage water pool is connected with the heat exchanger The energy storage water pump is located on a pipeline among the heat pump hosts and the energy storage water pool The water release water pump is located on a pipeline between the energy storage water pool and the heat exchanger The heat exchanger is located between the energy storage water pool and an end user The end side circulating pump is located on a water return main pipe of the end user The six changeover valves are arranged on switchover pipelines of the whole system According to the system the running cost and energy consumption of the air conditioning system can be effectively lowered
2 citations
Patent•
27 Jun 2017
TL;DR: In this paper, a cold supply system for a water cold storage independent temperature and humidity control area is presented, which is composed of an air return-water heat exchanger, an air supply water heat exchange, a fresh air system, an independent temperature control system and a radiation type tail end.
Abstract: The invention discloses a cold supply system for a water cold storage independent temperature and humidity control area. The cold supply system is composed of a cold source system, a water cold storage system, a fresh air system, an independent temperature control system and the like. A water cooling unit system is composed of a high-temperature water cooling unit and a low-temperature water cooling unit. The fresh air system is composed of an air return-water heat exchanger, an air supply-water heat exchanger, a fresh air-water heat exchanger and a full heat recovery device. The independent temperature control system is composed of a dry fan coil and a radiation type tail end. The fresh air system and the independent temperature control system are connected in a series manner. The fresh air system is located at the upstream position of the independent temperature control system, low-temperature freeze water from a cold storage water pond passes through the fresh air system, then the temperature of the low-temperature freeze water is increased, and the low-temperature freeze water is sent to the independent temperature control system to be further utilized. By means of the cold supply system for the water cold storage independent temperature and humidity control area, gradient utilization of the refrigerating capacity is achieved, the defect that a traditional fan coil system is likely to be condensed is overcome, and the air quality is improved.
1 citations
References
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Patent•
03 Jun 1980
TL;DR: In this paper, a phase change material is used for heat addition to the fluid stream, which has a transition temperature which is approximately 10° F. below the mean seasonal ground temperature in the winter and slightly below the minimun undisturbed soil temperature at the depth at which the earth heat exchanger and heat storage device is embedded.
Abstract: A combination earth heat exchanger and heat storage device for a heat pump system in which the earth is the heat source/sink. The device includes an elongated, hermetically-sealed enclosure containing a phase change material which is in thermal contact with both the primary heat transfer fluid and the surrounding soil. The heat transfer fluid, a mixture of water and of antifreeze, is circulated in a closed loop through pipes, sections of which are jacketted by at least one enclosure containing a phase change material. For heat addition to the fluid stream, a phase change material is used which has a transition temperature which is approximately 10° F. below the mean seasonal ground temperature in the winter and slightly below the minimun undisturbed soil temperature at the depth at which the earth heat exchanger and heat storage device is embedded. The release of the latent heat to the heat transfer fluid limits the minimum temperature of the stream, thereby maintaining inlet conditions at the heat pump more favorable to its efficient operation than would otherwise be practicable. Alternately, for heat removal from the heat transfer fluid for cooling purposes, a phase change material is used which has a transition temperature which is approximately 10° F. above the mean seasonal ground temperature in the summer and slightly above the maximum undisturbed soil temperature at the depth at which the device is embedded. The absorption of latent heat from the fluid stream limits its maximum temperature, thereby significantly improving the coefficient of performance of the heat pump system for air conditioning purposes.
36 citations
Patent•
13 Apr 2005
TL;DR: In this article, a geothermal heat pump is designed to be stably operable over a long time adaptedly to a thermal situation of the ground, and its control method is provided.
Abstract: PROBLEM TO BE SOLVED: To provide a geothermal heat pump device stably operable over a long time adaptedly to a thermal situation of the ground, and to provide its control method. SOLUTION: A limit value of heat collection and heat radiation is set based on the outlet temperature of heat medium water from a heat pump 3 to an underground heat exchanger 2 measured with a temperature sensor 14, and the operation of the heat pump 3 is controlled not to exceed the set limit value of the heat collection and heat radiation. Thus, the underground temperature can be prevented from becoming too high (or low) to extremely decrease the heat collection/radiation efficiency during the operation of an air conditioner, the underground temperature can be prevented from gradually increasing (or decreasing) over a long time and disabling the heat collection/radiation, and hence stable operation can be achieved over a long time adaptedly to the thermal situation of the ground 3. COPYRIGHT: (C)2007,JPO&INPIT
26 citations
Patent•
30 May 2012
TL;DR: In this article, the authors proposed an air conditioning system for a high and large space building using capillary radiation tail end, in particular to an energy-saving air conditioning systems, which consists of a cold-heat source system, a radiating capillary tail end system, and a displacement and air supply system for processing fresh air by utilizing a solution humidity control machine set.
Abstract: The invention relates to an air conditioning system for a high and large space building using capillary radiation tail end, in particular to an energy-saving air conditioning system. The air conditioning system consists of a cold-heat source system, a radiating capillary tail end system, and a displacement and air supply system for processing fresh air by utilizing a solution humidity control machine set. The air conditioning method aims at solving the problem that the energy consumption of air conditioning for a high and large space is great and simultaneously improving the air conditioning comfort of the high and large space. A cold-heat source of the air conditioning system can be provided by a ground source heat pump system or be provided in a way that a ground source heat pump machine set is combined with other cold-heat sources. Capillary tail end products of the air conditioning system adopt capillary tail ends of various specifications, and specifically, the outer diameters of the capillary tail ends are less than 20 mm and intervals between every two capillary tail ends are less than or equal to 100 mm. The solution humidity control machine set of the air conditioning system can be selected from a heat pump type solution humidity control machine set or solution humidity control machine sets of other forms.
14 citations
Patent•
11 Feb 2009
TL;DR: In this paper, the utility model of an economic central air conditioning system was proposed to improve the cold storage efficiency of the host, making the host run at the highest EER, thus achieving the purposes of high efficiency and energy saving.
Abstract: The utility model relates to an economic central air conditioning system, which comprises a refrigeration host, and also comprises a cooling tower, a chilled water storage tank, a fan coil, and a control system; wherein, one end of the cooling tower is connected with one end 1 of the refrigeration host via a cooling water pump, while the other end of the cooing tower is connected directly with the other end 2 of the refrigeration host; one end of the chilled water storage tank is connected with one end 1 of the refrigerating host via a first valve, while the other end is connected in series with a second valve and a chilled water pump, and then is connected with the other end 2 of the refrigeration host; one end of the fan coil is connected with one end of the refrigeration host via a third valve and the first valve, while the other end of the fan coil is connected in series with a fourth valve, and the fourth valve is connected with the end of the chilled water storage tank which is connected with the first valve, and the fourth valve is also connected with the end of the second valve which is connected with the chilled water pump. The utility model improves the cold storage efficiency of the host, makes the host run at the highest EER, thus achieving the purposes of high efficiency and energy saving.
10 citations
Patent•
11 Nov 2009
TL;DR: In this paper, the utility model relates to an air conditioning system, and specifically provides an energy storage air-conditioning system, in particular to a high efficiency water energy storage APAC system with a plurality of water temperature natural layered middle-and small sized flat-bottomed cylindrical water storage tanks.
Abstract: The utility model relates to an air-conditioning system, and specifically provides an energy storage air-conditioning system, in particular to a high efficiency water energy storage air-conditioning system with a plurality of water temperature natural layered middle- and small sized flat-bottomed cylindrical water storage tanks. A plurality of water temperature natural layered middle- and small sized flat-bottomed cylindrical water storage tanks are connected in series or parallel, and a water distribution device is arranged in the water storage tank, so that the layered effect of water is good; and the water storage tank stores large temperature difference cold water or hot water at night so as to supply constant cooling or heating by day. The utility model is simple, flexible and reliable, and has high efficiency and low investment, and maximumly cuts peak load and fills valley load for power grid, optimizes the power structure, and saves the operating cost and the initial investment and the like.
9 citations