827results about "Machines using solar energy" patented technology

A sealed well direct expansion geothermal heat exchange unit, whose sealed well can be placed in ground and/or in water, consisting of a conventional direct expansion, or other heat pump, system wherein the exterior refrigerant heat exchange lines are placed within an insulated and sealed container, which container is supplied with a circulating heat conductive liquid from and to a sub-surface sealed well encasement, which container liquid may be supplemented with heat from a solar heating system, and which unit's hot refrigerant vapor line may be supplementary cooled by means of condensate water evaporative cooling, as well as a means to provide any direct expansion, and any closed-loop water-source, geothermal heat pump system with an optional solar heating supplement in the heating mode, and with an optional water-cooled vapor line supplement in the cooling mode.

The present invention relates to a directly-expanded type solar heat pump air conditioning and water-heating system, the directly-expanded type solar heat pump and ice cold-storage air conditioner are combined organically, and it is mainly formed from solar heat collector/evaporator, compressor, condenser, electronic expansion valve, four-way reverse valve, heat water storage tank, hot water tank, air conditioner tail end cover and system control component. The solar heat collector/evaporator adopts the plate type heat collector which has no cover plate and whose bottom is heat insulated and whose surface is coated with solar spectrum absorbing material, and the energy storage device adopts a closed pressure-bearing heat storage water tank whose interior is equipped with high-effective heat exchange equipment which can store heat in winter and can store ice in summer.

There is herein described energy storage systems. More particularly, there is herein described thermal energy storage systems and use of energy storable material such as phase change material in the provision of heating and/or cooling systems in, for example, domestic dwellings.

A transport refrigeration system, comprising: a compressor (22); a first electric motor (26) that provides a motive force to the compressor; at least one fan (52, 56, 82, 84, 86); a second electric fan motor (54, 56, 88, 90, 92) that provides a motive force to the fan; a solar PV electrical power source (220); an electric energy power source (230); a engine driven generator electrical power source (210); and a power management controller (40) coupled to route power selectively and concurrently from two of the electrical power sources (210, 220, 230) to provide electrical power to the first motor (26) and the second motor (54, 56, 88, 90, 92).

A portable refrigeration unit is described. The unit has a body and a lid. The body has an outer housing and an insulated interior container that is thermally insulated from the outer housing. The insulated interior container has a bottom surface and at least one sidewall forming a cavity for receiving an article to be stored therein The lid has an outer surface and an inner surface and the lid is insulated. There is at least one solar collector on at least a portion of the outer surface of the lid. This solar collector provides electrical power to one or more cooling units and to one or more rechargeable batteries. The cooling units include an interior and an exterior heat sink, and an interior and exterior fan and an interior and exterior vent. Air in the cavity at a first temperature passes from the cavity through the interior vent to the interior heat sink where heat in the air is transferred to the exterior heat sink and where the air at a second lower temperature is transmitted by the interior fan back into said cavity. Ambient air passes through the exterior vent so that the heat in the exterior heat sink is transmitted from the exterior heat sink to the air and the air is discharged by said exterior fan.

An insulated cooler has an outer housing, an inner lining and an insulation layer between the housing and lining. The inner lining forms a first storage compartment and along one wall of the lining forms a second audio system docking station compartment. The audio system can be removed and replaced in the docking station. A pair of speakers on the exterior housing positioned within the insulation layer is connected through an amplifier to the audio system in the docking station compartment. An internal RF receiver and an external RF transmitter control the audio system. A battery power source drives the amplifier and can recharge the audio system power source. A solar cell on the outside lid of the cooler can recharge the battery power source.

The present invention relates to novel energy efficient sorption processes and systems for cooling, dehumidifying and heating using multistage liquid desiccant regenerators, or hybrid cooling systems or adsorption cooling systems involving appropriate combinations of rotating contacting devises, adsorption modules with heat transfer passages in thermal contact with the adsorption module wall and switchable heat pipes. The sorption processes of this invention help in flexible designing of compact cooling, dehumidifing, heating systems easy operability. The adsorption module of this invention leads to lower cycle times as low as 5 minutes; makes it possible to achieve high system Coefficient of Performance (COP) up to 0.9 due to reduced thermal mass; offers high specific cooling power in the range of 50 to 750 W/kg of AC; is easy to manufacture and operates at low costs. The refrigeration cum heating system of this invention with heat pipe in thermal contact with the adsorption modules increase the heat transfer rates without increasing the thermal mass leading to increase of COP and the single or multistage pressure equalisation increases the internal regeneration of heat thereby increasing the COP, reducing the cycle time resulting in increased specific cooling power (SCP), reducing the required quantity of adsorbent/refrigerant making the module compact and cost effective.

An integrated solar cell system applies energy created by a solar cell module. The integration system includes a solar cell module, a low-grade heat recovery means, and a process system. The low-grade heat recovery means recovers waste heat from the solar cell module and connects the solar cell module to the process system. The process system is powered at least partially by thermal energy derived from waste heat generated by the solar cell module.

A cold storage device includes a rechargeable battery set disposed in an inner receiving space in a case body, a thermoelectric cooling unit mounted in the case body and connected electrically to the rechargeable battery set for cooling a cold storage space in the case body, a charging mode selecting unit operable so as to select one of electrical energy converted from solar power by a solar power collecting plate, DC power from an external DC power source, and DC power obtained by converting AC power from an external AC power source to charge the rechargeable battery set, and a power output selecting unit operable so as to output one of the electrical power from the rechargeable battery set and AC power obtained by converting the electrical power from the rechargeable battery set at a corresponding one of AC and DC output ports.

The multiple heat source multifunctional solar energy heat pump consists of one solar heat collecting system and one multifunctional heat pump system. The solar heat collecting system includes full glass tube solar heat collector, large heat accumulating water tank, solenoid valve and high temperature circulating pump; and the multifunctional heat pump system includes variable frequency compressor, outdoor water cooling source heat exchanger, outdoor air cooling source heat exchanger, indoor air cooling source heat exchanger, indoor coil pipe water heating tank, condensing coil pipe, electronic expansion valve, liquid storage and two electromagnetic triple valves. The solar heat collecting system and the multifunctional heat pump system are connected through the variable frequency high temperature circulating pump and solenoid valve. The present invention can utilize both solar energy and air source as the heat source of the heat pump, and has several functions and raised COP value of heat pump system.

The invention discloses a bomb heat refrigerating cycle method driven by low-grade heat and a system thereof. In the system, memory alloy of a high-temperature drive group, being martensite at normal temperature and zero stress, absorbs heat from a low-grade heat source and removes heat to a normal-temperature heat sink, and memory alloy of a low-temperature refrigeration group, being austenite at normal temperature and zero stress, is driven to refrigerate a low-temperature refrigeration space.

The invention discloses a gas-driven air source heat pump heat supply unit for a central heating system. The gas-driven air source heat pump heat supply unit for the central heating system comprises an internal combustion engine. The internal combustion engine, a compressor, a condenser and a flue gas waste heat recoverer are connected in sequence, so that a gas-heating hot water system is formed. The condenser is further connected with a first evaporator which is connected back to the compressor, so that an air source heat pump refrigerant system is formed. The flue gas waste heat recoverer is arranged on a flue gas pipeline of the internal combustion engine. A water outlet pipeline of the flue gas waste heat recoverer is connected with a water supply pipeline of a heat supply system, and the heat supply system supplies circulating high-temperature water to users. The internal combustion engine is adopted to drive a heat pump to pump heat in air, then waste heat continues to be applied to the heat supply system, the integral heat energy conversion rate can be 200%, and the heat energy conversion rate is high. The outlet water temperature of the condenser can be 60 DEG C or over by increasing the condensation pressure, water discharged out of the condenser further absorbs flue gas heat through the flue gas waste heat recoverer arranged on the exhaust pipeline of the internal combustion engine, and the water supply temperature can be up to 85 DEG C.

Energy-efficient data center cooling techniques that utilize free cooling and/or solar cooling are provided. In one aspect, a cooling system is provided including a cooling tower; one or more modular refrigeration chiller units; and a water loop that can be selectively directed through the cooling tower, through one or more of the modular refrigeration chiller units or through a combination thereof. Another cooling system is provided including a solar cooling unit; one or more modular refrigeration chiller units; and a water loop that can be selectively directed through the solar cooling unit, through one or more of the modular refrigeration chiller units or through a combination thereof.

A solar-powered air conditioning system comprising an energy-storage medium made of a mixture of 5%-20% glycerin, 2.5%-10% alcohol and water in a thermally insulated container is disclosed. While frozen, the said energy storage medium becomes slurry of thin sheets of ice dispersed in liquid, which will not damage the container and the heat-exchange pipes. The system uses a solar photovoltaic panel to directly drive a vapor-compression refrigeration unit to freeze the said energy storage medium. A ventilation system forces air through a heat-exchange coil in the said energy-storage medium, to generate chilled air to cool the space. In the absence of sunlight, the energy-storage medium can keep frozen for days. With or without sunlight, the flowing air chilled by the frozen energy-storage medium continues to cool the room or the entire building.

The present disclosure provides for a method and apparatus of providing air conditioning from a waste heat source. A vapor state expander is provided producing mechanical work, and a compressing unit is at least partially operative responsive to the mechanical work output of the vapor state expander. In another exemplary embodiment a second liquid state expander producing mechanical work is further provided, the compressing unit operative further responsive to the mechanical work of the liquid state expander. The apparatus disclosed is further capable of providing backup heating and cooling from an additional power source when the waste heat source is insufficient.

The invention discloses a multi-objective optimization operation method for a combined cooling, heating and power supply system, which comprises the steps of firstly establishing mathematical models respectively for equipment of a combined supply system and a separated supply system; then respectively calculating the total operation cost, the total carbon emission and the total primary energy consumption of the combined supply system and the separated supply system in allusion to each set of the equipment; building a multi-objective optimization model by adopting a weighting method, then performing single-objective optimization solving on the separated power supply by adopting a mixed integer linear programming solver, finally obtaining an optimization operation strategy of the combined supply system, and being coupled to a ground source heat pump. The multi-objective optimization operation method can effectively improve the energy utilization efficiency of terminal users, alleviate the contraction between energy supply and demand in a regional power grid, promote the local absorption of distributed renewable energy and realize social benefits of the combined supply system to the greatest extent.

The hybrid aqua-ammonia and lithium bromide-water absorption chiller is an aqua-ammonia absorption refrigeration system integrated with a lithium bromide-water absorption refrigeration system. By integrating a solar-powered lithium bromide-water absorption refrigeration system into the aqua-ammonia absorption refrigeration system, evaporator temperatures below the freezing point of water may be generated at lower operating pressures and lower generator temperatures than in conventional aqua-ammonia absorption refrigeration systems.

An air-cooled, single-effect, air conditioning system includes a first set of solar collectors configured to obtain energy to facilitate release of refrigerant from an absorbent-refrigerant solution in a generator. A tank is configured to store the energy for nighttime operations of the air conditioning system. One or more valves are configured to regulate consumption of the stored energy to maintain continuous cooling of at least one load.