Disclosed is a control parameter determining method for a photovoltaic air conditioning system, specifically including: determining a real-time inductance parameter of a controlled object of the photovoltaic air conditioning system according to real-time grid-connected power of the photovoltaic air conditioning system; substituting the real-time inductance parameter into the controlled object of the control system to calculate a basic control parameter of the control system; presetting a plurality of adjustment parameters corresponding to different grid-connected power respectively; when the real-time grid-connected power is matched with one of the grid-connected power, selecting an adjustment parameter corresponding to the matched grid-connected power to modify the basic control parameter, to obtain a target control parameter. The present disclosure further disclosed a control parameter determining apparatus and a control system for a photovoltaic air conditioning system.

A cooling system for a photovoltaic panel including micro flat heat pipes (HP) integrated with thermoelectric generators (TEG) and a cooled water reservoir for cooling the working fluid in heat pipes. The cooled water in the reservoir is pumped from the condensate pan of an air conditioner. Experimental results show that cooling system reduced the average temperature of the panel by as much as 19° C. or 25%. Further, the output power of the photovoltaic panel increased by 44% when the photovoltaic panel was used in a very hot climate (30-40° C.). An additional two watts of power was generated by the TEGs.

The present invention is in the field of an improved naturally ventilated façade with incorporated PV that can provide heating and ventilation and can provide electricity. Especially for buildings receiving high amounts of sunshine and in particular when such buildings need ventilation such systems can be applied advantageously.

A photovoltaic air conditioner control method and apparatus and a photovoltaic air conditioner. The method includes: detecting in real time the grid-connected side inverter module temperature and the grid-connected side current of a photovoltaic air conditioner; determining the interval in which the grid-connected inverter module temperature is located and the interval in which the grid-connected side current is located; and, on the basis of the determining results, performing frequency-limiting and frequency-reduction control of the photovoltaic air conditioner.

The window air conditioning and heating unit controls the environmental conditions within a room of a building. The window air conditioning and heating unit mounts in a window of the room. The window air conditioning and heating unit measures and monitors the temperature of and the humidity in the air in the room. The window air conditioning and heating unit comprises an environmental control structure, a control circuit, and a housing. The environmental control structure provides the heat and mass transfer capabilities required to control the temperature and humidity within the room. The control circuit controls and powers the operation of the environmental control structure. The environmental control structure and the control circuit are contained in the housing.

The air conditioning system with solar-powered subcooling system includes a main cooling system having an evaporator, a compressor, a condenser, and an expansion valve configured to operate in a conventional vapor compression refrigerant cycle. The subcooling system includes a compressor, a condenser, and an expansion valve, the compressor being powered by at least one rechargeable battery connected to a photovoltaic solar panel. The main system and the subcooling system are linked by a heat exchanger having a primary coil in the main system between the condenser and the expansion valve and a secondary coil in the subcooling system disposed between the expansion valve and the compressor. The main system and the subcooling system may use the same type of refrigerant, or different refrigerant types. The additional cooling provided to the refrigerant in the main system by subcooling increases the efficiency of the air conditioning system.

An air purifier may include a main body including an inlet and an outlet; a fan arranged in the main body; a solar cell arranged on a first side of the main body; a first light sensor arranged on a second side, which is different from the first side; a second light sensor arranged on a third side, which is different from the first and second sides; a driver arranged to rotate the main body; and a controller configured to control the fan to suck air into the main body through the inlet and discharge the air out of the main body through the outlet, and control the driver to rotate the main body based on an output signal from the first light sensor and an output signal from the second light sensor.

An air conditioning system for conditioning room air comprising an air supply device (1) having an extraction air chamber (2), into which room extraction air from the room is introduced, and a power source (3) for powering the air supply device. The air supply device comprises at least one pettier-element (4) having a first side (20) arranged to condition at least part of the room extraction air before it being diffused into the room.

An air handling unit (AHU) or rooftop unit (RTU) or other building device in a building includes one or more powered components and is used with a battery, and a predictive controller The battery is configured to store electric energy and discharge the stored electric energy for use in powering the powered components. The predictive controller is configured to optimize a predictive cost function to determine an optimal amount of electric energy to purchase from an energy grid and an optimal amount of electric energy to store in the battery or discharge from the battery for use in powering the powered components at each time step of an optimization period.

A system for allocating one or more resources including electrical energy across equipment that operate to satisfy a resource demand of a building. The system includes electrical energy storage including one or more batteries configured to store electrical energy purchased from a utility and to discharge the stored electrical energy. The system further includes a controller configured to determine an allocation of the one or more resources by performing an optimization of a value function. The value function includes a monetized cost of capacity loss for the electrical energy storage predicted to result from battery degradation due to a potential allocation of the one or more resources. The controller is further configured to use the allocation of the one or more resources to operate the electrical energy storage.