An in-ground geothermal heat pump (GHP) closed loop optimization method is disclosed for designing, analyzing, optimizing, controlling, and simulating a detailed model and analysis of a building's in-ground geothermal heat pump system, including borehole length, number of boreholes, heat pump capacity, grid layout, total electric operating costs, efficiency ratios, and hybrid designs, among others. In one aspect of the disclosure described herein, the GHP optimization method can reliably and efficiently predict and optimized the fluctuations of the GHP equipment performance in very small increments which enable the determination of energy consumption and demand information on a specific and unique hourly schedule basis for the building design, including incorporating thermal load data for each individual zone of the building. More specifically, the small increment method here can be used to eliminate overly broad approximations by evaluating GHP performance that is specific to building dynamics, constants, and variables for all of the building individual zones and the building's hourly operating schedule, thereby providing an efficient, reliable, simple, and effective geothermal heat pump design and simulation model.

Controlling heating and cooling in a conditioned space utilizes a fluid circulating in a thermally conductive structure in fluid connection with a hydronic-to-air heat exchanger and a ground heat exchanger. Air is moved past the hydronic-to-air heat exchanger, the air having fresh air supply and stale air exhaust. Sensors located throughout the conditioned space send data to a controller. User input to the controller sets the desired set point temperature and humidity. Based upon the set point temperature and humidity and sensor data, the controller sends signals to various devices to manipulate the flow of the fluid and the air in order to achieve the desired set point temperature and humidity in the conditioned space. The temperature of the fluid is kept less than the dew point at the hydronic-to-air heat exchanger and the temperature of the fluid is kept greater than the dew point at the thermally conductive structure.

An arrangement of multiple environmental control systems for a multi-unit structure has a first environmental control system installed in a first unit, a second environmental control system installed in a second unit, a system monitor in communication with each of the environmental control systems and a firewall. Each environmental control system has a control unit coupled to the system monitor through the firewall that prevents unauthorized devices from accessing the respective control unit and a HVAC system device coupled to the respective control unit through the firewall. For each unit, a local user device that is located inside the unit is coupled to the control unit through a local communication interface, and an external user device that is located outside the unit communicates with the control unit through the firewall.

Disclosed are a photovoltaic air-conditioning system and a photovoltaic air conditioner having same. The photovoltaic air-conditioning system comprises a photovoltaic battery, a switch module, an inverter circuit, a rectification circuit and a compressor inverter; an input end of the switch module is electrically connected to a power grid; a first output end of the switch module is electrically connected to a first input/output end of the inverter circuit; a second output end of the switch module is electrically connected to an input end of the rectification circuit; an output end of the rectification circuit is electrically connected to an input end of the compressor inverter; the input end of the switch module is not simultaneously conducting with both of the first output end and the second output end of the switch module.

This invention provides a residential or building apparatus to: 1. transfer water heated by the sun's heat into proximity with the air space inside any residence or building to warm it, and 2. during spring, summer, fall, and winter, provide the sun's heating for the hot water heater, and 3. generate electricity, and charge a battery, during daylight hours by the use of focused sunlight to heat water to power a steam-powered electricity generator, and 4. move water cooled by the subsurface ground into proximity with the air space inside any residence or building to cool it.

In one example, a shell includes walls that collectively define an interior space of the shell, the interior space sized and configured to receive heat generating equipment. An internal heat exchanger disposed within the interior space is arranged for thermal communication with heat generating equipment when heat generating equipment is located in the interior space. Additionally, an external heat exchanger is located outside of the shell and arranged for fluid communication with the internal heat exchanger. Finally, a prime mover is provided that is in fluid communication with the internal heat exchanger and the external heat exchanger, and the prime mover is operable to circulate a flow of coolant through the internal heat exchanger and the external heat exchanger.

An HVAC system for a multi-unit building having a riser stack in flow communication with a single unit HVAC system. The single unit HVAC system has a first heat exchanger thermally connected to the riser stack, a second heat exchanger thermally connected to a fluid distribution system within the unit, and a closed loop fluid flow path extending between the first and second heat exchangers. The first heat exchanger exchanges heat between a riser stack fluid in the riser stack and the closed loop fluid in the closed loop fluid flow path and the second heat exchanger exchanges heat between the closed loop fluid and a distribution fluid of the fluid distribution system.

A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a heating fluid circuit, a cooling fluid circuit, and a storage fluid circuit. A thermal system of the HVACR system absorbs energy from the storage fluid circuit and rejects it to the heating fluid circuit. The storage fluid circuit includes thermal storage tanks containing thermal storage material that can provide energy for heating or absorb energy for cooling depending on the state of the thermal storage material. Heating can be provided using the heating fluid circuit and the heat provided by the thermal system. Cooling can be provided using the cooling fluid circuit by absorbing energy from the conditioned space using a cooling fluid and rejecting energy from the cooling fluid to the storage fluid circuit. The thermal storage tanks can have heat added to them using an air source heat pump system to support heating operations.

A computer-implemented method for anomaly detection in a data processing system comprising a processor and a memory comprising instructions which are executed by the processor, the method including: receiving, by the processor, a real-time airflow pattern detected from an airflow alerter, wherein the real-time airflow pattern is generated by a heating, ventilation, and air conditioning (HVAC) system in a particular facility; comparing, by the processor, the real-time airflow pattern to a predetermined airflow pattern for the HVAC system; and when the real-time airflow pattern is different from the predetermined airflow pattern, receiving, by the processor, an alert message indicating an anomaly from the airflow alerter.

A system and a method for comprehensive utilization of renewable energy and waste heat of a data center are provided. The system includes a data center, a water cistern, a water circulating system and a refrigerant circulating system. The water cistern is used to adopt heating capacity of the data center to complete a heat storage process within a set first period, and adopt the heating capacity stored in the heat storage process to supply a heat release process within a set second period. The water circulating system is provided with a plurality of water circulating loops. The refrigerant circulating system is provided with a plurality of circulating systems. The heat storage process and the heat release process are implemented by cooperation of the plurality of water circulating loops and/or the plurality of circulating systems, which may effectively reduce heat costs of users in winter.