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.

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.

An ultra-low pressure, vapor analyte, and vapor pathway parameter monitoring system can include an embedded server comprising a base radio and memory. In some embodiments, the embedded server is communicatively coupled to a third-party database. The system can include a first monitoring device comprising a first ultra-low pressure sensor and a first radio communicatively coupled to the base radio. The embedded server can be remotely located with respect to the first monitoring device whereby the embedded server receives first pressure data from the first monitoring device.

A ventilation and lighting system having a fan, a grille having one or more lighting elements and a controller that coordinates operation of the fan and the one or more lighting elements from a remote location. The controller defines scene control configured to define one or more scenes, each of which defines a predefined light control and fan control. The light control can have predefined settings of color, duration, intensity, saturation, and/or correlated color temperature. The fan control can have predefined settings of duration and/or power.

A method of cooling air includes a liquid coolant subsystem including a cool water source configured to hold water, an air cooling subsystem including an air chamber that contains air therein, an air conditioning apparatus including a heat exchanger of a liquid-to-air type having a heat sink in thermal communication, a fan assembly configured to move air along the heat sink of the heat exchanger, a thermostat, a temperature sensor, and a control circuit in electronic communication with the temperature sensor and the thermostat, a plumbing subsystem including an inlet piping component in fluid communication with heat exchanger, an outlet piping component in fluid communication with the exchanger, and a solenoid valve. The control circuit may be configured to activate the fan assembly and to open the solenoid valve, allowing for the transfer heat to water from the air moved by the fan assembly.

Various arrangements are provided related to thermal energy coordination systems. A thermal energy coordination system may analyze solar irradiance measurements to identify an overgeneration solar energy event. The system may activate a thermal energy storage event to coincide with the overgeneration solar energy event at the plurality of solar panels. The system, which can include many network-enabled smart thermostats, may control air conditioners or other HVAC system within various structures. The system may determine a time to initiate cooling and a temperature to which to cool the structure based upon the received indication of the thermal energy storage event. Cooling may be initiated by the system based on the determined time and the determined temperature in response to the received indication of the thermal energy storage event

A solar liquid-heating-and-cooling system (20) includes: 1. a hot-liquid storage-tank (22); 2. a hot-liquid manifold-tank (26); 3. a coaxial heating-and-cooling-tube (24) that connects downward from the hot-liquid storage-tank (22) to the hot-liquid manifold-tank (26); 4. a double layer heating-and-cooling collector-array-panel (32) located beneath the hot-liquid manifold-tank (26), the panel (32) including, connected to the hot-liquid manifold-tank (26): a. an upper layer of glazed heating-tubes (36); and b. a lower layer of unglazed cooling-tubes (56); 5. parabolic-trough mirror reflectors (64) that are located between the upper and lower layers of tubes (36, 56); 6. cold-liquid manifold-tank (92) located below the panel (32) connected to lower ends both of the glazed heating-tubes (36) and of the unglazed cooling-tubes (56); 7. a cold liquid storage tank (98); and 8. a coaxial heating-and-cooling-tube (96) that connects downward from the cold-liquid manifold-tank (92) to the cold liquid storage tank (98).

Devices and methods for concentrated radiative cooling using radiative cooling coatings in combination with mid-infrared reflectors. Concentrated radiative cooling (CRC) devices include an object to be cooled that is coated with a radiative cooling material and a mid-infrared (mid-IR) reflector configured to reflect thermal energy radiated from a surface of the object to deep space. The object may be nested in a mid-IR reflective trough such that substantially an entirety of the object's surface area contributes to radiative cooling. The radiative cooling material may be a coating such as a paint or film that is applied directly to the object's exterior surfaces to reduce thermal resistances. The radiative cooling coating is configured to lose thermal energy from the object by means of exhibiting high emissivity for wavelengths of 8 to 13 micrometers, and in some arrangements of 5 to 30 micrometers.

A low profile flexible solar thermal panel has low-cost, thin sheet foil and film materials fabricated as an integrated airtight solar thermal panel and a dual-port bifurcated duct adapter and formed metal foil air passages. The bifurcated air duct and formed metal foil layer enables, the panel to require only a single duct orifice through a mounting surface (such as a roof or wall) to provide both ingress and egress for air flow. The formed metal foil layer supplies a rigid support for two laminar air passages that steer forced air from the ingress port through a lower laminar air passage and returns it through the upper laminar air passage to the egress port in the bifurcated duct. The air duct enables measurement of the inlet air temperature, outlet air temperature and circulated air volume, further enabling electronic measurement of total energy produced in standard units.

An HVAC renewable energy management system and components to enable the efficient use of locally produced power from an onsite nanogrid and interconnected nanogrids of a cohesive direct current microgrid network. The system comprises a central controller for controlling one or more intermittent distributed energy resource (DER), source converter, distributed storage device, energy storage converter, power bus, internal load, and interface gateway to one or more external grid for bi-directional power control, sharing, and consumption. System hardware and software elements are configured for internetworking communication, management, control, demand side management, and power balance, using maximum power point tracking to shift power consumption, dynamic matching of local DER production, power quality assurance, system protection, power interconnection management, interface management, metering, revenue settlement, system optimization, and security. The system can match local power production with an individual household's power consumption to reduce intermittency and ultimately total microgrid consumption.