A three-pipe multi-split system. The three-pipe multi-split system includes an outdoor unit, a plurality of indoor units, and a plurality of hydraulic modules connected respectively by air pipes, liquid pipes, and condensate water pipes. The outdoor unit includes a compressor, a high-pressure pressure sensor, an oil separator, a first switching device, a second switching device, a third switching device, a finned heat exchanger, a compressor heat dissipation module, a plate type heat exchanger, a first electronic expansion valve, a second electronic expansion valve, a filling needle valve, an air-liquid separator, a low-voltage switch, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, an outdoor unit fan, and an outdoor unit temperature detection subassembly; each indoor unit includes an indoor unit heat exchanger, a third electronic expansion valve, an indoor unit fan, and an indoor unit temperature detection subassembly.

A local thermal energy consumer assembly and a local thermal energy generator assembly to be connected to a thermal energy circuit comprising a hot and a cold conduit. The local thermal energy consumer assembly is connected via a flow controller to the hot conduit. The local thermal energy generator assembly is connected via a flow controller to the cold conduit. The flow controller is selectively set in pumping mode or a flowing mode based on a local pressure difference between heat transfer liquid of the hot and cold conduits.

An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.

Air conditioning systems for cooling multiple-zone spaces, each zone having a thermostat, where each of multiple pump modules delivers chilled water to chilled beams in a plurality of zones and a chilled-water distribution system circulates chilled water through a chilled-water distribution loop to the multiple pump modules. Current dew points are determined in zones that call for cooling, and temperature of chilled water delivered to the chilled beams is maintained for each pump module at least a predetermined temperature differential above the highest dew point within the zones served by that pump module. Each zone has a zone control valve to shut off flow to that zone. Serving a plurality of zones from each pump module reduces how many pump modules are required. Zones served by one pump module may be selected to have similar thermal loads. Pump modules may supply hot water when heat is needed instead of cooling.

The disclosed technology includes an integrated system including a space conditioning system, a liquid heating system, and a controller. The space conditioning system can include a refrigerant circuit fluidly connecting a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, an expansion valve, and a reversing valve such that refrigerant can flow through the circuit. The liquid heating system can include a liquid heating device and a liquid circuit configured to direct liquid from the liquid heating device through the first heat exchanger. The controller can be in electrical communication with the space conditioning system and the liquid heating system. The controller can be configured to determine a demand of the space conditioning system and the liquid heating system, and in response, output instructions to a plurality of valves to direct the refrigerant through the refrigerant circuit and direct the liquid through the liquid circuit.

A furnace with a baffle assembly including at least one horizontal gap, and a heating, ventilation, and/or air conditioning (HVAC) system incorporating the same are provided. The furnace includes a furnace heat exchanger, a baffle assembly, and a fan. The baffle assembly is disposed adjacent to the furnace heat exchanger. The fan is in airflow communication with the furnace heat exchanger. The baffle assembly may include a first side and a second side. Each of the first side and the second side may respectively include a first section and a second section. A horizontal gap may be disposed between the first section and the second section (e.g., on either or both of the first side and the second side). The horizontal gap(s) may increase the efficiency of the furnace and/or the HVAC system.

A kitchen air-conditioning system comprises an air-conditioning assembly (1) and a range hood assembly (2); the air-conditioning assembly (1) comprises a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through a plurality of refrigerating medium pipes (14); the range hood assembly (2) comprises a housing (21) and a fan (22), a rear air exhaust passage (3) is disposed outside of the housing (21); a third heat exchanger (4) and the fan (22) are disposed in the rear air exhaust passage (3); the third heat exchanger (4) communicates with the second heat exchanger (13) through a secondary refrigerant pipe (5). As the third heat exchanger (4) in the rear air exhaust passage (3) in communicates with the second heat exchanger (13) through the secondary refrigerant pipe (5), heat generated by the operation of the air-conditioning assembly (1) can be quickly exhausted to the outside through the fan (22).

A water-heating system, including: a controller; a refrigerant-water heat exchanger for exchanging heat between refrigerant and water; a sensor circuit for measuring a current water temperature of water in a water heater and providing the current water temperature to the controller; a first refrigerant pipe for passing the refrigerant from a refrigerant source to the refrigerant-water heat exchanger; a second refrigerant pipe for passing the refrigerant from the refrigerant-water heat exchanger to the refrigerant source; a first water pipe for passing the water from the water heater to the refrigerant-water heat exchanger; a second water pipe for passing the water from the refrigerant-water heat exchanger to the water heater; and a water pump for pumping water from the water heater to the refrigerant-water heat exchanger via the first water pipe and from the refrigerant-water heat exchanger to the water heater via the second water pipe based on a control signal.

A kitchen air-conditioning system comprises a air-conditioning assembly (1) and a range hood assembly (2); the air-conditioning assembly (1) comprising a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through a plurality of refrigerating medium pipes (14); and the air-conditioning assembly (1) has a fresh air inlet (16) and a fresh air outlet (17), the fresh air coming from the fresh air inlet (16) is divided into two paths; the fresh air entering the first heat exchanger (12) flows into the kitchen through the fresh air outlet (17), and the fresh air entering the air intake area (21) cools the third heat exchanger (3) in the range hood assembly (2) and is then exhausted to the outside through the range hood, which is helpful to reduce the intake-air temperature of the second heat exchanger (13), thereby improving the energy efficiency of the air conditioner.

A central air-conditioning system, comprises a plurality of air-conditioning assemblies (1) and a plurality of range hood assemblies (2); each air-conditioning assembly (1) comprises a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through refrigerating medium pipes (14); all the range hood assemblies (2) are in communication with the public flue (6); a third heat exchanger (3) and the second heat exchanger (13) is connected through a secondary refrigerant channel (4); each end of each secondary refrigerant channel (4) respectively exchanges heat with the second heat exchanger (13) and the third heat exchanger (3). As all the range hood assemblies (2) are in communication with the public flue (6), the third heat exchanger (3) exchanges heat with the second heat exchangers (13) through the secondary refrigerant channel (4), when the system is operating, the heat energy generated by the air-conditioning assemblies (1) can be discharged through the public flue (6).