A system, an arrangement and method for heating and cooling of several building spaces-or buildings includes two or more building spaces or buildings, and a secondary thermal network including a supply line and a return line. The arrangement further comprises two or more building connections arranged parallel to each other and between the supply line and provided in connection with the two or more building spaces or buildings, a ground hole and a geothermal heat exchanger provided to the ground hole and arranged in connection with the secondary thermal network.

An exemplary heating, ventilation, and air conditioning (HVAC) system for a building includes a primary heat pump system having a primary heat pump system size, a secondary heat pump system having a secondary heat pump system size less than the primary heat pump system size, a thermal energy storage system, and a control system operable to control operation of the primary heat pump system and the secondary heat pump system. The control system may limit operation of the secondary heat pump system to a first time period, and operates the primary heat pump system according to demand of the building.

The present invention relates to an electrically driven, vapour compression heat pump device. The heat pump device comprises a variable speed or variable capacity refrigerant compressor, a compression stage having a first condenser, an expansion stage having a first evaporator, a DC to AC variable speed compressor drive inverter unit, a grid AC to DC power supply unit and an electronic control unit. The control unit varies the thermal capacity, and the power consumed by the device, in response to an input from at least one of: a renewable electricity generation input, a premises net consumption monitor, a utility grid frequency monitor, and a third party control input.

A geothermal heat exchanger, a geothermal heat arrangement and to a method in connection with a geothermal heat arrangement. The geothermal heat exchanger includes a piping arrangement having a rise pipe and a drain pipe, and a first pump arranged to the piping arrangement. The rise pipe and drain pipe are arranged in fluid communication with each other for circulating the primary working fluid. The rise pipe is provided with a first thermal insulation surrounding the rise pipe along at least part of the length of the rise pipe and the first pump is arranged to circulate the primary working fluid in a direction towards a lower end of the rise pump.

A blower and heat exchanger component of a heat pump includes a physically moveable service panel. The service panel can slide out on a first side or on a second side opposite to the first side, where an existing air duct connects to a third side that is orthogonal to the first and second sides. This sliding service panel configuration allows a same blower/heat exchanger component to adapt the duct being located on either side of the unit (e.g., by installing the component rotated by 180 within the installation space as appropriate). The service panel can slide out on both sides of the component, thereby affording access for service, irrespective of orientation of the component as installed relative to the duct.

A blower and heat exchanger component of a heat pump, includes physically moveable interface blocks located at the corners. The blocks are relocatable to different corner locations on the unit, to allow a same blower/heat exchanger component to adapt to an existing duct being located on either side (e.g., by installing the component rotated within the installation space as appropriate). Active interface block(s) moveable to different corners afford access to power connection and/or data connections and status display features. Blank blocks occupy the corner locations left vacant by relocation of active blocks to the side of the unit serving as the front for a particular installation. The moveable corner blocks afford access to the unit for power and data connection, and status display, irrespective of orientation as installed relative to an existing ducting layout of a building.

A helical pile including a heat exchanger is described. The pile is formed from a lead section and one or more extension sections. The interior of the lead and extension sections are hollow and form a heat exchanger cavity. At the lower end of the lead section is a helical blade. Rotation of the lead section causes the helical blade to screw into the ground, thus pulling the lead section downward. Extension sections are added to the lead section and the pile is rotated until it is installed to a desired depth. The pile includes an inflow tube extending a predetermined distance into the heat exchanger cavity and an outflow port connected with the heat exchanger cavity. In operation, a heat carrying fluid is pumped into the inflow tube from a heat source or sink, for example, a heat pump for a building heating and cooling system. The fluid exits the tube at a point near the bottom of the heat exchanger cavity. The fluid flows upward through the heat exchange cavity and exchanges heat with the surrounding soil. The fluid flows out through the outflow port and back to the heat source or sink.

A device for heating by absorbing latent heat of solidification of water, including a compressor (1), a condenser (2) and multiple evaporators (E1, E2) connected in parallel, each evaporator (E1, E2) has an electronic expansion valve (D1, D2) at its inlet, a solenoid valve (V1, V2) at its outlet; after the evaporators (E1, E2) are connected in parallel, outlets of the evaporators (E1, E2) are connected to an inlet of the compressor (1) and inlets of the evaporators (E1, E2) are connected to an outlet of the condenser (2); an outlet of the compressor (1) is connected to an inlet of the condenser (2); the compressor (1), the condenser (2) and the multiple parallel evaporators (E1, E2) form a closed loop system through pipelines; there are circulating refrigerants in the closed loop system, and heating and deicing processes are realized through a circulation of refrigerants; the solenoid valves (V1, V2) at the outlets of the evaporators (E1, E2) are switched between opening or closing to realize switching between evaporating and deicing functions of the evaporators (E1, E2).

A geothermal adapter for use with a heat pump includes an outer chamber being sealed under vacuum and having a plurality of heat sinks extending outward, and an inner chamber positioned concentrically and within the outer chamber. The inner chamber has an outlet configured to be coupled to a first portion of a refrigerant conduit of the heat pump. The geothermal adapter also includes a central chamber positioned concentrically and within the inner chamber, where the central chamber has an inlet configured to be coupled to a second portion of the refrigerant conduit of the heat pump. The center chamber extends through the inner chamber to a bottom end that is open and in fluid communication with the inner chamber.

Disclosed is a heat pump system for an electric vehicle including an outdoor fan configured to blow air to an outdoor heat exchanger, a coolant temperature sensor installed at a coolant line and configured to detect a temperature of a coolant circulating in a power train module or a battery, an outdoor heat exchange sensor installed on one side of the outdoor heat exchanger and configured to detect an outdoor heat exchanger outlet pressure defined as a pressure of a refrigerant passing through the outdoor heat exchanger, and a compressor inlet sensor installed on an intake side of a compressor and configured to detect a compressor inlet temperature defined as a temperature of the refrigerant flowing into the compressor. Whether frost sticking occurs may be determined based on information detected by the coolant temperature sensor, the outdoor heat exchange sensor, and the compressor inlet sensor.