Dual source heat pump system

A thermal system for a facility, comprising:

• a facility fluid circuit, including:
• a facility fluid for circulating in the facility to provide thermal conditioning of the facility;
• and
• a facility heat exchanger for exchanging heat with the facility fluid;
• a ground-source heat pump thermally connected to the facility fluid circuit, including:
• a ground-source heat pump fluid circuit;
• a ground-source heat exchanger positioned on the ground-source heat pump fluid circuit and configured to exchange heat with a downhole fluid;
• the facility heat exchanger positioned on the ground-source heat pump fluid circuit;
• a ground-source working fluid for circulating through the ground-source heat pump fluid circuit to exchange heat with the facility fluid at the facility heat exchanger, and to exchange heat with the downhole fluid of a downhole fluid circuit at the ground-source heat exchanger;
• and
• an exhaust heat exchanger connected to the downhole fluid circuit and configured, via one or more fluid distribution devices, to exchange heat between the downhole fluid and an exhaust flow of the facility fluid;
• and
• an air-source heat pump thermally connected to the facility fluid circuit, including:
• an air-source heat pump fluid circuit;
• an air-source heat exchanger positioned on the air-source heat pump fluid circuit and configured to exchange heat with an ambient air;
• the facility heat exchanger positioned on the air-source heat pump fluid circuit;
• and
• an air-source working fluid for circulating through the air-source heat pump fluid circuit to exchange heat with the facility fluid at the facility heat exchanger, and to exchange heat with the ambient air at the air-source heat exchanger.

A thermal unit for connecting to a facility fluid circuit of a facility for providing thermal conditioning to the facility based on exchanging heat with a facility fluid of the facility fluid circuit, the thermal unit comprising:

• an enclosure having a return coupling for receiving a return flow of the facility fluid from the facility and having a supply coupling for providing a supply flow of the facility fluid to the facility;
• a facility heat exchanger positioned within the enclosure for exchanging heat with the facility fluid;
• a ground-source heat pump positioned within the enclosure, including:
• a ground-source heat pump fluid circuit;
• a ground-source heat exchanger positioned on the ground-source heat pump fluid circuit and configured to exchange heat with a downhole fluid of a downhole fluid circuit;
• the facility heat exchanger positioned on the ground-source heat pump fluid circuit;
• a ground-source working fluid for circulating through the ground-source heat pump fluid circuit to exchange heat with the facility fluid at the facility heat exchanger, and to exchange heat with the downhole fluid at the ground-source heat exchanger;
• and
• a supply heat exchanger connected to the downhole fluid circuit and configured, via one or more fluid distribution devices, to exchange heat between the downhole fluid and a supply flow of the facility fluid;
• and
• an air-source heat pump positioned within the enclosure, including:
• an air-source heat pump fluid circuit;
• an air-source heat exchanger positioned on the air-source heat pump fluid circuit and configured to exchange heat with an ambient air;
• the facility heat exchanger positioned on the air-source heat pump fluid circuit;
• and
• an air-source working fluid for circulating through the air-source heat pump fluid circuit to exchange heat with the facility fluid at the facility heat exchanger, and to exchange heat with the ambient air at the air-source heat exchanger;
• wherein the ground-source heat pump and the air-source heat pump are connected to the facility heat exchanger in parallel and the thermal unit is configured to exchange heat between the facility fluid and the ambient air, and between the facility fluid and the downhole fluid.