Dual output heat pumps

A system comprising:

• a closed refrigerant circuit to circulate refrigerant;
• an evaporator disposed on the closed refrigerant circuit to add heat to the refrigerant, wherein the refrigerant transitions from a liquid to a vapor therein;
• a compressor disposed on the closed refrigerant circuit to receive the vapor and to compress the vapor;
• a heat exchange system to receive the vapor, wherein the heat exchange system absorbs heat from the vapor to form a liquid;
• a first heat supply from the heat exchange system to provide low temperature heating;
• and
• a second heat supply from the heat exchange system to provide high temperature heating.

A method comprising:

• receiving a refrigerant as a vapor via a refrigerant inlet;
• receiving air via a fluid inlet;
• removing heat from the vapor to the air to form a liquid-vapor mixture in a hot portion of a heat exchanger;
• removing heat from the liquid-vapor to the air to form a liquid in a warm portion of the heat exchanger;
• passing the air through the warm portion to heat the air to a first temperature;
• supplying a first portion of the air at the first temperature;
• passing a second portion of the air through the hot portion to heat the second portion to a second temperature;
• and
• supplying the second portion of the air at the second temperature.