A heat recovery system including a chamber having a cooling intake, an emissions intake, and a chamber exhaust, a heat recovery exchanger, a fluid circuit in communication with the heat recovery exchanger, a heat extraction exchanger, at least one controller operably linked to at least one operating component of the heat recovery system and at least one sensor configured to collect at least one environmental measurement and system related data from within the habitat. The system further includes a central thermal recovery unit in signal communication with the at least one controller and the at least one sensor. The central thermal recovery unit is configured for determining an operating instruction based on the at least one environmental measurement and system related data received from the at least one sensor and/or a third party database or interface, and transmitting the operating instruction to the at least one controller.

A flameless heater produces hot dry air utilizing hydraulic heat-transfer fluid as a heat transfer medium. The heater is powered preferably by a natural gas engine. The process begins with the natural gas engine producing rotary power which drives a hydraulic pump which directs the heat-transferring fluid through a dynamic heat generator to heat the fluid via an internal friction process. The heated fluid is subsequently circulated through a heat exchanger where a hydraulically-powered fan blows ambient air through to be heated. The heat exchanger also extracts heat from the exhaust and coolant system portions of the engine to further heat the air. The produced dry hot air may be used for general heating. It is envisioned that engines which utilize other fuel sources such as diesel, gasoline, steam, or the like could be utilized with equal effectiveness.

A dual heating process is performed in the absence of an open flame. Heat is created by a rotating prime mover(s) driving a fluid shear heater. Heat is also collected from a cooling system of the prime mover, and from any exhaust heat generated by the prime mover. The heat energy collected from all of these sources is transmitted through heat exchangers to a fluid where heat energy is desired. The fluid being heated may be glycol or air, depending on the type of heat desired.

Disclosed therein are a white smoke reducing system and a method of recovering waste heat and water using the white smoke reducing system. The white smoke reducing system includes a discharge gas inflow pipe, a water recovery part, a sensible heat exchanger, a first latent heat exchanger, a second latent heat exchanger, a steam separator, a discharge part, a circulation duct, and a mixing duct.

A hot water supply apparatus using a heat medium provides a heat medium circulation path that circulates the heat medium, a heat medium pump that pumps the heat medium into the heat medium circulation path, a heat source that generates heat heating the heat medium, a heat medium heat exchanger that exchanges heat generated by the heat source for the heat medium, a hot water supply heat exchanger that exchanges heat of the heat medium circulating in the heat medium circulation path for clean water, and a control unit that sets the heat medium in the heat medium circulation path in a predetermined temperature and controls the rotating speed of the heat medium pump and the combustion amount of the heat source according to a heat requirement.

A heat recovery system for recovering waste heat from exhaust gases that are expelled through a flue that are generated as a byproduct from a heating system, comprises a venting arrangement that connects to the flue from the heating system and a motorized damper to direct the exhaust gases from the flue through the venting arrangement to an intake plenum. The intake plenum directs the exhaust gases to a heat exchanger that comprising a series of serpentine conduits between which the exhaust gases pass through. The heat exchanger is connected to exhaust plenum which is in turn connected to an exhaust fan that draws the exhaust gasses through the heat recovery system. The heat exchanger further comprises a series of inlet ports and outlet ports that add and remove coolant to the serpentine conduits at selected temperatures.

A storage type gas water heater has two or more tanks/areas providing a primary heated water storage area from which hot water is drawn, and one or more supplementary water storage areas utilizing hot combustion gas from the primary heated water storage area generating and supplying temperate water to previous supplementary water storage areas and/or the primary water storage area. An energy recovery chamber is situated between the primary heated water storage water area and the supplementary water storage area(s), with combustion gas vented therein. A hollow diffuser, defining a diffuser cavity, or one of various heat exchangers, is provided in the energy recovery chamber over the vented combustion gas. The diffuser cavity or heat exchanger receives temperate water from the supplemental water storage area and further heated by the vented combustion gas impinging the hollow diffuser or heat exchanger before being provided to the primary water storage area.